DTE ENERGY CO, 10-K filed on 2/8/2024
Annual Report
v3.24.0.1
Document and Entity Information - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2023
Jan. 31, 2024
Jun. 30, 2023
Entity Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2023    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 1-11607    
Entity Registrant Name DTE Energy Co    
Entity Incorporation, State or Country Code MI    
Entity Tax Identification Number 38-3217752    
Entity Address, Address Line One One Energy Plaza    
Entity Address, City or Town Detroit    
Entity Address, State or Province MI    
Entity Address, Postal Zip Code 48226-1279    
City Area Code 313    
Local Phone Number 235-4000    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 22.6
Entity Common Stock, Shares Outstanding   206,452,985  
Documents Incorporated by Reference
Certain information in DTE Energy's definitive Proxy Statement for its 2024 Annual Meeting of Common Shareholders to be held May 2, 2024, which will be filed with the Securities and Exchange Commission pursuant to Regulation 14A, not later than 120 days after the end of the Registrants' fiscal year covered by this report on Form 10-K, is incorporated herein by reference to Part III (Items 10, 11, 12, 13, and 14) of this Form 10-K.
This combined Form 10-K is filed separately by two registrants: DTE Energy and DTE Electric. Information contained herein relating to any individual registrant is filed by such registrant solely on its own behalf. DTE Electric makes no representation as to information relating exclusively to DTE Energy.
DTE Electric, an indirect wholly-owned subsidiary of DTE Energy, meets the conditions set forth in General Instructions I(1)(a) and (b) of Form 10-K and is therefore filing this form with the reduced disclosure format specified in General Instruction I(2) of Form 10-K.
    
Entity Central Index Key 0000936340    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Amendment Flag false    
Common stock, without par value      
Entity Information [Line Items]      
Title of 12(b) Security Common stock, without par value    
Trading Symbol DTE    
Security Exchange Name NYSE    
2017 Series E 5.25% Junior Subordinated Debentures due 2077      
Entity Information [Line Items]      
Title of 12(b) Security 2017 Series E 5.25% Junior Subordinated Debentures due 2077    
Trading Symbol DTW    
Security Exchange Name NYSE    
2021 Series E 4.375% Junior Subordinated Debentures due 2081      
Entity Information [Line Items]      
Title of 12(b) Security 2020 Series G 4.375% Junior Subordinated Debentures due 2080    
Trading Symbol DTB    
Security Exchange Name NYSE    
2021 Series E 4.375% Junior Subordinated Debentures due 2081      
Entity Information [Line Items]      
Title of 12(b) Security 2021 Series E 4.375% Junior Subordinated Debentures due 2081    
Trading Symbol DTG    
Security Exchange Name NYSE    
DTE Electric      
Entity Information [Line Items]      
Entity File Number 1-2198    
Entity Registrant Name DTE Electric Co    
Entity Incorporation, State or Country Code MI    
Entity Tax Identification Number 38-0478650    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   138,632,324  
Entity Central Index Key 0000028385    
v3.24.0.1
Audit Information
 12 Months Ended
Dec. 31, 2023
Auditor [Line Items]  
Auditor Firm ID 238
Auditor Name PricewaterhouseCoopers LLP
Auditor Location Detroit, Michigan
DTE Electric  
Auditor [Line Items]  
Auditor Firm ID 238
Auditor Name PricewaterhouseCoopers LLP
Auditor Location Detroit, Michigan
v3.24.0.1
Consolidated Statements of Operations - USD ($)
shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Operating Revenues      
Utility operations $ 7,466 $ 8,243 $ 7,288
Non-utility operations 5,279 10,985 7,676
Operating Revenues 12,745 19,228 14,964
Operating Expenses      
Fuel, purchased power, and gas — utility 1,845 2,505 1,904
Fuel, purchased power, gas, and other — non-utility 4,413 10,655 7,304
Operation and maintenance 2,160 2,400 2,420
Depreciation and amortization 1,606 1,468 1,377
Taxes other than income 462 457 431
Asset (gains) losses and impairments, net 16 (5) 33
Operating Expenses 10,502 17,480 13,469
Operating Income 2,243 1,748 1,495
Other (Income) and Deductions      
Interest expense 791 675 630
Interest income (57) (46) (22)
Non-operating retirement benefits, net 9 (1) 17
Loss on extinguishment of debt 0 0 393
Other income (102) (58) (254)
Other expenses 36 66 75
Other (Income) and Deductions 677 636 839
Income Before Income Taxes 1,566 1,112 656
Income Tax Expense (Benefit) 169 29 (130)
Net Income from Continuing Operations 1,397 1,083 786
Net Income from Discontinued Operations, Net of Taxes (Note 4) 0 0 117
Net Income 1,397 1,083 903
Less: Net Income (Loss) Attributable to Noncontrolling Interests      
Continuing operations 0 0 (10)
Discontinued operations 0 0 6
Net Income Attributable to DTE Energy Company/DTE Electric Company $ 1,397 $ 1,083 $ 907
Basic Earnings per Common Share      
Continuing operations (in dollars per share) $ 6.77 $ 5.53 $ 4.11
Discontinued operations (in dollars per share) 0 0 0.57
Basic Earnings per Common Share (in dollars per share) 6.77 5.53 4.68
Diluted Earnings per Common Share      
Continuing operations (in dollars per share) 6.76 5.52 4.10
Discontinued operations (in dollars per share) 0 0 0.57
Diluted Earnings per Common Share (in dollars per share) $ 6.76 $ 5.52 $ 4.67
Weighted Average Common Shares Outstanding      
Basic (in shares) 206 195 193
Diluted (in shares) 206 196 194
v3.24.0.1
Consolidated Statements of Comprehensive Income - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Statement of Comprehensive Income [Abstract]      
Net Income $ 1,397 $ 1,083 $ 903
Other comprehensive income (loss), net of tax:      
Benefit obligations, net of taxes of $2, $12, and $4, respectively 6 43 8
Net unrealized gains (losses) on derivatives, net of taxes of $(4), $3, and $2, respectively (13) 7 7
Foreign currency translation 2 0 0
Other comprehensive income (loss) (5) 50 15
Comprehensive income 1,392 1,133 918
Less: Comprehensive loss attributable to noncontrolling interests 0 0 (4)
Comprehensive Income Attributable to DTE Energy Company/DTE Electric Company $ 1,392 $ 1,133 $ 922
v3.24.0.1
Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Statement of Comprehensive Income [Abstract]      
Tax effect on benefit obligation $ 2 $ 12 $ 4
Tax effect on net unrealized gains (losses) on derivatives $ (4) $ 3 $ 2
v3.24.0.1
Consolidated Statements of Financial Position - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Current Assets    
Cash and cash equivalents $ 26 $ 33
Restricted cash 25 10
Accounts receivable (less allowance for doubtful accounts)    
Customer 1,632 2,038
Other 155 144
Inventories    
Fuel and gas 421 433
Materials, supplies, and other 633 509
Derivative assets 297 328
Regulatory assets 108 450
Other 242 235
Total Current Assets 3,539 4,180
Investments    
Nuclear decommissioning trust funds 2,041 1,825
Investments in equity method investees 166 165
Other 168 165
Total Investments 2,375 2,155
Property    
Property, plant, and equipment 37,274 39,346
Accumulated depreciation and amortization (9,105) (10,579)
Property, plant and equipment, net 28,169 28,767
Other Assets    
Goodwill 1,993 1,993
Regulatory assets 6,209 3,886
Securitized regulatory assets 758 206
Intangible assets 156 166
Notes receivable 420 331
Derivative assets 109 105
Prepaid postretirement costs 633 571
Operating lease right-of-use assets 132 89
Other 262 234
Total Other Assets 10,672 7,581
Total Assets 44,755 42,683
Current Liabilities    
Accounts payable 1,361 1,604
Accrued interest 170 154
Dividends payable 210 196
Short-term borrowings 1,283 1,162
Current portion long-term debt, including securitization bonds and finance leases 2,142 1,124
Derivative liabilities 177 342
Regulatory liabilities 71 34
Operating lease liabilities 17 13
Other 452 544
Total Current Liabilities 5,883 5,173
Long-Term Debt (net of current portion)    
Mortgage bonds, notes, and other 15,819 15,807
Securitization bonds 705 172
Junior subordinated debentures 883 883
Finance lease obligations 13 11
Total Long-Term Debt (net of current portion) 17,420 16,873
Other Liabilities    
Deferred income taxes 2,649 2,394
Regulatory liabilities 2,603 2,673
Asset retirement obligations 3,556 3,460
Unamortized investment tax credit 181 182
Derivative liabilities 132 315
Accrued pension liability 350 378
Accrued postretirement liability 301 287
Nuclear decommissioning 320 282
Operating lease liabilities 108 68
Other 197 197
Total Other Liabilities 10,397 10,236
Commitments and Contingencies (Notes 9 and 18)
Equity    
Common stock 6,713 6,651
Retained earnings 4,404 3,808
Accumulated other comprehensive loss (67) (62)
Total DTE Energy Company/DTE Electric Company Equity 11,050 10,397
Noncontrolling interests 5 4
Total Equity 11,055 10,401
Total Liabilities and Equity $ 44,755 $ 42,683
v3.24.0.1
Consolidated Statements of Financial Position (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Current Assets:    
Allowance for doubtful accounts $ 63 $ 79
Stockholders' Equity:    
Common stock, shares authorized (in shares) 400,000,000 400,000,000
Common stock, shares issued (in shares) 206,357,070 205,632,393
Common stock, shares outstanding (in shares) 206,357,070 205,632,393
v3.24.0.1
Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Operating Activities      
Net Income $ 1,397 $ 1,083 $ 903
Adjustments to reconcile Net Income to Net cash from operating activities:      
Depreciation and amortization 1,606 1,468 1,459
Nuclear fuel amortization 59 42 58
Allowance for equity funds used during construction (42) (29) (27)
Deferred income taxes 181 44 (32)
Equity (earnings) losses of equity method investees (3) 14 (97)
Dividends from equity method investees 3 4 79
Loss on extinguishment of debt 0 0 393
Asset (gains) losses and impairments, net 16 (5) 50
Changes in assets and liabilities:      
Accounts receivable, net 398 (352) (146)
Inventories (110) (98) (153)
Prepaid postretirement benefit costs (62) 107 (117)
Accounts payable (306) 109 308
Accrued pension liability (28) 39 (458)
Accrued postretirement liability 14 (71) (49)
Derivative assets and liabilities (321) 65 187
Regulatory assets and liabilities 594 (766) 862
Other current and noncurrent assets and liabilities (176) 323 (153)
Net cash from operating activities 3,220 1,977 3,067
Investing Activities      
Plant and equipment expenditures — utility (3,872) (3,311) (3,633)
Plant and equipment expenditures — non-utility (62) (67) (139)
Proceeds from sale of assets 3 24 3
Proceeds from sale of nuclear decommissioning trust fund assets 681 879 1,047
Investment in nuclear decommissioning trust funds (678) (878) (1,046)
Distributions from equity method investees 25 16 18
Contributions to equity method investees (27) (13) (8)
Notes receivable (86) (30) (74)
Other (79) (51) (31)
Net cash used for investing activities (4,095) (3,431) (3,863)
Financing Activities      
Issuance of long-term debt, net of discount and issuance costs 3,167 2,171 4,457
Redemption of long-term debt (1,616) (1,587) (3,522)
Short-term borrowings, net 121 404 720
Issuance of common stock 0 1,300 0
Repurchase of common stock 0 (55) (66)
Dividends paid on common stock (752) (685) (791)
Contributions from noncontrolling interests 2 3 44
Distributions to noncontrolling interests (1) (7) (45)
Prepayment costs for extinguishment of long-term debt 0 0 (361)
Transfer of cash to DT Midstream at separation 0 0 (37)
Other (38) (82) (84)
Net cash from financing activities 883 1,462 315
Net Increase (Decrease) in Cash, Cash Equivalents, and Restricted Cash 8 8 (481)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period 43 35 516
Cash, Cash Equivalents, and Restricted Cash at End of Period 51 43 35
Supplemental disclosure of cash information      
Cash paid (received) for: Interest, net of interest capitalized 751 638 671
Cash paid (received) for: Income taxes (5) (3) (3)
Supplemental disclosure of non-cash investing and financing activities      
Plant and equipment expenditures in accounts payable 490 435 353
Separation of DT Midstream net assets, excluding cash transferred $ 0 $ 0 $ 3,973
v3.24.0.1
Consolidated Statements of Changes in Equity - USD ($)
$ in Millions
Total
Common Stock
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
Noncontrolling Interests
Beginning balance (in shares) at Dec. 31, 2020   193,771,000      
Beginning balance at Dec. 31, 2020 $ 12,589 $ 5,406 $ 7,156 $ (137) $ 164
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net Income 903   907   (4)
Dividends declared on common stock (752)   (752)    
Repurchase of common stock (in shares)   (529,000)      
Repurchase of common stock (66) $ (66)      
Other comprehensive income (loss), net of tax 15     15  
Stock-based compensation, net distributions to/ contributions from noncontrolling interests, and other (in shares)   506,000      
Stock-based compensation, net distributions to noncontrolling interests, and other 34 $ 39 (4)   (1)
Separation of DT Midstream (4,010)   (3,869) 10 (151)
Ending balance (in shares) at Dec. 31, 2021   193,748,000      
Ending balance at Dec. 31, 2021 8,713 $ 5,379 3,438 (112) 8
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net Income 1,083   1,083    
Dividends declared on common stock (710)   (710)    
Issuance of common stock (in shares)   11,887,000      
Issuance of common stock   $ 1,300      
Repurchase of common stock (in shares)   (465,000)      
Repurchase of common stock (55) $ (55)      
Other comprehensive income (loss), net of tax 50     50  
Stock-based compensation, net distributions to/ contributions from noncontrolling interests, and other (in shares)   462,000      
Stock-based compensation, net distributions to noncontrolling interests, and other $ 20 $ 27 (3)   (4)
Ending balance (in shares) at Dec. 31, 2022 205,632,393 205,632,000      
Ending balance at Dec. 31, 2022 $ 10,401 $ 6,651 3,808 (62) 4
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net Income 1,397   1,397    
Dividends declared on common stock (800)   (800)    
Issuance of common stock (in shares)   318,000      
Issuance of common stock 35 $ 35      
Other comprehensive income (loss), net of tax (5)     (5)  
Stock-based compensation, net distributions to/ contributions from noncontrolling interests, and other (in shares)   407,000      
Stock-based compensation, net distributions to noncontrolling interests, and other $ 27 $ 27 (1)   1
Ending balance (in shares) at Dec. 31, 2023 206,357,070 206,357,000      
Ending balance at Dec. 31, 2023 $ 11,055 $ 6,713 $ 4,404 $ (67) $ 5
v3.24.0.1
Consolidated Statements of Changes in Equity (Parenthetical) - $ / shares
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Statement of Stockholders' Equity [Abstract]      
Dividends declared on common stock (in dollars per share) $ 3.88 $ 3.61 $ 3.88
v3.24.0.1
Consolidated Statements of Operations - DTE Electric Company - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Operating Revenues — Utility operations $ 7,466 $ 8,243 $ 7,288
Operating Expenses      
Fuel, purchased power, and gas — utility 1,845 2,505 1,904
Taxes other than income 462 457 431
Asset (gains) losses and impairments, net 16 (5) 33
Operating Expenses 10,502 17,480 13,469
Operating Income 2,243 1,748 1,495
Other (Income) and Deductions      
Interest expense 791 675 630
Interest income (57) (46) (22)
Non-operating retirement benefits, net 9 (1) 17
Other income (102) (58) (254)
Other expenses 36 66 75
Other (Income) and Deductions 677 636 839
Income Before Income Taxes 1,566 1,112 656
Income Tax Expense 169 29 (130)
Net Income Attributable to DTE Energy Company/DTE Electric Company 1,397 1,083 907
DTE Electric      
Operating Revenues — Utility operations 5,804 6,397 5,809
Operating Expenses      
Fuel, purchased power, and gas — utility 1,492 1,990 1,541
Operation and maintenance 1,421 1,538 1,569
Depreciation and amortization 1,326 1,204 1,109
Taxes other than income 338 338 320
Asset (gains) losses and impairments, net 26 8 1
Operating Expenses 4,603 5,078 4,540
Operating Income 1,201 1,319 1,269
Other (Income) and Deductions      
Interest expense 429 370 335
Interest income (20) (8) 0
Non-operating retirement benefits, net (4) (3) (2)
Other income (87) (65) (71)
Other expenses 33 44 37
Other (Income) and Deductions 351 338 299
Income Before Income Taxes 850 981 970
Income Tax Expense 78 26 104
Net Income Attributable to DTE Energy Company/DTE Electric Company $ 772 $ 955 $ 866
v3.24.0.1
Consolidated Statements of Comprehensive Income - DTE Electric Company - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Net Income $ 1,397 $ 1,083 $ 907
Other comprehensive income (loss), net of tax (5) 50 15
Comprehensive Income Attributable to DTE Energy Company/DTE Electric Company 1,392 1,133 922
DTE Electric      
Net Income 772 955 866
Other comprehensive income (loss), net of tax 0 0 0
Comprehensive Income Attributable to DTE Energy Company/DTE Electric Company $ 772 $ 955 $ 866
v3.24.0.1
Consolidated Statements of Financial Position - DTE Electric Company - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Current Assets    
Cash and cash equivalents $ 26 $ 33
Restricted cash 25 10
Accounts receivable (less allowance for doubtful accounts)    
Customer 1,632 2,038
Other 155 144
Inventories    
Fuel and gas 421 433
Materials, supplies, and other 633 509
Regulatory assets 108 450
Other 242 235
Total Current Assets 3,539 4,180
Investments    
Nuclear decommissioning trust funds 2,041 1,825
Other 168 165
Total Investments 2,375 2,155
Property    
Property, plant, and equipment 37,274 39,346
Accumulated depreciation and amortization (9,105) (10,579)
Property, plant and equipment, net 28,169 28,767
Other Assets    
Regulatory assets 6,209 3,886
Securitized regulatory assets 758 206
Operating lease right-of-use assets 132 89
Other 262 234
Total Other Assets 10,672 7,581
Total Assets 44,755 42,683
Accounts payable    
Accounts payable 1,361 1,604
Accrued interest 170 154
Current portion long-term debt, including securitization bonds and finance leases 2,142 1,124
Regulatory liabilities 71 34
Short-term borrowings    
Short-term borrowings 1,283 1,162
Operating lease liabilities 17 13
Other 452 544
Total Current Liabilities 5,883 5,173
Long-Term Debt (net of current portion)    
Mortgage bonds, notes, and other 15,819 15,807
Securitization bonds 705 172
Finance lease obligations 13 11
Total Long-Term Debt (net of current portion) 17,420 16,873
Other Liabilities    
Deferred income taxes 2,649 2,394
Regulatory liabilities 2,603 2,673
Asset retirement obligations 3,556 3,460
Unamortized investment tax credit 181 182
Nuclear decommissioning 320 282
Operating lease liabilities 108 68
Other 197 197
Total Other Liabilities 10,397 10,236
Commitments and Contingencies (Notes 9 and 18)
Shareholder's Equity    
Common stock 6,713 6,651
Retained earnings 4,404 3,808
Total DTE Energy Company/DTE Electric Company Equity 11,050 10,397
Total Liabilities and Equity 44,755 42,683
DTE Electric    
Current Assets    
Cash and cash equivalents 15 15
Restricted cash 17 9
Accounts receivable (less allowance for doubtful accounts)    
Other 55 75
Inventories    
Fuel and gas 191 167
Materials, supplies, and other 409 331
Regulatory assets 99 421
Other 114 98
Total Current Assets 1,676 1,851
Investments    
Nuclear decommissioning trust funds 2,041 1,825
Other 53 44
Total Investments 2,094 1,869
Property    
Property, plant, and equipment 27,936 30,591
Accumulated depreciation and amortization (6,570) (8,095)
Property, plant and equipment, net 21,366 22,496
Other Assets    
Regulatory assets 5,596 3,219
Securitized regulatory assets 758 206
Prepaid postretirement costs — affiliates 378 345
Operating lease right-of-use assets 101 56
Other 216 194
Total Other Assets 7,049 4,020
Total Assets 32,185 30,236
Accounts payable    
Accrued interest 113 105
Current portion long-term debt, including securitization bonds and finance leases 166 248
Regulatory liabilities 49 33
Short-term borrowings    
Operating lease liabilities 15 9
Other 169 204
Total Current Liabilities 1,651 1,902
Long-Term Debt (net of current portion)    
Mortgage bonds, notes, and other 10,174 9,282
Securitization bonds 705 172
Finance lease obligations 4 1
Total Long-Term Debt (net of current portion) 10,883 9,455
Other Liabilities    
Deferred income taxes 3,109 2,946
Regulatory liabilities 1,710 1,778
Asset retirement obligations 3,326 3,221
Unamortized investment tax credit 181 182
Nuclear decommissioning 320 282
Accrued pension liability — affiliates 334 387
Accrued postretirement liability — affiliates 290 275
Operating lease liabilities 81 39
Other 76 74
Total Other Liabilities 9,427 9,184
Commitments and Contingencies (Notes 9 and 18)
Shareholder's Equity    
Common stock 7,361 6,602
Retained earnings 2,863 3,093
Total DTE Energy Company/DTE Electric Company Equity 10,224 9,695
Total Liabilities and Equity 32,185 30,236
DTE Electric | Affiliates    
Accounts receivable (less allowance for doubtful accounts)    
Customer 12 8
Accounts payable    
Accounts payable 58 71
Short-term borrowings    
Short-term borrowings 0 27
DTE Electric | Customer/ Other    
Accounts receivable (less allowance for doubtful accounts)    
Customer 764 727
Accounts payable    
Accounts payable 696 637
Short-term borrowings    
Short-term borrowings $ 385 $ 568
v3.24.0.1
Consolidated Statements of Financial Position - DTE Electric Company (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Current Assets:    
Allowance for doubtful accounts $ 63 $ 79
Stockholders' Equity:    
Common stock, shares authorized (in shares) 400,000,000 400,000,000
Common stock, shares issued (in shares) 206,357,070 205,632,393
Common stock, shares outstanding (in shares) 206,357,070 205,632,393
DTE Electric    
Current Assets:    
Allowance for doubtful accounts $ 41 $ 49
Stockholders' Equity:    
Common stock, par value (in dollars per share) $ 10 $ 10
Common stock, shares authorized (in shares) 400,000,000 400,000,000
Common stock, shares issued (in shares) 138,632,324 138,632,324
Common stock, shares outstanding (in shares) 138,632,324 138,632,324
v3.24.0.1
Consolidated Statements of Cash Flows - DTE Electric Company - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Operating Activities      
Net Income $ 1,397 $ 1,083 $ 907
Adjustments to reconcile Net Income to Net cash from operating activities:      
Depreciation and amortization 1,606 1,468 1,377
Nuclear fuel amortization 59 42 58
Allowance for equity funds used during construction (42) (29) (27)
Deferred income taxes 181 44 (32)
Asset (gains) losses and impairments, net 16 (5) 50
Changes in assets and liabilities:      
Accounts receivable, net 398 (352) (146)
Inventories (110) (98) (153)
Accounts payable (306) 109 308
Regulatory assets and liabilities 594 (766) 862
Other current and noncurrent assets and liabilities (176) 323 (153)
Net cash from operating activities 3,220 1,977 3,067
Investing Activities      
Proceeds from Sale and Maturity of Other Investments 681 879 1,047
Investment in nuclear decommissioning trust funds (678) (878) (1,046)
Net cash used for investing activities (4,095) (3,431) (3,863)
Financing Activities      
Issuance of long-term debt, net of discount and issuance costs 3,167 2,171 4,457
Redemption of long-term debt (1,616) (1,587) (3,522)
Short-term borrowings, net — affiliates 121 404 720
Dividends paid on common stock (752) (685) (791)
Other (38) (82) (84)
Net cash from financing activities 883 1,462 315
Net Increase (Decrease) in Cash, Cash Equivalents, and Restricted Cash 8 8 (481)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period 43 35 516
Cash, Cash Equivalents, and Restricted Cash at End of Period 51 43 35
Supplemental disclosure of cash information      
Cash paid (received) for: Interest, net of interest capitalized 751 638 671
Cash paid (received) for: Income taxes (5) (3) (3)
Supplemental disclosure of non-cash investing and financing activities      
Plant and equipment expenditures in accounts payable 490 435 353
DTE Electric      
Operating Activities      
Net Income 772 955 866
Adjustments to reconcile Net Income to Net cash from operating activities:      
Depreciation and amortization 1,326 1,204 1,109
Nuclear fuel amortization 59 42 58
Allowance for equity funds used during construction (40) (26) (25)
Deferred income taxes 82 25 122
Asset (gains) losses and impairments, net 26 8 1
Changes in assets and liabilities:      
Accounts receivable, net (14) (40) 68
Inventories (99) (26) (11)
Prepaid postretirement benefit costs — affiliates (33) 57 (67)
Accounts payable (9) 23 65
Accrued pension liability — affiliates (53) (18) (326)
Accrued postretirement liability — affiliates 15 (65) (44)
Regulatory assets and liabilities 461 (653) 716
Other current and noncurrent assets and liabilities (218) 204 (216)
Net cash from operating activities 2,275 1,690 2,316
Investing Activities      
Plant and equipment expenditures (3,089) (2,626) (3,017)
Proceeds from Sale and Maturity of Other Investments 681 879 1,047
Investment in nuclear decommissioning trust funds (678) (878) (1,046)
Notes receivable and other (47) (40) (31)
Net cash used for investing activities (3,133) (2,665) (3,047)
Financing Activities      
Issuance of long-term debt, net of discount and issuance costs 1,881 1,118 985
Redemption of long-term debt (541) (337) (321)
Capital contribution by parent company 759 600 555
Dividends paid on common stock (1,002) (763) (588)
Other (21) (17) (12)
Net cash from financing activities 866 990 724
Net Increase (Decrease) in Cash, Cash Equivalents, and Restricted Cash 8 15 (7)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period 24 9 16
Cash, Cash Equivalents, and Restricted Cash at End of Period 32 24 9
Supplemental disclosure of cash information      
Cash paid (received) for: Interest, net of interest capitalized 409 350 321
Cash paid (received) for: Income taxes 15 (33) 5
Supplemental disclosure of non-cash investing and financing activities      
Plant and equipment expenditures in accounts payable 403 335 286
DTE Electric | Affiliates      
Financing Activities      
Short-term borrowings, net — affiliates (27) (26) (48)
DTE Electric | Customer/ Other      
Financing Activities      
Short-term borrowings, net — affiliates $ (183) $ 415 $ 153
v3.24.0.1
Consolidated Statements of Changes in Equity - DTE Electric Company - USD ($)
$ in Millions
Total
Common Stock
Retained Earnings
DTE Electric
DTE Electric
Common Stock
DTE Electric
Additional Paid-in Capital
DTE Electric
Retained Earnings
Beginning balance (in shares) at Dec. 31, 2020   193,771,000     138,632,000    
Beginning balance at Dec. 31, 2020       $ 8,070 $ 1,386 $ 4,061 $ 2,623
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income $ 907     866     866
Dividends declared on common stock (752)   $ (752) (588)     (588)
Capital contribution by parent company       555   555  
Ending balance (in shares) at Dec. 31, 2021   193,748,000     138,632,000    
Ending balance at Dec. 31, 2021       8,903 $ 1,386 4,616 2,901
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income 1,083     955     955
Dividends declared on common stock $ (710)   (710) (763)     (763)
Capital contribution by parent company       $ 600   600  
Ending balance (in shares) at Dec. 31, 2022 205,632,393 205,632,000   138,632,324 138,632,000    
Ending balance at Dec. 31, 2022 $ 10,397     $ 9,695 $ 1,386 5,216 3,093
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income 1,397     772     772
Dividends declared on common stock $ (800)   $ (800) (1,002)     (1,002)
Capital contribution by parent company       $ 759   759  
Ending balance (in shares) at Dec. 31, 2023 206,357,070 206,357,000   138,632,324 138,632,000    
Ending balance at Dec. 31, 2023 $ 11,050     $ 10,224 $ 1,386 $ 5,975 $ 2,863
v3.24.0.1
Organization and Basis of Presentation
 12 Months Ended
Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Organization and Basis of Presentation ORGANIZATION AND BASIS OF PRESENTATION
Corporate Structure
DTE Energy owns the following businesses:
•DTE Electric is a public utility engaged in the generation, purchase, distribution, and sale of electricity to approximately 2.3 million customers in southeastern Michigan;
•DTE Gas is a public utility engaged in the purchase, storage, transportation, distribution, and sale of natural gas to approximately 1.3 million customers throughout Michigan and the sale of storage and transportation capacity; and
•Other businesses include 1) DTE Vantage, which is primarily involved in renewable natural gas projects and providing custom energy solutions to industrial, commercial, and institutional customers, and 2) energy marketing and trading operations.
DTE Electric and DTE Gas are regulated by the MPSC. Certain activities of DTE Electric and DTE Gas, as well as various other aspects of businesses under DTE Energy, are regulated by the FERC. In addition, the Registrants are regulated by other federal and state regulatory agencies including the NRC, the EPA, EGLE, and for DTE Energy, the CFTC and CARB.
Basis of Presentation
The accompanying Consolidated Financial Statements of the Registrants are prepared using accounting principles generally accepted in the United States of America. These accounting principles require management to use estimates and assumptions that impact reported amounts of assets, liabilities, revenues and expenses, and the disclosure of contingent assets and liabilities. Actual results may differ from the Registrants' estimates.
The information in these combined notes relates to each of the Registrants as noted in the Index of Combined Notes to Consolidated Financial Statements. However, DTE Electric does not make any representation as to information related solely to DTE Energy or the subsidiaries of DTE Energy other than itself.
Certain prior year balances for the Registrants were reclassified to match the current year's Consolidated Financial Statements presentation.
Separation of DT Midstream
On July 1, 2021, DTE Energy completed the separation of DT Midstream, its former natural gas pipeline, storage and gathering non-utility business. Financial results of DT Midstream are presented as Income from discontinued operations, net of taxes on DTE Energy's Consolidated Statements of Operations.
No adjustments were made to the historical activity within the Consolidated Statements of Comprehensive Income, Consolidated Statements of Cash Flows, or the Consolidated Statements of Changes in Equity. Unless noted otherwise, discussion in the Notes to the Consolidated Financial Statements relate to continuing operations. Refer to Note 4 to the Consolidated Financial Statements, “Discontinued Operations,” for additional information.
Principles of Consolidation
The Registrants consolidate all majority-owned subsidiaries and investments in entities in which they have controlling influence. Non-majority owned investments are accounted for using the equity method when the Registrants are able to significantly influence the operating policies of the investee. When the Registrants do not influence the operating policies of an investee, the equity investment is valued at cost minus any impairments, if applicable. These Consolidated Financial Statements also reflect the Registrants' proportionate interests in certain jointly-owned utility plants. The Registrants eliminate all intercompany balances and transactions.
The Registrants evaluate whether an entity is a VIE whenever reconsideration events occur. The Registrants consolidate VIEs for which they are the primary beneficiary. If a Registrant is not the primary beneficiary and an ownership interest is held, the VIE is accounted for under the equity method of accounting. When assessing the determination of the primary beneficiary, a Registrant considers all relevant facts and circumstances, including: the power, through voting or similar rights, to direct the activities of the VIE that most significantly impact the VIE's economic performance and the obligation to absorb the expected losses and/or the right to receive the expected returns of the VIE. The Registrants perform ongoing reassessments of all VIEs to determine if the primary beneficiary status has changed.
Legal entities within the DTE Vantage segment enter into long-term contractual arrangements with customers to supply energy-related products or services. The entities are generally designed to pass-through the commodity risk associated with these contracts to the customers, with DTE Energy retaining operational and customer default risk. These entities generally are VIEs and consolidated when DTE Energy is the primary beneficiary. In addition, DTE Energy has interests in certain VIEs through which control of all significant activities is shared with partners, and therefore are generally accounted for under the equity method.
The Registrants hold ownership interests in certain limited partnerships. The limited partnerships include investment funds which support regional development and economic growth, and an operational business providing energy-related products. These entities are generally VIEs as a result of certain characteristics of the limited partnership voting rights. The ownership interests are accounted for under the equity method as the Registrants are not the primary beneficiaries.
DTE Energy has variable interests in VIEs through certain of its long-term purchase and sale contracts. DTE Electric has variable interests in VIEs through certain of its long-term purchase contracts. As of December 31, 2023, the carrying amount of assets and liabilities in DTE Energy's Consolidated Statements of Financial Position that relate to its variable interests under long-term purchase and sale contracts are predominantly related to working capital accounts and generally represent the amounts owed by or to DTE Energy for the deliveries associated with the current billing cycle under the contracts. As of December 31, 2023, the carrying amount of assets and liabilities in DTE Electric's Consolidated Statements of Financial Position that relate to its variable interests under long-term purchase contracts are predominantly related to working capital accounts and generally represent the amounts owed by DTE Electric for the deliveries associated with the current billing cycle under the contracts. The Registrants have not provided any significant form of financial support associated with these long-term contracts. There is no material potential exposure to loss as a result of DTE Energy's variable interests through these long-term purchase and sale contracts. In addition, there is no material potential exposure to loss as a result of DTE Electric's variable interests through these long-term purchase contracts.
During 2022, DTE Electric financed regulatory assets for previously deferred costs related to the River Rouge generation plant and tree trimming surge program through the sale of bonds by a wholly-owned special purpose entity, DTE Securitization I. During 2023, DTE Electric similarly financed regulatory assets for previously deferred costs related to the Trenton Channel and St. Clair generation plants through the sale of bonds by a wholly-owned special purpose entity, DTE Securitization II. DTE Securitization I and DTE Securitization II (collectively "the DTE Securitization entities") are VIEs. DTE Electric has the power to direct the most significant activities of the DTE Securitization entities, including performing servicing activities such as billing and collecting surcharge revenue. Accordingly, DTE Electric is the primary beneficiary and the DTE Securitization entities are consolidated by the Registrants. Securitization bond holders have no recourse to the Registrants' assets, except for those held by the DTE Securitization entities. Surcharges collected by DTE Electric to pay for bond servicing and other qualified costs reflect securitization property solely owned by the DTE Securitization entities. These surcharges are remitted to a trustee and are not available to other creditors of the Registrants.
The maximum risk exposure for consolidated VIEs is reflected on the Registrants' Consolidated Statements of Financial Position. For non-consolidated VIEs, the maximum risk exposure of the Registrants is generally limited to their investment, notes receivable, and future funding commitments.
The table below summarizes the major Consolidated Statements of Financial Position items for consolidated VIEs as of December 31, 2023 and 2022. All assets and liabilities of a consolidated VIE are presented where it has been determined that a consolidated VIE has either (1) assets that can be used only to settle obligations of the VIE or (2) liabilities for which creditors do not have recourse to the general credit of the primary beneficiary. Assets and liabilities of the DTE Securitization entities have been aggregated due to their similar nature and are separately stated in the table below, comprising the entirety of the DTE Electric amounts. For all other VIEs, assets and liabilities are also aggregated due to their similar nature and presented together with the DTE Securitization entities in the DTE Energy amounts below. VIEs, in which DTE Energy holds a majority voting interest and is the primary beneficiary, that meet the definition of a business and whose assets can be used for purposes other than the settlement of the VIE's obligations have been excluded from the table.
During 2023, a consolidated VIE of DTE Vantage entered into a contract that restricts certain assets of the VIE to be used only to settle the VIE's obligations. As a result, the assets and liabilities of the VIE, which primarily include receivables and payables recognized in 2023, no longer meet the exclusion criteria above. Accordingly, these assets and liabilities have been added to the DTE Energy amounts in the table below.
Amounts for the Registrants' consolidated VIEs are as follows:
December 31,
20232022
DTE EnergyDTE ElectricDTE EnergyDTE Electric
(In millions)
ASSETS
Cash and cash equivalents$7 $— $14 $— 
Restricted cash25 17 9 9 
Accounts receivable85 6 6 3 
Securitized regulatory assets758 758 206 206 
Notes receivable183 — 81 — 
Other current and long-term assets4 1 8 — 
$1,062 $782 $324 $218 
LIABILITIES
Accounts payable$59 $— $3 $— 
Short-term borrowings— — 81 — 
Securitization bonds(a)
769 769 211 211 
Other current and long-term liabilities26 14 11 9 
$854 $783 $306 $220 
_______________________________________
(a)Includes $64 million and $39 million reported in Current portion of long-term debt on the Registrants' Consolidated Statements of Financial Position for the periods ended December 31, 2023 and December 31, 2022, respectively.
Amounts for DTE Energy's non-consolidated VIEs are as follows:
December 31,
20232022
(In millions)
Investments in equity method investees$112 $137 
Notes receivable$15 $15 
Future funding commitments$1 $2 
Equity Method Investments
Investments in non-consolidated affiliates that are not controlled by the Registrants, but over which they have significant influence, are accounted for using the equity method. Certain of the equity method investees are also considered VIEs and disclosed in the non-consolidated VIEs table above.
At December 31, 2023 and 2022, DTE Energy's Investments in equity method investees were $166 million and $165 million, respectively. The balances are primarily comprised of investments in the DTE Vantage and Corporate and Other segments, of which no investment is individually significant. DTE Vantage investments include projects that deliver energy and utility-type products and services to industrial customers, sell electricity and gas from renewable energy projects, and produce and sell metallurgical coke. Corporate and Other holds various ownership interests in limited partnerships that include investment funds supporting regional development and economic growth. For further information by segment, see Note 22 to the Consolidated Financial Statements, "Segment and Related Information."
At December 31, 2023 and 2022, DTE Energy's share of the underlying equity in the net assets of the investees exceeded the carrying amounts of Investments in equity method investees by $101 million and $99 million, respectively. The difference is being amortized over the life of the underlying assets.
v3.24.0.1
Significant Accounting Policies
 12 Months Ended
Dec. 31, 2023
Accounting Policies [Abstract]  
Significant Accounting Policies SIGNIFICANT ACCOUNTING POLICIES
Other Income
Other income for the Registrants is recognized for non-operating income such as equity earnings of equity method investees, allowance for equity funds used during construction, contract services, and certain investment income, primarily from trading securities held in DTE Energy's rabbi trust. For 2021, the DTE Vantage segment also recognized Other income in connection with the sale of membership interests in reduced emissions fuel facilities to investors.
The following is a summary of DTE Energy's Other income:
202320222021
(In millions)
Allowance for equity funds used during construction$42 $29 $27 
Contract services26 28 27 
Investment income(a)
17 3 14 
Equity earnings (losses) of equity method investees3 (14)38 
Income from REF entities— — 141 
Other14 12 7 
$102 $58 $254 
_______________________________________
(a)Investment losses are recorded separately to Other expenses on the Consolidated Statements of Operations.
The following is a summary of DTE Electric's Other income:
202320222021
(In millions)
Allowance for equity funds used during construction$40 $26 $25 
Contract services25 27 27 
Investment income(a)
11 3 10 
Other11 9 9 
$87 $65 $71 
_______________________________________
(a)Investment losses are recorded separately to Other expenses on the Consolidated Statements of Operations.
For information on equity earnings of equity method investees by segment, see Note 22 to the Consolidated Financial Statements, "Segment and Related Information."
Accounting for ISO Transactions
DTE Electric participates in the energy market through MISO. MISO requires that DTE Electric submit hourly day-ahead, real-time, and FTR bids and offers for energy at locations across the MISO region. DTE Electric accounts for MISO transactions on a net hourly basis in each of the day-ahead, real-time, and FTR markets. In any single hour, transactions in each of the MISO energy markets are netted based on MWh to determine if DTE Electric is in a net sale or purchase position. Net purchases are recorded in Fuel, purchased power, and gas — utility and net sales are recorded in Operating Revenues — Utility operations on the Registrants' Consolidated Statements of Operations.
The Energy Trading segment participates in the energy markets through various ISOs and RTOs. These markets require that Energy Trading submits hourly day-ahead, real-time bids and offers for energy at locations across each region. Energy Trading submits bids in the annual and monthly auction revenue rights and FTR auctions to the RTOs. Energy Trading accounts for these transactions on a net hourly basis for the day-ahead, real-time, and FTR markets. These transactions are related to trading contracts which, if derivatives, are presented on a net basis in Operating Revenues — Non-utility operations, and if non-derivatives, the realized gains and losses for sales are recorded in Operating Revenues — Non-utility operations and purchases are recorded in Fuel, purchased power, gas, and other — non-utility in the DTE Energy Consolidated Statements of Operations.
DTE Electric and Energy Trading record accruals for future net purchases adjustments based on historical experience and reconcile accruals to actual costs when invoices are received from MISO and other ISOs and RTOs.
Derivatives
Energy Trading classifies derivative transactions as revenue or expense based on the intent of the transaction (buy or sell). Revenues are recorded on a gross or net basis within the income statement depending upon whether it represents a non-trading activity or trading activity, respectively. Cash flows associated with derivative instruments, including related gains and losses, are presented as Operating Activities within the Registrants' Consolidated Statements of Cash Flows. For additional information, refer to Note 13 to the Consolidated Financial Statements, "Financial and Other Derivative Instruments".
Changes in Accumulated Other Comprehensive Income (Loss)
Comprehensive income (loss) is the change in common shareholders’ equity during a period from transactions and events from non-owner sources, including Net Income. The amounts recorded to Accumulated other comprehensive income (loss) for DTE Energy include changes in benefit obligations, consisting of deferred actuarial losses and prior service costs, unrealized gains and losses from derivatives accounted for as cash flow hedges, and foreign currency translation adjustments, if any. DTE Energy releases income tax effects from accumulated other comprehensive income when the circumstances upon which they are premised cease to exist.
Changes in Accumulated other comprehensive income (loss) are presented in DTE Energy's Consolidated Statements of Changes in Equity and DTE Electric's Consolidated Statements of Changes in Shareholder's Equity, if any. For the years ended December 31, 2023 and 2022, reclassifications out of Accumulated other comprehensive income (loss) were not material.
The following table summarizes the changes in DTE Energy's Accumulated other comprehensive income (loss) by component(a) for the years ended December 31, 2023 and 2022:
Net Unrealized Gain (Loss) on Derivatives
Benefit Obligations(b)
Foreign Currency TranslationTotal
(In millions)
Balance, December 31, 2021$(11)$(101)$— $(112)
Other comprehensive income before reclassifications5 — — 5 
Amounts reclassified from Accumulated other comprehensive loss2 43 — 45 
Net current period Other comprehensive income7 43 — 50 
Balance, December 31, 2022$(4)$(58)$— $(62)
Other comprehensive income (loss) before reclassifications(14)3 2 (9)
Amounts reclassified from Accumulated other comprehensive loss1 3 — 4 
Net current period Other comprehensive income (loss)(13)6 2 (5)
Balance, December 31, 2023$(17)$(52)$2 $(67)
______________________________________
(a)All amounts are net of tax, except for Foreign currency translation.
(b)Benefit obligations activity includes changes in actuarial (gain) loss and prior service cost in DTE Energy's pension and other postretirement benefit plans. Refer to Note 20 to the Consolidated Financial Statements, "Retirement Benefits and Trusteed Assets", for details regarding this activity. For 2022, the change in benefit obligations due to actuarial (gain) loss increased from prior years, primarily due to higher discount rates and other plan changes.
Cash, Cash Equivalents, and Restricted Cash
Cash and cash equivalents include cash on hand, cash in banks, and temporary investments purchased with remaining maturities of three months or less. Restricted cash includes funds held in separate bank accounts and principally consists of amounts at DTE Securitization I and DTE Securitization II to pay for debt service and other qualified costs. Restricted cash also consists of funds held to satisfy contractual obligations related to a large construction project at DTE Vantage. Restricted cash designated for payments within one year is classified as a Current Asset.
Financing Receivables
Financing receivables are primarily composed of trade receivables, notes receivable, and unbilled revenue. The Registrants' financing receivables are stated at net realizable value.
DTE Energy had unbilled revenues of $882 million and $1.2 billion at December 31, 2023 and 2022, respectively, including $311 million and $290 million of DTE Electric unbilled revenues, respectively, included in Customer Accounts receivable.
The Registrants monitor the credit quality of their financing receivables on a regular basis by reviewing credit quality indicators and monitoring for trigger events, such as a credit rating downgrade or bankruptcy. Credit quality indicators include, but are not limited to, ratings by credit agencies where available, collection history, collateral, counterparty financial statements and other internal metrics. Utilizing such data, the Registrants have determined three internal grades of credit quality. Internal grade 1 includes financing receivables for counterparties where credit rating agencies have ranked the counterparty as investment grade. To the extent credit ratings are not available, the Registrants utilize other credit quality indicators to determine the level of risk associated with the financing receivable. Internal grade 1 may include financing receivables for counterparties for which credit rating agencies have ranked the counterparty as below investment grade; however, due to favorable information on other credit quality indicators, the Registrants have determined the risk level to be similar to that of an investment grade counterparty. Internal grade 2 includes financing receivables for counterparties with limited credit information and those with a higher risk profile based upon credit quality indicators. Internal grade 3 reflects financing receivables for which the counterparties have the greatest level of risk, including those in bankruptcy status.
The following represents the Registrants' financing receivables by year of origination, classified by internal grade of credit risk, including current year-to-date gross write-offs, if any. The related credit quality indicators and risk ratings utilized to develop the internal grades have been updated through December 31, 2023.
DTE EnergyDTE Electric
Year of origination
202320222021 and priorTotal2023 and prior
(In millions)
Notes receivable
Internal grade 1$19 $— $4 $23 $18 
Internal grade 223 112 17 152 1 
Total notes receivable(a)
$42 $112 $21 $175 $19 
Net investment in leases
Internal grade 1$— $— $37 $37 $— 
Internal grade 2— 66 184 250 — 
Total net investment in leases(a)
$— $66 $221 $287 $— 
_______________________________________
(a)For DTE Energy and DTE Electric, the current portion is included in Current Assets — Other on the respective Consolidated Statements of Financial Position. For DTE Electric, the noncurrent portion is included in Other Assets — Other.
The allowance for doubtful accounts on accounts receivable for the utility entities is generally calculated using an aging approach that utilizes rates developed in reserve studies. DTE Electric and DTE Gas establish an allowance for uncollectible accounts based on historical losses and management's assessment of existing and future economic conditions, customer trends and other factors. Customer accounts are generally considered delinquent if the amount billed is not received by the due date, which is typically in 21 days, however, factors such as assistance programs may delay aggressive action. DTE Electric and DTE Gas generally assess late payment fees on trade receivables based on past-due terms with customers. Customer accounts are written off when collection efforts have been exhausted. The time period for write-off is 150 days after service has been terminated.
The customer allowance for doubtful accounts for non-utility businesses and other receivables for both utility and non-utility businesses is generally calculated based on specific review of probable future collections based on receivable balances generally in excess of 30 days. Existing and future economic conditions, customer trends and other factors are also considered. Receivables are written off on a specific identification basis and determined based upon the specific circumstances of the associated receivable.
Notes receivable for DTE Energy are primarily comprised of finance lease receivables and loans that are included in Notes Receivable and Other current assets on DTE Energy's Consolidated Statements of Financial Position. Notes receivable for DTE Electric are primarily comprised of loans.
The Registrants establish an allowance for credit loss for principal and interest amounts due that are estimated to be uncollectible in accordance with the contractual terms of the note receivable. In determining the allowance for credit losses for notes receivable, the Registrants consider the historical payment experience and other factors that are expected to have a specific impact on the counterparty's ability to pay including existing and future economic conditions. Notes receivable are typically considered delinquent when payment is not received for periods ranging from 60 to 120 days. If amounts are no longer probable of collection, the Registrants may consider the note receivable impaired, adjust the allowance, and cease accruing interest (nonaccrual status).
Cash payments received on nonaccrual status notes receivable, that do not bring the account contractually current, are first applied to the contractually owed past due interest, with any remainder applied to principal. Accrual of interest is generally resumed when the note receivable becomes contractually current.
The following tables present a roll-forward of the activity for the Registrants' financing receivables credit loss reserves:
DTE EnergyDTE Electric
Trade accounts receivableOther receivablesTotalTrade and other accounts receivable
(In millions)
Balance at December 31, 2020$101 $3 $104 $57 
Current period provision53 1 54 36 
Write-offs charged against allowance(126)(1)(127)(77)
Recoveries of amounts previously written off61 — 61 38 
Balance at December 31, 2021$89 $3 $92 $54 
Current period provision49 — 49 33 
Write-offs charged against allowance(105)(2)(107)(66)
Recoveries of amounts previously written off45 — 45 28 
Balance at December 31, 2022$78 $1 $79 $49 
Current period provision52 — 52 36 
Write-offs charged against allowance(112)— (112)(72)
Recoveries of amounts previously written off44 — 44 28 
Balance at December 31, 2023$62 $1 $63 $41 
Uncollectible expense for the Registrants is primarily comprised of the current period provision for allowance for doubtful accounts and is summarized as follows:
Year Ended December 31,
202320222021
(In millions)
DTE Energy$55 $55 $55 
DTE Electric$38 $35 $36 
There are no material amounts of past due financing receivables for the Registrants as of December 31, 2023.
Inventories
Inventory related to utility and non-utility operations is valued at the lower of cost or net realizable value, where cost is generally valued using average cost. Inventory primarily includes fuel, gas, materials, and supplies. Other inventories include RECs, emission allowances, and other environmental products in the Energy Trading segment.
DTE Gas' natural gas inventory of $73 million and $44 million as of December 31, 2023 and 2022, respectively, is determined using the last-in, first-out (LIFO) method. The replacement cost of gas in inventory exceeded the LIFO cost by $50 million and $152 million at December 31, 2023 and 2022, respectively.
Property, Retirement and Maintenance, and Depreciation and Amortization
Property is stated at cost and includes construction-related labor, materials, overheads, and AFUDC for utility property. The cost of utility properties retired is charged to accumulated depreciation. Expenditures for maintenance and repairs are charged to expense when incurred.
Utility property at DTE Electric and DTE Gas is depreciated over its estimated useful life using straight-line rates approved by the MPSC. DTE Energy's non-utility property is depreciated over its estimated useful life using the straight-line method. Depreciation and amortization expense also includes the amortization of certain regulatory assets and liabilities for the Registrants.
The cost of nuclear fuel is capitalized. The amortization of nuclear fuel is included within Fuel, purchased power, and gas — utility in the DTE Energy Consolidated Statements of Operations, and Fuel and purchased power in the DTE Electric Consolidated Statements of Operations, and is recorded using the units-of-production method.
See Note 6 to the Consolidated Financial Statements, "Property, Plant, and Equipment."
Long-Lived Assets
Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. If the carrying amount of the asset exceeds the expected undiscounted future cash flows generated by the asset, an impairment loss is recognized resulting in the asset being written down to its estimated fair value. Assets to be disposed of are reported at the lower of the carrying amount or fair value, less costs to sell.
Goodwill
DTE Energy has goodwill resulting from business combinations. For each reporting unit with goodwill, DTE Energy performs an impairment test annually or whenever events or circumstances indicate that the value of goodwill may be impaired. For the years ended December 31, 2023 and 2022, there were no impairments resulting from these tests and there were no other changes in the carrying amount of goodwill.
Intangible Assets
The Registrants have certain Intangible assets as shown below:
December 31, 2023December 31, 2022
Useful LivesGross Carrying ValueAccumulated AmortizationNet Carrying ValueGross Carrying ValueAccumulated AmortizationNet Carrying Value
(In millions)
Intangible assets subject to amortization
Contract intangibles
12 to 26 years
$246 $(103)$143 $246 $(88)$158 
Carbon offsets10 — 10 6 — 6 
Renewable energy credits2 — 2 2 — 2 
Other1 — 1 — — — 
Intangible assets not subject to amortization(a)
13 — 13 8 — 8 
DTE Energy Long-term intangible assets$259 $(103)$156 $254 $(88)$166 
______________________________________
(a)Amounts are charged to expense, using average cost, as they are consumed in the operation of the business. DTE Electric intangible assets include the Renewable energy credits above, which are included in Other Assets — Other on the DTE Electric Consolidated Statements of Financial Position.
The following table summarizes DTE Energy's estimated contract intangible amortization expense expected to be recognized during each year through 2028:
20242025202620272028
(In millions)
Estimated amortization expense$16 $16 $14 $14 $14 
DTE Energy amortizes contract intangible assets on a straight-line basis over the expected period of benefit. DTE Energy's Intangible assets amortization expense was $15 million in 2023 and $16 million in 2022 and 2021.
Cloud Computing Arrangements
The Registrants capitalize implementation costs incurred in a cloud computing arrangement that is a service contract consistent with capitalized implementation costs incurred to develop or obtain internal-use software. Capitalized costs are recorded in Other noncurrent assets on the Consolidated Statements of Financial Position and amortization of the costs is reflected in Operation and maintenance within the Consolidated Statements of Operations. Costs are amortized on a straight-line basis over the life of the contract. Contracts primarily involve the implementation or upgrade of cloud-based solutions for generation and distribution operations and customer service support.
The following balances for cloud computing costs relate to DTE Energy:
Year Ended December 31,
202320222021
(In millions)
Amortization expense of capitalized cloud computing costs$10 $4 $1 
Gross value of capitalized cloud computing costs$56 $42 
Accumulated amortization of capitalized cloud computing costs$15 $5 
The following balances for cloud computing costs relate to DTE Electric:
Year Ended December 31,
202320222021
(In millions)
Amortization expense of capitalized cloud computing costs$8 $3 $1 
Gross value of capitalized cloud computing costs$44 $33 
Accumulated amortization of capitalized cloud computing costs$12 $4 
Excise and Sales Taxes
The Registrants record the billing of excise and sales taxes as a receivable with an offsetting payable to the applicable taxing authority, with no net impact on the Registrants’ Consolidated Statements of Operations.
Deferred Debt Costs
The costs related to the issuance of long-term debt are deferred and amortized over the life of each debt issue. The deferred amounts are included as a direct deduction from the carrying amount of each debt issue in Mortgage bonds, notes, and other and Securitization bonds on the Registrants' Consolidated Statements of Financial Position and in Junior subordinated debentures on DTE Energy's Consolidated Statements of Financial Position. In accordance with MPSC regulations applicable to DTE Energy’s electric and gas utilities, the unamortized discount, premium, and expense related to utility debt redeemed with a refinancing are amortized over the life of the replacement issue. Discounts, premiums, and expense on early redemptions of debt associated with DTE Energy's non-utility operations are charged to earnings.
Investments in Debt and Equity Securities
The Registrants generally record investments in debt and equity securities at market value with unrealized gains or losses included in earnings. Changes in the fair value of Fermi 2 nuclear decommissioning investments are recorded as adjustments to Regulatory assets or liabilities, due to a recovery mechanism from customers. The Registrants' equity investments are reviewed for impairment each reporting period. If the assessment indicates that an impairment exists, a loss is recognized resulting in the equity investment being written down to its estimated fair value. See Note 12 of the Consolidated Financial Statements, "Fair Value."
DTE Energy Foundation
DTE Energy made a charitable contribution to the DTE Energy Foundation of $25 million for the year ended December 31, 2021. There were no contributions for the years ended December 31, 2023 and 2022. The DTE Energy Foundation is a non-consolidated not-for-profit private foundation, the purpose of which is to contribute to and assist charitable organizations.
Other Accounting Policies
See the following notes for other accounting policies impacting the Registrants’ Consolidated Financial Statements:
NoteTitle
5Revenue
6Property, Plant, and Equipment
8Asset Retirement Obligations
9Regulatory Matters
10Income Taxes
12Fair Value
13Financial and Other Derivative Instruments
17Leases
20Retirement Benefits and Trusteed Assets
21Stock-Based Compensation
22Segment and Related Information
23Related Party Transactions
v3.24.0.1
New Accounting Pronouncements
 12 Months Ended
Dec. 31, 2023
Accounting Standards Update and Change in Accounting Principle [Abstract]  
New Accounting Pronouncements NEW ACCOUNTING PRONOUNCEMENTS
Recently Adopted Pronouncements
In March 2022, the FASB issued ASU No. 2022-02, Financial Instruments – Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures. The amendments in this update eliminate the accounting guidance for troubled debt restructurings by creditors that have adopted the Current Expected Credit Loss (“CECL”) model under ASC 326 and enhance the disclosure requirements for loan refinancings and restructurings made with borrowers experiencing financial difficulty. Additionally, the amendments require the disclosure of current period gross write-offs for financing receivables and net investment in leases by year of origination in the vintage disclosures. The Registrants adopted the ASU effective January 1, 2023 using the prospective approach, with no impact on the Registrants' financial position or results of operations. Gross write-offs, if any, will be disclosed in the Financing Receivables section of Note 2 to the Consolidated Financial Statements, "Significant Accounting Policies."
Recently Issued Pronouncements
In November 2023, the FASB issued ASU No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The amendments in this update require disclosure of incremental segment information and the title and position of the chief operating decision maker ("CODM"). Registrants will be required to disclose significant segment expenses that are regularly provided to the CODM, as well as additional information on segment profit and loss measures and how such information is used by the CODM to assess segment performance and allocate resources. The ASU is effective for the Registrants for fiscal years beginning after December 15, 2023, and interim periods for fiscal years beginning after December 15, 2024, on a retrospective basis. Early adoption is permitted. The Registrants will apply the guidance upon the effective date.
In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendments in this update require enhanced income tax disclosures, particularly related to a reporting entity's effective tax rate reconciliation and income taxes paid. For the rate reconciliation table, the update requires additional categories of information about federal, state, and foreign taxes and details about significant reconciling items, subject to a quantitative threshold. Income taxes paid must be similarly disaggregated by federal, state, and foreign based on a quantitative threshold. The ASU is effective for the Registrants for annual periods beginning after December 15, 2024. The guidance shall be applied on a prospective basis with the option to apply retrospectively. Early adoption is permitted. The Registrants will apply the guidance upon the effective date.
v3.24.0.1
Discontinued Operations
 12 Months Ended
Dec. 31, 2023
Discontinued Operations and Disposal Groups [Abstract]  
Discontinued Operations DISCONTINUED OPERATIONS
Separation of DT Midstream
On July 1, 2021, DTE Energy completed the separation of DT Midstream, its former natural gas pipeline, storage, and gathering non-utility business. The table below reflects the financial results of DT Midstream that are included in discontinued operations within the Consolidated Statements of Operations. These results include the impact of tax-related adjustments and all transaction costs related to the separation. General corporate overhead costs have been excluded and no portion of corporate interest costs were allocated to discontinued operations.
Year Ended December 31,
2021
Operating Revenues — Non-utility operations$405 
Operating Expenses
Cost of gas and other — non-utility15 
Operation and maintenance(a)
123 
Depreciation and amortization82 
Taxes other than income13 
Asset (gains) losses and impairments, net17 
250 
Operating Income155 
Other (Income) and Deductions
Interest expense50 
Interest income(4)
Other income(62)
(16)
Income from Discontinued Operations Before Income Taxes171 
Income Tax Expense54 
Net Income from Discontinued Operations, Net of Taxes117 
Less: Net Income Attributable to Noncontrolling Interests6 
Net Income from Discontinued Operations$111 
_______________________________________
(a)Includes separation transaction costs of $59 million for various legal, accounting and other professional services fees.
The following table is a summary of significant non-cash items, capital expenditures, and significant financing activities of discontinued operations included in DTE Energy's Consolidated Statements of Cash Flows:
Year Ended December 31,
2021
(In millions)
Operating Activities
Depreciation and amortization$82 
Deferred income taxes53 
Equity earnings of equity method investees(59)
Asset (gains) losses and impairments, net19 
Investing Activities
Plant and equipment expenditures — non-utility(60)
v3.24.0.1
Revenue
 12 Months Ended
Dec. 31, 2023
Revenue from Contract with Customer [Abstract]  
Revenue REVENUE
Significant Accounting Policy
Revenue is measured based upon the consideration specified in a contract with a customer at the time when performance obligations are satisfied. A performance obligation is a promise in a contract to transfer a distinct good or service or a series of distinct goods or services to the customer. The Registrants recognize revenue when performance obligations are satisfied by transferring control over a product or service to a customer. The Registrants have determined control to be transferred when the product is delivered, or the service is provided to the customer.
Rates for DTE Electric and DTE Gas include provisions to adjust billings for fluctuations in fuel and purchased power costs, cost of natural gas, and certain other costs. Revenues are adjusted for differences between actual costs subject to reconciliation and the amounts billed in current rates. Under or over recovered revenues related to these cost recovery mechanisms are included in Regulatory assets or liabilities on the Registrants' Consolidated Statements of Financial Position and are recovered or returned to customers through adjustments to the billing factors.
For discussion of derivative contracts, see Note 13 to the Consolidated Financial Statements, "Financial and Other Derivative Instruments."
Disaggregation of Revenue
The following is a summary of revenues disaggregated by segment for DTE Energy:
202320222021
(In millions)
Electric(a)
Residential$2,847 $2,911 $2,926 
Commercial2,114 1,958 1,908 
Industrial732 659 628 
Other(b)
125 884 359 
Total Electric operating revenues$5,818 $6,412 $5,821 
Gas
Gas sales$1,324 $1,442 $1,058 
End User Transportation250 264 233 
Intermediate Transportation85 81 82 
Other(b)
89 137 180 
Total Gas operating revenues$1,748 $1,924 $1,553 
Other segment operating revenues
DTE Vantage$809 $848 $1,482 
Energy Trading$4,612 $10,308 $6,831 
_______________________________________
(a)Revenues generally represent those of DTE Electric, except $14 million, $15 million, and $12 million of Other revenues related to DTE Sustainable Generation for the years ended December 31, 2023, 2022, and 2021, respectively.
(b)Includes revenue adjustments related to various regulatory mechanisms, including the PSCR at the Electric segment and GCR at the Gas segment. Revenues related to these mechanisms may vary based on changes in the cost of fuel, purchased power, and gas.
Revenues included the following which were outside the scope of Topic 606:
202320222021
(In millions)
Electric — Alternative Revenue Programs$36 $35 $36 
Electric — Other revenues$22 $19 $19 
Gas — Alternative Revenue Programs$16 $9 $10 
Gas — Other revenues$8 $7 $6 
DTE Vantage — Leases$59 $82 $103 
Energy Trading — Derivatives$3,436 $8,489 $5,603 
Nature of Goods and Services
The following is a description of principal activities, separated by reportable segments, from which DTE Energy generates revenue. For more detailed information about reportable segments, see Note 22 to the Consolidated Financial Statements, “Segment and Related Information.”
The Registrants have contracts with customers which may contain more than one performance obligation. When more than one performance obligation exists in a contract, the consideration under the contract is allocated to the performance obligations based on the relative standalone selling price. DTE Energy generally determines standalone selling prices based on the prices charged to customers or the use of the adjusted market assessment approach. The adjusted market assessment approach involves the evaluation of the market in which DTE Energy sells goods or services and estimating the price that a customer in that market would be willing to pay.
Under Topic 606, when a customer simultaneously receives and consumes the product or service provided, revenue is considered to be recognized over time. Alternatively, if it is determined that the criteria for recognition of revenue over time is not met, the revenue is considered to be recognized at a point in time.
Electric
Electric consists principally of DTE Electric. Electric revenues are primarily comprised of the supply and delivery of electricity, related capacity, and RECs. Revenues are primarily associated with cancellable contracts, with the exception of certain long-term contracts with commercial and industrial customers. Revenues, including estimated unbilled amounts, are generally recognized over time based upon volumes delivered or through the passage of time ratably based upon providing a stand-ready service. The Registrants have determined that the above methods represent a faithful depiction of the transfer of control to the customer. Unbilled revenues are typically determined utilizing approved tariff rates and estimated meter volumes. Estimated unbilled amounts recognized in revenue are subject to adjustment in the following reporting period as actual volumes by customer class are known. Revenues are typically subject to tariff rates based upon customer class and type of service and are billed and received monthly. Tariff rates are determined by the MPSC on a per unit or monthly basis.
Gas
Gas consists principally of DTE Gas. Gas revenues are primarily comprised of the supply and delivery of natural gas, and other services including storage, transportation, and appliance maintenance. Revenues are primarily associated with cancellable contracts with the exception of certain long-term contracts with commercial and industrial customers. Revenues, including estimated unbilled amounts, are generally recognized over time based upon volumes delivered or through the passage of time ratably based upon providing a stand-ready service. DTE Energy has determined that the above methods represent a faithful depiction of the transfer of control to the customer. Unbilled revenues are typically determined using both estimated meter volumes and estimated usage based upon the number of unbilled days and historical temperatures. Estimated unbilled amounts recognized in revenue are subject to adjustment in the following reporting period as actual volumes by customer class and service type are known. Revenues are typically subject to tariff rates or other rates subject to regulatory oversight and are billed and received monthly. Tariff rates are determined by the MPSC on a per unit or monthly basis.
DTE Vantage
DTE Vantage revenues include contracts accounted for as leases which are outside of the scope of Topic 606. For performance obligations within the scope of Topic 606, the timing of revenue recognition is dependent upon when control over the associated product or service is transferred.
Revenues at DTE Vantage, within the scope of Topic 606, generally consist of sales of blast furnace coke, renewable natural gas and related credits, electricity, equipment maintenance services, and other energy related products and services. Revenues for the sale of blast furnace coke, including estimated unbilled amounts, are recognized at a point in time when the product is delivered, which represents the transfer of control to the customer. Other revenues are generally recognized over time based upon volumes delivered or services provided, or through the passage of time ratably based upon providing a stand-ready service. DTE Energy has determined that the above methods represent a faithful depiction of the transfer of control to the customer. Market based pricing structures exist in such contracts including adjustments for consumer price or other indices. Consideration may consist of both fixed and variable components. Generally, uncertainties in the variable consideration components are resolved, and revenues are known at the time of recognition. Billing terms vary and are generally monthly with payment terms typically within 30 days following billing.
Energy Trading
Energy Trading revenues consist primarily of derivative contracts outside of the scope of Topic 606. For performance obligations within the scope of Topic 606, the timing of revenue recognition is dependent upon when control over the associated product or service is transferred.
Revenues, including estimated unbilled amounts, within the scope of Topic 606 arising from the sale of natural gas, electricity, power capacity, and other energy related products are generally recognized over time based upon volumes delivered or through the passage of time ratably based upon providing a stand-ready service. DTE Energy has determined that the above methods represent a faithful depiction of the transfer of control to the customer. Revenues are known at the time of recognition. Payment for the aforementioned revenues is generally due from customers in the month following delivery.
Revenues associated with RECs and other environmental products are recognized at a point in time when control is transferred to the customer which is deemed to be when these products are entered for transfer to the customer in the applicable tracking system. Revenues associated with RECs under a wholesale full requirements power contract are deferred until control has been transferred. The deferred revenues represent a contract liability for which payment has been received and the amounts have been estimated using the adjusted market assessment approach. With the exception of RECs, generally all other performance obligations associated with wholesale full requirements power contracts are satisfied over time in conjunction with the delivery of power. At the time power is delivered, DTE Energy may not have control over the RECs as the RECs are not self-generated and may not yet have been procured resulting in deferred revenues.
Deferred Revenue
The following is a summary of deferred revenue activity for DTE Energy:
20232022
(In millions)
Beginning Balance, January 1$94 $78 
Increases due to cash received or receivable, excluding amounts recognized as revenue during the period103 91 
Revenue recognized that was included in the deferred revenue balance at the beginning of the period(91)(75)
Ending Balance, December 31$106 $94 
The deferred revenues at DTE Energy generally represent amounts paid by or receivables from customers for which the associated performance obligation has not yet been satisfied. Deferred revenues include amounts associated with REC performance obligations under certain wholesale full requirements power contracts. Deferred revenues associated with RECs are recognized as revenue when control of the RECs has transferred. Other performance obligations associated with deferred revenues include providing products and services related to customer prepayments. Deferred revenues associated with these products and services are recognized when control has transferred to the customer.
The following table represents deferred revenue amounts for DTE Energy that are expected to be recognized as revenue in future periods:
DTE Energy
(In millions)
2024$103 
20251 
20261 
20271 
2028— 
2029 and thereafter— 
$106 
Transaction Price Allocated to the Remaining Performance Obligations
In accordance with optional exemptions available under Topic 606, the Registrants did not disclose the value of unsatisfied performance obligations for (1) contracts with an original expected length of one year or less, (2) with the exception of fixed consideration, contracts for which revenue is recognized at the amount to which the Registrants have the right to invoice for goods provided and services performed, and (3) contracts for which variable consideration relates entirely to an unsatisfied performance obligation.
Such contracts consist of varying types of performance obligations across the segments, including the supply and delivery of energy related products and services. Contracts with variable volumes and/or variable pricing, including those with pricing provisions tied to a consumer price or other index, have also been excluded as the related consideration under the contract is variable at inception of the contract. Contract lengths vary from cancellable to multi-year.
The Registrants expect to recognize revenue for the following amounts related to fixed consideration associated with remaining performance obligations in each of the future periods noted:
DTE EnergyDTE Electric
(In millions)
2024$245 $7 
2025191 — 
2026109 — 
202776 — 
202858 — 
2029 and thereafter320 1 
$999 $8 
v3.24.0.1
Property, Plant, and Equipment
 12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
Property, Plant, and Equipment PROPERTY, PLANT, AND EQUIPMENT
The following is a summary of Property, plant, and equipment by classification as of December 31:
20232022
Property, plant, and equipment(In millions)
DTE Electric
Zero carbon generation
Nuclear$3,812 $3,684 
Renewables3,074 2,567 
Fossil and other generation4,157 8,789 
Distribution13,673 12,502 
Other3,220 3,049 
Total DTE Electric27,936 30,591 
DTE Gas
Distribution5,838 5,376 
Storage578 607 
Transmission and other1,613 1,534 
Total DTE Gas8,029 7,517 
DTE Vantage1,075 1,059 
Other234 179 
Total DTE Energy$37,274 $39,346 
Accumulated depreciation and amortization
DTE Electric
Zero carbon generation
Nuclear$(479)$(428)
Renewables(524)(426)
Fossil and other generation(1,393)(3,352)
Distribution(3,205)(3,040)
Other(969)(849)
Total DTE Electric(6,570)(8,095)
DTE Gas
Distribution(1,365)(1,330)
Storage(132)(163)
Transmission and other(493)(461)
Total DTE Gas(1,990)(1,954)
DTE Vantage(479)(469)
Other(66)(61)
Total DTE Energy$(9,105)$(10,579)
Net DTE Energy Property, plant, and equipment$28,169 $28,767 
Net DTE Electric Property, plant, and equipment$21,366 $22,496 
AFUDC and Capitalized Interest
AFUDC represents the cost of financing construction projects for regulated businesses, including the estimated cost of debt and authorized return on equity. The debt component is recorded as a reduction to Interest expense and the equity component is recorded as Other income on the Registrants' Consolidated Statements of Operations. Non-regulated businesses record capitalized interest as a reduction to Interest expense.
The AFUDC and capitalized interest rates were as follows for the years ended December 31:
202320222021
DTE Electric AFUDC5.53 %5.46 %5.46 %
DTE Gas AFUDC5.41 %5.41 %5.55 %
Non-regulated businesses capitalized interest3.00 %3.00 %3.30 %
The following is a summary of AFUDC and interest capitalized for the years ended December 31:
202320222021
DTE Energy(In millions)
Allowance for debt funds used during construction and interest capitalized$20 $13 $12 
Allowance for equity funds used during construction42 29 27 
Total$62 $42 $39 
202320222021
DTE Electric(In millions)
Allowance for debt funds used during construction$15 $11 $11 
Allowance for equity funds used during construction40 26 25 
Total$55 $37 $36 
Depreciation and Amortization
The composite depreciation rate for DTE Electric was approximately 4.4% in 2023 and 4.2% in 2022 and 2021. The composite depreciation rate for DTE Gas was 2.9% in 2023, 2022 and 2021. The average estimated useful life for each major class of utility Property, plant, and equipment as of December 31, 2023 follows:
Estimated Useful Lives in Years
UtilityGenerationDistributionStorage
DTE Electric3438N/A
DTE GasN/A4958
The estimated useful lives for DTE Electric's Other utility assets range from 3 to 80 years, while the estimated useful lives for DTE Gas' Transmission and other utility assets range from 3 to 80 years. The estimated useful lives for major classes of DTE Energy's non-utility assets and facilities range from 3 to 50 years.
The following is a summary of Depreciation and amortization expense for DTE Energy:
202320222021
(In millions)
Property, plant, and equipment$1,239 $1,148 $1,095 
Regulatory assets and liabilities344 297 259 
Intangible assets15 16 16 
Other8 7 7 
$1,606 $1,468 $1,377 
The following is a summary of Depreciation and amortization expense for DTE Electric:
202320222021
(In millions)
Property, plant, and equipment$1,029 $951 $890 
Regulatory assets and liabilities292 248 214 
Other5 5 5 
$1,326 $1,204 $1,109 
Capitalized Software
Capitalized software costs are classified as Property, plant, and equipment and the related amortization is included in Accumulated depreciation and amortization on the Registrants' Consolidated Statements of Financial Position. The Registrants capitalize the costs associated with computer software developed or obtained for use in their businesses. The Registrants amortize capitalized software costs on a straight-line basis over the expected period of benefit, ranging from 3 to 15 years for both DTE Energy and DTE Electric.
The following balances for capitalized software relate to DTE Energy:
Year Ended December 31,
202320222021
(In millions)
Amortization expense of capitalized software$189 $159 $145 
Gross carrying value of capitalized software$940 $796 
Accumulated amortization of capitalized software$427 $406 
The following balances for capitalized software relate to DTE Electric:
Year Ended December 31,
202320222021
(In millions)
Amortization expense of capitalized software$172 $146 $132 
Gross carrying value of capitalized software$849 $692 
Accumulated amortization of capitalized software$369 $343 
v3.24.0.1
Jointly-Owned Utility Plant
 12 Months Ended
Dec. 31, 2023
Jointly Owned Utility Plant, Net Ownership Amount [Abstract]  
Jointly-Owned Utility Plant JOINTLY-OWNED UTILITY PLANT
DTE Electric has joint ownership interest in two power plants, Belle River and Ludington Hydroelectric Pumped Storage. DTE Electric’s share of direct expenses of the jointly-owned plants are included in Fuel, purchased power, and gas — utility and Operation and maintenance expenses in the DTE Energy Consolidated Statements of Operations and Fuel and purchased power— utility and Operation and maintenance expenses in the DTE Electric Consolidated Statements of Operations.
DTE Electric's ownership information of the two utility plants as of December 31, 2023 was as follows:
Belle RiverLudington
Hydroelectric
Pumped Storage
In-service date1984-19851973
Total plant capacity1,270 MW2,290 MW
Ownership interest81%49%
Investment in Property, plant, and equipment (in millions)$2,000 $652 
Accumulated depreciation (in millions)$1,091 $149 
Belle River
The Michigan Public Power Agency (MPPA) has ownership interests in Belle River Unit No. 1 and other related facilities. The MPPA is entitled to 19% of the total capacity and energy of the plant and is responsible for the same percentage of the plant’s operation, maintenance, and capital improvement costs.
Ludington Hydroelectric Pumped Storage
Consumers Energy Company has an ownership interest in the Ludington Hydroelectric Pumped Storage Plant. Consumers Energy is entitled to 51% of the total capacity and energy of the plant and is responsible for the same percentage of the plant’s operation, maintenance, and capital improvement costs.
For discussion of the ongoing contract dispute related to the Ludington Plant, see Note 18 to the Consolidated Financial Statements, "Commitments and Contingencies."
v3.24.0.1
Asset Retirement Obligations
 12 Months Ended
Dec. 31, 2023
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligations ASSET RETIREMENT OBLIGATIONS
DTE Electric has a legal retirement obligation for the decommissioning costs for its Fermi 1 and Fermi 2 nuclear plants, dismantlement of facilities located on leased property, and various other operations. DTE Electric has conditional retirement obligations for asbestos and PCB removal at certain of its power plants and various distribution equipment. DTE Gas has conditional retirement obligations for gas pipelines, certain service centers, and compressor and gate stations. The Registrants recognize such obligations as liabilities at fair market value when they are incurred, which generally is at the time the associated assets are placed in service. Fair value is measured using expected future cash outflows discounted at the Registrants' credit-adjusted risk-free rate. For its utility operations, the Registrants recognize in the Consolidated Statements of Operations removal costs in accordance with regulatory treatment. Any differences between costs recognized related to asset retirement and those reflected in rates are recognized as either a Regulatory asset or liability on the Consolidated Statements of Financial Position.
If a reasonable estimate of fair value cannot be made in the period in which the retirement obligation is incurred, such as for assets with indeterminate lives, the liability is recognized when a reasonable estimate of fair value can be made. Natural gas storage system and certain other distribution assets for DTE Gas and substations, manholes, and certain other distribution assets for DTE Electric have an indeterminate life. Therefore, no liability has been recorded for these assets.
Changes to Asset retirement obligations for 2023, 2022, and 2021 were as follows:
202320222021
DTE Energy(In millions)
Asset retirement obligations at January 1$3,460 $3,162 $2,829 
Accretion198 184 167 
Liabilities incurred7 24 28 
Liabilities settled(96)(7)(30)
Revision in estimated cash flows(13)97 168 
Asset retirement obligations at December 31$3,556 $3,460 $3,162 
202320222021
DTE Electric(In millions)
Asset retirement obligations at January 1$3,221 $2,932 $2,607 
Accretion185 172 155 
Liabilities incurred4 22 29 
Liabilities settled(81)(2)(27)
Revision in estimated cash flows(3)97 168 
Asset retirement obligations at December 31$3,326 $3,221 $2,932 
Approximately $2.7 billion of the Asset retirement obligations represent nuclear decommissioning liabilities that are funded through a surcharge to electric customers over the life of the Fermi 2 nuclear plant. The NRC has jurisdiction over the decommissioning of nuclear power plants and requires minimum decommissioning funding based upon a formula. The MPSC and FERC regulate the recovery of costs of decommissioning nuclear power plants and both require the use of external trust funds to finance the decommissioning of Fermi 2. Rates approved by the MPSC provide for the recovery of decommissioning costs of Fermi 2 and the disposal of low-level radioactive waste. DTE Electric believes the MPSC collections will be adequate to fund the estimated cost of decommissioning. The decommissioning assets, anticipated earnings thereon, and future revenues from decommissioning collections will be used to decommission Fermi 2. DTE Electric expects the liabilities to be reduced to zero at the conclusion of the decommissioning activities. If amounts remain in the trust funds for Fermi 2 following the completion of the decommissioning activities, those amounts will be disbursed based on rulings by the MPSC and FERC.
A portion of the funds recovered through the Fermi 2 decommissioning surcharge and deposited in external trust accounts is designated for the removal of non-radioactive assets and returning the site to greenfield. This removal and greenfielding is not considered a legal liability. Therefore, it is not included in the asset retirement obligation, but is reflected as the Nuclear decommissioning liability. The decommissioning of Fermi 1 is funded by DTE Electric. Contributions to the Fermi 1 trust are discretionary. For additional discussion of Nuclear decommissioning trust fund assets, see Note 12 to the Consolidated Financial Statements, "Fair Value."
v3.24.0.1
Regulatory Matters
 12 Months Ended
Dec. 31, 2023
Regulatory Assets and Liabilities Disclosure [Abstract]  
Regulatory Matters REGULATORY MATTERS
Regulation
DTE Electric and DTE Gas are subject to the regulatory jurisdiction of the MPSC, which issues orders pertaining to rates, recovery of certain costs, including the costs of generating facilities and regulatory assets, conditions of service, accounting, and operating-related matters. The MPSC has authorized a return on equity of 9.9% for both DTE Electric and DTE Gas, subject to changes from any pending or future rate case filings. DTE Electric is also regulated by the FERC with respect to financing authorization, wholesale electric market activities, certain affiliate transactions, the acquisition and disposition of certain generation and other facilities, and, in conjunction with the NERC, compliance with mandatory reliability standards. Regulation results in differences in the application of generally accepted accounting principles between regulated and non-regulated businesses.
The Registrants are unable to predict the outcome of any unresolved regulatory matters discussed herein. Resolution of these matters is dependent upon future MPSC and FERC orders and appeals, which may materially impact the Consolidated Financial Statements of the Registrants.
Regulatory Assets and Liabilities
DTE Electric and DTE Gas are required to record Regulatory assets and liabilities for certain transactions that would have been treated as revenue or expense in non-regulated businesses. Continued applicability of regulatory accounting treatment requires that rates be designed to recover specific costs of providing regulated services and be charged to and collected from customers. Future regulatory changes could result in the discontinuance of this accounting treatment for Regulatory assets and liabilities for some or all of the Registrants' businesses and may require the write-off of the portion of any Regulatory asset or liability that was no longer probable of recovery through regulated rates. Management believes that currently available facts support the continued use of Regulatory assets and liabilities and that all Regulatory assets and liabilities are recoverable or refundable in the current regulatory environment.
The following are balances and a brief description of the Registrants' Regulatory assets and liabilities at December 31:
DTE EnergyDTE Electric
2023202220232022
Assets(In millions)
Recoverable undepreciated costs on retiring plants$2,736 $594 $2,736 $594 
Recoverable pension and other postretirement costs
Pension1,421 1,362 1,045 997 
Other postretirement costs163 172 67 60 
Fermi 2 asset retirement obligation952 972 952 972 
Removal costs asset223 19 223 19 
Enhanced tree trimming program deferred costs157 90 157 90 
Recoverable Michigan income taxes133 148 110 121 
Energy Waste Reduction incentive90 88 72 71 
Recoverable income taxes related to AFUDC equity89 76 80 68 
Accrued PSCR/GCR revenue55 450 55 421 
Deferred environmental costs46 46 — — 
Unamortized loss on reacquired debt41 45 31 34 
Customer360 deferred costs38 42 38 42 
Advanced distribution management system costs18 14 18 14 
Deferred pension costs16 63 10 41 
Nuclear performance evaluation and review committee tracker6 26 6 26 
Other133 129 95 70 
6,317 4,336 5,695 3,640 
Less amount included in Current Assets(108)(450)(99)(421)
$6,209 $3,886 $5,596 $3,219 
Securitized regulatory assets$758 $206 $758 $206 
DTE EnergyDTE Electric
2023202220232022
Liabilities(In millions)
Refundable federal income taxes$1,823 $1,908 $1,463 $1,534 
Removal costs liability342 371 — — 
Negative other postretirement offset210 191 142 128 
Non-service pension and other postretirement costs199 154 84 73 
Accrued GCR refund21 — — — 
Renewable energy7 21 7 21 
Other72 62 63 55 
2,674 2,707 1,759 1,811 
Less amount included in Current Liabilities(71)(34)(49)(33)
$2,603 $2,673 $1,710 $1,778 
As noted below, certain Regulatory assets for which costs have been incurred have been included (or are expected to be included, for costs incurred subsequent to the most recently approved rate case) in DTE Electric's or DTE Gas' rate base, thereby providing a return on invested costs (except as noted). Certain other Regulatory assets are not included in rate base but accrue recoverable carrying charges until surcharges to collect the assets are billed. Certain Regulatory assets do not result from cash expenditures and therefore do not represent investments included in rate base or have offsetting liabilities that reduce rate base.
ASSETS
•Recoverable undepreciated costs on retiring plants — Current year balance reflects undepreciated costs at the Belle River and Monroe power plants that will be retired in future periods. These costs were approved for recovery as a result of DTE Electric's Integrated Resource Plan settlement agreement in 2023. Refer to the "Integrated Resource Plan" section below for additional details. The prior year balance reflects the undepreciated costs of the St. Clair and Trenton Channel power plants, which were approved for securitization and recovery by the MPSC and reclassified to 'Securitized regulatory assets' in 2023. Refer to the "2023 Securitization Filing" section below for additional information.
•Recoverable pension and other postretirement costs — Accounting standards for pension and other postretirement benefit costs require, among other things, the recognition in Other comprehensive income of the actuarial gains or losses and the prior service costs that arise during the period but are not immediately recognized as components of net periodic benefit costs. DTE Electric and DTE Gas record the impact of actuarial gains or losses and prior service costs as Regulatory assets since the traditional rate setting process allows for the recovery of pension and other postretirement costs. The asset will reverse as the deferred items are amortized and recognized as components of net periodic benefit costs. Refer to Note 20 to the Consolidated Financial Statements, "Retirement Benefits and Trusteed Assets," for additional information regarding the changes in pension and other postretirement costs for the period and the impact on Regulatory assets.(a)
•Fermi 2 asset retirement obligation — Obligation for Fermi 2 decommissioning costs. The asset captures the timing differences between expense recognition and current recovery in rates and will reverse over the remaining life of the related plant.(a)
•Removal costs asset — Receivable for the recovery of asset removal expenditures in excess of amounts collected from customers.(a)
•Enhanced tree trimming program deferred costs — The MPSC approved the deferral of costs for a tree trimming surge through 2025, aimed at reducing the number and duration of customer interruptions.
•Recoverable Michigan income taxes — The State of Michigan enacted a corporate income tax resulting in the establishment of state deferred tax liabilities for DTE Energy's utilities.  Offsetting Regulatory assets were also recorded as the impacts of the deferred tax liabilities will be reflected in rates as the related taxable temporary differences reverse and flow through current income tax expense.
•Energy Waste Reduction incentive — DTE Electric and DTE Gas operate MPSC approved energy waste reduction programs designed to reduce overall energy usage by their customers. The utilities are eligible to earn an incentive by exceeding statutory savings targets. The utilities have consistently exceeded the savings targets and recognize the incentive as a Regulatory asset in the period earned.(a)
•Recoverable income taxes related to AFUDC equity — Accounting standards for income taxes require recognition of a deferred tax liability for the equity component of AFUDC.  A Regulatory asset is required for the future increase in taxes payable related to the equity component of AFUDC that will be recovered from customers through future rates over the remaining life of the related plant.
•Accrued PSCR/GCR revenue — Receivable for the temporary under-recovery of and carrying costs on fuel and purchased power costs incurred by DTE Electric which are recoverable through the PSCR mechanism and temporary under-recovery of and carrying costs on gas costs incurred by DTE Gas which are recoverable through the GCR mechanism.
•Deferred environmental costs — The MPSC approved the deferral of investigation and remediation costs associated with DTE Gas' former MGP sites. Amortization of deferred costs is over a ten-year period beginning in the year after costs were incurred, with recovery (net of any insurance proceeds) through base rate filings.(a)
•Unamortized loss on reacquired debt — The unamortized discount, premium, and expense related to debt redeemed with a refinancing are deferred, amortized, and recovered over the life of the replacement issue.
•Customer360 deferred costs — The MPSC approved the deferral and amortization of certain costs associated with implementing Customer360, an integrated software application that enables improved interface among customer service, billing, meter reading, credit and collections, device management, account management, and retail access. Amortization of deferred costs over a 15-year amortization period began after the billing system was put into operation during the second quarter of 2017. The deferred costs are recorded as Regulatory Assets at DTE Electric and DTE Gas receives an intercompany charge for their proportionate share of amortization expense.
•Advanced distribution management system — Program comprised of new hardware and software designed to improve the monitoring and safe operation of the electrical system, including emergency response. The program includes various upgrades for which costs are being separately deferred and amortized over respective 15-year periods, with recovery through base filings.
•Deferred pension costs — Effective upon the DTE Gas rate case settlement approved in August 2020 and DTE Electric rate order in November 2022, net pension costs previously recognized in earnings are no longer included as an addition to authorized rates and are being deferred as Regulatory assets. The Regulatory assets will reverse to the extent net pension costs are negative in future years and the net deferred amounts will be reviewed in future rate cases. Refer to Note 20 to the Consolidated Financial Statements, "Retirement Benefits and Trusteed Assets," for additional information regarding net pension costs.
•Nuclear performance evaluation and review committee tracker — Deferral and amortization of certain costs associated with oversight and review of DTE Electric's nuclear power generation program, including safety and regulatory compliance, nuclear leadership, nuclear facilities, and operational and financial performance, pursuant to MPSC authorization. Deferrals are amortized over a five-year period with recovery through base rate filings.
•Securitized regulatory assets — Costs approved for securitization and recovery by the MPSC. For both periods presented, amounts include the undepreciated cost of the River Rouge power plant and tree trim surge costs. Securitization bond surcharges began in 2022 to recover the tree trimming costs over a period not to exceed 5 years and River Rouge costs over a period not to exceed 14 years. For the current year, amounts also include the undepreciated costs of the St. Clair and Trenton Channel power plants. Securitization bond surcharges began in 2023 to recover costs over a period not to exceed 15 years. Refer to the "2023 Securitization Filing" section below for additional information.
________________________________________________
(a)Regulatory assets not earning a return or accruing carrying charges.
LIABILITIES
•Refundable federal income taxes — In December 2017, the TCJA was enacted and reduced the corporate income tax rate, effective January 1, 2018. DTE Electric and DTE Gas remeasured deferred taxes, resulting in a reduction to deferred tax liabilities, to reflect the impact of the TCJA on the cumulative temporary differences expected to reverse after the effective date. Regulatory liabilities were also recorded to offset the impact of the deferred tax remeasurement reflected in rates.
•Removal costs liability — The amounts collected from customers to fund future asset removal activities in excess of removal costs incurred.
•Negative other postretirement offset — DTE Electric and DTE Gas' negative other postretirement costs have historically not been included as a reduction to their authorized rates; therefore, DTE Electric and DTE Gas have accrued a Regulatory liability to eliminate the impact on earnings of the negative other postretirement expense accrual. The Regulatory liabilities may reverse to the extent DTE Electric and DTE Gas' other postretirement expense is positive in future years. As a result of the MPSC order in December 2023, DTE Electric may continue to defer negative expense for 2023 and future periods; however, the Regulatory liability as of December 31, 2022 will begin to be amortized over a 7-year period. Refer to the "2023 Electric Rate Case Filing" section below for additional information.
•Non-service pension and other postretirement costs — Upon adoption of ASU 2017-07 on January 1, 2018, certain non-service pension and other postretirement cost activity is no longer credited to Property, plant, and equipment. Such costs may be recorded to Regulatory liabilities for ratemaking purposes and refunded through credits to amortization expense based on the composite depreciation rate for plant-in-service.
•Accrued GCR refund — Liability for the temporary over-recovery of and a return on gas costs primarily incurred by DTE Gas which are recoverable through the GCR mechanism.
•Renewable energy — Amounts collected in excess of renewable energy expenditures, including subscription revenue related to MIGreenPower, DTE Electric's voluntary renewable program providing customers the option to source their energy usage from renewables.
Ludington Accounting Application
During April 2022, DTE Electric and Consumers Energy Company (“Consumers”) filed a complaint against Toshiba America Energy Systems (“TAES”) and its parent corporation for defective and non-conforming work relating to the overhaul and upgrade of the Ludington Hydroelectric Pumped Storage Plant (“Ludington”). Refer to the Ludington Plant Contract Dispute section of Note 18 to the Consolidated Financial Statements, “Commitments and Contingencies,” for additional information regarding the complaint and ongoing legal proceedings.
DTE Electric and Consumers, joint owners of Ludington, believe that certain costs must be incurred in the near term for repairing and/or replacing defective work performed by TAES in order to ensure the continued safe and reliable operation of the plant. In November 2022, DTE Electric and Consumers filed an accounting application with the MPSC for authority to defer these costs as a regulatory asset. DTE Electric and Consumers requested the regulatory asset for their respective 49% and 51% shares of these costs, to be offset by any potential litigation proceeds. The parties also requested that appropriate recovery and ratemaking treatment be granted in a future rate case or other proceeding. In May 2023, the MPSC approved the accounting application as requested. Costs incurred and deferred as regulatory assets will be reviewed in future rate proceedings for cost recovery.
2023 Electric Rate Case Filing
DTE Electric filed a rate case with the MPSC on February 10, 2023 requesting an increase in base rates of $622 million based on a projected twelve-month period ending November 30, 2024, and an increase in return on equity from 9.9% to 10.25%. The requested increase in base rates was primarily due to increased investments in plant involving generation and the electric distribution system, as well as related increases to depreciation and property tax expenses, in order to support DTE Energy's goals to reduce carbon emissions and improve power reliability. The requested increase in base rates was also due to a projected sales decline from the level included in current rates and inflationary impacts on operating and interest costs.
On December 1, 2023, the MPSC issued an order approving an annual revenue increase of $368 million for services rendered on or after December 15, 2023 and a return on equity of 9.9%. The order also approved an Infrastructure Recovery Mechanism (IRM) surcharge to recover the cost of distribution investments incremental to those requested in base rates. The surcharge will be applied for a two-year period resulting in anticipated annual revenue increases of approximately $4 million and $25 million for the years ending December 31, 2024 and 2025, respectively.
Further, the MPSC order approved the continued deferral of negative other post-employment benefit (OPEB) expense as a regulatory liability for 2023 and future periods. As of December 31, 2022, DTE Electric had a Regulatory liability of $128 million for such OPEB deferrals, reflected as "Negative other postretirement offset" in the table of Regulatory assets and liabilities above. The MPSC order requires DTE Electric to amortize this balance over a 7-year period beginning December 15, 2023, which will reduce annual Operation and maintenance expense by approximately $18 million for each future period.
The MPSC order also disallowed $25 million of capital expenditures previously recorded, primarily related to various IT projects. The disallowance was included in Asset (gains) losses and impairments, net on the Consolidated Statements of Operations for the year ended December 31, 2023.
2023 Securitization Filing
On April 3, 2023, DTE Electric filed an application with the MPSC requesting a financing order to approve the securitization of $496 million of qualified costs related to the net book value of the St. Clair and Trenton Channel generation plants. The filing requested recovery of these qualifying costs from DTE Electric's customers.
The MPSC issued a financing order on June 22, 2023 authorizing DTE Electric to proceed with the issuance of Securitization bonds for qualified costs up to $602 million, increased for the inclusion of deferred income taxes. These costs include up to $594 million for the net book value of the St. Clair and Trenton Channel plants and up to $8 million for other qualified costs. The financing order further authorized customer charges for the timely recovery of debt service costs on the Securitization bonds and other ongoing qualified costs.
On November 1, 2023, DTE Electric closed on the issuance of Securitization bonds of $602 million, including two separate tranches of $301 million. Refer to Note 14 to the Consolidated Financial Statements, "Long-Term Debt," for additional information regarding the terms of the bonds and use of proceeds. Upon closing the transaction, DTE Electric recognized Securitized regulatory assets of $594 million, which were reclassified from existing Regulatory assets for the net book value of the St. Clair and Trenton Channel plants. Debt service costs for the first tranche will be recovered over a period not to exceed 10 years and costs for the second tranche will be recovered over a period not to exceed 15 years.
Integrated Resource Plan
In November 2022, DTE Electric filed an Integrated Resource Plan (IRP) with the MPSC, a comprehensive plan to meet the electricity needs of customers over the next 20 years. The IRP included details on planned coal plant retirements and replacement generation, including investments in renewables and battery storage, with a focus on providing increasingly clean, reliable, and affordable electricity to customers.
On July 12, 2023, DTE Energy announced that DTE Electric reached a settlement agreement with the various stakeholders involved in the IRP. The MPSC issued an order approving the settlement agreement on July 26, 2023. The agreement confirmed DTE Electric's plans to convert its Belle River facility from a coal-fired power plant to a natural gas peaking resource in 2025-2026, and to retire the Monroe power plant generation units 3 and 4 in 2028. DTE Electric also accelerated its planned retirement of Monroe generation units 1 and 2 from 2035 to 2032.
The settlement agreement approved the recovery of undepreciated plant costs that will be retired at Belle River and Monroe. As a result, approximately $2.7 billion of net Property, plant, and equipment was reclassified to a long-term regulatory asset during the third quarter 2023. Future capital expenditures will also be recovered, and the regulatory asset will be remeasured each reporting period for changes in expenditures, retirements, and depreciation.
DTE Electric will securitize $1.05 billion of the plant costs, including approximately $200 million for the estimated net book value of Belle River coal handling assets to be retired in 2025-2026. The remaining $845 million reflects the net book value of Monroe assets to be securitized upon the full retirement of the plant in 2032. Securitization will include the issuance of bonds for the respective plant costs and customer charges for the timely recovery of debt service costs. DTE Electric plans to reclassify amounts to Securitized regulatory assets upon completing the respective securitization financings. Terms of the securitization bonds and recovery periods for the debt service costs will also be determined at that time.
For the remaining net book value of Monroe plant assets, approximately $1.6 billion will be recovered through a regulatory asset with a return on equity of 9.0% and will be amortized over a 15-year period. Amortization will begin upon the issuance of an order in DTE Electric's next rate case. Until then, amounts will continue to be depreciated.
Pursuant to the IRP settlement agreement, DTE Electric has also committed to donate a total of $38 million, including $2 million each year from 2024 to 2027 to organizations providing various energy support to low-income customers. The remaining $30 million of donations will be made to organizations providing customers with bill assistance. The $30 million of donations may be made in varying annual amounts over the 15-year period of the Monroe regulatory asset discussed above, with a minimum amount of $1 million each year beginning in 2028. Organizations receiving donations will be determined at a later date in consultation with Michigan's Attorney General and MPSC staff, among others. Donations will not be recovered in rates and will be recorded as Other Expenses on the Consolidated Statements of Operations in future periods as the donations occur.
2024 Gas Rate Case Filing
DTE Gas filed a rate case with the MPSC on January 8, 2024 requesting an increase in base rates of $266 million based on a projected twelve-month period ending September 30, 2025, and an increase in return on equity from 9.9% to 10.25%. The request reflects a net increase to customer rates of only $160 million, as an existing IRM surcharge of $106 million would be rolled into the new base rates. The requested increase is primarily due to increased investments in plant related to system reliability and pipeline safety and inflationary impacts on operating costs, partially offset by higher sales. A final MPSC order in this case is expected in November 2024.
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Income Taxes
 12 Months Ended
Dec. 31, 2023
Income Tax Disclosure [Abstract]  
Income Taxes INCOME TAXES
Income Tax Summary
DTE Energy files a consolidated federal income tax return. DTE Electric is a part of the consolidated federal income tax return of DTE Energy. DTE Energy and its subsidiaries file consolidated and/or separate company income tax returns in various states and localities, including a consolidated return in the State of Michigan. DTE Electric is part of the Michigan consolidated income tax return of DTE Energy. The federal, state and local income tax expense for DTE Electric is determined on an individual company basis with no allocation of tax expenses or benefits from other affiliates of DTE Energy. DTE Electric had income tax receivables with DTE Energy of $7 million at December 31, 2023, primarily related to federal taxes, and $1 million at December 31, 2022, primarily related to state taxes. Income tax receivables with DTE Energy are included in Accounts Receivable - Affiliates on the DTE Electric Consolidated Statements of Financial Position. .
The Registrants' total Income Tax Expense varied from the statutory federal income tax rate for the following reasons:
202320222021
DTE Energy(In millions)
Income Before Income Taxes$1,566 $1,112 $656 
Income tax expense at 21% statutory rate$329 $234 $138 
Production tax credits(91)(91)(138)
TCJA regulatory liability amortization(63)(155)(103)
Investment tax credits(44)(1)(3)
Enactment of state income tax legislation, net of federal benefit(1)— 8 
State deferred tax remeasurement due to separation of DT Midstream, net of federal benefit— — (85)
Valuation allowance on charitable contribution carryforwards— 9 18 
State and local income taxes, excluding items above, net of federal benefit59 42 30 
Other, net(20)(9)5 
Income Tax Expense (Benefit)$169 $29 $(130)
Effective income tax rate10.8 %2.6 %(19.9)%
202320222021
DTE Electric(In millions)
Income Before Income Taxes$850 $981 $970 
Income tax expense at 21% statutory rate$179 $206 $204 
Production tax credits(79)(83)(70)
TCJA regulatory liability amortization(53)(145)(73)
State and local income taxes, excluding items above, net of federal benefit45 56 54 
Other, net(14)(8)(11)
Income Tax Expense$78 $26 $104 
Effective income tax rate9.2 %2.7 %10.7 %
Components of the Registrants' Income Tax Expense were as follows:
202320222021
DTE Energy(In millions)
Current income tax benefit
Federal$(10)$(13)$(33)
State and other income tax(2)(2)(12)
Total current income taxes(12)(15)(45)
Deferred income tax expense (benefit)
Federal103 (13)(42)
State and other income tax78 57 (43)
Total deferred income taxes181 44 (85)
$169 $29 $(130)
202320222021
DTE Electric(In millions)
Current income tax expense (benefit)
Federal$1 $1 $(11)
State and other income tax(5)— (7)
Total current income taxes(4)1 (18)
Deferred income tax expense (benefit)
Federal19 (46)47 
State and other income tax63 71 75 
Total deferred income taxes82 25 122 
$78 $26 $104 
Deferred tax assets and liabilities are recognized for the estimated future tax effect of temporary differences between the tax basis of assets or liabilities and the reported amounts in the Registrants' Consolidated Financial Statements.
The Registrants' deferred tax assets (liabilities) were comprised of the following at December 31:
DTE EnergyDTE Electric
2023202220232022
(In millions)
Property, plant, and equipment$(3,423)$(3,897)$(2,693)$(3,188)
Regulatory assets and liabilities(1,158)(493)(1,314)(589)
Tax credit carryforwards1,519 1,378 572 487 
Pension and benefits77 111 69 103 
Federal net operating loss carryforward202 266 71 58 
State and local net operating loss carryforwards76 97 49 38 
Investments in equity method investees(33)65 — — 
Other130 137 137 145 
(2,610)(2,336)(3,109)(2,946)
Less: Valuation allowance(39)(58)— — 
Long-term deferred income tax liabilities$(2,649)$(2,394)$(3,109)$(2,946)
Deferred income tax assets$2,415 $2,317 $1,202 $1,081 
Deferred income tax liabilities(5,064)(4,711)(4,311)(4,027)
$(2,649)$(2,394)$(3,109)$(2,946)
Tax credit carryforwards for DTE Energy include $1.5 billion of general business credits that expire from 2032 through 2043. No valuation allowance is required for the tax credit carryforwards deferred tax asset.
DTE Energy has a pre-tax federal net operating loss carryforward of $964 million as of December 31, 2023 which can be carried forward indefinitely. No valuation allowance is required for the federal net operating loss deferred tax asset.
DTE Energy has state and local deferred tax assets related to net operating loss carryforwards of $76 million and $97 million at December 31, 2023 and 2022, respectively. Most of the state and local net operating loss carryforwards expire from 2024 through 2042 with the remainder being carried forward indefinitely.
DTE Energy has recorded valuation allowances of $39 million and $58 million at December 31, 2023 and 2022, respectively, including $19 million and $31 million for the respective periods related to the state net operating loss carryforwards noted above. The remaining valuation allowances are related to charitable contribution carryforwards.
In assessing the realizability of deferred tax assets, DTE Energy considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible.
Tax credit carryforwards for DTE Electric include $572 million of general business credits that expire from 2036 through 2043. No valuation allowance is required for the tax credit carryforwards deferred tax asset.
DTE Electric has a pre-tax federal net operating loss carryforward of $338 million as of December 31, 2023 which can be carried forward indefinitely. No valuation allowance is required for the federal net operating loss deferred tax asset.
DTE Electric has $49 million and $38 million in state and local deferred tax assets related to net operating loss carryforwards at December 31, 2023 and 2022, respectively, which will expire from 2030 through 2042. No valuation allowance is required for the state and local net operating loss deferred tax assets.
The above tables exclude unamortized investment tax credits that are shown separately on the Registrants' Consolidated Statements of Financial Position. DTE Energy's policy election is to follow the flow-through method of accounting for investment tax credits earned from its non-utility businesses and the deferral method of accounting for its regulated utilities due to different economic profiles of the various entities. The flow-through method used by the non-utility businesses recognizes investment tax credits in earnings when the related assets are placed in service. The investment tax credits generated by the regulated utilities are deferred and amortized to earnings over the average life of the related property.
Uncertain Tax Positions
A reconciliation of the beginning and ending amount of unrecognized tax benefits for the Registrants is as follows:
202320222021
DTE Energy(In millions)
Balance at January 1$13 $10 $10 
Additions for tax positions of prior years2 5 — 
Reductions for tax positions of prior years(5)(2)— 
Settlements(10)— — 
Balance at December 31$— $13 $10 
202320222021
DTE Electric(In millions)
Balance at January 1$13 $13 $13 
Settlements(13)— — 
Balance at December 31$— $13 $13 
During 2023, DTE Energy's unrecognized tax benefits decreased by $10 million as a result of an audit settlement related to state exposures and $5 million due to recognition of a federal tax claim. For DTE Electric, unrecognized tax benefits decreased by $13 million due to the audit settlement related to state exposures. Recognition of these tax benefits, net of any federal benefit, resulted in a reduction of $13 million and $10 million to Income Tax Expense on the respective DTE Energy and DTE Electric Consolidated Statements of Operations for the year ended December 31, 2023.
The Registrants recognize interest and penalties pertaining to income taxes in Interest expense and Other expenses, respectively, on the Consolidated Statements of Operations. DTE Energy recognized a nominal amount of interest expense related to income taxes in 2023, 2022, and 2021. DTE Electric recognized a nominal amount of interest expense in 2023 and $1 million in both 2022 and 2021.
Accrued interest pertaining to income taxes at December 31, 2022 was $5 million and $8 million for DTE Energy and DTE Electric, respectively. As a result of the state tax audit settlement noted above, there is no remaining accrued interest pertaining to income taxes as of December 31, 2023. DTE Energy and DTE Electric have not accrued any penalties pertaining to income taxes.
In 2023, DTE Energy, including DTE Electric, settled a federal tax audit for the 2021 tax year. DTE Energy's federal income tax returns for 2022 and subsequent years remain subject to examination by the IRS. DTE Energy's Michigan Corporate Income Tax returns for the year 2019 and subsequent years remain subject to examination by the State of Michigan. DTE Energy also files tax returns in numerous state and local jurisdictions with varying statutes of limitation.
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Earnings Per Share
 12 Months Ended
Dec. 31, 2023
Earnings Per Share [Abstract]  
Earnings Per Share EARNINGS PER SHARE
Basic earnings per share is calculated by dividing net income, adjusted for income allocated to participating securities, by the weighted average number of common shares outstanding during the period. Diluted earnings per share reflect the dilution that would occur if any potentially dilutive instruments were exercised or converted into common shares. DTE Energy's participating securities are restricted shares under the stock incentive program that contain rights to receive non-forfeitable dividends. Equity units and performance shares do not receive cash dividends; as such, these awards are not considered participating securities. For additional information regarding performance shares, see Note 21 to the Consolidated Financial Statements, "Stock-Based Compensation."
The following is a reconciliation of DTE Energy's basic and diluted income per share calculation for the years ended December 31:
202320222021
(In millions, except per share amounts)
Basic Earnings per Share
Net Income Attributable to DTE Energy Company — continuing operations$1,397 $1,083 $796 
Less: Allocation of earnings to net restricted stock awards3 3 2 
$1,394 $1,080 $794 
Net Income Attributable to DTE Energy Company — discontinued operations— — 111 
Net income available to common shareholders — basic$1,394 $1,080 $905 
Average number of common shares outstanding — basic206 195 193 
Income from continuing operations$6.77 $5.53 $4.11 
Income from discontinued operations— — 0.57 
Basic Earnings per Common Share$6.77 $5.53 $4.68 
Diluted Earnings per Share
Net Income Attributable to DTE Energy Company — continuing operations$1,397 $1,083 $796 
Less: Allocation of earnings to net restricted stock awards3 3 2 
$1,394 $1,080 $794 
Net Income Attributable to DTE Energy Company — discontinued operations— — 111 
Net income available to common shareholders — diluted$1,394 $1,080 $905 
Average number of common shares outstanding — basic206 195 193 
    Average performance share awards— 1 1 
Average number of common shares outstanding — diluted206 196 194 
Income from continuing operations$6.76 $5.52 $4.10 
Income from discontinued operations— — 0.57 
Diluted Earnings per Common Share(a)
$6.76 $5.52 $4.67 
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(a)Equity units excluded from the calculation of diluted EPS were approximately 11.5 million for the year ended December 31, 2021, as the dilutive stock price threshold was not met. These equity units were settled in November 2022 resulting in the issuance of common stock.
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Fair Value
 12 Months Ended
Dec. 31, 2023
Fair Value Disclosures [Abstract]  
Fair Value FAIR VALUE
Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date in a principal or most advantageous market. Fair value is a market-based measurement that is determined based on inputs, which refer broadly to assumptions that market participants use in pricing assets or liabilities. These inputs can be readily observable, market corroborated, or generally unobservable inputs. The Registrants make certain assumptions they believe that market participants would use in pricing assets or liabilities, including assumptions about risk, and the risks inherent in the inputs to valuation techniques. Credit risk of the Registrants and their counterparties is incorporated in the valuation of assets and liabilities through the use of credit reserves, the impact of which was immaterial at December 31, 2023 and 2022. The Registrants believe they use valuation techniques that maximize the use of observable market-based inputs and minimize the use of unobservable inputs.
A fair value hierarchy has been established that prioritizes the inputs to valuation techniques used to measure fair value in three broad levels. The fair value hierarchy gives the highest priority to quoted prices (unadjusted) in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). In some cases, the inputs used to measure fair value might fall in different levels of the fair value hierarchy. All assets and liabilities are required to be classified in their entirety based on the lowest level of input that is significant to the fair value measurement in its entirety. Assessing the significance of a particular input may require judgment considering factors specific to the asset or liability and may affect the valuation of the asset or liability and its placement within the fair value hierarchy. The Registrants classify fair value balances based on the fair value hierarchy defined as follows:
•Level 1 — Consists of unadjusted quoted prices in active markets for identical assets or liabilities that the Registrants have the ability to access as of the reporting date.
•Level 2 — Consists of inputs other than quoted prices included within Level 1 that are directly observable for the asset or liability or indirectly observable through corroboration with observable market data.
•Level 3 — Consists of unobservable inputs for assets or liabilities whose fair value is estimated based on internally developed models or methodologies using inputs that are generally less readily observable and supported by little, if any, market activity at the measurement date. Unobservable inputs are developed based on the best available information and subject to cost-benefit constraints.
The following table presents assets and liabilities for DTE Energy measured and recorded at fair value on a recurring basis:
December 31, 2023December 31, 2022
Level 1Level
 2		Level 3
Other
(a)
Netting
(b)
Net BalanceLevel 1Level
 2		Level 3
Other
(a)
Netting
(b)
Net Balance
(In millions)
Assets
Cash equivalents(c)
$13 $— $— $— $— $13 $10 $— $— $— $— $10 
Nuclear decommissioning trusts
Equity securities776 — — 145 — 921 701 — — 138 — 839 
Fixed income securities127 371 — 92 — 590 115 359 — 89 — 563 
Private equity and other— — — 312 — 312 — — — 262 — 262 
Hedge funds and similar investments119 65 — — — 184 78 41 — — — 119 
Cash equivalents34 — — — — 34 42 — — — — 42 
Other investments(d)
Equity securities58 — — — — 58 56 — — — — 56 
Fixed income securities7 — — — — 7 7 — — — — 7 
Cash equivalents37 — — — — 37 72 — — — — 72 
Derivative assets
Commodity contracts(e)
Natural gas241 217 179 — (416)221 426 183 135 — (649)95 
Electricity— 258 163 — (243)178 — 720 243 — (643)320 
Environmental & Other— 131 8 — (132)7 — 201 12 — (196)17 
Other contracts— — — — — — — 2 — — (1)1 
Total derivative assets241 606 350 — (791)406 426 1,106 390 — (1,489)433 
Total$1,412 $1,042 $350 $549 $(791)$2,562 $1,507 $1,506 $390 $489 $(1,489)$2,403 
Liabilities
Derivative liabilities
Commodity contracts(e)
Natural gas$(291)$(167)$(157)$— $429 $(186)$(297)$(331)$(390)$— $645 $(373)
Electricity— (272)(116)— 297 (91)— (659)(276)— 665 (270)
Environmental & Other— (148)(2)— 137 (13)— (213)(1)— 201 (13)
Other contracts— (19)— — — (19)— (2)— — 1 (1)
Total$(291)$(606)$(275)$— $863 $(309)$(297)$(1,205)$(667)$— $1,512 $(657)
Net Assets (Liabilities) at end of period$1,121 $436 $75 $549 $72 $2,253 $1,210 $301 $(277)$489 $23 $1,746 
Assets
Current$215 $461 $247 $— $(613)$310 $360 $881 $286 $— $(1,189)$338 
Noncurrent1,197 581 103 549 (178)2,252 1,147 625 104 489 (300)2,065 
Total Assets$1,412 $1,042 $350 $549 $(791)$2,562 $1,507 $1,506 $390 $489 $(1,489)$2,403 
Liabilities
Current$(240)$(462)$(145)$— $670 $(177)$(273)$(876)$(386)$— $1,193 $(342)
Noncurrent(51)(144)(130)— 193 (132)(24)(329)(281)— 319 (315)
Total Liabilities$(291)$(606)$(275)$— $863 $(309)$(297)$(1,205)$(667)$— $1,512 $(657)
Net Assets (Liabilities) at end of period$1,121 $436 $75 $549 $72 $2,253 $1,210 $301 $(277)$489 $23 $1,746 
_______________________________________
(a)Amounts represent assets valued at NAV as a practical expedient for fair value.
(b)Amounts represent the impact of master netting agreements that allow DTE Energy to net gain and loss positions and cash collateral held or placed with the same counterparties.
(c)Amounts include $11 million and $10 million of cash equivalents recorded in Restricted cash on DTE Energy's Consolidated Statements of Financial Position at December 31, 2023 and December 31, 2022, respectively. All other amounts are included in Cash and cash equivalents on DTE Energy's Consolidated Statements of Financial Position.
(d)Excludes cash surrender value of life insurance investments and certain securities classified as held-to-maturity that are recorded at amortized cost and not material to the consolidated financial statements.
(e)For contracts with a clearing agent, DTE Energy nets all activity across commodities. This can result in some individual commodities having a contra balance.
The following table presents assets for DTE Electric measured and recorded at fair value on a recurring basis as of:
December 31, 2023December 31, 2022
Level 1Level 2Level 3
Other(a)
Net Balance Level 1Level 2Level 3
Other(a)
Net Balance
(In millions)
Assets
Cash equivalents(b)
$11 $— $— $— $11 $9 $— $— $— $9 
Nuclear decommissioning trusts
Equity securities776 — — 145 921 701 — — 138 839 
Fixed income securities127 371 — 92 590 115 359 — 89 563 
Private equity and other— — — 312 312 — — — 262 262 
Hedge funds and similar investments119 65 — — 184 78 41 — — 119 
Cash equivalents34 — — — 34 42 — — — 42 
Other investments
Equity securities21 — — — 21 16 — — — 16 
Cash equivalents11 — — — 11 11 — — — 11 
Derivative assets — FTRs— — 7 — 7 — — 11 — 11 
Total$1,099 $436 $7 $549 $2,091 $972 $400 $11 $489 $1,872 
Assets
Current$11 $— $7 $— $18 $9 $— $11 $— $20 
Noncurrent1,088 436 — 549 2,073 963 400 — 489 1,852 
Total Assets$1,099 $436 $7 $549 $2,091 $972 $400 $11 $489 $1,872 
_______________________________________
(a)Amounts represent assets valued at NAV as a practical expedient for fair value.
(b)Cash equivalents of $11 million and $9 million are included in Restricted cash on DTE Electric's Consolidated Statements of Financial Position at December 31, 2023 and December 31, 2022, respectively.
Cash Equivalents
Cash equivalents include investments with maturities of three months or less when purchased. The cash equivalents shown in the fair value table are comprised of short-term investments and money market funds.
Nuclear Decommissioning Trusts and Other Investments
The nuclear decommissioning trusts and other investments hold debt and equity securities directly and indirectly through commingled funds. Exchange-traded debt and equity securities held directly, as well as publicly traded commingled funds, are valued using quoted market prices in actively traded markets. Non-exchange traded fixed income securities are valued based upon quotations available from brokers or pricing services.
Non-publicly traded commingled funds holding exchange-traded equity or debt securities are valued based on stated NAVs. There are no significant restrictions for these funds and investments may be redeemed with 7 to 65 days notice depending on the fund. There is no intention to sell the investment in these commingled funds.
Private equity and other assets include a diversified group of funds that are classified as NAV assets. These funds primarily invest in limited partnerships, including private equity, private real estate and private credit. Distributions are received through the liquidation of the underlying fund assets over the life of the funds. There are generally no redemption rights. The limited partner must hold the fund for its life or find a third-party buyer, which may need to be approved by the general partner. The funds are established with varied contractual durations generally in the range of 7 years to 12 years. The fund life can often be extended by several years by the general partner, and further extended with the approval of the limited partners. Unfunded commitments related to these investments totaled $157 million and $177 million as of December 31, 2023 and 2022, respectively.
Hedge funds and similar investments utilize a diversified group of strategies that attempt to capture uncorrelated sources of return. These investments include publicly traded mutual funds that are valued using quoted prices in actively traded markets, as well as insurance-linked and asset-backed securities and that are valued using quotations from broker or pricing services.
For pricing the nuclear decommissioning trusts and other investments, a primary price source is identified by asset type, class, or issue for each security. The trustee monitors prices supplied by pricing services and may use a supplemental price source or change the primary source of a given security if the trustee determines that another price source is considered preferable. The Registrants have obtained an understanding of how these prices are derived, including the nature and observability of the inputs used in deriving such prices.
Derivative Assets and Liabilities
Derivative assets and liabilities are comprised of physical and financial derivative contracts, including futures, forwards, options, and swaps that are both exchange-traded and over-the-counter traded contracts. Various inputs are used to value derivatives depending on the type of contract and availability of market data. Exchange-traded derivative contracts are valued using quoted prices in active markets. The Registrants consider the following criteria in determining whether a market is considered active: frequency in which pricing information is updated, variability in pricing between sources or over time, and the availability of public information. Other derivative contracts are valued based upon a variety of inputs including commodity market prices, broker quotes, interest rates, credit ratings, default rates, market-based seasonality, and basis differential factors. The Registrants monitor the prices that are supplied by brokers and pricing services and may use a supplemental price source or change the primary price source of an index if prices become unavailable or another price source is determined to be more representative of fair value. The Registrants have obtained an understanding of how these prices are derived. Additionally, the Registrants selectively corroborate the fair value of their transactions by comparison of market-based price sources. Mathematical valuation models are used for derivatives for which external market data is not readily observable, such as contracts which extend beyond the actively traded reporting period. The Registrants have established a Risk Management Committee whose responsibilities include directly or indirectly ensuring all valuation methods are applied in accordance with predefined policies. The development and maintenance of the Registrants' forward price curves has been assigned to DTE Energy's Risk Management Department, which is separate and distinct from the trading functions within DTE Energy.
The following table presents the fair value reconciliation of Level 3 assets and liabilities measured at fair value on a recurring basis for DTE Energy:
Year Ended December 31, 2023Year Ended December 31, 2022
Natural GasElectricityOtherTotalNatural GasElectricityOtherTotal
(In millions)
Net Assets (Liabilities) as of January 1$(255)$(33)$11 $(277)$(179)$(45)$9 $(215)
Transfers from Level 3 into Level 217 — — 17 5 1 — 6 
Total gains (losses)
Included in earnings(a)
182 198 (1)379 (410)97 2 (311)
Recorded in Regulatory liabilities— — 9 9 — — 21 21 
Purchases, issuances, and settlements:
Settlements78 (118)(13)(53)329 (86)(21)222 
Net Assets (Liabilities) as of December 31$22 $47 $6 $75 $(255)$(33)$11 $(277)
Total gains (losses) included in Net Income attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31(a)
$85 $151 $(122)$114 $(215)$50 $(111)$(276)
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31$— $— $7 $7 $— $— $11 $11 
_______________________________________
(a)Amounts are reflected in Operating Revenues — Non-utility operations and Fuel, purchased power, gas, and other — non-utility in DTE Energy's Consolidated Statements of Operations.
The following table presents the fair value reconciliation of Level 3 assets and liabilities measured at fair value on a recurring basis for DTE Electric:
Year Ended December 31,
20232022
(In millions)
Net Assets as of January 1$11 $9 
Total gains recorded in Regulatory liabilities9 21 
Purchases, issuances, and settlements:
Settlements(13)(19)
Net Assets as of December 31$7 $11 
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31$7 $11 
Derivatives are transferred between levels primarily due to changes in the source data used to construct price curves as a result of changes in market liquidity. Transfers in and transfers out are reflected as if they had occurred at the beginning of the period. There were no transfers from or into Level 3 for DTE Electric during the years ended December 31, 2023 and 2022.
The following tables present the unobservable inputs related to DTE Energy's Level 3 assets and liabilities:
December 31, 2023
Commodity ContractsDerivative AssetsDerivative LiabilitiesValuation TechniquesUnobservable InputRangeWeighted Average
(In millions)
Natural Gas$179 $(157)Discounted Cash FlowForward basis price (per MMBtu)$(1.57)—$6.27 /MMBtu$(0.08)/MMBtu
Electricity$163 $(116)Discounted Cash FlowForward basis price (per MWh)$(18.49)—$15.47 /MWh$(3.99)/MWh
December 31, 2022
Commodity ContractsDerivative AssetsDerivative LiabilitiesValuation TechniquesUnobservable InputRangeWeighted Average
(In millions)
Natural Gas$135 $(390)Discounted Cash FlowForward basis price (per MMBtu)$(1.91)—$39.94 /MMBtu$0.18 /MMBtu
Electricity$243 $(276)Discounted Cash FlowForward basis price (per MWh)$(29.41)—$15.00 /MWh$(3.04)/MWh
The unobservable inputs used in the fair value measurement of the electricity and natural gas commodity types consist of inputs that are less observable due in part to lack of available broker quotes, supported by little, if any, market activity at the measurement date or are based on internally developed models. Certain basis prices (i.e., the difference in pricing between two locations) included in the valuation of natural gas and electricity contracts were deemed unobservable. The weighted average price for unobservable inputs was calculated using the average of forward price curves for natural gas and electricity and the absolute value of monthly volumes.
The inputs listed above would have had a direct impact on the fair values of the above security types if they were adjusted. A significant increase (decrease) in the basis price would have resulted in a higher (lower) fair value for long positions, with offsetting impacts to short positions.
Fair Value of Financial Instruments
The following table presents the carrying amount and fair value of financial instruments for DTE Energy:
December 31, 2023December 31, 2022
CarryingFair ValueCarryingFair Value
AmountLevel 1Level 2Level 3AmountLevel 1Level 2Level 3
(In millions)
Notes receivable(a), excluding lessor finance leases
$175 $— $— $181 $80 $— $— $82 
Short-term borrowings$1,283 $— $1,283 $— $1,162 $— $1,162 $— 
Notes payable(b)
$34 $— $— $34 $18 $— $— $18 
Long-term debt(c)
$19,546 $807 $16,178 $1,202 $17,978 $710 $14,084 $1,199 
_______________________________________
(a)Current portion included in Current Assets — Other on DTE Energy's Consolidated Statements of Financial Position.
(b)Included in Current Liabilities — Other and Other Liabilities — Other on DTE Energy's Consolidated Statements of Financial Position.
(c)Includes debt due within one year and excludes finance lease obligations. Carrying value also includes unamortized debt discounts and issuance costs.
The following table presents the carrying amount and fair value of financial instruments for DTE Electric:
December 31, 2023December 31, 2022
CarryingFair ValueCarryingFair Value
AmountLevel 1Level 2Level 3AmountLevel 1Level 2Level 3
(In millions)
Notes receivable — Other(a)
$19 $— $— $19 $17 $— $— $17 
Short-term borrowings — affiliates$— $— $— $— $27 $— $— $27 
Short-term borrowings — other$385 $— $385 $— $568 $— $568 $— 
Notes payable(b)
$33 $— $— $33 $17 $— $— $17 
Long-term debt(c)
$11,043 $— $9,999 $126 $9,696 $— $8,289 $128 
_______________________________________
(a)Included in Current Assets — Other and Other Assets — Other on DTE Electric's Consolidated Statements of Financial Position.
(b)Included in Current Liabilities — Other and Other Liabilities — Other on DTE Electric's Consolidated Statements of Financial Position.
(c)Includes debt due within one year and excludes finance lease obligations. Carrying value also includes unamortized debt discounts and issuance costs.
For further fair value information on financial and derivative instruments, see Note 13 to the Consolidated Financial Statements, "Financial and Other Derivative Instruments."
Nuclear Decommissioning Trust Funds
DTE Electric has a legal obligation to decommission its nuclear power plants following the expiration of its operating licenses. This obligation is reflected as an Asset retirement obligation on DTE Electric's Consolidated Statements of Financial Position. Rates approved by the MPSC provide for the recovery of decommissioning costs of Fermi 2 and the disposal of low-level radioactive waste. See Note 8 to the Consolidated Financial Statements, "Asset Retirement Obligations."
The following table summarizes DTE Electric's fair value of the nuclear decommissioning trust fund assets:
December 31,
20232022
(In millions)
Fermi 2$2,026 $1,807 
Fermi 13 3 
Low-level radioactive waste12 15 
$2,041 $1,825 
The costs of securities sold are determined on the basis of specific identification. The following table sets forth DTE Electric's gains and losses and proceeds from the sale of securities by the nuclear decommissioning trust funds:
Year Ended December 31,
202320222021
(In millions)
Realized gains$36 $71 $95 
Realized losses$(42)$(53)$(12)
Proceeds from sale of securities$681 $879 $1,047 
Realized gains and losses from the sale of securities and unrealized gains and losses incurred by the Fermi 2 trust are recorded to Regulatory assets and the Nuclear decommissioning liability. Realized gains and losses from the sale of securities and unrealized gains and losses on the low-level radioactive waste funds are recorded to the Nuclear decommissioning liability.
The following table sets forth DTE Electric's fair value and unrealized gains and losses for the nuclear decommissioning trust funds:
December 31, 2023December 31, 2022
Fair
Value		Unrealized
Gains		Unrealized LossesFair
Value		Unrealized
Gains		Unrealized Losses
(In millions)
Equity securities$921 $459 $(11)$839 $342 $(23)
Fixed income securities590 8 (30)563 1 (56)
Private equity and other312 74 (8)262 63 (5)
Hedge funds and similar investments184 4 (9)119 — (18)
Cash equivalents34 — — 42 — — 
$2,041 $545 $(58)$1,825 $406 $(102)
The following table summarizes the fair value of the fixed income securities held in nuclear decommissioning trust funds by contractual maturity:
December 31, 2023
(In millions)
Due within one year$12 
Due after one through five years118 
Due after five through ten years95 
Due after ten years273 
$498 
Fixed income securities held in nuclear decommissioning trust funds include $92 million of non-publicly traded commingled funds that do not have a contractual maturity date.
Other Securities
At December 31, 2023 and 2022, DTE Energy's securities included in Other investments on the Consolidated Statements of Financial Position were comprised primarily of investments within DTE Energy's rabbi trust. The rabbi trust is comprised primarily of trading securities recorded at fair value, as well as debt securities classified as held-to-maturity and recorded at amortized cost. The trust was established to fund certain non-qualified pension benefits, and therefore changes in market value of the trading securities and interest on the held-to-maturity securities are recognized in earnings. Gains and losses are allocated from DTE Energy to DTE Electric and are included in Other Income or Other Expense, respectively, in the Registrants' Consolidated Statements of Operations. Gains (losses) related to the trading securities were immaterial for the years ended December 31, 2023, 2022, and 2021, respectively.
v3.24.0.1
Financial and Other Derivative Instruments
 12 Months Ended
Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Financial and Other Derivative Instruments FINANCIAL AND OTHER DERIVATIVE INSTRUMENTS
The Registrants recognize all derivatives at their fair value as Derivative assets or liabilities on their respective Consolidated Statements of Financial Position unless they qualify for certain scope exceptions, including the normal purchases and normal sales exception. Further, derivatives that qualify and are designated for hedge accounting are classified as either hedges of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (cash flow hedge); or as hedges of the fair value of a recognized asset or liability or of an unrecognized firm commitment (fair value hedge). For cash flow hedges, the derivative gain or loss is deferred in Accumulated other comprehensive income (loss) and later reclassified into earnings when the underlying transaction occurs. For fair value hedges, changes in fair values for the derivative and hedged item are recognized in earnings each period. For derivatives that do not qualify or are not designated for hedge accounting, changes in fair value are recognized in earnings each period.
The Registrants' primary market risk exposure is associated with commodity prices, credit, and interest rates. The Registrants have risk management policies to monitor and manage market risks. The Registrants use derivative instruments to manage some of the exposure. DTE Energy uses derivative instruments for trading purposes in its Energy Trading segment. Contracts classified as derivative instruments include electricity, natural gas, oil, certain environmental contracts, forwards, futures, options, swaps, and foreign currency exchange contracts. Items not classified as derivatives include natural gas and environmental inventory, pipeline transportation contracts, some environmental contracts, and natural gas storage assets.
DTE Electric — DTE Electric generates, purchases, distributes, and sells electricity. DTE Electric uses forward contracts to manage changes in the price of electricity and fuel. Substantially all of these contracts meet the normal purchases and normal sales exception and are therefore accounted for under the accrual method. Other derivative contracts are MTM and recoverable through the PSCR mechanism when settled. This results in the deferral of unrealized gains and losses as Regulatory assets or liabilities until realized.
DTE Gas — DTE Gas purchases, stores, transports, distributes, and sells natural gas, and buys and sells transportation and storage capacity. DTE Gas has fixed-priced contracts for portions of its expected natural gas supply requirements through March 2026. Substantially all of these contracts meet the normal purchases and normal sales exception and are therefore accounted for under the accrual method. Forward transportation and storage contracts are generally not derivatives and are therefore accounted for under the accrual method.
DTE Vantage — This segment manages and operates renewable gas recovery projects, power generation assets, and other customer specific energy solutions. Long-term contracts and hedging instruments are used in the marketing and management of the segment assets. These contracts and hedging instruments are generally not derivatives and are therefore accounted for under the accrual method.
Energy Trading — Commodity Price Risk — Energy Trading markets and trades electricity, natural gas physical products, and energy financial instruments, and provides energy and asset management services utilizing energy commodity derivative instruments. Forwards, futures, options, and swap agreements are used to manage exposure to the risk of market price and volume fluctuations in its operations. These derivatives are accounted for by recording changes in fair value to earnings unless hedge accounting criteria are met.
Energy Trading — Foreign Currency Exchange Risk — Energy Trading has foreign currency exchange forward contracts to economically hedge fixed Canadian dollar commitments existing under natural gas and power purchase and sale contracts and natural gas transportation contracts. Energy Trading enters into these contracts to mitigate price volatility with respect to fluctuations of the Canadian dollar relative to the U.S. dollar. These derivatives are accounted for by recording changes in fair value to earnings unless hedge accounting criteria are met.
Corporate and Other — Interest Rate Risk — DTE Energy may use interest rate swaps, treasury locks, and other derivatives to hedge the risk associated with interest rate market volatility.
Credit Risk — DTE Energy maintains credit policies that significantly minimize overall credit risk. These policies include an evaluation of potential customers’ and counterparties’ financial condition, including the viability of underlying productive assets, credit rating, collateral requirements, or other credit enhancements such as letters of credit or guarantees. DTE Energy generally uses standardized agreements that allow the netting of positive and negative transactions associated with a single counterparty. DTE Energy maintains a provision for credit losses based on factors surrounding the credit risk of its customers, historical trends, and other information. Based on DTE Energy's credit policies and its December 31, 2023 provision for credit losses, DTE Energy’s exposure to counterparty nonperformance is not expected to have a material adverse effect on DTE Energy's Consolidated Financial Statements.
Derivative Activities
DTE Energy manages its MTM risk on a portfolio basis based upon the delivery period of its contracts and the individual components of the risks within each contract. Accordingly, it records and manages the energy purchase and sale obligations under its contracts in separate components based on the commodity (e.g. electricity or natural gas), the product (e.g. electricity for delivery during peak or off-peak hours), the delivery location (e.g. by region), the risk profile (e.g. forward or option), and the delivery period (e.g. by month and year). The following describes the categories of activities represented by their operating characteristics and key risks:
•Asset Optimization — Represents derivative activity associated with assets owned and contracted by DTE Energy, including forward natural gas purchases and sales, natural gas transportation, and storage capacity. Changes in the value of derivatives in this category typically economically offset changes in the value of underlying non-derivative positions, which do not qualify for fair value accounting. The difference in accounting treatment of derivatives in this category and the underlying non-derivative positions can result in significant earnings volatility.
•Marketing and Origination — Represents derivative activity transacted by originating substantially hedged positions with wholesale energy marketers, producers, end-users, utilities, retail aggregators, and alternative energy suppliers.
•Fundamentals Based Trading — Represents derivative activity transacted with the intent of taking a view, capturing market price changes, or putting capital at risk. This activity is speculative in nature as opposed to hedging an existing exposure.
•Other — Includes derivative activity at DTE Electric related to FTRs. Changes in the value of derivative contracts at DTE Electric are recorded as Derivative assets or liabilities, with an offset to Regulatory assets or liabilities as the settlement value of these contracts will be included in the PSCR mechanism when realized.
The following table presents the fair value of derivative instruments for DTE Energy:
December 31, 2023December 31, 2022
Derivative
Assets		Derivative
Liabilities		Derivative
Assets		Derivative
Liabilities
(In millions)
Derivatives designated as hedging instruments
Interest rate contracts$— $(16)$1 $— 
Foreign currency exchange contracts— (2)— (2)
Total derivatives designated as hedging instruments$— $(18)$1 $(2)
Derivatives not designated as hedging instruments
Commodity contracts
Natural gas$637 $(615)$744 $(1,018)
Electricity421 (388)963 (935)
Environmental & Other139 (150)213 (214)
Foreign currency exchange contracts— (1)1 — 
Total derivatives not designated as hedging instruments$1,197 $(1,154)$1,921 $(2,167)
Current$910 $(847)$1,517 $(1,535)
Noncurrent287 (325)405 (634)
Total derivatives$1,197 $(1,172)$1,922 $(2,169)
The fair value of derivative instruments at DTE Electric was $7 million and $11 million at December 31, 2023 and 2022, respectively, comprised of FTRs recorded to Current Assets — Other on the Consolidated Statements of Financial Position and not designated as hedging instruments.
Certain of DTE Energy's derivative positions are subject to netting arrangements which provide for offsetting of asset and liability positions as well as related cash collateral. Such netting arrangements generally do not have restrictions. Under such netting arrangements, DTE Energy offsets the fair value of derivative instruments with cash collateral received or paid for those contracts executed with the same counterparty, which reduces DTE Energy's Total Assets and Liabilities. Cash collateral is allocated between the fair value of derivative instruments and customer accounts receivable and payable with the same counterparty on a pro-rata basis to the extent there is exposure. Any cash collateral remaining, after the exposure is netted to zero, is reflected in Accounts receivable and Accounts payable as collateral paid or received, respectively.
DTE Energy also provides and receives collateral in the form of letters of credit which can be offset against net Derivative assets and liabilities as well as Accounts receivable and payable. DTE Energy had letters of credit of $3 million issued and outstanding at December 31, 2023 and $81 million at December 31, 2022, which could be used to offset net Derivative liabilities. Letters of credit received from third parties which could be used to offset net Derivative assets were $10 million and $82 million at December 31, 2023 and 2022, respectively. Such balances of letters of credit are excluded from the tables below and are not netted with the recognized assets and liabilities in DTE Energy's Consolidated Statements of Financial Position.
For contracts with certain clearing agents, the fair value of derivative instruments is netted against realized positions with the net balance reflected as either 1) a Derivative asset or liability or 2) an Account receivable or payable. Other than certain clearing agents, Accounts receivable and Accounts payable that are subject to netting arrangements have not been offset against the fair value of Derivative assets and liabilities.
The following table presents net cash collateral offsetting arrangements for DTE Energy:
December 31,
20232022
(In millions)
Cash collateral netted against Derivative assets$— $(90)
Cash collateral netted against Derivative liabilities72 113 
Cash collateral recorded in Accounts receivable(a)
57 77 
Cash collateral recorded in Accounts payable(a)
(3)(27)
Total net cash collateral posted (received)$126 $73 
_______________________________________
(a)Amounts are recorded net by counterparty.
The following table presents the netting offsets of Derivative assets and liabilities for DTE Energy:
December 31, 2023December 31, 2022
Gross Amounts of Recognized Assets (Liabilities)Gross Amounts Offset in the Consolidated Statements of Financial PositionNet Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial PositionGross Amounts of Recognized Assets (Liabilities)Gross Amounts Offset in the Consolidated Statements of Financial PositionNet Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position
(In millions)
Derivative assets
Commodity contracts
Natural gas$637 $(416)$221 $744 $(649)$95 
Electricity421 (243)178 963 (643)320 
Environmental & Other139 (132)7 213 (196)17 
Interest rate contracts— — — 1 — 1 
Foreign currency exchange contracts— — — 1 (1)— 
Total derivative assets$1,197 $(791)$406 $1,922 $(1,489)$433 
Derivative liabilities
Commodity contracts
Natural gas$(615)$429 $(186)$(1,018)$645 $(373)
Electricity(388)297 (91)(935)665 (270)
Environmental & Other(150)137 (13)(214)201 (13)
Interest rate contracts(16)— (16)— — — 
Foreign currency exchange contracts(3)— (3)(2)1 (1)
Total derivative liabilities$(1,172)$863 $(309)$(2,169)$1,512 $(657)
The following table presents the netting offsets of Derivative assets and liabilities showing the reconciliation of derivative instruments to DTE Energy's Consolidated Statements of Financial Position:
December 31, 2023December 31, 2022
Derivative AssetsDerivative LiabilitiesDerivative AssetsDerivative Liabilities
CurrentNoncurrentCurrentNoncurrentCurrentNoncurrentCurrentNoncurrent
(In millions)
Total fair value of derivatives$910 $287 $(847)$(325)$1,517 $405 $(1,535)$(634)
Counterparty netting(613)(178)613 178 (1,127)(272)1,127 272 
Collateral adjustment— — 57 15 (62)(28)66 47 
Total derivatives as reported$297 $109 $(177)$(132)$328 $105 $(342)$(315)
The effect of derivatives not designated as hedging instruments on DTE Energy's Consolidated Statements of Operations is as follows:
Location of Gain (Loss) Recognized in Income on DerivativesGain (Loss) Recognized in Income on Derivatives for Years Ended December 31,
202320222021
(In millions)
Commodity contracts
Natural gasOperating Revenues — Non-utility operations $153 $(235)$(224)
Natural gasFuel, purchased power, gas, and other — non-utility122 (108)(89)
ElectricityOperating Revenues — Non-utility operations 105 221 169 
Environmental & OtherOperating Revenues — Non-utility operations 5 13 (40)
Foreign currency exchange contractsOperating Revenues — Non-utility operations (2)3 — 
Total$383 $(106)$(184)
Revenues and energy costs related to trading contracts are presented on a net basis in DTE Energy's Consolidated Statements of Operations. Commodity derivatives used for trading purposes, and financial non-trading commodity derivatives, are accounted for using the MTM method with unrealized and realized gains and losses recorded in Operating Revenues — Non-utility operations. Non-trading physical commodity sale and purchase derivative contracts are generally accounted for using the MTM method with unrealized and realized gains and losses for sales recorded in Operating Revenues — Non-utility operations and purchases recorded in Fuel, purchased power, gas, and other — non-utility.
The following represents the cumulative gross volume of DTE Energy's derivative contracts outstanding as of December 31, 2023:
CommodityNumber of Units
Natural gas (MMBtu)2,201,557,616 
Electricity (MWh)40,542,536 
Oil (Gallons)4,272,000 
Foreign currency exchange ($ CAD)127,326,648 
FTR (MWh)66,064 
Renewable Energy Certificates (MWh)10,242,908 
Carbon emissions (Metric Ton)746,400 
Interest rate contracts ($ USD)1,200,000,000 
Treasury Lock ($ USD)500,000,000 
Various subsidiaries and equity investees of DTE Energy have entered into derivative and non-derivative contracts which contain ratings triggers and are guaranteed by DTE Energy. These contracts contain provisions which allow the counterparties to require that DTE Energy post cash or letters of credit as collateral in the event that DTE Energy’s credit rating is downgraded below investment grade. Certain of these provisions (known as "hard triggers") state specific circumstances under which DTE Energy can be required to post collateral upon the occurrence of a credit downgrade, while other provisions (known as "soft triggers") are not as specific. For contracts with soft triggers, it is difficult to estimate the amount of collateral which may be requested by counterparties and/or which DTE Energy may ultimately be required to post. The amount of such collateral which could be requested fluctuates based on commodity prices (primarily natural gas, power, and environmental) and the provisions and maturities of the underlying transactions. As of December 31, 2023, DTE Energy's contractual obligation to post collateral in the form of cash or letters of credit in the event of a downgrade to below investment grade, under both hard trigger and soft trigger provisions, was $463 million.
As of December 31, 2023, DTE Energy had $967 million of derivatives in net liability positions, for which hard triggers exist. There is $42 million of collateral that has been posted against such liabilities, including cash and letters of credit. Associated derivative net asset positions for which contractual offset exists were $772 million. The net remaining amount of $153 million is derived from the $463 million noted above.
v3.24.0.1
Long-Term Debt
 12 Months Ended
Dec. 31, 2023
Debt Disclosure [Abstract]  
Long-Term Debt LONG-TERM DEBT
Long-Term Debt
DTE Energy's long-term debt outstanding and interest rates of debt outstanding at December 31 were:
Interest Rate(a)
Maturity Date20232022
(In millions)
Mortgage bonds, notes, and other
DTE Energy debt, unsecured3.3%2024 — 2030$5,105 $5,105 
DTE Electric debt, principally secured3.8%2024 — 205310,370 9,572 
DTE Gas debt, principally secured4.2%2025 — 20522,545 2,325 
18,020 17,002 
Unamortized debt discount(26)(26)
Unamortized debt issuance costs(100)(92)
Long-term debt due within one year(2,075)(1,077)
$15,819 $15,807 
Securitization bonds(b)
DTE Electric securitization bonds5.3%2027 — 2038$777 $215 
Unamortized debt issuance costs(8)(4)
Long-term debt due within one year(64)(39)
$705 $172 
Junior Subordinated Debentures
Subordinated debentures4.8%2077 — 2081$910 $910 
Unamortized debt issuance costs(27)(27)
$883 $883 
_______________________________________
(a)Weighted average interest rate as of December 31, 2023.
(b)Bonds are held by DTE Securitization I and DTE Securitization II, special purpose entities consolidated by DTE Electric. Refer to Note 1 to the Consolidated Financial Statements, “Organization and Basis of Presentation,” for additional information regarding these entities and restrictions related to the bonds.
DTE Electric's long-term debt outstanding and interest rates of debt outstanding at December 31 were:
Interest Rate(a)
Maturity Date20232022
(In millions)
Mortgage bonds, notes, and other
Long-term debt, principally secured3.8%2024 — 2053$10,370 $9,572 
Unamortized debt discount(23)(22)
Unamortized debt issuance costs(73)(65)
Long-term debt due within one year(100)(203)
$10,174 $9,282 
Securitization bonds(b)
DTE Electric securitization bonds5.3%2027 — 2038$777 $215 
Unamortized debt issuance costs(8)(4)
Long-term debt due within one year(64)(39)
$705 $172 
_______________________________________
(a)Weighted average interest rate as of December 31, 2023.
(b)Bonds are held by DTE Securitization I and DTE Securitization II, special purpose entities consolidated by DTE Electric. Refer to Note 1 to the Consolidated Financial Statements, “Organization and Basis of Presentation,” for additional information regarding these entities and restrictions related to the bonds.
Debt Issuances
Refer to the table below for debt issued in 2023:
CompanyMonthTypeInterest RateMaturity DateAmount
(In millions)
DTE ElectricMarch
Mortgage bonds(a)
5.20%2033$600 
DTE ElectricMarch
Mortgage bonds(a)
5.40%2053600 
DTE EnergyMarch
Term loan facility draw(b)
Variable2023200 
DTE EnergyMay
Senior notes(c)
4.875%2028800 
DTE ElectricJune
Tax-exempt revenue bonds(d)
3.875%2053100 
DTE GasOctober
Mortgage bonds(a)
5.57%2030150 
DTE GasOctober
Mortgage bonds(a)
5.73%2035145 
DTE ElectricNovember
Securitization bonds(e)
5.97%
2033(f)
301 
DTE ElectricNovember
Securitization bonds(e)
6.09%
2038(g)
301 
$3,197 
_______________________________________
(a)Proceeds used for the repayment of short-term borrowings, for capital expenditures, and for other general corporate purposes.
(b)Proceeds used for general corporate purposes.
(c)Proceeds used for the repayment of amounts outstanding under the term loan facility.
(d)Tax-exempt revenue bonds are issued by a public body that loans the proceeds to DTE Electric with terms substantially mirroring the revenue bonds. Proceeds were used to finance costs relating to solid waste disposal facilities at the Monroe and St. Clair power plants. The bonds will be subject to mandatory tender in June 2030.
(e)Bonds were issued in alignment with Green Bond principles to support the closure and recovery of St. Clair and Trenton Channel generation plants and DTE Electric's transition to cleaner energy. Proceeds were used to reimburse DTE Electric for qualified costs incurred or the net book value of the St. Clair and Trenton Channel plants and other qualified costs. The securitization financing order from the MPSC required that the net proceeds be subsequently applied by DTE Electric to retire existing debt or equity. Accordingly, DTE Electric used net proceeds of $297 million towards the partial retirement of the 2013 Series B Mortgage bonds noted in the Debt Redemptions table below and issued a special dividend of $297 million to DTE Energy. Refer to Note 9 to the Consolidated Financial Statements, "Regulatory Matters," for additional information.
(f)Principal payments on the bonds will be made semi-annually beginning September 2024, with the final payment scheduled for March 2032.
(g)Principal payments on the bonds will be made semi-annually beginning March 2032, with the final payment scheduled for September 2037.
In June 2022, DTE Energy entered into a $1.125 billion unsecured term loan with a maturity date of December 2023. Any borrowings on the loan were determined to be long-term debt, as the term of the facility exceeded one year. Through the first quarter of 2023, DTE Energy had drawn $1.0 billion on the term loan, bearing interest at SOFR plus 0.90% per annum. These borrowings were repaid in May and June 2023, as noted in the debt redemptions table below. Unused term loan capacity of $125 million terminated in June 2023 per the terms of the credit agreement.
Debt Redemptions
Refer to the table below for debt redeemed in 2023:
CompanyMonthTypeInterest RateMaturity DateAmount
(In millions)
DTE GasAprilSenior notes6.44%2023$25 
DTE EnergyMayTerm loan facilityVariable2023800
DTE ElectricJuneSecuritization bonds2.64%202319
DTE EnergyJuneTerm loan facilityVariable2023200
DTE ElectricSeptemberMortgage bonds4.31%2023102
DTE ElectricOctoberSenior notes5.19%2023100
DTE ElectricDecemberSecuritization bonds2.64%202320
DTE GasDecemberMortgage bonds3.64%202350
DTE ElectricDecember
Mortgage bonds(a)
3.65%2024300
$1,616 
_______________________________________
(a)Represents a partial redemption with $100 million remaining principal to be redeemed in 2024.
Debt Maturities
The following table shows the Registrants' scheduled debt maturities, excluding any unamortized discount on debt:
202420252026202720282029 and ThereafterTotal
(In millions)
DTE Energy(a)(b)
$2,139 $1,292 $851 $230 $1,737 $13,458 $19,707 
DTE Electric(b)
$164 $422 $251 $39 $617 $9,654 $11,147 
_______________________________________
(a)Amounts include DTE Electric's scheduled debt maturities.
(b)Amounts include DTE Securitization I and DTE Securitization II scheduled debt maturities.
The following table shows scheduled interest payments related to the Registrants' long-term debt:
202420252026202720282029 and ThereafterTotal
(In millions)
DTE Energy(a)(b)
$749 $668 $651 $623 $589 $8,412 $11,692 
DTE Electric(b)
$432 $427 $416 $408 $400 $5,150 $7,233 
_______________________________________
(a)Amounts include DTE Electric's scheduled interest payments.
(b)Amounts include DTE Securitization I and DTE Securitization II scheduled interest payments.
Junior Subordinated Debentures
DTE Energy has the right to defer interest payments on the Junior Subordinated Debentures. Should DTE Energy exercise this right, it cannot declare or pay dividends on, or redeem, purchase or acquire, any of its capital stock during the deferral period. Any deferred interest payments will bear additional interest at the rate associated with the related debt issue. As of December 31, 2023, no interest payments have been deferred on the Junior Subordinated Debentures.
Cross Default Provisions
Substantially all of the net utility properties of DTE Electric and DTE Gas are subject to the lien of mortgages. Should DTE Electric or DTE Gas fail to timely pay their indebtedness under these mortgages, such failure may create cross defaults in the indebtedness of DTE Energy.
v3.24.0.1
Preferred and Preference Securities
 12 Months Ended
Dec. 31, 2023
Preferred Stock, Number of Shares, Par Value and Other Disclosure [Abstract]  
Preferred and Preference Securities PREFERRED AND PREFERENCE SECURITIES
As of December 31, 2023, the amount of authorized and unissued stock is as follows:
CompanyType of StockPar ValueShares Authorized
DTE EnergyPreferred$— 5,000,000 
DTE ElectricPreferred$100 6,747,484 
DTE ElectricPreference$1 30,000,000 
DTE GasPreferred$1 7,000,000 
DTE GasPreference$1 4,000,000 
v3.24.0.1
Short-Term Credit Arrangements and Borrowings
 12 Months Ended
Dec. 31, 2023
Short-Term Debt [Abstract]  
Short-Term Credit Arrangements and Borrowings SHORT-TERM CREDIT ARRANGEMENTS AND BORROWINGS
DTE Energy, DTE Electric, and DTE Gas have unsecured revolving credit agreements that can be used for general corporate borrowings, but are intended to provide liquidity support for each of the companies’ commercial paper programs. Borrowings under the revolvers are available at prevailing short-term interest rates. Letters of credit of up to $500 million may also be issued under the DTE Energy revolver. DTE Energy and DTE Electric also have other facilities to support letter of credit issuance and increase liquidity.
The unsecured revolving credit agreements require a total funded debt to capitalization ratio of no more than 0.70 to 1 for DTE Energy and 0.65 to 1 for DTE Electric and DTE Gas. In the agreements, "total funded debt" means all indebtedness of each respective company and their consolidated subsidiaries, including finance lease obligations, hedge agreements, and guarantees of third parties’ debt, but excluding contingent obligations, nonrecourse and junior subordinated debt, and certain equity-linked securities and, except for calculations at the end of the second quarter, certain DTE Gas short-term debt. "Capitalization" means the sum of (a) total funded debt plus (b) "consolidated net worth," which is equal to consolidated total equity of each respective company and their consolidated subsidiaries (excluding pension effects under certain FASB statements), as determined in accordance with accounting principles generally accepted in the United States of America. At December 31, 2023, the total funded debt to total capitalization ratios for DTE Energy, DTE Electric, and DTE Gas were 0.63 to 1, 0.51 to 1, and 0.48 to 1, respectively, and were in compliance with this financial covenant.
The availability under the facilities in place at December 31, 2023 is shown in the following table:
DTE EnergyDTE ElectricDTE GasTotal
(In millions)
Unsecured revolving credit facility, expiring October 2028$1,500 $800 $300 $2,600 
Unsecured letter of credit facility, expiring June 2024175 — — 175 
Unsecured letter of credit facility, expiring February 2025150 — — 150 
Unsecured letter of credit facilities(a)
150 — — 150 
Unsecured letter of credit facility(b)
— 100 — 100 
1,975 900 300 3,175 
Amounts outstanding at December 31, 2023
Commercial paper issuances821 385 77 1,283 
Letters of credit115 44 — 159 
936 429 77 1,442 
Net availability at December 31, 2023$1,039 $471 $223 $1,733 
_______________________________________
(a)Uncommitted letter of credit facilities with automatic renewal provision and therefore no expiration.
(b)Uncommitted letter of credit facility with automatic renewal provision and therefore no expiration. DTE Energy may also utilize availability under this facility.
For both DTE Energy and DTE Electric, the weighted average interest rate for short-term borrowings was 5.6% and 4.6% at December 31, 2023 and 2022, respectively. For information related to affiliate short-term borrowings, refer to Note 23 of the Consolidated Financial Statements, "Related Party Transactions."
In conjunction with maintaining certain exchange-traded risk management positions, DTE Energy may be required to post collateral with a clearing agent. DTE Energy has a demand financing agreement with its clearing agent which allows the right of setoff with posted collateral. At December 31, 2023, the capacity under the facility was $200 million. The amounts outstanding under demand financing agreements were $152 million and $166 million at December 31, 2023 and 2022, respectively, and were fully offset by posted collateral.
Dividend Restrictions
Certain of DTE Energy’s credit facilities contain a provision requiring DTE Energy to maintain a total funded debt to capitalization ratio, as defined in the agreements, of no more than 0.70 to 1, which has the effect of limiting the amount of dividends DTE Energy can pay in order to maintain compliance with this provision. At December 31, 2023, the effect of this provision was a restriction on dividend payments to no more than $2.9 billion of DTE Energy's Retained earnings of $4.4 billion. There are no other effective limitations with respect to DTE Energy’s ability to pay dividends.
v3.24.0.1
Leases
 12 Months Ended
Dec. 31, 2023
Leases [Abstract]  
Leases LEASES
Lessee
Leases at DTE Energy are primarily comprised of various forms of equipment, computer hardware, coal railcars, production facilities, buildings, and certain easement leases with terms ranging from approximately 2 to 40 years. Leases at DTE Electric are primarily comprised of various forms of equipment, computer hardware, coal railcars, and certain easement leases with terms ranging from approximately 2 to 40 years.
A lease is deemed to exist when the Registrants have the right to control the use of identified property, plant or equipment, as conveyed through a contract, for a certain period of time and consideration paid. The right to control is deemed to occur when the Registrants have the right to obtain substantially all of the economic benefits of the identified assets and the right to direct the use of such assets.
Lease liabilities are determined utilizing a discount rate to determine the present values of lease payments. Topic 842 requires the use of the rate implicit in the lease when it is readily determinable. When the rate implicit in the lease is not readily determinable, the incremental borrowing rate is used. The Registrants have determined their respective incremental borrowing rates based upon the rate of interest that would have been paid on a collateralized basis over similar tenors to that of the leases. The incremental borrowing rates for DTE Electric and DTE Gas have been determined utilizing respective secured borrowing rates for first mortgage bonds with like tenors of remaining lease terms. Incremental borrowing rates for non-utility entities have been determined utilizing an implied secured borrowing rate based upon an unsecured rate for a similar tenor of remaining lease terms, which is then adjusted for the estimated impact of collateral.
Certain leases of the Registrants contain escalation clauses whereby the payments are adjusted for consumer price or labor indices. The Registrants have leases with non-index based escalation clauses for fixed dollar or percentage increases. DTE Energy also has leases with variable payments based upon usage of, or revenues associated with, the leased assets. DTE Electric also has leases with variable payments based upon the usage of the leased assets.
Certain leases of easements and coal railcars contain provisions whereby the Registrants have the option to terminate the lease agreement by giving notice of such termination during the time frames specified in the respective lease. The Registrants have considered such provisions in the determination of the lease term when it is reasonably certain that the lease would be terminated.
The Registrants have certain leases which contain purchase options. Based upon the nature of the leased property and terms of the purchase options, the Registrants have determined it is not reasonably certain that such purchase options will be utilized. Thus, the impact of the purchase options has not been included in the determination of right-of-use assets and lease liabilities for the subject leases.
The Registrants have certain leases which contain renewal options. Where the renewal options were deemed reasonably certain to occur, the impacts of such options were included in the determination of the right of use assets and lease liabilities.
The Registrants have agreements with lease and non-lease components, which are generally accounted for separately. Consideration in a lease is allocated between lease and non-lease components based upon the estimated relative standalone prices. The Registrants have certain coal railcar leases for which non-lease and lease components are accounted for as a single lease component, as permitted under Topic 842.
The following is a summary of the components of lease cost for the years ended December 31:
DTE EnergyDTE Electric
202320222021202320222021
(In millions)
Operating lease cost$22 $18 $19 $17 $12 $14 
Finance lease cost:
Amortization of right-of-use assets7 7 7 6 6 6 
Interest of lease liabilities— 1 1 — — — 
Total finance lease cost7 8 8 6 6 6 
Variable lease cost13 9 9 — — — 
Short-term lease cost12 19 14 4 10 6 
$54 $54 $50 $27 $28 $26 
The Registrants have elected not to apply the recognition requirements of Topic 842 to leases with a term of 12 months or less. DTE Energy and DTE Electric record operating, variable, and short-term lease costs as Operating Expenses on the Consolidated Statements of Operations, except for certain amounts that may be capitalized to Other Assets.
The following is a summary of other information related to leases for the years ended December 31:
DTE EnergyDTE Electric
202320222021202320222021
(In millions)
Supplemental Cash Flows Information
Cash paid for amounts included in the measurement of these liabilities:
Operating cash flows for finance leases$9 $8 $8 $7 $7 $7 
Operating cash flows for operating leases$19 $17 $19 $15 $12 $14 
Right-of-use assets obtained in exchange for lease obligations:
Operating leases$61 $5 $5 $61 $2 $1 
Finance leases$5 $3 $3 $5 $1 $1 
Weighted Average Remaining Lease Term (Years)
Operating leases18.712.812.719.811.110.3
Finance leases8.98.27.84.51.12.1
Weighted Average Discount Rate
Operating leases4.4 %3.7 %3.6 %4.5 %3.4 %3.4 %
Finance leases4.0 %2.4 %2.2 %5.4 %1.0 %1.0 %
The Registrants' future minimum lease payments under leases for remaining periods as of December 31, 2023 are as follows:
DTE EnergyDTE Electric
Operating LeasesFinance LeasesOperating LeasesFinance Leases
(In millions)
2024$20 $3 $16 $2 
202515 3 12 1 
202614 2 10 1 
202712 2 10 1 
202810 2 8 1 
2029 and thereafter134 6 110 — 
Total future minimum lease payments205 18 166 6 
Imputed interest(80)(2)(70)— 
Lease liabilities$125 $16 $96 $6 
Finance leases reported on the Consolidated Statements of Financial Position are as follows for the years ended December 31:
DTE EnergyDTE Electric
2023202220232022
(In millions)
Right-of-use assets, within Property, plant, and equipment, net$18 $19 $6 $6 
Current lease liabilities, within Current portion of long-term debt$3 $8 $2 $6 
Long-term lease liabilities$13 $11 $4 $1 
Lessor
DTE Energy leases a portion of its pipeline system through a finance lease contract that has been renewed through 2025, with additional renewal options reasonably certain to be exercised through 2040. DTE Energy also leases certain energy infrastructure assets for large industrial customers under separate long-term agreements through 2040 and 2042, respectively. For the agreement ending in 2040, the assets will transfer to the customer at the end of the term. For the agreement scheduled to end in 2042, the customer will have the option to extend the term in 5 year increments and may purchase the assets during the extension period. DTE Energy has accounted for a portion of these agreements as finance lease arrangements.
DTE Energy also leases various assets under operating leases for a pipeline, energy facilities and related equipment. Such leases are comprised of both fixed payments and variable payments which are contingent on volumes, with terms ranging from 2 to 24 years. Generally, the operating leases do not have renewal provisions or options to purchase the assets at the end of the lease. The operating leases generally do not have termination for convenience provisions. Termination may be allowed under specific circumstances stated in the lease contract, such as under an event of default.
Certain of the finance and operating leases have lease terms that extend to the end of the estimated economic life of the leased assets, thereby resulting in no residual value. Any remaining residual values under the finance and operating leases are expected to be recovered through rates, renewals or new lease contracts. Residual values have been determined using the estimated economic life of the leased assets. The finance and operating leases do not contain residual value guarantees.
Certain of the operating leases have both lease and non-lease components. The lease and non-lease components are allocated based upon estimated relative standalone selling prices.
A lease is deemed to exist when the Registrants have provided other parties with the right to control the use of identified property, plant or equipment, as conveyed through a contract, for a certain period of time and consideration received. The right to control is deemed to occur when the Registrants have provided other parties with the right to obtain substantially all of the economic benefits of the identified assets and the right to direct the use of such assets.
DTE Energy’s lease income associated with operating leases, including the line items in which it was included on the Consolidated Statements of Operations, was as follows:
202320222021
(In millions)
Fixed payments$15 $15 $67 
Variable payments44 67 131 
$59 $82 $198 
Operating revenues$59 $82 $103 
Other income(a)
— — 95 
$59 $82 $198 
_______________________________________
(a)Decrease in 2022 is due to the closure of the REF business.
DTE Energy’s minimum future rental revenues under operating leases for remaining periods as of December 31, 2023 are as follows:
DTE Energy
(In millions)
2024$15 
202515 
202611 
202710 
20286 
2029 and thereafter36 
$93 
Depreciation expense associated with DTE Energy's property under operating leases was $8 million, $11 million, and $22 million for the years ended December 31, 2023, 2022, and 2021 respectively.
The following is a summary of property under operating leases for DTE Energy as of December 31:
20232022
(In millions)
Gross property under operating leases$228 $282 
Accumulated amortization of property under operating leases$118 $128 
The components of DTE Energy’s net investment in finance leases for remaining periods as of December 31, 2023 are as follows:
DTE Energy
(In millions)
2024$34 
202534 
202634 
202734 
202834 
2029 and thereafter389 
Total minimum future lease receipts559 
Residual value of leased pipeline17 
Less unearned income289 
Net investment in finance lease287 
Less current portion8 
$279 
Interest income recognized under finance leases was $27 million, $24 million, and $17 million for the years ended December 31, 2023, 2022, and 2021, respectively.
Leases LEASES
Lessee
Leases at DTE Energy are primarily comprised of various forms of equipment, computer hardware, coal railcars, production facilities, buildings, and certain easement leases with terms ranging from approximately 2 to 40 years. Leases at DTE Electric are primarily comprised of various forms of equipment, computer hardware, coal railcars, and certain easement leases with terms ranging from approximately 2 to 40 years.
A lease is deemed to exist when the Registrants have the right to control the use of identified property, plant or equipment, as conveyed through a contract, for a certain period of time and consideration paid. The right to control is deemed to occur when the Registrants have the right to obtain substantially all of the economic benefits of the identified assets and the right to direct the use of such assets.
Lease liabilities are determined utilizing a discount rate to determine the present values of lease payments. Topic 842 requires the use of the rate implicit in the lease when it is readily determinable. When the rate implicit in the lease is not readily determinable, the incremental borrowing rate is used. The Registrants have determined their respective incremental borrowing rates based upon the rate of interest that would have been paid on a collateralized basis over similar tenors to that of the leases. The incremental borrowing rates for DTE Electric and DTE Gas have been determined utilizing respective secured borrowing rates for first mortgage bonds with like tenors of remaining lease terms. Incremental borrowing rates for non-utility entities have been determined utilizing an implied secured borrowing rate based upon an unsecured rate for a similar tenor of remaining lease terms, which is then adjusted for the estimated impact of collateral.
Certain leases of the Registrants contain escalation clauses whereby the payments are adjusted for consumer price or labor indices. The Registrants have leases with non-index based escalation clauses for fixed dollar or percentage increases. DTE Energy also has leases with variable payments based upon usage of, or revenues associated with, the leased assets. DTE Electric also has leases with variable payments based upon the usage of the leased assets.
Certain leases of easements and coal railcars contain provisions whereby the Registrants have the option to terminate the lease agreement by giving notice of such termination during the time frames specified in the respective lease. The Registrants have considered such provisions in the determination of the lease term when it is reasonably certain that the lease would be terminated.
The Registrants have certain leases which contain purchase options. Based upon the nature of the leased property and terms of the purchase options, the Registrants have determined it is not reasonably certain that such purchase options will be utilized. Thus, the impact of the purchase options has not been included in the determination of right-of-use assets and lease liabilities for the subject leases.
The Registrants have certain leases which contain renewal options. Where the renewal options were deemed reasonably certain to occur, the impacts of such options were included in the determination of the right of use assets and lease liabilities.
The Registrants have agreements with lease and non-lease components, which are generally accounted for separately. Consideration in a lease is allocated between lease and non-lease components based upon the estimated relative standalone prices. The Registrants have certain coal railcar leases for which non-lease and lease components are accounted for as a single lease component, as permitted under Topic 842.
The following is a summary of the components of lease cost for the years ended December 31:
DTE EnergyDTE Electric
202320222021202320222021
(In millions)
Operating lease cost$22 $18 $19 $17 $12 $14 
Finance lease cost:
Amortization of right-of-use assets7 7 7 6 6 6 
Interest of lease liabilities— 1 1 — — — 
Total finance lease cost7 8 8 6 6 6 
Variable lease cost13 9 9 — — — 
Short-term lease cost12 19 14 4 10 6 
$54 $54 $50 $27 $28 $26 
The Registrants have elected not to apply the recognition requirements of Topic 842 to leases with a term of 12 months or less. DTE Energy and DTE Electric record operating, variable, and short-term lease costs as Operating Expenses on the Consolidated Statements of Operations, except for certain amounts that may be capitalized to Other Assets.
The following is a summary of other information related to leases for the years ended December 31:
DTE EnergyDTE Electric
202320222021202320222021
(In millions)
Supplemental Cash Flows Information
Cash paid for amounts included in the measurement of these liabilities:
Operating cash flows for finance leases$9 $8 $8 $7 $7 $7 
Operating cash flows for operating leases$19 $17 $19 $15 $12 $14 
Right-of-use assets obtained in exchange for lease obligations:
Operating leases$61 $5 $5 $61 $2 $1 
Finance leases$5 $3 $3 $5 $1 $1 
Weighted Average Remaining Lease Term (Years)
Operating leases18.712.812.719.811.110.3
Finance leases8.98.27.84.51.12.1
Weighted Average Discount Rate
Operating leases4.4 %3.7 %3.6 %4.5 %3.4 %3.4 %
Finance leases4.0 %2.4 %2.2 %5.4 %1.0 %1.0 %
The Registrants' future minimum lease payments under leases for remaining periods as of December 31, 2023 are as follows:
DTE EnergyDTE Electric
Operating LeasesFinance LeasesOperating LeasesFinance Leases
(In millions)
2024$20 $3 $16 $2 
202515 3 12 1 
202614 2 10 1 
202712 2 10 1 
202810 2 8 1 
2029 and thereafter134 6 110 — 
Total future minimum lease payments205 18 166 6 
Imputed interest(80)(2)(70)— 
Lease liabilities$125 $16 $96 $6 
Finance leases reported on the Consolidated Statements of Financial Position are as follows for the years ended December 31:
DTE EnergyDTE Electric
2023202220232022
(In millions)
Right-of-use assets, within Property, plant, and equipment, net$18 $19 $6 $6 
Current lease liabilities, within Current portion of long-term debt$3 $8 $2 $6 
Long-term lease liabilities$13 $11 $4 $1 
Lessor
DTE Energy leases a portion of its pipeline system through a finance lease contract that has been renewed through 2025, with additional renewal options reasonably certain to be exercised through 2040. DTE Energy also leases certain energy infrastructure assets for large industrial customers under separate long-term agreements through 2040 and 2042, respectively. For the agreement ending in 2040, the assets will transfer to the customer at the end of the term. For the agreement scheduled to end in 2042, the customer will have the option to extend the term in 5 year increments and may purchase the assets during the extension period. DTE Energy has accounted for a portion of these agreements as finance lease arrangements.
DTE Energy also leases various assets under operating leases for a pipeline, energy facilities and related equipment. Such leases are comprised of both fixed payments and variable payments which are contingent on volumes, with terms ranging from 2 to 24 years. Generally, the operating leases do not have renewal provisions or options to purchase the assets at the end of the lease. The operating leases generally do not have termination for convenience provisions. Termination may be allowed under specific circumstances stated in the lease contract, such as under an event of default.
Certain of the finance and operating leases have lease terms that extend to the end of the estimated economic life of the leased assets, thereby resulting in no residual value. Any remaining residual values under the finance and operating leases are expected to be recovered through rates, renewals or new lease contracts. Residual values have been determined using the estimated economic life of the leased assets. The finance and operating leases do not contain residual value guarantees.
Certain of the operating leases have both lease and non-lease components. The lease and non-lease components are allocated based upon estimated relative standalone selling prices.
A lease is deemed to exist when the Registrants have provided other parties with the right to control the use of identified property, plant or equipment, as conveyed through a contract, for a certain period of time and consideration received. The right to control is deemed to occur when the Registrants have provided other parties with the right to obtain substantially all of the economic benefits of the identified assets and the right to direct the use of such assets.
DTE Energy’s lease income associated with operating leases, including the line items in which it was included on the Consolidated Statements of Operations, was as follows:
202320222021
(In millions)
Fixed payments$15 $15 $67 
Variable payments44 67 131 
$59 $82 $198 
Operating revenues$59 $82 $103 
Other income(a)
— — 95 
$59 $82 $198 
_______________________________________
(a)Decrease in 2022 is due to the closure of the REF business.
DTE Energy’s minimum future rental revenues under operating leases for remaining periods as of December 31, 2023 are as follows:
DTE Energy
(In millions)
2024$15 
202515 
202611 
202710 
20286 
2029 and thereafter36 
$93 
Depreciation expense associated with DTE Energy's property under operating leases was $8 million, $11 million, and $22 million for the years ended December 31, 2023, 2022, and 2021 respectively.
The following is a summary of property under operating leases for DTE Energy as of December 31:
20232022
(In millions)
Gross property under operating leases$228 $282 
Accumulated amortization of property under operating leases$118 $128 
The components of DTE Energy’s net investment in finance leases for remaining periods as of December 31, 2023 are as follows:
DTE Energy
(In millions)
2024$34 
202534 
202634 
202734 
202834 
2029 and thereafter389 
Total minimum future lease receipts559 
Residual value of leased pipeline17 
Less unearned income289 
Net investment in finance lease287 
Less current portion8 
$279 
Interest income recognized under finance leases was $27 million, $24 million, and $17 million for the years ended December 31, 2023, 2022, and 2021, respectively.
Leases LEASES
Lessee
Leases at DTE Energy are primarily comprised of various forms of equipment, computer hardware, coal railcars, production facilities, buildings, and certain easement leases with terms ranging from approximately 2 to 40 years. Leases at DTE Electric are primarily comprised of various forms of equipment, computer hardware, coal railcars, and certain easement leases with terms ranging from approximately 2 to 40 years.
A lease is deemed to exist when the Registrants have the right to control the use of identified property, plant or equipment, as conveyed through a contract, for a certain period of time and consideration paid. The right to control is deemed to occur when the Registrants have the right to obtain substantially all of the economic benefits of the identified assets and the right to direct the use of such assets.
Lease liabilities are determined utilizing a discount rate to determine the present values of lease payments. Topic 842 requires the use of the rate implicit in the lease when it is readily determinable. When the rate implicit in the lease is not readily determinable, the incremental borrowing rate is used. The Registrants have determined their respective incremental borrowing rates based upon the rate of interest that would have been paid on a collateralized basis over similar tenors to that of the leases. The incremental borrowing rates for DTE Electric and DTE Gas have been determined utilizing respective secured borrowing rates for first mortgage bonds with like tenors of remaining lease terms. Incremental borrowing rates for non-utility entities have been determined utilizing an implied secured borrowing rate based upon an unsecured rate for a similar tenor of remaining lease terms, which is then adjusted for the estimated impact of collateral.
Certain leases of the Registrants contain escalation clauses whereby the payments are adjusted for consumer price or labor indices. The Registrants have leases with non-index based escalation clauses for fixed dollar or percentage increases. DTE Energy also has leases with variable payments based upon usage of, or revenues associated with, the leased assets. DTE Electric also has leases with variable payments based upon the usage of the leased assets.
Certain leases of easements and coal railcars contain provisions whereby the Registrants have the option to terminate the lease agreement by giving notice of such termination during the time frames specified in the respective lease. The Registrants have considered such provisions in the determination of the lease term when it is reasonably certain that the lease would be terminated.
The Registrants have certain leases which contain purchase options. Based upon the nature of the leased property and terms of the purchase options, the Registrants have determined it is not reasonably certain that such purchase options will be utilized. Thus, the impact of the purchase options has not been included in the determination of right-of-use assets and lease liabilities for the subject leases.
The Registrants have certain leases which contain renewal options. Where the renewal options were deemed reasonably certain to occur, the impacts of such options were included in the determination of the right of use assets and lease liabilities.
The Registrants have agreements with lease and non-lease components, which are generally accounted for separately. Consideration in a lease is allocated between lease and non-lease components based upon the estimated relative standalone prices. The Registrants have certain coal railcar leases for which non-lease and lease components are accounted for as a single lease component, as permitted under Topic 842.
The following is a summary of the components of lease cost for the years ended December 31:
DTE EnergyDTE Electric
202320222021202320222021
(In millions)
Operating lease cost$22 $18 $19 $17 $12 $14 
Finance lease cost:
Amortization of right-of-use assets7 7 7 6 6 6 
Interest of lease liabilities— 1 1 — — — 
Total finance lease cost7 8 8 6 6 6 
Variable lease cost13 9 9 — — — 
Short-term lease cost12 19 14 4 10 6 
$54 $54 $50 $27 $28 $26 
The Registrants have elected not to apply the recognition requirements of Topic 842 to leases with a term of 12 months or less. DTE Energy and DTE Electric record operating, variable, and short-term lease costs as Operating Expenses on the Consolidated Statements of Operations, except for certain amounts that may be capitalized to Other Assets.
The following is a summary of other information related to leases for the years ended December 31:
DTE EnergyDTE Electric
202320222021202320222021
(In millions)
Supplemental Cash Flows Information
Cash paid for amounts included in the measurement of these liabilities:
Operating cash flows for finance leases$9 $8 $8 $7 $7 $7 
Operating cash flows for operating leases$19 $17 $19 $15 $12 $14 
Right-of-use assets obtained in exchange for lease obligations:
Operating leases$61 $5 $5 $61 $2 $1 
Finance leases$5 $3 $3 $5 $1 $1 
Weighted Average Remaining Lease Term (Years)
Operating leases18.712.812.719.811.110.3
Finance leases8.98.27.84.51.12.1
Weighted Average Discount Rate
Operating leases4.4 %3.7 %3.6 %4.5 %3.4 %3.4 %
Finance leases4.0 %2.4 %2.2 %5.4 %1.0 %1.0 %
The Registrants' future minimum lease payments under leases for remaining periods as of December 31, 2023 are as follows:
DTE EnergyDTE Electric
Operating LeasesFinance LeasesOperating LeasesFinance Leases
(In millions)
2024$20 $3 $16 $2 
202515 3 12 1 
202614 2 10 1 
202712 2 10 1 
202810 2 8 1 
2029 and thereafter134 6 110 — 
Total future minimum lease payments205 18 166 6 
Imputed interest(80)(2)(70)— 
Lease liabilities$125 $16 $96 $6 
Finance leases reported on the Consolidated Statements of Financial Position are as follows for the years ended December 31:
DTE EnergyDTE Electric
2023202220232022
(In millions)
Right-of-use assets, within Property, plant, and equipment, net$18 $19 $6 $6 
Current lease liabilities, within Current portion of long-term debt$3 $8 $2 $6 
Long-term lease liabilities$13 $11 $4 $1 
Lessor
DTE Energy leases a portion of its pipeline system through a finance lease contract that has been renewed through 2025, with additional renewal options reasonably certain to be exercised through 2040. DTE Energy also leases certain energy infrastructure assets for large industrial customers under separate long-term agreements through 2040 and 2042, respectively. For the agreement ending in 2040, the assets will transfer to the customer at the end of the term. For the agreement scheduled to end in 2042, the customer will have the option to extend the term in 5 year increments and may purchase the assets during the extension period. DTE Energy has accounted for a portion of these agreements as finance lease arrangements.
DTE Energy also leases various assets under operating leases for a pipeline, energy facilities and related equipment. Such leases are comprised of both fixed payments and variable payments which are contingent on volumes, with terms ranging from 2 to 24 years. Generally, the operating leases do not have renewal provisions or options to purchase the assets at the end of the lease. The operating leases generally do not have termination for convenience provisions. Termination may be allowed under specific circumstances stated in the lease contract, such as under an event of default.
Certain of the finance and operating leases have lease terms that extend to the end of the estimated economic life of the leased assets, thereby resulting in no residual value. Any remaining residual values under the finance and operating leases are expected to be recovered through rates, renewals or new lease contracts. Residual values have been determined using the estimated economic life of the leased assets. The finance and operating leases do not contain residual value guarantees.
Certain of the operating leases have both lease and non-lease components. The lease and non-lease components are allocated based upon estimated relative standalone selling prices.
A lease is deemed to exist when the Registrants have provided other parties with the right to control the use of identified property, plant or equipment, as conveyed through a contract, for a certain period of time and consideration received. The right to control is deemed to occur when the Registrants have provided other parties with the right to obtain substantially all of the economic benefits of the identified assets and the right to direct the use of such assets.
DTE Energy’s lease income associated with operating leases, including the line items in which it was included on the Consolidated Statements of Operations, was as follows:
202320222021
(In millions)
Fixed payments$15 $15 $67 
Variable payments44 67 131 
$59 $82 $198 
Operating revenues$59 $82 $103 
Other income(a)
— — 95 
$59 $82 $198 
_______________________________________
(a)Decrease in 2022 is due to the closure of the REF business.
DTE Energy’s minimum future rental revenues under operating leases for remaining periods as of December 31, 2023 are as follows:
DTE Energy
(In millions)
2024$15 
202515 
202611 
202710 
20286 
2029 and thereafter36 
$93 
Depreciation expense associated with DTE Energy's property under operating leases was $8 million, $11 million, and $22 million for the years ended December 31, 2023, 2022, and 2021 respectively.
The following is a summary of property under operating leases for DTE Energy as of December 31:
20232022
(In millions)
Gross property under operating leases$228 $282 
Accumulated amortization of property under operating leases$118 $128 
The components of DTE Energy’s net investment in finance leases for remaining periods as of December 31, 2023 are as follows:
DTE Energy
(In millions)
2024$34 
202534 
202634 
202734 
202834 
2029 and thereafter389 
Total minimum future lease receipts559 
Residual value of leased pipeline17 
Less unearned income289 
Net investment in finance lease287 
Less current portion8 
$279 
Interest income recognized under finance leases was $27 million, $24 million, and $17 million for the years ended December 31, 2023, 2022, and 2021, respectively.
Leases LEASES
Lessee
Leases at DTE Energy are primarily comprised of various forms of equipment, computer hardware, coal railcars, production facilities, buildings, and certain easement leases with terms ranging from approximately 2 to 40 years. Leases at DTE Electric are primarily comprised of various forms of equipment, computer hardware, coal railcars, and certain easement leases with terms ranging from approximately 2 to 40 years.
A lease is deemed to exist when the Registrants have the right to control the use of identified property, plant or equipment, as conveyed through a contract, for a certain period of time and consideration paid. The right to control is deemed to occur when the Registrants have the right to obtain substantially all of the economic benefits of the identified assets and the right to direct the use of such assets.
Lease liabilities are determined utilizing a discount rate to determine the present values of lease payments. Topic 842 requires the use of the rate implicit in the lease when it is readily determinable. When the rate implicit in the lease is not readily determinable, the incremental borrowing rate is used. The Registrants have determined their respective incremental borrowing rates based upon the rate of interest that would have been paid on a collateralized basis over similar tenors to that of the leases. The incremental borrowing rates for DTE Electric and DTE Gas have been determined utilizing respective secured borrowing rates for first mortgage bonds with like tenors of remaining lease terms. Incremental borrowing rates for non-utility entities have been determined utilizing an implied secured borrowing rate based upon an unsecured rate for a similar tenor of remaining lease terms, which is then adjusted for the estimated impact of collateral.
Certain leases of the Registrants contain escalation clauses whereby the payments are adjusted for consumer price or labor indices. The Registrants have leases with non-index based escalation clauses for fixed dollar or percentage increases. DTE Energy also has leases with variable payments based upon usage of, or revenues associated with, the leased assets. DTE Electric also has leases with variable payments based upon the usage of the leased assets.
Certain leases of easements and coal railcars contain provisions whereby the Registrants have the option to terminate the lease agreement by giving notice of such termination during the time frames specified in the respective lease. The Registrants have considered such provisions in the determination of the lease term when it is reasonably certain that the lease would be terminated.
The Registrants have certain leases which contain purchase options. Based upon the nature of the leased property and terms of the purchase options, the Registrants have determined it is not reasonably certain that such purchase options will be utilized. Thus, the impact of the purchase options has not been included in the determination of right-of-use assets and lease liabilities for the subject leases.
The Registrants have certain leases which contain renewal options. Where the renewal options were deemed reasonably certain to occur, the impacts of such options were included in the determination of the right of use assets and lease liabilities.
The Registrants have agreements with lease and non-lease components, which are generally accounted for separately. Consideration in a lease is allocated between lease and non-lease components based upon the estimated relative standalone prices. The Registrants have certain coal railcar leases for which non-lease and lease components are accounted for as a single lease component, as permitted under Topic 842.
The following is a summary of the components of lease cost for the years ended December 31:
DTE EnergyDTE Electric
202320222021202320222021
(In millions)
Operating lease cost$22 $18 $19 $17 $12 $14 
Finance lease cost:
Amortization of right-of-use assets7 7 7 6 6 6 
Interest of lease liabilities— 1 1 — — — 
Total finance lease cost7 8 8 6 6 6 
Variable lease cost13 9 9 — — — 
Short-term lease cost12 19 14 4 10 6 
$54 $54 $50 $27 $28 $26 
The Registrants have elected not to apply the recognition requirements of Topic 842 to leases with a term of 12 months or less. DTE Energy and DTE Electric record operating, variable, and short-term lease costs as Operating Expenses on the Consolidated Statements of Operations, except for certain amounts that may be capitalized to Other Assets.
The following is a summary of other information related to leases for the years ended December 31:
DTE EnergyDTE Electric
202320222021202320222021
(In millions)
Supplemental Cash Flows Information
Cash paid for amounts included in the measurement of these liabilities:
Operating cash flows for finance leases$9 $8 $8 $7 $7 $7 
Operating cash flows for operating leases$19 $17 $19 $15 $12 $14 
Right-of-use assets obtained in exchange for lease obligations:
Operating leases$61 $5 $5 $61 $2 $1 
Finance leases$5 $3 $3 $5 $1 $1 
Weighted Average Remaining Lease Term (Years)
Operating leases18.712.812.719.811.110.3
Finance leases8.98.27.84.51.12.1
Weighted Average Discount Rate
Operating leases4.4 %3.7 %3.6 %4.5 %3.4 %3.4 %
Finance leases4.0 %2.4 %2.2 %5.4 %1.0 %1.0 %
The Registrants' future minimum lease payments under leases for remaining periods as of December 31, 2023 are as follows:
DTE EnergyDTE Electric
Operating LeasesFinance LeasesOperating LeasesFinance Leases
(In millions)
2024$20 $3 $16 $2 
202515 3 12 1 
202614 2 10 1 
202712 2 10 1 
202810 2 8 1 
2029 and thereafter134 6 110 — 
Total future minimum lease payments205 18 166 6 
Imputed interest(80)(2)(70)— 
Lease liabilities$125 $16 $96 $6 
Finance leases reported on the Consolidated Statements of Financial Position are as follows for the years ended December 31:
DTE EnergyDTE Electric
2023202220232022
(In millions)
Right-of-use assets, within Property, plant, and equipment, net$18 $19 $6 $6 
Current lease liabilities, within Current portion of long-term debt$3 $8 $2 $6 
Long-term lease liabilities$13 $11 $4 $1 
Lessor
DTE Energy leases a portion of its pipeline system through a finance lease contract that has been renewed through 2025, with additional renewal options reasonably certain to be exercised through 2040. DTE Energy also leases certain energy infrastructure assets for large industrial customers under separate long-term agreements through 2040 and 2042, respectively. For the agreement ending in 2040, the assets will transfer to the customer at the end of the term. For the agreement scheduled to end in 2042, the customer will have the option to extend the term in 5 year increments and may purchase the assets during the extension period. DTE Energy has accounted for a portion of these agreements as finance lease arrangements.
DTE Energy also leases various assets under operating leases for a pipeline, energy facilities and related equipment. Such leases are comprised of both fixed payments and variable payments which are contingent on volumes, with terms ranging from 2 to 24 years. Generally, the operating leases do not have renewal provisions or options to purchase the assets at the end of the lease. The operating leases generally do not have termination for convenience provisions. Termination may be allowed under specific circumstances stated in the lease contract, such as under an event of default.
Certain of the finance and operating leases have lease terms that extend to the end of the estimated economic life of the leased assets, thereby resulting in no residual value. Any remaining residual values under the finance and operating leases are expected to be recovered through rates, renewals or new lease contracts. Residual values have been determined using the estimated economic life of the leased assets. The finance and operating leases do not contain residual value guarantees.
Certain of the operating leases have both lease and non-lease components. The lease and non-lease components are allocated based upon estimated relative standalone selling prices.
A lease is deemed to exist when the Registrants have provided other parties with the right to control the use of identified property, plant or equipment, as conveyed through a contract, for a certain period of time and consideration received. The right to control is deemed to occur when the Registrants have provided other parties with the right to obtain substantially all of the economic benefits of the identified assets and the right to direct the use of such assets.
DTE Energy’s lease income associated with operating leases, including the line items in which it was included on the Consolidated Statements of Operations, was as follows:
202320222021
(In millions)
Fixed payments$15 $15 $67 
Variable payments44 67 131 
$59 $82 $198 
Operating revenues$59 $82 $103 
Other income(a)
— — 95 
$59 $82 $198 
_______________________________________
(a)Decrease in 2022 is due to the closure of the REF business.
DTE Energy’s minimum future rental revenues under operating leases for remaining periods as of December 31, 2023 are as follows:
DTE Energy
(In millions)
2024$15 
202515 
202611 
202710 
20286 
2029 and thereafter36 
$93 
Depreciation expense associated with DTE Energy's property under operating leases was $8 million, $11 million, and $22 million for the years ended December 31, 2023, 2022, and 2021 respectively.
The following is a summary of property under operating leases for DTE Energy as of December 31:
20232022
(In millions)
Gross property under operating leases$228 $282 
Accumulated amortization of property under operating leases$118 $128 
The components of DTE Energy’s net investment in finance leases for remaining periods as of December 31, 2023 are as follows:
DTE Energy
(In millions)
2024$34 
202534 
202634 
202734 
202834 
2029 and thereafter389 
Total minimum future lease receipts559 
Residual value of leased pipeline17 
Less unearned income289 
Net investment in finance lease287 
Less current portion8 
$279 
Interest income recognized under finance leases was $27 million, $24 million, and $17 million for the years ended December 31, 2023, 2022, and 2021, respectively.
Leases LEASES
Lessee
Leases at DTE Energy are primarily comprised of various forms of equipment, computer hardware, coal railcars, production facilities, buildings, and certain easement leases with terms ranging from approximately 2 to 40 years. Leases at DTE Electric are primarily comprised of various forms of equipment, computer hardware, coal railcars, and certain easement leases with terms ranging from approximately 2 to 40 years.
A lease is deemed to exist when the Registrants have the right to control the use of identified property, plant or equipment, as conveyed through a contract, for a certain period of time and consideration paid. The right to control is deemed to occur when the Registrants have the right to obtain substantially all of the economic benefits of the identified assets and the right to direct the use of such assets.
Lease liabilities are determined utilizing a discount rate to determine the present values of lease payments. Topic 842 requires the use of the rate implicit in the lease when it is readily determinable. When the rate implicit in the lease is not readily determinable, the incremental borrowing rate is used. The Registrants have determined their respective incremental borrowing rates based upon the rate of interest that would have been paid on a collateralized basis over similar tenors to that of the leases. The incremental borrowing rates for DTE Electric and DTE Gas have been determined utilizing respective secured borrowing rates for first mortgage bonds with like tenors of remaining lease terms. Incremental borrowing rates for non-utility entities have been determined utilizing an implied secured borrowing rate based upon an unsecured rate for a similar tenor of remaining lease terms, which is then adjusted for the estimated impact of collateral.
Certain leases of the Registrants contain escalation clauses whereby the payments are adjusted for consumer price or labor indices. The Registrants have leases with non-index based escalation clauses for fixed dollar or percentage increases. DTE Energy also has leases with variable payments based upon usage of, or revenues associated with, the leased assets. DTE Electric also has leases with variable payments based upon the usage of the leased assets.
Certain leases of easements and coal railcars contain provisions whereby the Registrants have the option to terminate the lease agreement by giving notice of such termination during the time frames specified in the respective lease. The Registrants have considered such provisions in the determination of the lease term when it is reasonably certain that the lease would be terminated.
The Registrants have certain leases which contain purchase options. Based upon the nature of the leased property and terms of the purchase options, the Registrants have determined it is not reasonably certain that such purchase options will be utilized. Thus, the impact of the purchase options has not been included in the determination of right-of-use assets and lease liabilities for the subject leases.
The Registrants have certain leases which contain renewal options. Where the renewal options were deemed reasonably certain to occur, the impacts of such options were included in the determination of the right of use assets and lease liabilities.
The Registrants have agreements with lease and non-lease components, which are generally accounted for separately. Consideration in a lease is allocated between lease and non-lease components based upon the estimated relative standalone prices. The Registrants have certain coal railcar leases for which non-lease and lease components are accounted for as a single lease component, as permitted under Topic 842.
The following is a summary of the components of lease cost for the years ended December 31:
DTE EnergyDTE Electric
202320222021202320222021
(In millions)
Operating lease cost$22 $18 $19 $17 $12 $14 
Finance lease cost:
Amortization of right-of-use assets7 7 7 6 6 6 
Interest of lease liabilities— 1 1 — — — 
Total finance lease cost7 8 8 6 6 6 
Variable lease cost13 9 9 — — — 
Short-term lease cost12 19 14 4 10 6 
$54 $54 $50 $27 $28 $26 
The Registrants have elected not to apply the recognition requirements of Topic 842 to leases with a term of 12 months or less. DTE Energy and DTE Electric record operating, variable, and short-term lease costs as Operating Expenses on the Consolidated Statements of Operations, except for certain amounts that may be capitalized to Other Assets.
The following is a summary of other information related to leases for the years ended December 31:
DTE EnergyDTE Electric
202320222021202320222021
(In millions)
Supplemental Cash Flows Information
Cash paid for amounts included in the measurement of these liabilities:
Operating cash flows for finance leases$9 $8 $8 $7 $7 $7 
Operating cash flows for operating leases$19 $17 $19 $15 $12 $14 
Right-of-use assets obtained in exchange for lease obligations:
Operating leases$61 $5 $5 $61 $2 $1 
Finance leases$5 $3 $3 $5 $1 $1 
Weighted Average Remaining Lease Term (Years)
Operating leases18.712.812.719.811.110.3
Finance leases8.98.27.84.51.12.1
Weighted Average Discount Rate
Operating leases4.4 %3.7 %3.6 %4.5 %3.4 %3.4 %
Finance leases4.0 %2.4 %2.2 %5.4 %1.0 %1.0 %
The Registrants' future minimum lease payments under leases for remaining periods as of December 31, 2023 are as follows:
DTE EnergyDTE Electric
Operating LeasesFinance LeasesOperating LeasesFinance Leases
(In millions)
2024$20 $3 $16 $2 
202515 3 12 1 
202614 2 10 1 
202712 2 10 1 
202810 2 8 1 
2029 and thereafter134 6 110 — 
Total future minimum lease payments205 18 166 6 
Imputed interest(80)(2)(70)— 
Lease liabilities$125 $16 $96 $6 
Finance leases reported on the Consolidated Statements of Financial Position are as follows for the years ended December 31:
DTE EnergyDTE Electric
2023202220232022
(In millions)
Right-of-use assets, within Property, plant, and equipment, net$18 $19 $6 $6 
Current lease liabilities, within Current portion of long-term debt$3 $8 $2 $6 
Long-term lease liabilities$13 $11 $4 $1 
Lessor
DTE Energy leases a portion of its pipeline system through a finance lease contract that has been renewed through 2025, with additional renewal options reasonably certain to be exercised through 2040. DTE Energy also leases certain energy infrastructure assets for large industrial customers under separate long-term agreements through 2040 and 2042, respectively. For the agreement ending in 2040, the assets will transfer to the customer at the end of the term. For the agreement scheduled to end in 2042, the customer will have the option to extend the term in 5 year increments and may purchase the assets during the extension period. DTE Energy has accounted for a portion of these agreements as finance lease arrangements.
DTE Energy also leases various assets under operating leases for a pipeline, energy facilities and related equipment. Such leases are comprised of both fixed payments and variable payments which are contingent on volumes, with terms ranging from 2 to 24 years. Generally, the operating leases do not have renewal provisions or options to purchase the assets at the end of the lease. The operating leases generally do not have termination for convenience provisions. Termination may be allowed under specific circumstances stated in the lease contract, such as under an event of default.
Certain of the finance and operating leases have lease terms that extend to the end of the estimated economic life of the leased assets, thereby resulting in no residual value. Any remaining residual values under the finance and operating leases are expected to be recovered through rates, renewals or new lease contracts. Residual values have been determined using the estimated economic life of the leased assets. The finance and operating leases do not contain residual value guarantees.
Certain of the operating leases have both lease and non-lease components. The lease and non-lease components are allocated based upon estimated relative standalone selling prices.
A lease is deemed to exist when the Registrants have provided other parties with the right to control the use of identified property, plant or equipment, as conveyed through a contract, for a certain period of time and consideration received. The right to control is deemed to occur when the Registrants have provided other parties with the right to obtain substantially all of the economic benefits of the identified assets and the right to direct the use of such assets.
DTE Energy’s lease income associated with operating leases, including the line items in which it was included on the Consolidated Statements of Operations, was as follows:
202320222021
(In millions)
Fixed payments$15 $15 $67 
Variable payments44 67 131 
$59 $82 $198 
Operating revenues$59 $82 $103 
Other income(a)
— — 95 
$59 $82 $198 
_______________________________________
(a)Decrease in 2022 is due to the closure of the REF business.
DTE Energy’s minimum future rental revenues under operating leases for remaining periods as of December 31, 2023 are as follows:
DTE Energy
(In millions)
2024$15 
202515 
202611 
202710 
20286 
2029 and thereafter36 
$93 
Depreciation expense associated with DTE Energy's property under operating leases was $8 million, $11 million, and $22 million for the years ended December 31, 2023, 2022, and 2021 respectively.
The following is a summary of property under operating leases for DTE Energy as of December 31:
20232022
(In millions)
Gross property under operating leases$228 $282 
Accumulated amortization of property under operating leases$118 $128 
The components of DTE Energy’s net investment in finance leases for remaining periods as of December 31, 2023 are as follows:
DTE Energy
(In millions)
2024$34 
202534 
202634 
202734 
202834 
2029 and thereafter389 
Total minimum future lease receipts559 
Residual value of leased pipeline17 
Less unearned income289 
Net investment in finance lease287 
Less current portion8 
$279 
Interest income recognized under finance leases was $27 million, $24 million, and $17 million for the years ended December 31, 2023, 2022, and 2021, respectively.
v3.24.0.1
Commitments and Contingencies
 12 Months Ended
Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]  
Commitments and Contingencies COMMITMENTS AND CONTINGENCIES
Environmental
DTE Electric
Air — DTE Electric is subject to the EPA ozone and fine particulate transport and acid rain regulations that limit power plant emissions of SO2 and NOX. The EPA and the State of Michigan have also issued emission reduction regulations relating to ozone, fine particulate, regional haze, mercury, and other air pollution. These rules have led to controls on fossil-fueled power plants to reduce SO2, NOX, mercury, and other emissions. Additional rule making may occur over the next few years which could require additional controls for SO2, NOX, and other hazardous air pollutants.
In 2015, the EPA finalized National Ambient Air Quality Standards ("NAAQS") for ground level ozone. In August 2018, the EPA designated southeast Michigan as "marginal non-attainment" with the 2015 ozone NAAQS. In January 2022, after collecting several years of data, the State submitted a request to the EPA for redesignation of the southeast Michigan ozone non-attainment area to attainment, and to accept their maintenance plan and emission inventories as a revision to the Michigan State Implementation Plan (SIP). On May 19, 2023, the EPA posted in the Federal Register the redesignation of attainment of the ozone standard for the seven-county Southeast Michigan region. DTE Electric does not expect a significant financial impact related to the ozone NAAQS at this time, pending finalization of the state rules and implementation plans.
In May 2023, the EPA proposed new rules to address emissions of GHGs from existing, new, modified, or reconstructed sources in the power sector. DTE Electric provided individual comments on the proposal and also worked with industry partners on a broader set of comments. The financial impact cannot be estimated until a final rule is issued, which is currently expected in early 2024.
Pending or future legislation or other regulatory actions could have a material impact on DTE Electric's operations and financial position and the rates charged to its customers. Potential impacts include expenditures for environmental equipment beyond what is currently planned, financing costs related to additional capital expenditures, the purchase of emission credits from market sources, higher costs of purchased power, and the retirement of facilities where control equipment is not economical. DTE Electric would seek to recover these incremental costs through increased rates charged to its utility customers, as authorized by the MPSC.
To comply with air pollution requirements, DTE Electric has spent approximately $2.4 billion. DTE Electric does not anticipate additional capital expenditures for air pollution requirements, subject to the results of future rulemakings.
Water — In response to EPA regulations and in accordance with the Clean Water Act section 316(b), DTE Electric was required to examine alternatives for reducing the environmental impacts of the cooling water intake structures at several of its facilities. A final rule became effective in October 2014 which required studies to be completed and submitted as part of the NPDES permit application process to determine the type of technology needed to reduce impacts to fish. DTE Electric has completed the required studies and submitted reports for most of its generation plants, and a final study is in-process for Monroe power plant. Final compliance for the installation of any required technology to reduce the impacts of water intake structures will be determined by the state on a case by case, site specific basis. DTE Electric is currently evaluating the compliance options and working with the State of Michigan on determining whether any controls are needed. These evaluations/studies may require modifications to some existing intake structures. It is not possible to quantify the impact of this rule making at this time.
As part of the Monroe power plant NPDES permit, EGLE has added requirements to evaluate the thermal discharge of the facility as it relates to Clean Water Act section 316(a) regulations. DTE Electric has submitted to EGLE a biological demonstration study plan to evaluate the thermal discharge impacts to an aquatic community. After approval of the plan by EGLE and completion of field sampling, data will be processed and compiled into a comprehensive report. At the present time, DTE Electric cannot predict the outcome of this evaluation or financial impact.
Contaminated and Other Sites — Prior to the construction of major interstate natural gas pipelines, gas for heating and other uses was manufactured locally from processes involving coal, coke, or oil. The facilities, which produced gas, have been designated as MGP sites. DTE Electric conducted remedial investigations at contaminated sites, including three former MGP sites. Cleanup of one of the MGP sites is complete, and that site is closed. The investigations have revealed contamination related to the by-products of gas manufacturing at each MGP site. In addition to the MGP sites, DTE Electric is also in the process of cleaning up other contaminated sites, including the area surrounding an ash landfill, electrical distribution substations, electric generating power plants, and underground and above ground storage tank locations. The findings of these investigations indicated that the estimated cost to remediate these sites is expected to be incurred over the next several years. At December 31, 2023 and 2022, DTE Electric had $9 million and $10 million, respectively, accrued for remediation. These costs are not discounted to their present value. Any change in assumptions, such as remediation techniques, nature and extent of contamination, and regulatory requirements, could impact the estimate of remedial action costs for the sites and affect DTE Electric’s financial position and cash flows. DTE Electric believes the likelihood of a material change to the accrued amount is remote based on current knowledge of the conditions at each site.
Coal Combustion Residuals and Effluent Limitations Guidelines — A final EPA rule for the disposal of coal combustion residuals, commonly known as coal ash, became effective in October 2015 and has continued to be updated in subsequent years. The rule is based on the continued listing of coal ash as a non-hazardous waste and relies on various self-implementation design and performance standards. DTE Electric owns and operates three permitted engineered coal ash storage facilities to dispose of coal ash from coal-fired power plants and operates a number of smaller impoundments at its power plants subject to certain provisions in the CCR rule. At certain facilities, the rule required ongoing sampling and testing of monitoring wells, compliance with groundwater standards, and the closure of basins at the end of the useful life of the associated power plant.
On August 28, 2020, Part A of the CCR rule was published in the Federal Register and required all unlined impoundments to initiate closure as soon as technically feasible, but no later than April 11, 2021. Additionally, the rule amends certain reporting requirements and CCR website requirements. On November 12, 2020, Part B of the CCR Rule was published in the Federal Register and provided a process to determine if certain unlined impoundments with an alternative liner system may be sufficiently protective and therefore may continue to operate.
DTE Electric submitted applications to the EPA that support continued use of all impoundments through their active lives. The forced closure date of April 11, 2021 was effectively delayed, pending the EPA completing review of the applications. On September 1, 2022, DTE Electric ceased receipt of CCR and non-CCR waste streams at the St. Clair power plant bottom ash basins and initiated closure. Therefore, DTE Electric withdrew the Part A rule demonstration for St. Clair, as it was no longer necessary for the EPA to issue an extension of the April 11, 2021 deadline to cease receipt of waste.
On January 25, 2023, DTE Electric received notice of the EPA's proposed denial of Part B applications. DTE Electric provided comments on April 10, 2023, in response to the proposed decision. DTE Electric has since implemented projects at the Belle River power plant to cease receipt of waste within any unlined CCR surface impoundments. Therefore, on September 21, 2023, DTE Electric withdrew the Part B applications for the Belle River power plant, leaving only the Part B application for the Monroe power plant fly ash basin pending final review by the EPA. If the EPA's final decision remains unchanged, DTE Electric does not expect the denied application to have a significant operational or financial impact; however, DTE Electric is continuing to review and analyze potential outcomes of this matter.
On May 18, 2023, the EPA posted in the Federal Register a proposed rule to regulate legacy CCR surface impoundments and CCR management units. The rule proposes to expand the reach of the CCR rule to inactive electric generation sites and previously unregulated locations of CCR at a regulated facility. DTE Electric is currently evaluating the proposed rule. The financial impact of the proposed rule cannot be estimated until a final rule is issued, which is currently expected in mid-2024.
At the State level, legislation was signed in December 2018 and provides for further regulation of the CCR program in Michigan. Additionally, the statutory revision provides the basis of a CCR program that EGLE has submitted to the EPA for approval to fully regulate the CCR program in Michigan in lieu of a Federal permit program. The EPA is currently working with EGLE in reviewing the submitted State program, and DTE Electric will work with EGLE to implement the State program that may be approved in the future.
On October 13, 2020, the EPA finalized the ELG Reconsideration Rule which revised the regulations from the 2015 ELG rule for FGD wastewater and bottom ash transport water only. The Reconsideration Rule re-established the technology-based effluent limitations guidelines and standards applicable to FGD wastewater and bottom ash transport water. The EPA set the applicability dates for bottom ash transport water "as soon as possible" beginning October 13, 2021 and no later than December 31, 2025. FGD wastewater retrofits must be completed "as soon as possible" beginning October 13, 2021 and no later than December 31, 2025 or December 31, 2028 if a permittee decides to pursue the Voluntary Incentives Program (VIP) subcategory for FGD wastewater. If a facility applies for the VIP, they must meet more stringent standards, but are allowed an extended time period to meet the compliance requirements.
The Reconsideration Rule also provides additional compliance opportunities by finalizing low utilization and cessation of coal burning subcategories. The Reconsideration Rule provides new opportunities for DTE Electric to evaluate existing ELG compliance strategies and make any necessary adjustments to ensure full compliance with the ELGs in a cost-effective manner.
Compliance schedules for individual facilities and individual waste streams are determined through issuance of new NPDES permits by the State of Michigan. The State of Michigan has issued an NPDES permit for the Belle River power plant establishing compliance deadlines based on the 2020 Reconsideration Rule. On October 11, 2021, in consideration of the deadlines above, DTE Electric submitted a Notice of Planned Participation ("NOPP") to the State of Michigan that formally announced the intent to pursue compliance subcategories as ELG compliance options: the cessation of coal at the Belle River power plant no later than December 31, 2028 and the VIP for FGD wastewater at Monroe power plant by December 31, 2028.
On March 29, 2023, the EPA published two draft proposals to revise existing ELG rules. The first draft proposal reopened the cessation of coal compliance subcategory from the 2020 ELG rule and allows for compliance by committing to such cessation no later than December 31, 2028. This proposal was finalized by the EPA on May 30, 2023. The second draft proposal is a broader update to the ELG rules that includes revised compliance standards for FGD wastewater, bottom ash transport water, and other wastewater streams with a compliance date no later than December 31, 2029. DTE Electric's compliance strategy includes the conversion of the two generating units at the Belle River power plant to a natural gas peaking resource in 2025-2026, which was included in the NOPP filed in 2021. DTE Electric also submitted a new NOPP to apply for the cessation of coal compliance subcategory for generating units 3 and 4 at the Monroe power plant. DTE Electric plans to retire Monroe's generating units 1 and 2 in 2032.
DTE Electric continues to evaluate compliance strategies, technologies, and system designs to achieve compliance with the EPA rules at the Monroe power plant.
DTE Electric currently estimates the impact of the CCR and ELG rules to be $427 million of capital expenditures, including $417 million for 2024 through 2028. This estimate may change in future periods as DTE Electric evaluates the CCR and ELG rules discussed above that are expected to be finalized in mid-2024.
DTE Gas
Contaminated and Other Sites — DTE Gas owns or previously owned 14 former MGP sites. Investigations have revealed contamination related to the by-products of gas manufacturing at each site. Cleanup of eight MGP sites is complete and those sites are closed. DTE Gas has also completed partial closure of four additional sites. Cleanup activities associated with the remaining sites will continue over the next several years. The MPSC has established a cost deferral and rate recovery mechanism for investigation and remediation costs incurred at former MGP sites. In addition to the MGP sites, DTE Gas is also in the process of cleaning up other contaminated sites, including gate stations, gas pipeline releases, and underground storage tank locations. As of December 31, 2023 and 2022, DTE Gas had $26 million and $23 million, respectively, accrued for remediation. These costs are not discounted to their present value. Any change in assumptions, such as remediation techniques, nature and extent of contamination, and regulatory requirements, could impact the estimate of remedial action costs for the sites and affect DTE Gas' financial position and cash flows. DTE Gas anticipates the cost amortization methodology approved by the MPSC, which allows for amortization of the MGP costs over a ten-year period beginning with the year subsequent to the year the MGP costs were incurred, will prevent the associated investigation and remediation costs from having a material adverse impact on DTE Gas' results of operations.
Air — The EPA recently finalized its Good Neighbor Rule, which includes provisions for compressor engines operated for the transportation of natural gas. DTE Gas is assessing the applicability of the rule on its engines and what impacts that could have on operations. DTE Gas has not determined whether there will be a financial impact at this time.
Non-utility
DTE Energy's non-utility businesses are subject to a number of environmental laws and regulations dealing with the protection of the environment from various pollutants.
In March 2019, the EPA issued an FOV to EES Coke Battery, LLC ("EES Coke"), the Michigan coke battery facility that is a wholly-owned subsidiary of DTE Energy, alleging that the 2008 and 2014 permits issued by EGLE did not comply with the Clean Air Act. In September 2020, the EPA issued another FOV alleging EES Coke's 2018 and 2019 SO2 emissions exceeded projections and hence violated non-attainment new source review permitting requirements. EES Coke evaluated the EPA's alleged violations and believes that the permits approved by EGLE complied with the Clean Air Act. EES Coke responded to the EPA's September 2020 allegations demonstrating its actual emissions are compliant with non-attainment new source review requirements. On June 1, 2022, the U.S. Department of Justice, on behalf of the EPA, filed a complaint against EES Coke in the U.S. District Court for the Eastern District of Michigan alleging that EES Coke failed to comply with non-attainment new source review requirements under the Clean Air Act when it applied for the 2014 permit. In November 2022, the Sierra Club and City of River Rouge were granted intervention. The case is currently in the discovery phase. At the present time, DTE Energy cannot predict the outcome or financial impact of this matter.
Separately, in December 2021, EGLE issued a Notice of Violation to EES Coke alleging excess visible emissions from pushing operations. In January 2022, EES Coke provided EGLE a response describing the corrective actions taken to prevent future recurrences. At the present time, EES Coke cannot predict the outcome or financial impact of this matter.
Other
In 2010, the EPA finalized a new one-hour SO2 ambient air quality standard that requires states to submit plans and associated timelines for non-attainment areas that demonstrate attainment with the new SO2 standard in phases. Phase 1 addresses non-attainment areas designated based on ambient monitoring data. Phase 2 addresses non-attainment areas with large sources of SO2 and modeled concentrations exceeding the National Ambient Air Quality Standards for SO2. Phase 3 addresses smaller sources of SO2 with modeled or monitored exceedances of the new SO2 standard.
Michigan's Phase 1 non-attainment area includes DTE Energy facilities. However, the EPA published a Federal Implementation Plan (FIP) for the area in June 2022 that did not impact any DTE Energy facilities. It is also not expected that Phase 3 will have any impact on DTE Energy.
Michigan's Phase 2 non-attainment area includes DTE Electric facilities in St. Clair County. The EPA approved a clean data determination request submitted by EGLE. This determination suspends certain planning requirements and sanctions for the non-attainment area for as long as the area continues to attain the 2010 SO2 air quality standards, but this does not automatically redesignate the area to attainment. Until the area is officially redesignated as attainment, DTE Energy is unable to determine the impacts.
REF Guarantees
DTE Energy provided certain guarantees and indemnities in conjunction with the sales of interests in or lease of its previously operated REF facilities. The guarantees cover potential commercial, environmental, and tax-related obligations that will survive until 90 days after expiration of all applicable statutes of limitations. DTE Energy estimates that its maximum potential liability under these guarantees at December 31, 2023 was $414 million. Payments under these guarantees are considered remote.
Other Guarantees
In certain limited circumstances, the Registrants enter into contractual guarantees. The Registrants may guarantee another entity’s obligation in the event it fails to perform and may provide guarantees in certain indemnification agreements. The Registrants may also provide indirect guarantees for the indebtedness of others. DTE Energy’s guarantees are not individually material with maximum potential payments totaling $44 million at December 31, 2023. Payments under these guarantees are considered remote.
The Registrants are periodically required to obtain performance surety bonds in support of obligations to various governmental entities and other companies in connection with its operations. As of December 31, 2023, DTE Energy had $334 million of performance bonds outstanding, including $159 million for DTE Electric. Performance bonds are not individually material, except for $130 million of bonds supporting Energy Trading operations. These bonds are meant to provide counterparties with additional assurance that Energy Trading will meet its contractual obligations for various commercial transactions. The terms of the bonds align with those of the underlying Energy Trading contracts and are estimated to be outstanding approximately 1 to 3 years. In the event that any performance bonds are called for nonperformance, the Registrants would be obligated to reimburse the issuer of the performance bond. The Registrants are released from the performance bonds as the contractual performance is completed and does not believe that a material amount of any currently outstanding performance bonds will be called.
Labor Contracts
There are several bargaining units for DTE Energy subsidiaries' approximately 4,900 represented employees, including DTE Electric's approximately 2,550 represented employees. This represents 49% and 57% of DTE Energy's and DTE Electric's total employees, respectively. Of these represented employees, less than 1% have contracts expiring within one year for DTE Energy. None of the represented employees have contracts expiring within one year for DTE Electric.
Purchase Commitments
As of December 31, 2023, the Registrants were party to numerous long-term purchase commitments relating to a variety of goods and services required for their businesses. These agreements primarily consist of fuel supply commitments and renewable energy contracts for the Registrants, as well as energy trading contracts for DTE Energy. The Registrants estimate the following commitments from 2024 through 2051, as detailed in the following tables:
202420252026202720282029 and ThereafterTotal
DTE Energy(In millions)
Long-term power purchase agreements(a)
$92 $92 $92 $92 $92 $568 $1,028 
Other purchase commitments(b)
3,349 1,689 1,115 565 338 824 7,880 
Total commitments$3,441 $1,781 $1,207 $657 $430 $1,392 $8,908 
202420252026202720282029 and ThereafterTotal
DTE Electric(In millions)
Long-term power purchase agreements(a)
$98 $97 $97 $97 $97 $578 $1,064 
Other purchase commitments(b)
829 393 184 83 74 138 1,701 
Total commitments$927 $490 $281 $180 $171 $716 $2,765 
_______________________________________
(a)The agreements represent the minimum obligations with suppliers for renewable energy and renewable energy credits under existing contract terms which expire from 2030 through 2047. DTE Electric's share of plant output ranges from 28% to 100%. Purchase commitments for DTE Electric include affiliate agreements with DTE Sustainable Generation that are eliminated in consolidation for DTE Energy.
(b)Excludes amounts associated with full requirements contracts where no stated minimum purchase volume is required.
Utility capital expenditures and expenditures for non-utility businesses will be approximately $4.7 billion and $3.4 billion in 2024 for DTE Energy and DTE Electric, respectively. The Registrants have made certain commitments in connection with the estimated 2024 annual capital expenditures.
Ludington Plant Contract Dispute
DTE Electric and Consumers Energy Company ("Consumers"), joint owners of the Ludington Hydroelectric Pumped Storage plant ("Ludington"), are parties to a 2010 engineering, procurement, and construction agreement with Toshiba America Energy Systems ("TAES"), under which TAES contracted to perform a major overhaul and upgrade of Ludington. The overhauled Ludington units are operational, but TAES' work has been defective and non-conforming. DTE Electric and Consumers have demanded that TAES provide a comprehensive plan to resolve those matters, including adherence to its warranty commitments and other contractual obligations. DTE Electric and Consumers have taken extensive efforts to resolve these issues with TAES, including a formal demand to TAES' parent, Toshiba Corporation, under a parent guaranty it provided. TAES has not provided a comprehensive plan or otherwise met its performance obligations. In order to enforce the contract, DTE Electric and Consumers filed a complaint against TAES and Toshiba Corporation in the U.S. District Court for the Eastern District of Michigan in April 2022.
In June 2022, TAES and Toshiba Corporation filed a motion to dismiss the complaint, along with counterclaims seeking approximately $15 million in damages related to payments allegedly owed under the parties' contract. During September 2022, the motion to dismiss the complaint was denied. DTE Electric believes the outstanding counterclaims are without merit, but would be liable for 49% of the damages if approved. In October 2022, the combined parties submitted a joint discovery plan to proceed with the litigation process and a potential trial during the second half of 2024. DTE Electric cannot predict the financial impact or outcome of this matter.
Refer to the Ludington Accounting Application section within Note 9 to the Consolidated Financial Statements, "Regulatory Matters," for additional information regarding costs to address TAES defective work and regulatory accounting treatment.
Other Contingencies
The Registrants are involved in certain other legal, regulatory, administrative, and environmental proceedings before various courts, arbitration panels, and governmental agencies concerning claims arising in the ordinary course of business. These proceedings include certain contract disputes, additional environmental reviews and investigations, audits, inquiries from various regulators, and pending judicial matters. The Registrants cannot predict the final disposition of such proceedings. The Registrants regularly review legal matters and record provisions for claims that they can estimate and are considered probable of loss. The resolution of these pending proceedings is not expected to have a material effect on the Registrants' Consolidated Financial Statements in the periods they are resolved.
For a discussion of contingencies related to regulatory matters and derivatives, see Notes 9 and 13 to the Consolidated Financial Statements, "Regulatory Matters" and "Financial and Other Derivative Instruments," respectively.
v3.24.0.1
Nuclear Operations
 12 Months Ended
Dec. 31, 2023
Nuclear Operations [Abstract]  
Nuclear Operations NUCLEAR OPERATIONS
Property Insurance
DTE Electric maintains property insurance policies specifically for the Fermi 2 plant. These policies cover such items as replacement power and property damage. NEIL is the primary supplier of the insurance policies.
DTE Electric maintains a policy for extra expenses, including replacement power costs necessitated by Fermi 2’s unavailability due to an insured event. This policy has a 12-week waiting period and provides an aggregate $490 million of coverage over a three-year period.
DTE Electric has $1.5 billion in primary coverage and $1.25 billion of excess coverage for stabilization, decontamination, debris removal, repair and/or replacement of property, and decommissioning. The combined coverage limit for total property damage is $2.75 billion. The total limit for property damage for non-nuclear events is $1.8 billion and an aggregate of $328 million of coverage for extra expenses over a two-year period.
On December 20, 2019, the Terrorism Risk Insurance Program Reauthorization Act of 2019 was signed, extending TRIA through December 31, 2027. For multiple terrorism losses caused by acts of terrorism not covered under the TRIA occurring within one year after the first loss from terrorism, the NEIL policies would make available to all insured entities up to $3.2 billion, plus any amounts recovered from reinsurance, government indemnity, or other sources to cover losses.
Under NEIL policies, DTE Electric could be liable for maximum assessments of up to $38 million per event if the loss associated with any one event at any nuclear plant should exceed the accumulated funds available to NEIL.
Public Liability Insurance
As required by federal law, DTE Electric maintains $450 million of public liability insurance for a nuclear incident. Further, under the Price-Anderson Amendments Act of 2005, deferred premium charges up to $166 million could be levied against each licensed nuclear facility, but not more than $25 million per year per facility. Thus, deferred premium charges could be levied against all owners of licensed nuclear facilities in the event of a nuclear incident at any of these facilities.
Nuclear Fuel Disposal Costs
In accordance with the Federal Nuclear Waste Policy Act of 1982, DTE Electric has a contract with the DOE for the future storage and disposal of spent nuclear fuel from Fermi 2 that required DTE Electric to pay the DOE a fee of 1 mill per kWh of Fermi 2 electricity generated and sold. The fee was a component of nuclear fuel expense. The 1 mill per kWh DOE fee was reduced to zero effective May 16, 2014.
The DOE's Yucca Mountain Nuclear Waste Repository program for the acceptance and disposal of spent nuclear fuel was terminated in 2011. DTE Electric is a party in the litigation against the DOE for both past and future costs associated with the DOE's failure to accept spent nuclear fuel under the timetable set forth in the Federal Nuclear Waste Policy Act of 1982. In July 2012, DTE Electric executed a settlement agreement with the federal government for costs associated with the DOE's delay in acceptance of spent nuclear fuel from Fermi 2 for permanent storage. The settlement agreement, including extensions, has provided for a claims process and payment of delay-related costs experienced by DTE Electric through 2025. DTE Electric's claims are being settled and paid on a timely basis. The settlement proceeds reduce the cost of the dry cask storage facility assets and provide reimbursement for related operating expenses.
DTE Electric currently employs a spent nuclear fuel storage strategy utilizing a fuel pool and a dry cask storage facility. The spent nuclear fuel storage strategy is expected to provide sufficient spent fuel storage capability for the life of the plant as defined by DTE Electric's operating license agreement.
The federal government continues to maintain its legal obligation to accept spent nuclear fuel from Fermi 2 for permanent storage. Issues relating to long-term waste disposal policy and to the disposition of funds contributed by DTE Electric ratepayers to the federal waste fund await future governmental action.
v3.24.0.1
Retirement Benefits and Trusteed Assets
 12 Months Ended
Dec. 31, 2023
Retirement Benefits [Abstract]  
Retirement Benefits and Trusteed Assets RETIREMENT BENEFITS AND TRUSTEED ASSETS
DTE Energy's subsidiary, DTE Energy Corporate Services, LLC, sponsors defined benefit pension plans and other postretirement benefit plans covering certain employees of the Registrants. Plan participants of all plans are solely DTE Energy and affiliate participants.
The table below represents the pension and other postretirement benefit plans of each Registrant at December 31, 2023:
Registrants
DTE EnergyDTE Electric
Qualified Pension Plans
DTE Energy Company Retirement PlanXX
DTE Gas Company Retirement Plan for Employees Covered by Collective Bargaining AgreementsX
Shenango Inc. Pension Plan(a)
X
Non-qualified Pension Plans
DTE Energy Company Supplemental Retirement Plan(b)
XX
DTE Energy Company Executive Supplemental Retirement Plan(b)
XX
DTE Energy Company Supplemental Severance Benefit PlanX
Other Postretirement Benefit Plans
The DTE Energy Company Comprehensive Non-Health Welfare PlanXX
The DTE Energy Company Comprehensive Retiree Group Health Care PlanXX
DTE Supplemental Retiree Benefit PlanXX
DTE Energy Company Retiree Reimbursement Arrangement PlanXX
_____________________________________
(a)Sponsored by Shenango, LLC
(b)Sponsored by DTE Energy Company
DTE Electric participates in various plans that provide pension and other postretirement benefits for DTE Energy and its affiliates. The plans are primarily sponsored by the LLC. DTE Electric accounts for its participation in DTE Energy's qualified and non-qualified pension plans by applying multiemployer accounting. DTE Electric accounts for its participation in other postretirement benefit plans by applying multiple-employer accounting. Within multiemployer and multiple-employer plans, participants pool plan assets for investment purposes and to reduce the cost of plan administration. The primary difference between plan types is that assets contributed in multiemployer plans can be used to provide benefits for all participating employers, while assets contributed within a multiple-employer plan are restricted for use by the contributing employer.
As a result of multiemployer accounting treatment, capitalized costs associated with these plans are reflected in Property, plant, and equipment in DTE Electric's Consolidated Statements of Financial Position. The same capitalized costs are reflected as Regulatory assets and liabilities in DTE Energy's Consolidated Statements of Financial Position. For service costs recognized in earnings, these costs have historically been presented in Operation and maintenance in the Registrants' Consolidated Statements of Operations. For non-service costs recognized in earnings, these costs have historically been presented in Other (Income) and Deductions — Non-operating retirement benefits, net in DTE Energy's Consolidated Statements of Operations and Operation and maintenance in the DTE Electric Consolidated Statements of Operations.
In November 2022, DTE Electric received a rate order from the MPSC approving the deferral of qualified pension plan service and non-service costs that were previously being recognized in earnings. Therefore, the Registrants are recording these costs as Regulatory assets beginning in December 2022.
Pension Plan Benefits
DTE Energy has qualified defined benefit retirement plans for eligible represented and non-represented employees. The plans are noncontributory and provide traditional retirement benefits based on the employee's years of benefit service, average final compensation, and age at retirement. In addition, certain represented and non-represented employees are covered under cash balance provisions that determine benefits on annual employer contributions and interest credits. DTE Energy also maintains supplemental non-qualified, noncontributory, retirement benefit plans for certain management employees. These plans provide for benefits that supplement those provided by DTE Energy’s other retirement plans.
Net pension cost for DTE Energy includes the following components:
202320222021
(In millions)
Service cost$57 $95 $108 
Interest cost214 166 158 
Expected return on plan assets(352)(346)(339)
Amortization of:
Net actuarial loss7 115 196 
Prior service credit(2)(1)— 
Settlements7 94 16 
Net pension cost (credit)$(69)$123 $139 
20232022
(In millions)
Other changes in plan assets and benefit obligations recognized in Regulatory assets and Other comprehensive income (loss)
Net actuarial loss$62 $156 
Amortization of net actuarial loss and settlements(14)(209)
Amortization of prior service credit2 1 
Total recognized in Regulatory assets and Other comprehensive income (loss)$50 $(52)
Total recognized in net periodic pension cost, Regulatory assets, and Other comprehensive income (loss)$(19)$71 
The following table reconciles the obligations, assets, and funded status of the plans as well as the amounts recognized as prepaid pension cost or pension liability in DTE Energy's Consolidated Statements of Financial Position at December 31:
DTE Energy
20232022
(In millions)
Accumulated benefit obligation, end of year$4,089 $4,078 
Change in projected benefit obligation
Projected benefit obligation, beginning of year$4,309 $5,857 
Service cost57 95 
Interest cost214 166 
Actuarial (gain) loss74 (1,252)
Benefits paid(329)(278)
Settlements(7)(279)
Projected benefit obligation, end of year$4,318 $4,309 
Change in plan assets
Plan assets at fair value, beginning of year$3,897 $5,507 
Actual return on plan assets363 (1,062)
Company contributions36 9 
Benefits paid(329)(278)
Settlements(7)(279)
Plan assets at fair value, end of year$3,960 $3,897 
Funded status$(358)$(412)
Amount recorded as:
Current liabilities$(8)$(34)
Noncurrent liabilities(350)(378)
$(358)$(412)
Amounts recognized in Accumulated other comprehensive income (loss), pre-tax
Net actuarial loss$76 $85 
$76 $85 
Amounts recognized in Regulatory assets(a)
Net actuarial loss$1,426 $1,369 
Prior service credit(5)(7)
$1,421 $1,362 
______________________________________
(a)See Note 9 to the Consolidated Financial Statements, "Regulatory Matters."
The increase in DTE Energy's pension benefit obligation for the year ended December 31, 2023 was primarily due to an actuarial loss driven by a decrease in discount rates. The decrease in the pension benefit obligation in 2022 was primarily due to an actuarial gain driven by an increase in discount rates, as well as settlements arising from higher lump-sum payments to retirees during the year.
The Registrants’ policy is to fund pension costs by contributing amounts consistent with the provisions of the Pension Protection Act of 2006, and additional amounts when it deems appropriate. In 2023 and 2022, DTE Gas transferred $50 million of qualified pension plan funds to DTE Electric in exchange for cash consideration. There were no other transfers or contributions made to the qualified pension plans in 2023, 2022, or 2021. DTE Energy does not anticipate making any contributions to the qualified pension plans in 2024, subject to management discretion and any changes in financial market conditions.
DTE Energy's subsidiaries are responsible for their share of qualified and non-qualified pension benefit costs. DTE Electric's allocated portion of pension benefit costs included in regulatory assets and liabilities, operation and maintenance expense, other income and deductions, and capital expenditures was a credit of $39 million for the year ended December 31, 2023, and a cost of $101 million and $107 million for the years ended December 31, 2022 and 2021, respectively. These amounts may include recognized contractual termination benefit charges, curtailment gains, and settlement charges.
At December 31, 2023, the benefits related to DTE Energy's qualified and non-qualified pension plans expected to be paid in each of the next five years and in the aggregate for the five fiscal years thereafter are as follows:
(In millions)
2024$319 
2025328 
2026322 
2027321 
2028324 
2029-20331,605 
Total$3,219 
Assumptions used in determining the projected benefit obligation and net pension costs of DTE Energy are:
202320222021
Projected benefit obligation
Discount rate5.00%5.19%2.91%
Rate of compensation increase3.80%3.80%3.80%
Cash balance interest crediting rate3.60%3.40%2.40%
Net pension costs
Discount rate5.19%2.91%2.57%
Rate of compensation increase3.80%3.80%3.80%
Expected long-term rate of return on plan assets7.60%6.80%7.00%
Cash balance interest crediting rate3.40%2.40%2.00%
DTE Energy employs a formal process in determining the long-term rate of return for various asset classes. Management reviews historic financial market risks and returns and long-term historic relationships between the asset classes of equities, fixed income, and other assets, consistent with the widely accepted capital market principle that asset classes with higher volatility generate a greater return over the long-term. Current market factors such as inflation, interest rates, asset class risks, and asset class returns are evaluated and considered before long-term capital market assumptions are determined. The long-term portfolio return is also established employing a consistent formal process, with due consideration of diversification, active investment management, and rebalancing. Peer data is reviewed to check for reasonableness. As a result of this process, the Registrants have a long-term rate of return assumption for the pension plans of 8.00% for 2024. The Registrants believe this rate is a reasonable assumption for the long-term rate of return on plan assets given the current investment strategy.
The DTE Energy Company Affiliates Employee Benefit Plans Master Trust employs a liability driven investment program whereby the characteristics of plan liabilities are considered when determining investment policy. Risk tolerance is established through consideration of future plan cash flows, plan funded status, and corporate financial considerations. The investment portfolio contains a diversified blend of equity, fixed income, and other investments. Furthermore, equity investments are diversified across U.S. and non-U.S. stocks and large and small market capitalizations. Fixed income investments generally include U.S. Treasuries, other governmental debt, diversified corporate bonds, bank loans, and mortgage-backed securities. Other investments are used to enhance long-term returns while improving portfolio diversification. Derivatives may be utilized in a risk controlled manner, to potentially increase the portfolio beyond the market value of invested assets and/or reduce portfolio investment risk. Investment risk is measured and monitored on an ongoing basis through annual liability measurements, periodic asset/liability studies, and quarterly investment portfolio reviews.
Target allocations for DTE Energy's pension plan assets as of December 31, 2023 are listed below:
U.S. Large Capitalization (Cap) Equity Securities12 %
U.S. Small Cap and Mid Cap Equity Securities2 
Non-U.S. Equity Securities11 
Fixed Income Securities48 
Hedge Funds and Similar Investments8 
Private Equity and Other19 
100 %
The following table provides the fair value measurement amounts for DTE Energy's pension plan assets at December 31, 2023 and 2022(a):
December 31, 2023December 31, 2022
Level 1Level 2
Other(b)
TotalLevel 1Level 2
Other(b)
Total
DTE Energy asset category:(In millions)
Short-term Investments(c)
$100 $— $— $100 $77 $— $— $77 
Equity Securities
Domestic(d)
— — 550 550 — — 483 483 
International(e)
55 — 309 364 65 — 416 481 
Fixed Income Securities
Governmental(f)
531 78 — 609 506 77 — 583 
Corporate(g)
— 1,323 — 1,323 — 1,203 — 1,203 
Hedge Funds and Similar Investments(h)
104 68 110 282 86 50 185 321 
Private Equity and Other(i)
— — 732 732 — — 749 749 
DTE Energy Total$790 $1,469 $1,701 $3,960 $734 $1,330 $1,833 $3,897 
_______________________________________
(a)For a description of levels within the fair value hierarchy, see Note 12 to the Consolidated Financial Statements, "Fair Value."
(b)Amounts represent assets valued at NAV as a practical expedient for fair value.
(c)This category predominantly represents certain short-term fixed income securities and money market investments that are managed in separate accounts or commingled funds. Pricing for investments in this category is obtained from quoted prices in actively traded markets.
(d)This category represents portfolios of large, medium and small capitalization domestic equities. Investments in this category include exchange-traded securities held in a commingled fund classified as NAV assets.
(e)This category primarily consists of portfolios of non-U.S. developed and emerging market equities. Investments in this category include exchange-traded securities for which unadjusted quoted prices can be obtained and exchange-traded securities held in a commingled fund classified as NAV assets.
(f)This category includes U.S. Treasuries, bonds, and other governmental debt. Pricing for investments in this category is obtained from quoted prices in actively traded markets and quotations from broker or pricing services.
(g)This category primarily consists of corporate bonds from diversified industries, bank loans, and mortgage backed securities. Pricing for investments in this category is obtained from quotations from broker or pricing services.
(h)This category utilizes a diversified group of strategies that attempt to capture uncorrelated sources of return and includes publicly traded mutual funds, insurance-linked and asset-backed securities, commingled funds and limited partnership funds. Pricing for mutual funds in this category is obtained from quoted prices in actively traded markets. Pricing for insurance-linked and asset-backed securities is obtained from quotations from broker or pricing services. Commingled funds and limited partnership funds are classified as NAV assets.
(i)This category includes a diversified group of funds and strategies that primarily invests in private equity partnerships. This category also includes investments in private real estate and private debt. All investments in this category are classified as NAV assets.
The pension trust holds debt and equity securities directly and indirectly through commingled funds. Exchange-traded debt and equity securities held directly, as well as publicly traded commingled funds, are valued using quoted market prices in actively traded markets. Non-publicly traded commingled funds hold exchange-traded equity or debt securities and are valued based on stated NAVs. Non-exchange traded fixed income securities are valued by the trustee based upon quotations available from brokers or pricing services. A primary price source is identified by asset type, class, or issue for each security. The trustee monitors prices supplied by pricing services and may use a supplemental price source or change the primary price source of a given security if the trustee challenges an assigned price and determines that another price source is considered preferable. DTE Energy has obtained an understanding of how these prices are derived, including the nature and observability of the inputs used in deriving such prices.
Other Postretirement Benefits
The Registrants participate in defined benefit plans sponsored by the LLC that provide certain other postretirement health care and life insurance benefits for employees who are eligible for these benefits. The Registrants' policy is to fund certain trusts to meet its other postretirement benefit obligations. DTE Energy did not make any contributions to these trusts during 2023 and does not anticipate making any contributions to the trusts in 2024.
DTE Energy and DTE Electric offer a defined contribution VEBA for eligible represented and non-represented employees, in lieu of defined benefit post-employment health care benefits. The Registrants allocate a fixed amount per year to an account in a defined contribution VEBA for each employee. These accounts are managed either by the Registrant (for non-represented and certain represented groups) or by the Utility Workers of America for Local 223 employees. The following table provides contributions to the VEBA in:
202320222021
(In millions)
DTE Energy$16 $16 $18 
DTE Electric$7 $7 $8 
The Registrants also contribute a fixed amount to a Retiree Reimbursement Account for certain non-represented and represented retirees, spouses, and surviving spouses when the youngest of the retiree's covered household becomes eligible for Medicare Part A based on age. The amount of the annual allocation to each participant is determined by the employee's retirement date and increases each year for each eligible participant at the lower of the rate of medical inflation or 2%.
Net other postretirement credit for DTE Energy includes the following components:
202320222021
(In millions)
Service cost$17 $27 $30 
Interest cost65 48 46 
Expected return on plan assets(111)(126)(129)
Amortization of:
Net actuarial loss10 4 13 
Prior service credit(19)(19)(19)
Net other postretirement credit$(38)$(66)$(59)
20232022
(In millions)
Other changes in plan assets and accumulated postretirement benefit obligation recognized in Regulatory assets and Other comprehensive income (loss)
Net actuarial (gain) loss$(17)$90 
Amortization of net actuarial loss(10)(4)
Prior service cost— 1 
Amortization of prior service credit19 19 
Total recognized in Regulatory assets and Other comprehensive income (loss)$(8)$106 
Total recognized in net periodic benefit cost, Regulatory assets, and Other comprehensive income (loss)$(46)$40 
Net other postretirement credit for DTE Electric includes the following components:
202320222021
(In millions)
Service cost$13 $20 $23 
Interest cost49 37 35 
Expected return on plan assets(73)(85)(86)
Amortization of:
Net actuarial loss1 5 11 
Prior service credit(14)(14)(14)
Net other postretirement credit$(24)$(37)$(31)
20232022
(In millions)
Other changes in plan assets and accumulated postretirement benefit obligation recognized in Regulatory assets
Net actuarial (gain) loss$(6)$24 
Amortization of net actuarial loss(1)(5)
Amortization of prior service credit14 14 
Total recognized in Regulatory assets$7 $33 
Total recognized in net periodic benefit cost and Regulatory assets$(17)$(4)
The following table reconciles the obligations, assets, and funded status of the plans including amounts recorded as Accrued postretirement liability in the Registrants' Consolidated Statements of Financial Position at December 31:
DTE EnergyDTE Electric
2023202220232022
(In millions)
Change in accumulated postretirement benefit obligation
Accumulated postretirement benefit obligation, beginning of year$1,293 $1,702 $982 $1,293 
Service cost17 27 13 20 
Interest cost65 48 49 37 
Actuarial (gain) loss(5)(395)2 (301)
Benefits paid(87)(89)(64)(67)
Accumulated postretirement benefit obligation, end of year$1,283 $1,293 $982 $982 
Change in plan assets
Plan assets at fair value, beginning of year$1,577 $2,021 $1,052 $1,355 
Actual return on plan assets124 (359)81 (239)
Benefits paid(87)(85)(63)(64)
Plan assets at fair value, end of year$1,614 $1,577 $1,070 $1,052 
Funded status$331 $284 $88 $70 
Amount recorded as:
Noncurrent assets$633 $571 $378 $345 
Current liabilities(1)— — — 
Noncurrent liabilities(301)(287)(290)(275)
$331 $284 $88 $70 
Amounts recognized in Accumulated other comprehensive income (loss), pre-tax
Net actuarial gain$(13)$(14)$— $— 
Amounts recognized in Regulatory assets(a)
Net actuarial loss$173 $201 $73 $80 
Prior service credit(10)(29)(6)(20)
$163 $172 $67 $60 
______________________________________
(a)See Note 9 to the Consolidated Financial Statements, "Regulatory Matters."
The Registrants' postretirement benefit obligations did not change significantly for the year ended December 31, 2023. The Registrants' postretirement benefit obligations decreased in 2022 primarily due to actuarial gains driven by increases in discount rates.
The following table reflects other postretirement benefit plans with accumulated postretirement benefit obligations in excess of plan assets as of December 31:
DTE EnergyDTE Electric
2023202220232022
(In millions)
Accumulated postretirement benefit obligation$628 $625 $592 $591 
Fair value of plan assets326 338 302 316 
Accumulated postretirement benefit obligation in excess of plan assets$302 $287 $290 $275 
At December 31, 2023, the benefits expected to be paid, including prescription drug benefits, in each of the next five years and in the aggregate for the five fiscal years thereafter for the Registrants are as follows:
DTE EnergyDTE Electric
(In millions)
2024$84 $64 
202588 67 
202689 68 
202791 70 
202892 71 
2029-2033482 369 
Total$926 $709 
Assumptions used in determining the accumulated postretirement benefit obligation and net other postretirement benefit costs of the Registrants are:
202320222021
Accumulated postretirement benefit obligation
Discount rate5.00%5.19%2.91%
Health care trend rate pre- and post- 65
7.75 / 8.25%
6.75 / 7.25%
6.75 / 7.25%
Ultimate health care trend rate4.50%4.50%4.50%
Year in which ultimate reached pre- and post- 65203520352034
Other postretirement benefit costs
Discount rate5.19%2.91%2.58%
Expected long-term rate of return on plan assets7.20%6.40%6.70%
Health care trend rate pre- and post- 65
6.75 / 7.25%
6.75 / 7.25%
6.75 / 7.25%
Ultimate health care trend rate4.50%4.50%4.50%
Year in which ultimate reached pre- and post- 65203520342033
The process used in determining the long-term rate of return on assets for the other postretirement benefit plans is similar to that previously described for the pension plans. As a result of this process, the Registrants have a long-term rate of return assumption for the other postretirement benefit plans of 7.60% for 2024. The Registrants believe this rate is a reasonable assumption for the long-term rate of return on plan assets given the current investment strategy.
The DTE Energy Company Master VEBA Trust employs a liability driven investment program whereby the characteristics of plan liabilities are considered when determining investment policy. Risk tolerance is established through consideration of future plan cash flows, plan funded status, and corporate financial considerations. The investment portfolio contains a diversified blend of equity, fixed income, and other investments. Furthermore, equity investments are diversified across U.S. and non-U.S. stocks and large and small market capitalizations. Fixed income investments generally include U.S. Treasuries, other governmental debt, diversified corporate bonds, bank loans, and mortgage-backed securities. Other investments are used to enhance long-term returns while improving portfolio diversification. Derivatives may be utilized in a risk controlled manner to potentially increase the portfolio beyond the market value of invested assets and/or reduce portfolio investment risk. Investment risk is measured and monitored on an ongoing basis through annual liability measurements, periodic asset/liability studies, and quarterly investment portfolio reviews.
Target allocations for the Registrants' other postretirement benefit plan assets as of December 31, 2023 are listed below:
U.S. Large Cap Equity Securities5 %
Non-U.S. Equity Securities4 
Fixed Income Securities61 
Hedge Funds and Similar Investments9 
Private Equity and Other21 
100 %
The following tables provide the fair value measurement amounts for the Registrants' other postretirement benefit plan assets at December 31, 2023 and 2022(a):
December 31, 2023December 31, 2022
Level 1Level 2
Other(b)
TotalLevel 1Level 2
Other(b)
Total
(In millions)
DTE Energy asset category:
Short-term Investments(c)
$41 $— $— $41 $35 $— $— $35 
Equity Securities
Domestic(d)
— — 76 76 — — 78 78 
International(e)
7 — 43 50 9 — 61 70 
Fixed Income Securities
Governmental(f)
242 31 — 273 264 32 — 296 
Corporate(g)
— 459 212 671 — 396 194 590 
Hedge Funds and Similar Investments(h)
18 21 86 125 31 22 94 147 
Private Equity and Other(i)
— — 378 378 — — 361 361 
DTE Energy Total$308 $511 $795 $1,614 $339 $450 $788 $1,577 
DTE Electric asset category:
Short-term Investments(c)
$27 $— $— $27 $23 $— $— $23 
Equity Securities
Domestic(d)
— — 48 48 — — 50 50 
International(e)
4 — 27 31 5 — 39 44 
Fixed Income Securities
Governmental(f)
161 21 — 182 178 21 — 199 
Corporate(g)
— 302 145 447 — 262 134 396 
Hedge Funds and Similar Investments(h)
11 14 58 83 20 15 63 98 
Private Equity and Other(i)
— — 252 252 — — 242 242 
DTE Electric Total$203 $337 $530 $1,070 $226 $298 $528 $1,052 
_______________________________________
(a)For a description of levels within the fair value hierarchy see Note 12 to the Consolidated Financial Statements, "Fair Value."
(b)Amounts represent assets valued at NAV as a practical expedient for fair value.
(c)This category predominantly represents certain short-term fixed income securities and money market investments that are managed in separate accounts or commingled funds. Pricing for investments in this category is obtained from quoted prices in actively traded markets.
(d)This category represents portfolios of large, medium and small capitalization domestic equities. Investments in this category include exchange-traded securities held in a commingled fund classified as NAV assets.
(e)This category primarily consists of portfolios of non-U.S. developed and emerging market equities. Investments in this category include exchange-traded securities for which unadjusted quoted prices can be obtained and exchange-traded securities held in a commingled fund classified as NAV assets.
(f)This category includes U.S. Treasuries, bonds and other governmental debt. Pricing for investments in this category is obtained from quoted prices in actively traded markets and quotations from broker or pricing services.
(g)This category primarily consists of corporate bonds from diversified industries, bank loans, and mortgage backed securities. Pricing for investments in this category is obtained from quotations from broker or pricing services. Non-exchange traded securities and exchange-traded securities held in commingled funds are classified as NAV assets.
(h)This category utilizes a diversified group of strategies that attempt to capture uncorrelated sources of return and includes publicly traded mutual funds, insurance-linked and asset-backed securities, commingled funds and limited partnership funds. Pricing for mutual funds in this category is obtained from quoted prices in actively traded markets. Pricing for insurance-linked and asset-backed securities is obtained from quotations from broker or pricing services. Commingled funds and limited partnership funds are classified as NAV assets.
(i)This category includes a diversified group of funds and strategies that primarily invests in private equity partnerships. This category also includes investments in private real estate and private debt. All investments in this category are classified as NAV assets.
The DTE Energy Company Master VEBA Trust holds debt and equity securities directly and indirectly through commingled funds. Exchange-traded debt and equity securities held directly, as well as publicly traded commingled funds, are valued using quoted market prices in actively traded markets. Non-publicly traded commingled funds hold exchange-traded equity or debt securities and are valued based on NAVs. Non-exchange traded fixed income securities are valued by the trustee based upon quotations available from brokers or pricing services. A primary price source is identified by asset type, class, or issue for each security. The trustee monitors prices supplied by pricing services and may use a supplemental price source or change the primary price source of a given security if the trustee challenges an assigned price and determines that another price source is considered preferable. The Registrants have obtained an understanding of how these prices are derived, including the nature and observability of the inputs used in deriving such prices.
Defined Contribution Plans
The Registrants also sponsor defined contribution retirement savings plans. Participation in one of these plans is available to substantially all represented and non-represented employees. For substantially all employees, the Registrants match employee contributions up to certain predefined limits based upon eligible compensation and the employee’s contribution rate. Additionally, for eligible represented and non-represented employees who do not participate in the Pension Plans, the Registrants contribute amounts equivalent to 4% (8% for certain DTE Gas represented employees) of an employee's eligible compensation to the employee's defined contribution retirement savings plan. For DTE Energy, the cost of these plans was $75 million, $73 million, and $70 million for the years ended December 31, 2023, 2022, and 2021, respectively. For DTE Electric, the cost of these plans was $35 million for the years ended December 31, 2023 and 2022 and $34 million for the year ended December 31, 2021.
v3.24.0.1
Stock-Based Compensation
 12 Months Ended
Dec. 31, 2023
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Stock-Based Compensation STOCK-BASED COMPENSATION
DTE Energy’s stock incentive program permits the grant of incentive stock options, non-qualifying stock options, stock awards, performance shares, and performance units to employees and members of its Board of Directors. As a result of a stock award, a settlement of an award of performance shares, or by exercise of a participant’s stock option, DTE Energy may deliver common stock from its authorized but unissued common stock and/or from outstanding common stock acquired by or on behalf of DTE Energy in the name of the participant. Key provisions of the stock incentive program are:
•Authorized limit is 20,162,716 shares of common stock;
•Prohibits the grant of a stock option with an exercise price that is less than the fair market value of DTE Energy’s stock on the date of the grant; and
•Imposes the following award limits to a single participant in a single calendar year, (1) options for more than 500,000 shares of common stock; (2) stock awards for more than 150,000 shares of common stock; (3) performance share awards for more than 300,000 shares of common stock (based on the maximum payout under the award); or (4) more than 1,000,000 performance units, which have a face amount of $1.00 each.
DTE Energy records compensation expense at fair value over the vesting period for all awards it grants.
The following table summarizes the components of stock-based compensation for DTE Energy:
202320222021
(In millions)
Stock-based compensation expense$48 $62 $71 
Tax benefit$9 $11 $13 
Restricted Stock Awards
Stock awards granted under the plan are restricted for varying periods, generally for three years. Participants have all rights of a shareholder with respect to a stock award, including the right to receive dividends and vote the shares. Prior to vesting in stock awards, the participant: (i) may not sell, transfer, pledge, exchange, or otherwise dispose of shares; (ii) shall not retain custody of the share certificates; and (iii) will deliver to DTE Energy a stock power with respect to each stock award upon request.
The stock awards are recorded at cost that approximates fair value on the date of grant. The cost is amortized to compensation expense over the vesting period.
The fair value of awards vested were not material for the years ended December 31, 2023, 2022, and 2021. Compensation cost charged against income was $14 million, $15 million, and $14 million for the years ended December 31, 2023, 2022, and 2021, respectively.
Performance Share Awards
Performance shares awarded under the plan are for a specified number of shares of DTE Energy common stock that entitle the holder to receive a cash payment, shares of DTE Energy common stock, or a combination thereof. The final value of the award is determined by the achievement of certain performance objectives and market conditions. The awards vest at the end of a specified period, usually three years. Awards granted in 2023, 2022, and 2021 were primarily deemed to be equity awards. The DTE Energy stock price and number of probable shares attributable to market conditions for such equity awards are fair valued only at the grant date. DTE Energy accounts for performance share awards by accruing compensation expense over the vesting period based on: (i) the number of shares expected to be paid which is based on the probable achievement of performance objectives; and (ii) the closing stock price market value. The settlement of the award is based on the closing price at the settlement date.
DTE Energy recorded activity relating to performance share awards as follows:
202320222021
(In millions, except per share amounts)
Weighted average grant date fair value of awards granted (per share)$112.73 $120.25 $118.43 
Awards settled in cash(a)
$9 $10 $12 
Awards settled in stock(a)
$59 $72 $74 
Compensation expense$34 $47 $58 
_______________________________________
(a)Sum of awards settled in cash and stock approximates the intrinsic value of the awards.
During the vesting period, the recipient of a performance share award has no shareholder rights. During the period beginning on the date the performance shares are awarded and ending on the certification date of the performance objectives, the number of performance shares awarded will be increased, assuming full dividend reinvestment at the fair market value on the dividend payment date. The cumulative number of performance shares will be adjusted to determine the final payment based on the performance objectives achieved. Performance share awards are nontransferable and are subject to risk of forfeiture.
The following table summarizes DTE Energy’s performance share activity for the period ended December 31, 2023:
Performance SharesWeighted Average
Grant Date
Fair Value
Balance at December 31, 20221,018,057 $120.91 
Grants347,242 $112.73 
Forfeitures(65,632)$112.51 
Payouts(309,174)$112.30 
Balance at December 31, 2023990,493 $121.29 
Unrecognized Compensation Costs
As of December 31, 2023, DTE Energy's total unrecognized compensation cost related to non-vested stock incentive plan arrangements and the weighted average recognition period was as follows:
Unrecognized
Compensation
Cost		Weighted Average
to be Recognized
(In millions)(In years)
Stock awards$20 1.39
Performance shares40 1.08
$60 1.18
Allocated Stock-Based Compensation
DTE Electric received an allocation of costs from DTE Energy associated with stock-based compensation. DTE Electric's allocation for 2023, 2022, and 2021 for stock-based compensation expense was $31 million, $40 million, and $45 million, respectively.
v3.24.0.1
Segment and Related Information
 12 Months Ended
Dec. 31, 2023
Segment Reporting [Abstract]  
Segment and Related Information SEGMENT AND RELATED INFORMATION
DTE Energy sets strategic goals, allocates resources, and evaluates performance based on the following structure:
Electric segment consists principally of DTE Electric, which is engaged in the generation, purchase, distribution, and sale of electricity to approximately 2.3 million residential, commercial, and industrial customers in southeastern Michigan.
Gas segment consists principally of DTE Gas, which is engaged in the purchase, storage, transportation, distribution, and sale of natural gas to approximately 1.3 million residential, commercial, and industrial customers throughout Michigan and the sale of storage and transportation capacity.
DTE Vantage is comprised primarily of renewable energy projects that sell electricity and pipeline-quality gas and projects that deliver custom energy solutions to industrial, commercial, and institutional customers. DTE Vantage formerly included projects that produced reduced emissions fuel; however, these projects were closed as planned in 2022 upon REF facilities exhausting their eligibility for generating production tax credits.
Energy Trading consists of energy marketing and trading operations.
Corporate and Other includes various holding company activities, holds certain non-utility debt, and holds certain investments, including funds supporting regional development and economic growth.
On July 1, 2021, DTE Energy completed the separation of DT Midstream, which was comprised of the former Gas Storage and Pipelines segment and also certain holding company activity within the Corporate and Other segment. Amounts relating to DT Midstream have been classified as discontinued operations, and Gas Storage and Pipelines is no longer a reportable segment of DTE Energy. Refer to Note 4 to the Consolidated Financial Statements, “Discontinued Operations,” for additional information.
Inter-segment billing for goods and services exchanged between segments is based upon tariffed or market-based prices of the provider. Such billing primarily consists of power sales, sale and transportation of natural gas, and renewable natural gas sales in the segments below, as well as charges from Electric to other segments for use of the shared capital assets of DTE Electric. For 2021, inter-segment billing also included the sale of reduced emissions fuel at DTE Vantage.
Year Ended December 31,
202320222021
(In millions)
Electric(a)
$72 $71 $64 
Gas17 13 14 
DTE Vantage68 78 575 
Energy Trading85 102 56 
Corporate and Other— — 2 
$242 $264 $711 
_______________________________________
(a)Inter-segment billing for the Electric segment includes $3 million, $6 million, and $4 million relating to Non-utility operations for the years ended December 31, 2023, 2022, and 2021, respectively.
All inter-segment transactions and balances are eliminated in consolidation for DTE Energy. Centrally incurred costs such as labor and overheads are assigned directly to DTE Energy's business segments or allocated based on various cost drivers, depending on the nature of service provided.
The federal income tax provisions or benefits of DTE Energy’s subsidiaries are determined on an individual company basis and recognize the tax benefit of tax credits and net operating losses, if applicable. The state and local income tax provisions of the utility subsidiaries are also determined on an individual company basis and recognize the tax benefit of various tax credits and net operating losses, if applicable. The subsidiaries record federal, state, and local income taxes payable to or receivable from DTE Energy based on the federal, state, and local tax provisions of each company.
The Reclassifications and Eliminations group below also includes the reclassification of deferred tax assets and prepaid pension assets, which are netted against deferred tax liabilities and accrued pension liabilities, respectively, for presentation on the DTE Energy Consolidated Statements of Financial Position. Refer to Note 10 to the Consolidated Financial Statements, "Income Taxes," for additional information regarding the Registrants' deferred taxes and to Note 20, "Retirement Benefits and Trusteed Assets," for additional information regarding pension plans.
Financial data of DTE Energy's business segments follows:
ElectricGasDTE VantageEnergy
Trading		Corporate
and
Other		Reclassifications
and
Eliminations		Total
(In millions)
2023
Operating Revenues — Utility operations$5,804 1,748 — — — (86)$7,466 
Operating Revenues — Non-utility operations$14 — 809 4,612 — (156)$5,279 
Depreciation and amortization$1,340 209 53 4 — — $1,606 
Interest expense$432 102 15 18 270 (46)$791 
Interest income$(20)(9)(32)(9)(33)46 $(57)
Equity earnings (losses) of equity method investees$— 1 7 — (5)— $3 
Income Tax Expense (Benefit)$78 93 (22)112 (92)— $169 
Net Income (Loss) Attributable to DTE Energy Company$772 294 153 336 (158)— $1,397 
Investment in equity method investees$5 16 118 — 27 — $166 
Capital expenditures and acquisitions$3,128 746 57 3 — — $3,934 
Goodwill$1,208 743 25 17 — — $1,993 
Total Assets$32,292 7,722 1,122 1,166 4,150 (1,697)$44,755 
ElectricGasDTE VantageEnergy
Trading		Corporate
and
Other		Reclassifications
and
Eliminations		Total
(In millions)
2022
Operating Revenues — Utility operations$6,397 1,924 — — — (78)$8,243 
Operating Revenues — Non-utility operations$15 — 848 10,308 — (186)$10,985 
Depreciation and amortization$1,218 192 52 5 1 — $1,468 
Interest expense$372 91 15 17 210 (30)$675 
Interest income$(8)(8)(28)(6)(26)30 $(46)
Equity earnings of equity method investees$— 2 — — (16)— $(14)
Income Tax Expense (Benefit)$25 88 18 (31)(71)— $29 
Net Income (Loss) Attributable to DTE Energy Company$956 272 92 (92)(145)— $1,083 
Investment in equity method investees$6 15 111 — 33 — $165 
Capital expenditures and acquisitions$2,620 693 62 3 — — $3,378 
Goodwill$1,208 743 25 17 — — $1,993 
Total Assets$30,342 7,321 1,077 1,385 4,409 (1,851)$42,683 
ElectricGasDTE VantageEnergy
Trading
Corporate
and
Other(a)
Reclassifications
and
Eliminations		Total from
Continuing
Operations		Discontinued
Operations		Total
(In millions)
2021
Operating Revenues — Utility operations$5,809 1,553 — — — (74)$7,288 
Operating Revenues — Non-utility operations$12 — 1,482 6,831 2 (651)$7,676 
Depreciation and amortization$1,122 177 71 6 1 — $1,377 
Interest expense$338 81 28 5 270 (92)$630 
Interest income$— (6)(23)(1)(84)92 $(22)
Equity earnings of equity method investees$— 1 8 — 29 — $38 
Income Tax Expense (Benefit)$104 38 (31)(27)(214)— $(130)
Net Income (Loss) Attributable to DTE Energy Company$864 214 168 (83)(367)— $796 111 $907 
Investment in equity method investees$6 13 118 — 50 — $187 
Capital expenditures and acquisitions$3,016 621 69 6 — — $3,712 60 $3,772 
Goodwill$1,208 743 25 17 — — $1,993 
Total Assets$28,524 6,729 983 1,174 4,281 (1,972)$39,719 — $39,719 
_______________________________________
(a)Corporate and Other results include significant one-time items resulting from the separation of DT Midstream, including a loss on debt extinguishment of $376 million following the settlement of intercompany borrowings with DT Midstream and optional redemption of DTE Energy long-term debt. DTE Energy also recognized a tax benefit of $85 million for the remeasurement of state deferred tax liabilities following the separation of DT Midstream.
Reclassifications and Eliminations include $14 million of Operating Revenues — Non-utility operations for the year ended December 31, 2021 for eliminations related to DTE Energy's prior Gas Storage and Pipelines segment that remain in continuing operations. Eliminations for these revenues are offset by related cost eliminations and have no impact on DTE Energy net income.
v3.24.0.1
Related Party Transactions
 12 Months Ended
Dec. 31, 2023
Related Party Transactions [Abstract]  
Related Party Transactions RELATED PARTY TRANSACTIONS
DTE Electric has agreements with affiliated companies to buy and sell power, and for the purchase and transportation of fuel for use at its natural gas-fired combined cycle plant and other generation facilities. DTE Electric also has agreements with certain DTE Energy affiliates where it charges the affiliates for their use of the shared capital assets of DTE Electric. Various other corporate support expenses are accumulated by a shared services company and charged to various subsidiaries of DTE Energy, including DTE Electric.
The following is a summary of DTE Electric's transactions with affiliated companies:
202320222021
(In millions)
Revenues and Other Income
Energy sales$11 $8 $9 
Other services and interest$3 $— $2 
Shared capital assets$58 $57 $49 
Costs
Fuel and purchased power$50 $58 $13 
Other services and interest$2 $1 $— 
Corporate expenses$299 $379 $391 
Other
Dividends declared$1,002 $763 $588 
Dividends paid$1,002 $763 $588 
Capital contribution from DTE Energy$759 $600 $555 
DTE Electric's Accounts receivable and Accounts payable related to Affiliates are payable upon demand and are generally settled in cash within a monthly business cycle. Notes receivable and Short-term borrowings related to affiliates are subject to a credit agreement with DTE Energy whereby short-term excess cash or cash shortfalls are remitted to or funded by DTE Energy. This credit arrangement involves the charge and payment of interest based on monthly commercial paper rates. The weighted average interest rate for DTE Electric's affiliate borrowings was 5.6% and 4.4% at December 31, 2023 and 2022, respectively. Refer to DTE Electric's Consolidated Statements of Financial Position for affiliate balances at December 31, 2023 and 2022.
DTE Electric made charitable contributions to the DTE Energy Foundation of $2 million for the year ended December 31, 2021. There were no contributions for the years ended December 31, 2023 and 2022. The DTE Energy Foundation is a non-consolidated not-for-profit private foundation, the purpose of which is to contribute to and assist charitable organizations.
DTE Electric records federal, state, and local income taxes payable to or receivable from DTE Energy based on its federal, state, and local tax provisions. Refer to Note 10 to the Consolidated Financial Statements, "Income Taxes," for additional information. For a discussion of other related party transactions impacting DTE Electric, see Notes 20 and 21 to the Consolidated Financial Statements, "Retirement Benefits and Trusteed Assets" and "Stock-Based Compensation," respectively.
v3.24.0.1
Pay vs Performance Disclosure - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Pay vs Performance Disclosure      
Net Income $ 1,397 $ 1,083 $ 907
v3.24.0.1
Insider Trading Arrangements
 3 Months Ended
Dec. 31, 2023
Trading Arrangements, by Individual  
Rule 10b5-1 Arrangement Adopted false
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
v3.24.0.1
Significant Accounting Policies (Policies)
 12 Months Ended
Dec. 31, 2023
Accounting Policies [Abstract]  
Basis of Presentation
Basis of Presentation
The accompanying Consolidated Financial Statements of the Registrants are prepared using accounting principles generally accepted in the United States of America. These accounting principles require management to use estimates and assumptions that impact reported amounts of assets, liabilities, revenues and expenses, and the disclosure of contingent assets and liabilities. Actual results may differ from the Registrants' estimates.
The information in these combined notes relates to each of the Registrants as noted in the Index of Combined Notes to Consolidated Financial Statements. However, DTE Electric does not make any representation as to information related solely to DTE Energy or the subsidiaries of DTE Energy other than itself.
Certain prior year balances for the Registrants were reclassified to match the current year's Consolidated Financial Statements presentation.
Separation of DT Midstream
On July 1, 2021, DTE Energy completed the separation of DT Midstream, its former natural gas pipeline, storage and gathering non-utility business. Financial results of DT Midstream are presented as Income from discontinued operations, net of taxes on DTE Energy's Consolidated Statements of Operations.
No adjustments were made to the historical activity within the Consolidated Statements of Comprehensive Income, Consolidated Statements of Cash Flows, or the Consolidated Statements of Changes in Equity. Unless noted otherwise, discussion in the Notes to the Consolidated Financial Statements relate to continuing operations. Refer to Note 4 to the Consolidated Financial Statements, “Discontinued Operations,” for additional information.
Principles of Consolidation
Principles of Consolidation
The Registrants consolidate all majority-owned subsidiaries and investments in entities in which they have controlling influence. Non-majority owned investments are accounted for using the equity method when the Registrants are able to significantly influence the operating policies of the investee. When the Registrants do not influence the operating policies of an investee, the equity investment is valued at cost minus any impairments, if applicable. These Consolidated Financial Statements also reflect the Registrants' proportionate interests in certain jointly-owned utility plants. The Registrants eliminate all intercompany balances and transactions.
The Registrants evaluate whether an entity is a VIE whenever reconsideration events occur. The Registrants consolidate VIEs for which they are the primary beneficiary. If a Registrant is not the primary beneficiary and an ownership interest is held, the VIE is accounted for under the equity method of accounting. When assessing the determination of the primary beneficiary, a Registrant considers all relevant facts and circumstances, including: the power, through voting or similar rights, to direct the activities of the VIE that most significantly impact the VIE's economic performance and the obligation to absorb the expected losses and/or the right to receive the expected returns of the VIE. The Registrants perform ongoing reassessments of all VIEs to determine if the primary beneficiary status has changed.
Legal entities within the DTE Vantage segment enter into long-term contractual arrangements with customers to supply energy-related products or services. The entities are generally designed to pass-through the commodity risk associated with these contracts to the customers, with DTE Energy retaining operational and customer default risk. These entities generally are VIEs and consolidated when DTE Energy is the primary beneficiary. In addition, DTE Energy has interests in certain VIEs through which control of all significant activities is shared with partners, and therefore are generally accounted for under the equity method.
The Registrants hold ownership interests in certain limited partnerships. The limited partnerships include investment funds which support regional development and economic growth, and an operational business providing energy-related products. These entities are generally VIEs as a result of certain characteristics of the limited partnership voting rights. The ownership interests are accounted for under the equity method as the Registrants are not the primary beneficiaries.
DTE Energy has variable interests in VIEs through certain of its long-term purchase and sale contracts. DTE Electric has variable interests in VIEs through certain of its long-term purchase contracts. As of December 31, 2023, the carrying amount of assets and liabilities in DTE Energy's Consolidated Statements of Financial Position that relate to its variable interests under long-term purchase and sale contracts are predominantly related to working capital accounts and generally represent the amounts owed by or to DTE Energy for the deliveries associated with the current billing cycle under the contracts. As of December 31, 2023, the carrying amount of assets and liabilities in DTE Electric's Consolidated Statements of Financial Position that relate to its variable interests under long-term purchase contracts are predominantly related to working capital accounts and generally represent the amounts owed by DTE Electric for the deliveries associated with the current billing cycle under the contracts. The Registrants have not provided any significant form of financial support associated with these long-term contracts. There is no material potential exposure to loss as a result of DTE Energy's variable interests through these long-term purchase and sale contracts. In addition, there is no material potential exposure to loss as a result of DTE Electric's variable interests through these long-term purchase contracts.
During 2022, DTE Electric financed regulatory assets for previously deferred costs related to the River Rouge generation plant and tree trimming surge program through the sale of bonds by a wholly-owned special purpose entity, DTE Securitization I. During 2023, DTE Electric similarly financed regulatory assets for previously deferred costs related to the Trenton Channel and St. Clair generation plants through the sale of bonds by a wholly-owned special purpose entity, DTE Securitization II. DTE Securitization I and DTE Securitization II (collectively "the DTE Securitization entities") are VIEs. DTE Electric has the power to direct the most significant activities of the DTE Securitization entities, including performing servicing activities such as billing and collecting surcharge revenue. Accordingly, DTE Electric is the primary beneficiary and the DTE Securitization entities are consolidated by the Registrants. Securitization bond holders have no recourse to the Registrants' assets, except for those held by the DTE Securitization entities. Surcharges collected by DTE Electric to pay for bond servicing and other qualified costs reflect securitization property solely owned by the DTE Securitization entities. These surcharges are remitted to a trustee and are not available to other creditors of the Registrants.
The maximum risk exposure for consolidated VIEs is reflected on the Registrants' Consolidated Statements of Financial Position. For non-consolidated VIEs, the maximum risk exposure of the Registrants is generally limited to their investment, notes receivable, and future funding commitments.
Other Income
Other Income
Other income for the Registrants is recognized for non-operating income such as equity earnings of equity method investees, allowance for equity funds used during construction, contract services, and certain investment income, primarily from trading securities held in DTE Energy's rabbi trust. For 2021, the DTE Vantage segment also recognized Other income in connection with the sale of membership interests in reduced emissions fuel facilities to investors.
Accounting for ISO Transactions
Accounting for ISO Transactions
DTE Electric participates in the energy market through MISO. MISO requires that DTE Electric submit hourly day-ahead, real-time, and FTR bids and offers for energy at locations across the MISO region. DTE Electric accounts for MISO transactions on a net hourly basis in each of the day-ahead, real-time, and FTR markets. In any single hour, transactions in each of the MISO energy markets are netted based on MWh to determine if DTE Electric is in a net sale or purchase position. Net purchases are recorded in Fuel, purchased power, and gas — utility and net sales are recorded in Operating Revenues — Utility operations on the Registrants' Consolidated Statements of Operations.
The Energy Trading segment participates in the energy markets through various ISOs and RTOs. These markets require that Energy Trading submits hourly day-ahead, real-time bids and offers for energy at locations across each region. Energy Trading submits bids in the annual and monthly auction revenue rights and FTR auctions to the RTOs. Energy Trading accounts for these transactions on a net hourly basis for the day-ahead, real-time, and FTR markets. These transactions are related to trading contracts which, if derivatives, are presented on a net basis in Operating Revenues — Non-utility operations, and if non-derivatives, the realized gains and losses for sales are recorded in Operating Revenues — Non-utility operations and purchases are recorded in Fuel, purchased power, gas, and other — non-utility in the DTE Energy Consolidated Statements of Operations.
DTE Electric and Energy Trading record accruals for future net purchases adjustments based on historical experience and reconcile accruals to actual costs when invoices are received from MISO and other ISOs and RTOs.
Derivatives
Derivatives
Energy Trading classifies derivative transactions as revenue or expense based on the intent of the transaction (buy or sell). Revenues are recorded on a gross or net basis within the income statement depending upon whether it represents a non-trading activity or trading activity, respectively. Cash flows associated with derivative instruments, including related gains and losses, are presented as Operating Activities within the Registrants' Consolidated Statements of Cash Flows.
The Registrants recognize all derivatives at their fair value as Derivative assets or liabilities on their respective Consolidated Statements of Financial Position unless they qualify for certain scope exceptions, including the normal purchases and normal sales exception. Further, derivatives that qualify and are designated for hedge accounting are classified as either hedges of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (cash flow hedge); or as hedges of the fair value of a recognized asset or liability or of an unrecognized firm commitment (fair value hedge). For cash flow hedges, the derivative gain or loss is deferred in Accumulated other comprehensive income (loss) and later reclassified into earnings when the underlying transaction occurs. For fair value hedges, changes in fair values for the derivative and hedged item are recognized in earnings each period. For derivatives that do not qualify or are not designated for hedge accounting, changes in fair value are recognized in earnings each period.
The Registrants' primary market risk exposure is associated with commodity prices, credit, and interest rates. The Registrants have risk management policies to monitor and manage market risks. The Registrants use derivative instruments to manage some of the exposure. DTE Energy uses derivative instruments for trading purposes in its Energy Trading segment. Contracts classified as derivative instruments include electricity, natural gas, oil, certain environmental contracts, forwards, futures, options, swaps, and foreign currency exchange contracts. Items not classified as derivatives include natural gas and environmental inventory, pipeline transportation contracts, some environmental contracts, and natural gas storage assets.
DTE Electric — DTE Electric generates, purchases, distributes, and sells electricity. DTE Electric uses forward contracts to manage changes in the price of electricity and fuel. Substantially all of these contracts meet the normal purchases and normal sales exception and are therefore accounted for under the accrual method. Other derivative contracts are MTM and recoverable through the PSCR mechanism when settled. This results in the deferral of unrealized gains and losses as Regulatory assets or liabilities until realized.
DTE Gas — DTE Gas purchases, stores, transports, distributes, and sells natural gas, and buys and sells transportation and storage capacity. DTE Gas has fixed-priced contracts for portions of its expected natural gas supply requirements through March 2026. Substantially all of these contracts meet the normal purchases and normal sales exception and are therefore accounted for under the accrual method. Forward transportation and storage contracts are generally not derivatives and are therefore accounted for under the accrual method.
DTE Vantage — This segment manages and operates renewable gas recovery projects, power generation assets, and other customer specific energy solutions. Long-term contracts and hedging instruments are used in the marketing and management of the segment assets. These contracts and hedging instruments are generally not derivatives and are therefore accounted for under the accrual method.
Energy Trading — Commodity Price Risk — Energy Trading markets and trades electricity, natural gas physical products, and energy financial instruments, and provides energy and asset management services utilizing energy commodity derivative instruments. Forwards, futures, options, and swap agreements are used to manage exposure to the risk of market price and volume fluctuations in its operations. These derivatives are accounted for by recording changes in fair value to earnings unless hedge accounting criteria are met.
Energy Trading — Foreign Currency Exchange Risk — Energy Trading has foreign currency exchange forward contracts to economically hedge fixed Canadian dollar commitments existing under natural gas and power purchase and sale contracts and natural gas transportation contracts. Energy Trading enters into these contracts to mitigate price volatility with respect to fluctuations of the Canadian dollar relative to the U.S. dollar. These derivatives are accounted for by recording changes in fair value to earnings unless hedge accounting criteria are met.
Corporate and Other — Interest Rate Risk — DTE Energy may use interest rate swaps, treasury locks, and other derivatives to hedge the risk associated with interest rate market volatility.
Credit Risk — DTE Energy maintains credit policies that significantly minimize overall credit risk. These policies include an evaluation of potential customers’ and counterparties’ financial condition, including the viability of underlying productive assets, credit rating, collateral requirements, or other credit enhancements such as letters of credit or guarantees. DTE Energy generally uses standardized agreements that allow the netting of positive and negative transactions associated with a single counterparty. DTE Energy maintains a provision for credit losses based on factors surrounding the credit risk of its customers, historical trends, and other information. Based on DTE Energy's credit policies and its December 31, 2023 provision for credit losses, DTE Energy’s exposure to counterparty nonperformance is not expected to have a material adverse effect on DTE Energy's Consolidated Financial Statements.
Changes in Accumulated Other Comprehensive Income (Loss)
Changes in Accumulated Other Comprehensive Income (Loss)
Comprehensive income (loss) is the change in common shareholders’ equity during a period from transactions and events from non-owner sources, including Net Income. The amounts recorded to Accumulated other comprehensive income (loss) for DTE Energy include changes in benefit obligations, consisting of deferred actuarial losses and prior service costs, unrealized gains and losses from derivatives accounted for as cash flow hedges, and foreign currency translation adjustments, if any. DTE Energy releases income tax effects from accumulated other comprehensive income when the circumstances upon which they are premised cease to exist.
Changes in Accumulated other comprehensive income (loss) are presented in DTE Energy's Consolidated Statements of Changes in Equity and DTE Electric's Consolidated Statements of Changes in Shareholder's Equity, if any.
Cash, Cash Equivalents, and Restricted Cash
Cash, Cash Equivalents, and Restricted Cash
Cash and cash equivalents include cash on hand, cash in banks, and temporary investments purchased with remaining maturities of three months or less. Restricted cash includes funds held in separate bank accounts and principally consists of amounts at DTE Securitization I and DTE Securitization II to pay for debt service and other qualified costs. Restricted cash also consists of funds held to satisfy contractual obligations related to a large construction project at DTE Vantage. Restricted cash designated for payments within one year is classified as a Current Asset.
Financing Receivables
Financing Receivables
Financing receivables are primarily composed of trade receivables, notes receivable, and unbilled revenue. The Registrants' financing receivables are stated at net realizable value.
DTE Energy had unbilled revenues of $882 million and $1.2 billion at December 31, 2023 and 2022, respectively, including $311 million and $290 million of DTE Electric unbilled revenues, respectively, included in Customer Accounts receivable.
The Registrants monitor the credit quality of their financing receivables on a regular basis by reviewing credit quality indicators and monitoring for trigger events, such as a credit rating downgrade or bankruptcy. Credit quality indicators include, but are not limited to, ratings by credit agencies where available, collection history, collateral, counterparty financial statements and other internal metrics. Utilizing such data, the Registrants have determined three internal grades of credit quality. Internal grade 1 includes financing receivables for counterparties where credit rating agencies have ranked the counterparty as investment grade. To the extent credit ratings are not available, the Registrants utilize other credit quality indicators to determine the level of risk associated with the financing receivable. Internal grade 1 may include financing receivables for counterparties for which credit rating agencies have ranked the counterparty as below investment grade; however, due to favorable information on other credit quality indicators, the Registrants have determined the risk level to be similar to that of an investment grade counterparty. Internal grade 2 includes financing receivables for counterparties with limited credit information and those with a higher risk profile based upon credit quality indicators. Internal grade 3 reflects financing receivables for which the counterparties have the greatest level of risk, including those in bankruptcy status.
The following represents the Registrants' financing receivables by year of origination, classified by internal grade of credit risk, including current year-to-date gross write-offs, if any. The related credit quality indicators and risk ratings utilized to develop the internal grades have been updated through December 31, 2023.
DTE EnergyDTE Electric
Year of origination
202320222021 and priorTotal2023 and prior
(In millions)
Notes receivable
Internal grade 1$19 $— $4 $23 $18 
Internal grade 223 112 17 152 1 
Total notes receivable(a)
$42 $112 $21 $175 $19 
Net investment in leases
Internal grade 1$— $— $37 $37 $— 
Internal grade 2— 66 184 250 — 
Total net investment in leases(a)
$— $66 $221 $287 $— 
_______________________________________
(a)For DTE Energy and DTE Electric, the current portion is included in Current Assets — Other on the respective Consolidated Statements of Financial Position. For DTE Electric, the noncurrent portion is included in Other Assets — Other.
The allowance for doubtful accounts on accounts receivable for the utility entities is generally calculated using an aging approach that utilizes rates developed in reserve studies. DTE Electric and DTE Gas establish an allowance for uncollectible accounts based on historical losses and management's assessment of existing and future economic conditions, customer trends and other factors. Customer accounts are generally considered delinquent if the amount billed is not received by the due date, which is typically in 21 days, however, factors such as assistance programs may delay aggressive action. DTE Electric and DTE Gas generally assess late payment fees on trade receivables based on past-due terms with customers. Customer accounts are written off when collection efforts have been exhausted. The time period for write-off is 150 days after service has been terminated.
The customer allowance for doubtful accounts for non-utility businesses and other receivables for both utility and non-utility businesses is generally calculated based on specific review of probable future collections based on receivable balances generally in excess of 30 days. Existing and future economic conditions, customer trends and other factors are also considered. Receivables are written off on a specific identification basis and determined based upon the specific circumstances of the associated receivable.
Notes receivable for DTE Energy are primarily comprised of finance lease receivables and loans that are included in Notes Receivable and Other current assets on DTE Energy's Consolidated Statements of Financial Position. Notes receivable for DTE Electric are primarily comprised of loans.
The Registrants establish an allowance for credit loss for principal and interest amounts due that are estimated to be uncollectible in accordance with the contractual terms of the note receivable. In determining the allowance for credit losses for notes receivable, the Registrants consider the historical payment experience and other factors that are expected to have a specific impact on the counterparty's ability to pay including existing and future economic conditions. Notes receivable are typically considered delinquent when payment is not received for periods ranging from 60 to 120 days. If amounts are no longer probable of collection, the Registrants may consider the note receivable impaired, adjust the allowance, and cease accruing interest (nonaccrual status).
Cash payments received on nonaccrual status notes receivable, that do not bring the account contractually current, are first applied to the contractually owed past due interest, with any remainder applied to principal. Accrual of interest is generally resumed when the note receivable becomes contractually current.
The following tables present a roll-forward of the activity for the Registrants' financing receivables credit loss reserves:
DTE EnergyDTE Electric
Trade accounts receivableOther receivablesTotalTrade and other accounts receivable
(In millions)
Balance at December 31, 2020$101 $3 $104 $57 
Current period provision53 1 54 36 
Write-offs charged against allowance(126)(1)(127)(77)
Recoveries of amounts previously written off61 — 61 38 
Balance at December 31, 2021$89 $3 $92 $54 
Current period provision49 — 49 33 
Write-offs charged against allowance(105)(2)(107)(66)
Recoveries of amounts previously written off45 — 45 28 
Balance at December 31, 2022$78 $1 $79 $49 
Current period provision52 — 52 36 
Write-offs charged against allowance(112)— (112)(72)
Recoveries of amounts previously written off44 — 44 28 
Balance at December 31, 2023$62 $1 $63 $41 
Uncollectible expense for the Registrants is primarily comprised of the current period provision for allowance for doubtful accounts and is summarized as follows:
Year Ended December 31,
202320222021
(In millions)
DTE Energy$55 $55 $55 
DTE Electric$38 $35 $36 
There are no material amounts of past due financing receivables for the Registrants as of December 31, 2023.
Inventories
Inventories
Inventory related to utility and non-utility operations is valued at the lower of cost or net realizable value, where cost is generally valued using average cost. Inventory primarily includes fuel, gas, materials, and supplies. Other inventories include RECs, emission allowances, and other environmental products in the Energy Trading segment.
Property, Retirement and Maintenance, and Depreciation and Amortization and Capitalized Software
Property, Retirement and Maintenance, and Depreciation and Amortization
Property is stated at cost and includes construction-related labor, materials, overheads, and AFUDC for utility property. The cost of utility properties retired is charged to accumulated depreciation. Expenditures for maintenance and repairs are charged to expense when incurred.
Utility property at DTE Electric and DTE Gas is depreciated over its estimated useful life using straight-line rates approved by the MPSC. DTE Energy's non-utility property is depreciated over its estimated useful life using the straight-line method. Depreciation and amortization expense also includes the amortization of certain regulatory assets and liabilities for the Registrants.
The cost of nuclear fuel is capitalized. The amortization of nuclear fuel is included within Fuel, purchased power, and gas — utility in the DTE Energy Consolidated Statements of Operations, and Fuel and purchased power in the DTE Electric Consolidated Statements of Operations, and is recorded using the units-of-production method.
Capitalized software costs are classified as Property, plant, and equipment and the related amortization is included in Accumulated depreciation and amortization on the Registrants' Consolidated Statements of Financial Position. The Registrants capitalize the costs associated with computer software developed or obtained for use in their businesses. The Registrants amortize capitalized software costs on a straight-line basis over the expected period of benefit, ranging from 3 to 15 years for both DTE Energy and DTE Electric.
Long-Lived Assets
Long-Lived Assets
Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. If the carrying amount of the asset exceeds the expected undiscounted future cash flows generated by the asset, an impairment loss is recognized resulting in the asset being written down to its estimated fair value. Assets to be disposed of are reported at the lower of the carrying amount or fair value, less costs to sell.
Goodwill
Goodwill
DTE Energy has goodwill resulting from business combinations. For each reporting unit with goodwill, DTE Energy performs an impairment test annually or whenever events or circumstances indicate that the value of goodwill may be impaired.
Intangible Assets DTE Energy amortizes contract intangible assets on a straight-line basis over the expected period of benefit.
Cloud Computing Arrangements
Cloud Computing Arrangements
The Registrants capitalize implementation costs incurred in a cloud computing arrangement that is a service contract consistent with capitalized implementation costs incurred to develop or obtain internal-use software. Capitalized costs are recorded in Other noncurrent assets on the Consolidated Statements of Financial Position and amortization of the costs is reflected in Operation and maintenance within the Consolidated Statements of Operations. Costs are amortized on a straight-line basis over the life of the contract. Contracts primarily involve the implementation or upgrade of cloud-based solutions for generation and distribution operations and customer service support.
Excise and Sales Taxes and Income Taxes
Excise and Sales Taxes
The Registrants record the billing of excise and sales taxes as a receivable with an offsetting payable to the applicable taxing authority, with no net impact on the Registrants’ Consolidated Statements of Operations.
Deferred tax assets and liabilities are recognized for the estimated future tax effect of temporary differences between the tax basis of assets or liabilities and the reported amounts in the Registrants' Consolidated Financial Statements.
Deferred Debt Costs
Deferred Debt Costs
The costs related to the issuance of long-term debt are deferred and amortized over the life of each debt issue. The deferred amounts are included as a direct deduction from the carrying amount of each debt issue in Mortgage bonds, notes, and other and Securitization bonds on the Registrants' Consolidated Statements of Financial Position and in Junior subordinated debentures on DTE Energy's Consolidated Statements of Financial Position. In accordance with MPSC regulations applicable to DTE Energy’s electric and gas utilities, the unamortized discount, premium, and expense related to utility debt redeemed with a refinancing are amortized over the life of the replacement issue. Discounts, premiums, and expense on early redemptions of debt associated with DTE Energy's non-utility operations are charged to earnings.
Investments in Debt and Equity Securities
Investments in Debt and Equity Securities
The Registrants generally record investments in debt and equity securities at market value with unrealized gains or losses included in earnings. Changes in the fair value of Fermi 2 nuclear decommissioning investments are recorded as adjustments to Regulatory assets or liabilities, due to a recovery mechanism from customers. The Registrants' equity investments are reviewed for impairment each reporting period. If the assessment indicates that an impairment exists, a loss is recognized resulting in the equity investment being written down to its estimated fair value.
DTE Energy Foundation
DTE Energy Foundation
DTE Energy made a charitable contribution to the DTE Energy Foundation of $25 million for the year ended December 31, 2021. There were no contributions for the years ended December 31, 2023 and 2022. The DTE Energy Foundation is a non-consolidated not-for-profit private foundation, the purpose of which is to contribute to and assist charitable organizations.
New Accounting Pronouncements
Recently Adopted Pronouncements
In March 2022, the FASB issued ASU No. 2022-02, Financial Instruments – Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures. The amendments in this update eliminate the accounting guidance for troubled debt restructurings by creditors that have adopted the Current Expected Credit Loss (“CECL”) model under ASC 326 and enhance the disclosure requirements for loan refinancings and restructurings made with borrowers experiencing financial difficulty. Additionally, the amendments require the disclosure of current period gross write-offs for financing receivables and net investment in leases by year of origination in the vintage disclosures. The Registrants adopted the ASU effective January 1, 2023 using the prospective approach, with no impact on the Registrants' financial position or results of operations. Gross write-offs, if any, will be disclosed in the Financing Receivables section of Note 2 to the Consolidated Financial Statements, "Significant Accounting Policies."
Recently Issued Pronouncements
In November 2023, the FASB issued ASU No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The amendments in this update require disclosure of incremental segment information and the title and position of the chief operating decision maker ("CODM"). Registrants will be required to disclose significant segment expenses that are regularly provided to the CODM, as well as additional information on segment profit and loss measures and how such information is used by the CODM to assess segment performance and allocate resources. The ASU is effective for the Registrants for fiscal years beginning after December 15, 2023, and interim periods for fiscal years beginning after December 15, 2024, on a retrospective basis. Early adoption is permitted. The Registrants will apply the guidance upon the effective date.
In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendments in this update require enhanced income tax disclosures, particularly related to a reporting entity's effective tax rate reconciliation and income taxes paid. For the rate reconciliation table, the update requires additional categories of information about federal, state, and foreign taxes and details about significant reconciling items, subject to a quantitative threshold. Income taxes paid must be similarly disaggregated by federal, state, and foreign based on a quantitative threshold. The ASU is effective for the Registrants for annual periods beginning after December 15, 2024. The guidance shall be applied on a prospective basis with the option to apply retrospectively. Early adoption is permitted. The Registrants will apply the guidance upon the effective date.
Revenue
Revenue is measured based upon the consideration specified in a contract with a customer at the time when performance obligations are satisfied. A performance obligation is a promise in a contract to transfer a distinct good or service or a series of distinct goods or services to the customer. The Registrants recognize revenue when performance obligations are satisfied by transferring control over a product or service to a customer. The Registrants have determined control to be transferred when the product is delivered, or the service is provided to the customer.
Rates for DTE Electric and DTE Gas include provisions to adjust billings for fluctuations in fuel and purchased power costs, cost of natural gas, and certain other costs. Revenues are adjusted for differences between actual costs subject to reconciliation and the amounts billed in current rates. Under or over recovered revenues related to these cost recovery mechanisms are included in Regulatory assets or liabilities on the Registrants' Consolidated Statements of Financial Position and are recovered or returned to customers through adjustments to the billing factors.
Asset Retirement Obligations
DTE Electric has a legal retirement obligation for the decommissioning costs for its Fermi 1 and Fermi 2 nuclear plants, dismantlement of facilities located on leased property, and various other operations. DTE Electric has conditional retirement obligations for asbestos and PCB removal at certain of its power plants and various distribution equipment. DTE Gas has conditional retirement obligations for gas pipelines, certain service centers, and compressor and gate stations. The Registrants recognize such obligations as liabilities at fair market value when they are incurred, which generally is at the time the associated assets are placed in service. Fair value is measured using expected future cash outflows discounted at the Registrants' credit-adjusted risk-free rate. For its utility operations, the Registrants recognize in the Consolidated Statements of Operations removal costs in accordance with regulatory treatment. Any differences between costs recognized related to asset retirement and those reflected in rates are recognized as either a Regulatory asset or liability on the Consolidated Statements of Financial Position.
If a reasonable estimate of fair value cannot be made in the period in which the retirement obligation is incurred, such as for assets with indeterminate lives, the liability is recognized when a reasonable estimate of fair value can be made. Natural gas storage system and certain other distribution assets for DTE Gas and substations, manholes, and certain other distribution assets for DTE Electric have an indeterminate life. Therefore, no liability has been recorded for these assets.
Regulatory Assets and Liabilities
Regulatory Assets and Liabilities
DTE Electric and DTE Gas are required to record Regulatory assets and liabilities for certain transactions that would have been treated as revenue or expense in non-regulated businesses. Continued applicability of regulatory accounting treatment requires that rates be designed to recover specific costs of providing regulated services and be charged to and collected from customers. Future regulatory changes could result in the discontinuance of this accounting treatment for Regulatory assets and liabilities for some or all of the Registrants' businesses and may require the write-off of the portion of any Regulatory asset or liability that was no longer probable of recovery through regulated rates. Management believes that currently available facts support the continued use of Regulatory assets and liabilities and that all Regulatory assets and liabilities are recoverable or refundable in the current regulatory environment.
Fair Value Measurement
Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date in a principal or most advantageous market. Fair value is a market-based measurement that is determined based on inputs, which refer broadly to assumptions that market participants use in pricing assets or liabilities. These inputs can be readily observable, market corroborated, or generally unobservable inputs. The Registrants make certain assumptions they believe that market participants would use in pricing assets or liabilities, including assumptions about risk, and the risks inherent in the inputs to valuation techniques. Credit risk of the Registrants and their counterparties is incorporated in the valuation of assets and liabilities through the use of credit reserves, the impact of which was immaterial at December 31, 2023 and 2022. The Registrants believe they use valuation techniques that maximize the use of observable market-based inputs and minimize the use of unobservable inputs.
A fair value hierarchy has been established that prioritizes the inputs to valuation techniques used to measure fair value in three broad levels. The fair value hierarchy gives the highest priority to quoted prices (unadjusted) in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). In some cases, the inputs used to measure fair value might fall in different levels of the fair value hierarchy. All assets and liabilities are required to be classified in their entirety based on the lowest level of input that is significant to the fair value measurement in its entirety. Assessing the significance of a particular input may require judgment considering factors specific to the asset or liability and may affect the valuation of the asset or liability and its placement within the fair value hierarchy. The Registrants classify fair value balances based on the fair value hierarchy defined as follows:
•Level 1 — Consists of unadjusted quoted prices in active markets for identical assets or liabilities that the Registrants have the ability to access as of the reporting date.
•Level 2 — Consists of inputs other than quoted prices included within Level 1 that are directly observable for the asset or liability or indirectly observable through corroboration with observable market data.
•Level 3 — Consists of unobservable inputs for assets or liabilities whose fair value is estimated based on internally developed models or methodologies using inputs that are generally less readily observable and supported by little, if any, market activity at the measurement date. Unobservable inputs are developed based on the best available information and subject to cost-benefit constraints.
Nuclear Decommissioning Trusts and Other Investments
Nuclear Decommissioning Trusts and Other Investments
The nuclear decommissioning trusts and other investments hold debt and equity securities directly and indirectly through commingled funds. Exchange-traded debt and equity securities held directly, as well as publicly traded commingled funds, are valued using quoted market prices in actively traded markets. Non-exchange traded fixed income securities are valued based upon quotations available from brokers or pricing services.
Non-publicly traded commingled funds holding exchange-traded equity or debt securities are valued based on stated NAVs. There are no significant restrictions for these funds and investments may be redeemed with 7 to 65 days notice depending on the fund. There is no intention to sell the investment in these commingled funds.
Private equity and other assets include a diversified group of funds that are classified as NAV assets. These funds primarily invest in limited partnerships, including private equity, private real estate and private credit. Distributions are received through the liquidation of the underlying fund assets over the life of the funds. There are generally no redemption rights. The limited partner must hold the fund for its life or find a third-party buyer, which may need to be approved by the general partner. The funds are established with varied contractual durations generally in the range of 7 years to 12 years. The fund life can often be extended by several years by the general partner, and further extended with the approval of the limited partners. Unfunded commitments related to these investments totaled $157 million and $177 million as of December 31, 2023 and 2022, respectively.
Hedge funds and similar investments utilize a diversified group of strategies that attempt to capture uncorrelated sources of return. These investments include publicly traded mutual funds that are valued using quoted prices in actively traded markets, as well as insurance-linked and asset-backed securities and that are valued using quotations from broker or pricing services.
For pricing the nuclear decommissioning trusts and other investments, a primary price source is identified by asset type, class, or issue for each security. The trustee monitors prices supplied by pricing services and may use a supplemental price source or change the primary source of a given security if the trustee determines that another price source is considered preferable. The Registrants have obtained an understanding of how these prices are derived, including the nature and observability of the inputs used in deriving such prices.
Derivative Assets and Liabilities
Derivative Assets and Liabilities
Derivative assets and liabilities are comprised of physical and financial derivative contracts, including futures, forwards, options, and swaps that are both exchange-traded and over-the-counter traded contracts. Various inputs are used to value derivatives depending on the type of contract and availability of market data. Exchange-traded derivative contracts are valued using quoted prices in active markets. The Registrants consider the following criteria in determining whether a market is considered active: frequency in which pricing information is updated, variability in pricing between sources or over time, and the availability of public information. Other derivative contracts are valued based upon a variety of inputs including commodity market prices, broker quotes, interest rates, credit ratings, default rates, market-based seasonality, and basis differential factors. The Registrants monitor the prices that are supplied by brokers and pricing services and may use a supplemental price source or change the primary price source of an index if prices become unavailable or another price source is determined to be more representative of fair value. The Registrants have obtained an understanding of how these prices are derived. Additionally, the Registrants selectively corroborate the fair value of their transactions by comparison of market-based price sources. Mathematical valuation models are used for derivatives for which external market data is not readily observable, such as contracts which extend beyond the actively traded reporting period. The Registrants have established a Risk Management Committee whose responsibilities include directly or indirectly ensuring all valuation methods are applied in accordance with predefined policies. The development and maintenance of the Registrants' forward price curves has been assigned to DTE Energy's Risk Management Department, which is separate and distinct from the trading functions within DTE Energy.
Fair Value Transfer Derivatives are transferred between levels primarily due to changes in the source data used to construct price curves as a result of changes in market liquidity. Transfers in and transfers out are reflected as if they had occurred at the beginning of the period.
Derivatives, Offsetting Fair Value Amounts
Certain of DTE Energy's derivative positions are subject to netting arrangements which provide for offsetting of asset and liability positions as well as related cash collateral. Such netting arrangements generally do not have restrictions. Under such netting arrangements, DTE Energy offsets the fair value of derivative instruments with cash collateral received or paid for those contracts executed with the same counterparty, which reduces DTE Energy's Total Assets and Liabilities. Cash collateral is allocated between the fair value of derivative instruments and customer accounts receivable and payable with the same counterparty on a pro-rata basis to the extent there is exposure. Any cash collateral remaining, after the exposure is netted to zero, is reflected in Accounts receivable and Accounts payable as collateral paid or received, respectively.
DTE Energy also provides and receives collateral in the form of letters of credit which can be offset against net Derivative assets and liabilities as well as Accounts receivable and payable. DTE Energy had letters of credit of $3 million issued and outstanding at December 31, 2023 and $81 million at December 31, 2022, which could be used to offset net Derivative liabilities. Letters of credit received from third parties which could be used to offset net Derivative assets were $10 million and $82 million at December 31, 2023 and 2022, respectively. Such balances of letters of credit are excluded from the tables below and are not netted with the recognized assets and liabilities in DTE Energy's Consolidated Statements of Financial Position.
For contracts with certain clearing agents, the fair value of derivative instruments is netted against realized positions with the net balance reflected as either 1) a Derivative asset or liability or 2) an Account receivable or payable. Other than certain clearing agents, Accounts receivable and Accounts payable that are subject to netting arrangements have not been offset against the fair value of Derivative assets and liabilities.
Derivatives, Methods of Accounting
Revenues and energy costs related to trading contracts are presented on a net basis in DTE Energy's Consolidated Statements of Operations. Commodity derivatives used for trading purposes, and financial non-trading commodity derivatives, are accounted for using the MTM method with unrealized and realized gains and losses recorded in Operating Revenues — Non-utility operations. Non-trading physical commodity sale and purchase derivative contracts are generally accounted for using the MTM method with unrealized and realized gains and losses for sales recorded in Operating Revenues — Non-utility operations and purchases recorded in Fuel, purchased power, gas, and other — non-utility.
Lessee
Lessee
Leases at DTE Energy are primarily comprised of various forms of equipment, computer hardware, coal railcars, production facilities, buildings, and certain easement leases with terms ranging from approximately 2 to 40 years. Leases at DTE Electric are primarily comprised of various forms of equipment, computer hardware, coal railcars, and certain easement leases with terms ranging from approximately 2 to 40 years.
A lease is deemed to exist when the Registrants have the right to control the use of identified property, plant or equipment, as conveyed through a contract, for a certain period of time and consideration paid. The right to control is deemed to occur when the Registrants have the right to obtain substantially all of the economic benefits of the identified assets and the right to direct the use of such assets.
Lease liabilities are determined utilizing a discount rate to determine the present values of lease payments. Topic 842 requires the use of the rate implicit in the lease when it is readily determinable. When the rate implicit in the lease is not readily determinable, the incremental borrowing rate is used. The Registrants have determined their respective incremental borrowing rates based upon the rate of interest that would have been paid on a collateralized basis over similar tenors to that of the leases. The incremental borrowing rates for DTE Electric and DTE Gas have been determined utilizing respective secured borrowing rates for first mortgage bonds with like tenors of remaining lease terms. Incremental borrowing rates for non-utility entities have been determined utilizing an implied secured borrowing rate based upon an unsecured rate for a similar tenor of remaining lease terms, which is then adjusted for the estimated impact of collateral.
Certain leases of the Registrants contain escalation clauses whereby the payments are adjusted for consumer price or labor indices. The Registrants have leases with non-index based escalation clauses for fixed dollar or percentage increases. DTE Energy also has leases with variable payments based upon usage of, or revenues associated with, the leased assets. DTE Electric also has leases with variable payments based upon the usage of the leased assets.
Certain leases of easements and coal railcars contain provisions whereby the Registrants have the option to terminate the lease agreement by giving notice of such termination during the time frames specified in the respective lease. The Registrants have considered such provisions in the determination of the lease term when it is reasonably certain that the lease would be terminated.
The Registrants have certain leases which contain purchase options. Based upon the nature of the leased property and terms of the purchase options, the Registrants have determined it is not reasonably certain that such purchase options will be utilized. Thus, the impact of the purchase options has not been included in the determination of right-of-use assets and lease liabilities for the subject leases.
The Registrants have certain leases which contain renewal options. Where the renewal options were deemed reasonably certain to occur, the impacts of such options were included in the determination of the right of use assets and lease liabilities.
The Registrants have agreements with lease and non-lease components, which are generally accounted for separately. Consideration in a lease is allocated between lease and non-lease components based upon the estimated relative standalone prices. The Registrants have certain coal railcar leases for which non-lease and lease components are accounted for as a single lease component, as permitted under Topic 842.
Lessor
Lessor
DTE Energy leases a portion of its pipeline system through a finance lease contract that has been renewed through 2025, with additional renewal options reasonably certain to be exercised through 2040. DTE Energy also leases certain energy infrastructure assets for large industrial customers under separate long-term agreements through 2040 and 2042, respectively. For the agreement ending in 2040, the assets will transfer to the customer at the end of the term. For the agreement scheduled to end in 2042, the customer will have the option to extend the term in 5 year increments and may purchase the assets during the extension period. DTE Energy has accounted for a portion of these agreements as finance lease arrangements.
DTE Energy also leases various assets under operating leases for a pipeline, energy facilities and related equipment. Such leases are comprised of both fixed payments and variable payments which are contingent on volumes, with terms ranging from 2 to 24 years. Generally, the operating leases do not have renewal provisions or options to purchase the assets at the end of the lease. The operating leases generally do not have termination for convenience provisions. Termination may be allowed under specific circumstances stated in the lease contract, such as under an event of default.
Certain of the finance and operating leases have lease terms that extend to the end of the estimated economic life of the leased assets, thereby resulting in no residual value. Any remaining residual values under the finance and operating leases are expected to be recovered through rates, renewals or new lease contracts. Residual values have been determined using the estimated economic life of the leased assets. The finance and operating leases do not contain residual value guarantees.
Certain of the operating leases have both lease and non-lease components. The lease and non-lease components are allocated based upon estimated relative standalone selling prices.
A lease is deemed to exist when the Registrants have provided other parties with the right to control the use of identified property, plant or equipment, as conveyed through a contract, for a certain period of time and consideration received. The right to control is deemed to occur when the Registrants have provided other parties with the right to obtain substantially all of the economic benefits of the identified assets and the right to direct the use of such assets.
Stock-Based Compensation
DTE Energy records compensation expense at fair value over the vesting period for all awards it grants.
v3.24.0.1
Organization and Basis of Presentation (Tables)
 12 Months Ended
Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Variable Interest Entities
The table below summarizes the major Consolidated Statements of Financial Position items for consolidated VIEs as of December 31, 2023 and 2022. All assets and liabilities of a consolidated VIE are presented where it has been determined that a consolidated VIE has either (1) assets that can be used only to settle obligations of the VIE or (2) liabilities for which creditors do not have recourse to the general credit of the primary beneficiary. Assets and liabilities of the DTE Securitization entities have been aggregated due to their similar nature and are separately stated in the table below, comprising the entirety of the DTE Electric amounts. For all other VIEs, assets and liabilities are also aggregated due to their similar nature and presented together with the DTE Securitization entities in the DTE Energy amounts below. VIEs, in which DTE Energy holds a majority voting interest and is the primary beneficiary, that meet the definition of a business and whose assets can be used for purposes other than the settlement of the VIE's obligations have been excluded from the table.
During 2023, a consolidated VIE of DTE Vantage entered into a contract that restricts certain assets of the VIE to be used only to settle the VIE's obligations. As a result, the assets and liabilities of the VIE, which primarily include receivables and payables recognized in 2023, no longer meet the exclusion criteria above. Accordingly, these assets and liabilities have been added to the DTE Energy amounts in the table below.
Amounts for the Registrants' consolidated VIEs are as follows:
December 31,
20232022
DTE EnergyDTE ElectricDTE EnergyDTE Electric
(In millions)
ASSETS
Cash and cash equivalents$7 $— $14 $— 
Restricted cash25 17 9 9 
Accounts receivable85 6 6 3 
Securitized regulatory assets758 758 206 206 
Notes receivable183 — 81 — 
Other current and long-term assets4 1 8 — 
$1,062 $782 $324 $218 
LIABILITIES
Accounts payable$59 $— $3 $— 
Short-term borrowings— — 81 — 
Securitization bonds(a)
769 769 211 211 
Other current and long-term liabilities26 14 11 9 
$854 $783 $306 $220 
_______________________________________
(a)Includes $64 million and $39 million reported in Current portion of long-term debt on the Registrants' Consolidated Statements of Financial Position for the periods ended December 31, 2023 and December 31, 2022, respectively.
Summary of Amounts For Nonconsolidated Variable Interest Entities
Amounts for DTE Energy's non-consolidated VIEs are as follows:
December 31,
20232022
(In millions)
Investments in equity method investees$112 $137 
Notes receivable$15 $15 
Future funding commitments$1 $2 
v3.24.0.1
Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2023
Accounting Policies [Abstract]  
Schedule of Other Income
The following is a summary of DTE Energy's Other income:
202320222021
(In millions)
Allowance for equity funds used during construction$42 $29 $27 
Contract services26 28 27 
Investment income(a)
17 3 14 
Equity earnings (losses) of equity method investees3 (14)38 
Income from REF entities— — 141 
Other14 12 7 
$102 $58 $254 
_______________________________________
(a)Investment losses are recorded separately to Other expenses on the Consolidated Statements of Operations.
The following is a summary of DTE Electric's Other income:
202320222021
(In millions)
Allowance for equity funds used during construction$40 $26 $25 
Contract services25 27 27 
Investment income(a)
11 3 10 
Other11 9 9 
$87 $65 $71 
_______________________________________
(a)Investment losses are recorded separately to Other expenses on the Consolidated Statements of Operations.
Schedule of Accumulated Other Comprehensive Income (Loss)
The following table summarizes the changes in DTE Energy's Accumulated other comprehensive income (loss) by component(a) for the years ended December 31, 2023 and 2022:
Net Unrealized Gain (Loss) on Derivatives
Benefit Obligations(b)
Foreign Currency TranslationTotal
(In millions)
Balance, December 31, 2021$(11)$(101)$— $(112)
Other comprehensive income before reclassifications5 — — 5 
Amounts reclassified from Accumulated other comprehensive loss2 43 — 45 
Net current period Other comprehensive income7 43 — 50 
Balance, December 31, 2022$(4)$(58)$— $(62)
Other comprehensive income (loss) before reclassifications(14)3 2 (9)
Amounts reclassified from Accumulated other comprehensive loss1 3 — 4 
Net current period Other comprehensive income (loss)(13)6 2 (5)
Balance, December 31, 2023$(17)$(52)$2 $(67)
______________________________________
(a)All amounts are net of tax, except for Foreign currency translation.
(b)Benefit obligations activity includes changes in actuarial (gain) loss and prior service cost in DTE Energy's pension and other postretirement benefit plans. Refer to Note 20 to the Consolidated Financial Statements, "Retirement Benefits and Trusteed Assets", for details regarding this activity. For 2022, the change in benefit obligations due to actuarial (gain) loss increased from prior years, primarily due to higher discount rates and other plan changes.
Schedule of Financing Receivables Classified by Internal Grade of Credit Risk
The following represents the Registrants' financing receivables by year of origination, classified by internal grade of credit risk, including current year-to-date gross write-offs, if any. The related credit quality indicators and risk ratings utilized to develop the internal grades have been updated through December 31, 2023.
DTE EnergyDTE Electric
Year of origination
202320222021 and priorTotal2023 and prior
(In millions)
Notes receivable
Internal grade 1$19 $— $4 $23 $18 
Internal grade 223 112 17 152 1 
Total notes receivable(a)
$42 $112 $21 $175 $19 
Net investment in leases
Internal grade 1$— $— $37 $37 $— 
Internal grade 2— 66 184 250 — 
Total net investment in leases(a)
$— $66 $221 $287 $— 
_______________________________________
(a)For DTE Energy and DTE Electric, the current portion is included in Current Assets — Other on the respective Consolidated Statements of Financial Position. For DTE Electric, the noncurrent portion is included in Other Assets — Other.
Schedule of Roll-Forward of Activity for Financing Receivables Credit Loss Reserves
The following tables present a roll-forward of the activity for the Registrants' financing receivables credit loss reserves:
DTE EnergyDTE Electric
Trade accounts receivableOther receivablesTotalTrade and other accounts receivable
(In millions)
Balance at December 31, 2020$101 $3 $104 $57 
Current period provision53 1 54 36 
Write-offs charged against allowance(126)(1)(127)(77)
Recoveries of amounts previously written off61 — 61 38 
Balance at December 31, 2021$89 $3 $92 $54 
Current period provision49 — 49 33 
Write-offs charged against allowance(105)(2)(107)(66)
Recoveries of amounts previously written off45 — 45 28 
Balance at December 31, 2022$78 $1 $79 $49 
Current period provision52 — 52 36 
Write-offs charged against allowance(112)— (112)(72)
Recoveries of amounts previously written off44 — 44 28 
Balance at December 31, 2023$62 $1 $63 $41 
Schedule of Uncollectible Expense
Uncollectible expense for the Registrants is primarily comprised of the current period provision for allowance for doubtful accounts and is summarized as follows:
Year Ended December 31,
202320222021
(In millions)
DTE Energy$55 $55 $55 
DTE Electric$38 $35 $36 
Schedule of Finite-Lived Intangible Assets
The Registrants have certain Intangible assets as shown below:
December 31, 2023December 31, 2022
Useful LivesGross Carrying ValueAccumulated AmortizationNet Carrying ValueGross Carrying ValueAccumulated AmortizationNet Carrying Value
(In millions)
Intangible assets subject to amortization
Contract intangibles
12 to 26 years
$246 $(103)$143 $246 $(88)$158 
Carbon offsets10 — 10 6 — 6 
Renewable energy credits2 — 2 2 — 2 
Other1 — 1 — — — 
Intangible assets not subject to amortization(a)
13 — 13 8 — 8 
DTE Energy Long-term intangible assets$259 $(103)$156 $254 $(88)$166 
______________________________________
(a)Amounts are charged to expense, using average cost, as they are consumed in the operation of the business. DTE Electric intangible assets include the Renewable energy credits above, which are included in Other Assets — Other on the DTE Electric Consolidated Statements of Financial Position.
Schedule of Indefinite-Lived Intangible Assets
The Registrants have certain Intangible assets as shown below:
December 31, 2023December 31, 2022
Useful LivesGross Carrying ValueAccumulated AmortizationNet Carrying ValueGross Carrying ValueAccumulated AmortizationNet Carrying Value
(In millions)
Intangible assets subject to amortization
Contract intangibles
12 to 26 years
$246 $(103)$143 $246 $(88)$158 
Carbon offsets10 — 10 6 — 6 
Renewable energy credits2 — 2 2 — 2 
Other1 — 1 — — — 
Intangible assets not subject to amortization(a)
13 — 13 8 — 8 
DTE Energy Long-term intangible assets$259 $(103)$156 $254 $(88)$166 
______________________________________
(a)Amounts are charged to expense, using average cost, as they are consumed in the operation of the business. DTE Electric intangible assets include the Renewable energy credits above, which are included in Other Assets — Other on the DTE Electric Consolidated Statements of Financial Position.
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense
The following table summarizes DTE Energy's estimated contract intangible amortization expense expected to be recognized during each year through 2028:
20242025202620272028
(In millions)
Estimated amortization expense$16 $16 $14 $14 $14 
Schedule of Capitalized Cloud Computing Costs
The following balances for cloud computing costs relate to DTE Energy:
Year Ended December 31,
202320222021
(In millions)
Amortization expense of capitalized cloud computing costs$10 $4 $1 
Gross value of capitalized cloud computing costs$56 $42 
Accumulated amortization of capitalized cloud computing costs$15 $5 
The following balances for cloud computing costs relate to DTE Electric:
Year Ended December 31,
202320222021
(In millions)
Amortization expense of capitalized cloud computing costs$8 $3 $1 
Gross value of capitalized cloud computing costs$44 $33 
Accumulated amortization of capitalized cloud computing costs$12 $4 
Schedule of Accounting Policies
See the following notes for other accounting policies impacting the Registrants’ Consolidated Financial Statements:
NoteTitle
5Revenue
6Property, Plant, and Equipment
8Asset Retirement Obligations
9Regulatory Matters
10Income Taxes
12Fair Value
13Financial and Other Derivative Instruments
17Leases
20Retirement Benefits and Trusteed Assets
21Stock-Based Compensation
22Segment and Related Information
23Related Party Transactions
v3.24.0.1
Discontinued Operations (Tables)
 12 Months Ended
Dec. 31, 2023
Discontinued Operations and Disposal Groups [Abstract]  
Disposal Groups, Including Discontinued Operations The table below reflects the financial results of DT Midstream that are included in discontinued operations within the Consolidated Statements of Operations. These results include the impact of tax-related adjustments and all transaction costs related to the separation. General corporate overhead costs have been excluded and no portion of corporate interest costs were allocated to discontinued operations.
Year Ended December 31,
2021
Operating Revenues — Non-utility operations$405 
Operating Expenses
Cost of gas and other — non-utility15 
Operation and maintenance(a)
123 
Depreciation and amortization82 
Taxes other than income13 
Asset (gains) losses and impairments, net17 
250 
Operating Income155 
Other (Income) and Deductions
Interest expense50 
Interest income(4)
Other income(62)
(16)
Income from Discontinued Operations Before Income Taxes171 
Income Tax Expense54 
Net Income from Discontinued Operations, Net of Taxes117 
Less: Net Income Attributable to Noncontrolling Interests6 
Net Income from Discontinued Operations$111 
_______________________________________
(a)Includes separation transaction costs of $59 million for various legal, accounting and other professional services fees.
The following table is a summary of significant non-cash items, capital expenditures, and significant financing activities of discontinued operations included in DTE Energy's Consolidated Statements of Cash Flows:
Year Ended December 31,
2021
(In millions)
Operating Activities
Depreciation and amortization$82 
Deferred income taxes53 
Equity earnings of equity method investees(59)
Asset (gains) losses and impairments, net19 
Investing Activities
Plant and equipment expenditures — non-utility(60)
v3.24.0.1
Revenue (Tables)
 12 Months Ended
Dec. 31, 2023
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue
The following is a summary of revenues disaggregated by segment for DTE Energy:
202320222021
(In millions)
Electric(a)
Residential$2,847 $2,911 $2,926 
Commercial2,114 1,958 1,908 
Industrial732 659 628 
Other(b)
125 884 359 
Total Electric operating revenues$5,818 $6,412 $5,821 
Gas
Gas sales$1,324 $1,442 $1,058 
End User Transportation250 264 233 
Intermediate Transportation85 81 82 
Other(b)
89 137 180 
Total Gas operating revenues$1,748 $1,924 $1,553 
Other segment operating revenues
DTE Vantage$809 $848 $1,482 
Energy Trading$4,612 $10,308 $6,831 
_______________________________________
(a)Revenues generally represent those of DTE Electric, except $14 million, $15 million, and $12 million of Other revenues related to DTE Sustainable Generation for the years ended December 31, 2023, 2022, and 2021, respectively.
(b)Includes revenue adjustments related to various regulatory mechanisms, including the PSCR at the Electric segment and GCR at the Gas segment. Revenues related to these mechanisms may vary based on changes in the cost of fuel, purchased power, and gas.
Revenues included the following which were outside the scope of Topic 606:
202320222021
(In millions)
Electric — Alternative Revenue Programs$36 $35 $36 
Electric — Other revenues$22 $19 $19 
Gas — Alternative Revenue Programs$16 $9 $10 
Gas — Other revenues$8 $7 $6 
DTE Vantage — Leases$59 $82 $103 
Energy Trading — Derivatives$3,436 $8,489 $5,603 
Summary of Deferred Revenue Activity
The following is a summary of deferred revenue activity for DTE Energy:
20232022
(In millions)
Beginning Balance, January 1$94 $78 
Increases due to cash received or receivable, excluding amounts recognized as revenue during the period103 91 
Revenue recognized that was included in the deferred revenue balance at the beginning of the period(91)(75)
Ending Balance, December 31$106 $94 
Deferred Revenue Amounts Expected to be Recognized as Revenue in Future Periods
The following table represents deferred revenue amounts for DTE Energy that are expected to be recognized as revenue in future periods:
DTE Energy
(In millions)
2024$103 
20251 
20261 
20271 
2028— 
2029 and thereafter— 
$106 
The Registrants expect to recognize revenue for the following amounts related to fixed consideration associated with remaining performance obligations in each of the future periods noted:
DTE EnergyDTE Electric
(In millions)
2024$245 $7 
2025191 — 
2026109 — 
202776 — 
202858 — 
2029 and thereafter320 1 
$999 $8 
v3.24.0.1
Property, Plant, and Equipment (Tables)
 12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
PP&E by Classification, Summary of Depreciation and Amortization
The following is a summary of Property, plant, and equipment by classification as of December 31:
20232022
Property, plant, and equipment(In millions)
DTE Electric
Zero carbon generation
Nuclear$3,812 $3,684 
Renewables3,074 2,567 
Fossil and other generation4,157 8,789 
Distribution13,673 12,502 
Other3,220 3,049 
Total DTE Electric27,936 30,591 
DTE Gas
Distribution5,838 5,376 
Storage578 607 
Transmission and other1,613 1,534 
Total DTE Gas8,029 7,517 
DTE Vantage1,075 1,059 
Other234 179 
Total DTE Energy$37,274 $39,346 
Accumulated depreciation and amortization
DTE Electric
Zero carbon generation
Nuclear$(479)$(428)
Renewables(524)(426)
Fossil and other generation(1,393)(3,352)
Distribution(3,205)(3,040)
Other(969)(849)
Total DTE Electric(6,570)(8,095)
DTE Gas
Distribution(1,365)(1,330)
Storage(132)(163)
Transmission and other(493)(461)
Total DTE Gas(1,990)(1,954)
DTE Vantage(479)(469)
Other(66)(61)
Total DTE Energy$(9,105)$(10,579)
Net DTE Energy Property, plant, and equipment$28,169 $28,767 
Net DTE Electric Property, plant, and equipment$21,366 $22,496 
The following is a summary of Depreciation and amortization expense for DTE Energy:
202320222021
(In millions)
Property, plant, and equipment$1,239 $1,148 $1,095 
Regulatory assets and liabilities344 297 259 
Intangible assets15 16 16 
Other8 7 7 
$1,606 $1,468 $1,377 
The following is a summary of Depreciation and amortization expense for DTE Electric:
202320222021
(In millions)
Property, plant, and equipment$1,029 $951 $890 
Regulatory assets and liabilities292 248 214 
Other5 5 5 
$1,326 $1,204 $1,109 
Schedule of AFUDC and Capitalized Interest Rates
The AFUDC and capitalized interest rates were as follows for the years ended December 31:
202320222021
DTE Electric AFUDC5.53 %5.46 %5.46 %
DTE Gas AFUDC5.41 %5.41 %5.55 %
Non-regulated businesses capitalized interest3.00 %3.00 %3.30 %
Schedule of AFUDC and Interest Capitalized
The following is a summary of AFUDC and interest capitalized for the years ended December 31:
202320222021
DTE Energy(In millions)
Allowance for debt funds used during construction and interest capitalized$20 $13 $12 
Allowance for equity funds used during construction42 29 27 
Total$62 $42 $39 
202320222021
DTE Electric(In millions)
Allowance for debt funds used during construction$15 $11 $11 
Allowance for equity funds used during construction40 26 25 
Total$55 $37 $36 
Schedule of Utility Property, Plant, and Equipment The average estimated useful life for each major class of utility Property, plant, and equipment as of December 31, 2023 follows:
Estimated Useful Lives in Years
UtilityGenerationDistributionStorage
DTE Electric3438N/A
DTE GasN/A4958
Schedule of Capitalized Software
The following balances for capitalized software relate to DTE Energy:
Year Ended December 31,
202320222021
(In millions)
Amortization expense of capitalized software$189 $159 $145 
Gross carrying value of capitalized software$940 $796 
Accumulated amortization of capitalized software$427 $406 
The following balances for capitalized software relate to DTE Electric:
Year Ended December 31,
202320222021
(In millions)
Amortization expense of capitalized software$172 $146 $132 
Gross carrying value of capitalized software$849 $692 
Accumulated amortization of capitalized software$369 $343 
v3.24.0.1
Jointly-Owned Utility Plant (Tables)
 12 Months Ended
Dec. 31, 2023
Jointly Owned Utility Plant, Net Ownership Amount [Abstract]  
Schedule of Jointly-Owned Utility Plants
DTE Electric's ownership information of the two utility plants as of December 31, 2023 was as follows:
Belle RiverLudington
Hydroelectric
Pumped Storage
In-service date1984-19851973
Total plant capacity1,270 MW2,290 MW
Ownership interest81%49%
Investment in Property, plant, and equipment (in millions)$2,000 $652 
Accumulated depreciation (in millions)$1,091 $149 
v3.24.0.1
Asset Retirement Obligations (Tables)
 12 Months Ended
Dec. 31, 2023
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Change in Asset Retirement Obligations
Changes to Asset retirement obligations for 2023, 2022, and 2021 were as follows:
202320222021
DTE Energy(In millions)
Asset retirement obligations at January 1$3,460 $3,162 $2,829 
Accretion198 184 167 
Liabilities incurred7 24 28 
Liabilities settled(96)(7)(30)
Revision in estimated cash flows(13)97 168 
Asset retirement obligations at December 31$3,556 $3,460 $3,162 
202320222021
DTE Electric(In millions)
Asset retirement obligations at January 1$3,221 $2,932 $2,607 
Accretion185 172 155 
Liabilities incurred4 22 29 
Liabilities settled(81)(2)(27)
Revision in estimated cash flows(3)97 168 
Asset retirement obligations at December 31$3,326 $3,221 $2,932 
v3.24.0.1
Regulatory Matters (Tables)
 12 Months Ended
Dec. 31, 2023
Regulatory Assets and Liabilities Disclosure [Abstract]  
Schedule of Regulatory Assets
The following are balances and a brief description of the Registrants' Regulatory assets and liabilities at December 31:
DTE EnergyDTE Electric
2023202220232022
Assets(In millions)
Recoverable undepreciated costs on retiring plants$2,736 $594 $2,736 $594 
Recoverable pension and other postretirement costs
Pension1,421 1,362 1,045 997 
Other postretirement costs163 172 67 60 
Fermi 2 asset retirement obligation952 972 952 972 
Removal costs asset223 19 223 19 
Enhanced tree trimming program deferred costs157 90 157 90 
Recoverable Michigan income taxes133 148 110 121 
Energy Waste Reduction incentive90 88 72 71 
Recoverable income taxes related to AFUDC equity89 76 80 68 
Accrued PSCR/GCR revenue55 450 55 421 
Deferred environmental costs46 46 — — 
Unamortized loss on reacquired debt41 45 31 34 
Customer360 deferred costs38 42 38 42 
Advanced distribution management system costs18 14 18 14 
Deferred pension costs16 63 10 41 
Nuclear performance evaluation and review committee tracker6 26 6 26 
Other133 129 95 70 
6,317 4,336 5,695 3,640 
Less amount included in Current Assets(108)(450)(99)(421)
$6,209 $3,886 $5,596 $3,219 
Securitized regulatory assets$758 $206 $758 $206 
Schedule of Regulatory Liabilities
DTE EnergyDTE Electric
2023202220232022
Liabilities(In millions)
Refundable federal income taxes$1,823 $1,908 $1,463 $1,534 
Removal costs liability342 371 — — 
Negative other postretirement offset210 191 142 128 
Non-service pension and other postretirement costs199 154 84 73 
Accrued GCR refund21 — — — 
Renewable energy7 21 7 21 
Other72 62 63 55 
2,674 2,707 1,759 1,811 
Less amount included in Current Liabilities(71)(34)(49)(33)
$2,603 $2,673 $1,710 $1,778 
v3.24.0.1
Income Taxes (Tables)
 12 Months Ended
Dec. 31, 2023
Income Tax Disclosure [Abstract]  
Schedule of Effective Income Tax Rate Reconciliation
The Registrants' total Income Tax Expense varied from the statutory federal income tax rate for the following reasons:
202320222021
DTE Energy(In millions)
Income Before Income Taxes$1,566 $1,112 $656 
Income tax expense at 21% statutory rate$329 $234 $138 
Production tax credits(91)(91)(138)
TCJA regulatory liability amortization(63)(155)(103)
Investment tax credits(44)(1)(3)
Enactment of state income tax legislation, net of federal benefit(1)— 8 
State deferred tax remeasurement due to separation of DT Midstream, net of federal benefit— — (85)
Valuation allowance on charitable contribution carryforwards— 9 18 
State and local income taxes, excluding items above, net of federal benefit59 42 30 
Other, net(20)(9)5 
Income Tax Expense (Benefit)$169 $29 $(130)
Effective income tax rate10.8 %2.6 %(19.9)%
202320222021
DTE Electric(In millions)
Income Before Income Taxes$850 $981 $970 
Income tax expense at 21% statutory rate$179 $206 $204 
Production tax credits(79)(83)(70)
TCJA regulatory liability amortization(53)(145)(73)
State and local income taxes, excluding items above, net of federal benefit45 56 54 
Other, net(14)(8)(11)
Income Tax Expense$78 $26 $104 
Effective income tax rate9.2 %2.7 %10.7 %
Schedule of Components of Income Tax Expense (Benefit)
Components of the Registrants' Income Tax Expense were as follows:
202320222021
DTE Energy(In millions)
Current income tax benefit
Federal$(10)$(13)$(33)
State and other income tax(2)(2)(12)
Total current income taxes(12)(15)(45)
Deferred income tax expense (benefit)
Federal103 (13)(42)
State and other income tax78 57 (43)
Total deferred income taxes181 44 (85)
$169 $29 $(130)
202320222021
DTE Electric(In millions)
Current income tax expense (benefit)
Federal$1 $1 $(11)
State and other income tax(5)— (7)
Total current income taxes(4)1 (18)
Deferred income tax expense (benefit)
Federal19 (46)47 
State and other income tax63 71 75 
Total deferred income taxes82 25 122 
$78 $26 $104 
Schedule of Deferred Tax Assets and Liabilities
The Registrants' deferred tax assets (liabilities) were comprised of the following at December 31:
DTE EnergyDTE Electric
2023202220232022
(In millions)
Property, plant, and equipment$(3,423)$(3,897)$(2,693)$(3,188)
Regulatory assets and liabilities(1,158)(493)(1,314)(589)
Tax credit carryforwards1,519 1,378 572 487 
Pension and benefits77 111 69 103 
Federal net operating loss carryforward202 266 71 58 
State and local net operating loss carryforwards76 97 49 38 
Investments in equity method investees(33)65 — — 
Other130 137 137 145 
(2,610)(2,336)(3,109)(2,946)
Less: Valuation allowance(39)(58)— — 
Long-term deferred income tax liabilities$(2,649)$(2,394)$(3,109)$(2,946)
Deferred income tax assets$2,415 $2,317 $1,202 $1,081 
Deferred income tax liabilities(5,064)(4,711)(4,311)(4,027)
$(2,649)$(2,394)$(3,109)$(2,946)
Schedule of Unrecognized Tax Benefits Roll Forward
A reconciliation of the beginning and ending amount of unrecognized tax benefits for the Registrants is as follows:
202320222021
DTE Energy(In millions)
Balance at January 1$13 $10 $10 
Additions for tax positions of prior years2 5 — 
Reductions for tax positions of prior years(5)(2)— 
Settlements(10)— — 
Balance at December 31$— $13 $10 
202320222021
DTE Electric(In millions)
Balance at January 1$13 $13 $13 
Settlements(13)— — 
Balance at December 31$— $13 $13 
v3.24.0.1
Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2023
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following is a reconciliation of DTE Energy's basic and diluted income per share calculation for the years ended December 31:
202320222021
(In millions, except per share amounts)
Basic Earnings per Share
Net Income Attributable to DTE Energy Company — continuing operations$1,397 $1,083 $796 
Less: Allocation of earnings to net restricted stock awards3 3 2 
$1,394 $1,080 $794 
Net Income Attributable to DTE Energy Company — discontinued operations— — 111 
Net income available to common shareholders — basic$1,394 $1,080 $905 
Average number of common shares outstanding — basic206 195 193 
Income from continuing operations$6.77 $5.53 $4.11 
Income from discontinued operations— — 0.57 
Basic Earnings per Common Share$6.77 $5.53 $4.68 
Diluted Earnings per Share
Net Income Attributable to DTE Energy Company — continuing operations$1,397 $1,083 $796 
Less: Allocation of earnings to net restricted stock awards3 3 2 
$1,394 $1,080 $794 
Net Income Attributable to DTE Energy Company — discontinued operations— — 111 
Net income available to common shareholders — diluted$1,394 $1,080 $905 
Average number of common shares outstanding — basic206 195 193 
    Average performance share awards— 1 1 
Average number of common shares outstanding — diluted206 196 194 
Income from continuing operations$6.76 $5.52 $4.10 
Income from discontinued operations— — 0.57 
Diluted Earnings per Common Share(a)
$6.76 $5.52 $4.67 
_______________________________________
(a)Equity units excluded from the calculation of diluted EPS were approximately 11.5 million for the year ended December 31, 2021, as the dilutive stock price threshold was not met. These equity units were settled in November 2022 resulting in the issuance of common stock.
v3.24.0.1
Fair Value (Tables)
 12 Months Ended
Dec. 31, 2023
Fair Value Disclosures [Abstract]  
Assets and Liabilities Recorded at Fair Value on a Recurring Basis
The following table presents assets and liabilities for DTE Energy measured and recorded at fair value on a recurring basis:
December 31, 2023December 31, 2022
Level 1Level
 2		Level 3
Other
(a)
Netting
(b)
Net BalanceLevel 1Level
 2		Level 3
Other
(a)
Netting
(b)
Net Balance
(In millions)
Assets
Cash equivalents(c)
$13 $— $— $— $— $13 $10 $— $— $— $— $10 
Nuclear decommissioning trusts
Equity securities776 — — 145 — 921 701 — — 138 — 839 
Fixed income securities127 371 — 92 — 590 115 359 — 89 — 563 
Private equity and other— — — 312 — 312 — — — 262 — 262 
Hedge funds and similar investments119 65 — — — 184 78 41 — — — 119 
Cash equivalents34 — — — — 34 42 — — — — 42 
Other investments(d)
Equity securities58 — — — — 58 56 — — — — 56 
Fixed income securities7 — — — — 7 7 — — — — 7 
Cash equivalents37 — — — — 37 72 — — — — 72 
Derivative assets
Commodity contracts(e)
Natural gas241 217 179 — (416)221 426 183 135 — (649)95 
Electricity— 258 163 — (243)178 — 720 243 — (643)320 
Environmental & Other— 131 8 — (132)7 — 201 12 — (196)17 
Other contracts— — — — — — — 2 — — (1)1 
Total derivative assets241 606 350 — (791)406 426 1,106 390 — (1,489)433 
Total$1,412 $1,042 $350 $549 $(791)$2,562 $1,507 $1,506 $390 $489 $(1,489)$2,403 
Liabilities
Derivative liabilities
Commodity contracts(e)
Natural gas$(291)$(167)$(157)$— $429 $(186)$(297)$(331)$(390)$— $645 $(373)
Electricity— (272)(116)— 297 (91)— (659)(276)— 665 (270)
Environmental & Other— (148)(2)— 137 (13)— (213)(1)— 201 (13)
Other contracts— (19)— — — (19)— (2)— — 1 (1)
Total$(291)$(606)$(275)$— $863 $(309)$(297)$(1,205)$(667)$— $1,512 $(657)
Net Assets (Liabilities) at end of period$1,121 $436 $75 $549 $72 $2,253 $1,210 $301 $(277)$489 $23 $1,746 
Assets
Current$215 $461 $247 $— $(613)$310 $360 $881 $286 $— $(1,189)$338 
Noncurrent1,197 581 103 549 (178)2,252 1,147 625 104 489 (300)2,065 
Total Assets$1,412 $1,042 $350 $549 $(791)$2,562 $1,507 $1,506 $390 $489 $(1,489)$2,403 
Liabilities
Current$(240)$(462)$(145)$— $670 $(177)$(273)$(876)$(386)$— $1,193 $(342)
Noncurrent(51)(144)(130)— 193 (132)(24)(329)(281)— 319 (315)
Total Liabilities$(291)$(606)$(275)$— $863 $(309)$(297)$(1,205)$(667)$— $1,512 $(657)
Net Assets (Liabilities) at end of period$1,121 $436 $75 $549 $72 $2,253 $1,210 $301 $(277)$489 $23 $1,746 
_______________________________________
(a)Amounts represent assets valued at NAV as a practical expedient for fair value.
(b)Amounts represent the impact of master netting agreements that allow DTE Energy to net gain and loss positions and cash collateral held or placed with the same counterparties.
(c)Amounts include $11 million and $10 million of cash equivalents recorded in Restricted cash on DTE Energy's Consolidated Statements of Financial Position at December 31, 2023 and December 31, 2022, respectively. All other amounts are included in Cash and cash equivalents on DTE Energy's Consolidated Statements of Financial Position.
(d)Excludes cash surrender value of life insurance investments and certain securities classified as held-to-maturity that are recorded at amortized cost and not material to the consolidated financial statements.
(e)For contracts with a clearing agent, DTE Energy nets all activity across commodities. This can result in some individual commodities having a contra balance.
The following table presents assets for DTE Electric measured and recorded at fair value on a recurring basis as of:
December 31, 2023December 31, 2022
Level 1Level 2Level 3
Other(a)
Net Balance Level 1Level 2Level 3
Other(a)
Net Balance
(In millions)
Assets
Cash equivalents(b)
$11 $— $— $— $11 $9 $— $— $— $9 
Nuclear decommissioning trusts
Equity securities776 — — 145 921 701 — — 138 839 
Fixed income securities127 371 — 92 590 115 359 — 89 563 
Private equity and other— — — 312 312 — — — 262 262 
Hedge funds and similar investments119 65 — — 184 78 41 — — 119 
Cash equivalents34 — — — 34 42 — — — 42 
Other investments
Equity securities21 — — — 21 16 — — — 16 
Cash equivalents11 — — — 11 11 — — — 11 
Derivative assets — FTRs— — 7 — 7 — — 11 — 11 
Total$1,099 $436 $7 $549 $2,091 $972 $400 $11 $489 $1,872 
Assets
Current$11 $— $7 $— $18 $9 $— $11 $— $20 
Noncurrent1,088 436 — 549 2,073 963 400 — 489 1,852 
Total Assets$1,099 $436 $7 $549 $2,091 $972 $400 $11 $489 $1,872 
_______________________________________
(a)Amounts represent assets valued at NAV as a practical expedient for fair value.
(b)Cash equivalents of $11 million and $9 million are included in Restricted cash on DTE Electric's Consolidated Statements of Financial Position at December 31, 2023 and December 31, 2022, respectively.
Reconciliation of Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis
The following table presents the fair value reconciliation of Level 3 assets and liabilities measured at fair value on a recurring basis for DTE Energy:
Year Ended December 31, 2023Year Ended December 31, 2022
Natural GasElectricityOtherTotalNatural GasElectricityOtherTotal
(In millions)
Net Assets (Liabilities) as of January 1$(255)$(33)$11 $(277)$(179)$(45)$9 $(215)
Transfers from Level 3 into Level 217 — — 17 5 1 — 6 
Total gains (losses)
Included in earnings(a)
182 198 (1)379 (410)97 2 (311)
Recorded in Regulatory liabilities— — 9 9 — — 21 21 
Purchases, issuances, and settlements:
Settlements78 (118)(13)(53)329 (86)(21)222 
Net Assets (Liabilities) as of December 31$22 $47 $6 $75 $(255)$(33)$11 $(277)
Total gains (losses) included in Net Income attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31(a)
$85 $151 $(122)$114 $(215)$50 $(111)$(276)
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31$— $— $7 $7 $— $— $11 $11 
_______________________________________
(a)Amounts are reflected in Operating Revenues — Non-utility operations and Fuel, purchased power, gas, and other — non-utility in DTE Energy's Consolidated Statements of Operations.
The following table presents the fair value reconciliation of Level 3 assets and liabilities measured at fair value on a recurring basis for DTE Electric:
Year Ended December 31,
20232022
(In millions)
Net Assets as of January 1$11 $9 
Total gains recorded in Regulatory liabilities9 21 
Purchases, issuances, and settlements:
Settlements(13)(19)
Net Assets as of December 31$7 $11 
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31$7 $11 
Unobservable Inputs Related to Level 3 Assets and Liabilities
The following tables present the unobservable inputs related to DTE Energy's Level 3 assets and liabilities:
December 31, 2023
Commodity ContractsDerivative AssetsDerivative LiabilitiesValuation TechniquesUnobservable InputRangeWeighted Average
(In millions)
Natural Gas$179 $(157)Discounted Cash FlowForward basis price (per MMBtu)$(1.57)—$6.27 /MMBtu$(0.08)/MMBtu
Electricity$163 $(116)Discounted Cash FlowForward basis price (per MWh)$(18.49)—$15.47 /MWh$(3.99)/MWh
December 31, 2022
Commodity ContractsDerivative AssetsDerivative LiabilitiesValuation TechniquesUnobservable InputRangeWeighted Average
(In millions)
Natural Gas$135 $(390)Discounted Cash FlowForward basis price (per MMBtu)$(1.91)—$39.94 /MMBtu$0.18 /MMBtu
Electricity$243 $(276)Discounted Cash FlowForward basis price (per MWh)$(29.41)—$15.00 /MWh$(3.04)/MWh
Carrying Amount of Fair Value of Financial Instruments
The following table presents the carrying amount and fair value of financial instruments for DTE Energy:
December 31, 2023December 31, 2022
CarryingFair ValueCarryingFair Value
AmountLevel 1Level 2Level 3AmountLevel 1Level 2Level 3
(In millions)
Notes receivable(a), excluding lessor finance leases
$175 $— $— $181 $80 $— $— $82 
Short-term borrowings$1,283 $— $1,283 $— $1,162 $— $1,162 $— 
Notes payable(b)
$34 $— $— $34 $18 $— $— $18 
Long-term debt(c)
$19,546 $807 $16,178 $1,202 $17,978 $710 $14,084 $1,199 
_______________________________________
(a)Current portion included in Current Assets — Other on DTE Energy's Consolidated Statements of Financial Position.
(b)Included in Current Liabilities — Other and Other Liabilities — Other on DTE Energy's Consolidated Statements of Financial Position.
(c)Includes debt due within one year and excludes finance lease obligations. Carrying value also includes unamortized debt discounts and issuance costs.
The following table presents the carrying amount and fair value of financial instruments for DTE Electric:
December 31, 2023December 31, 2022
CarryingFair ValueCarryingFair Value
AmountLevel 1Level 2Level 3AmountLevel 1Level 2Level 3
(In millions)
Notes receivable — Other(a)
$19 $— $— $19 $17 $— $— $17 
Short-term borrowings — affiliates$— $— $— $— $27 $— $— $27 
Short-term borrowings — other$385 $— $385 $— $568 $— $568 $— 
Notes payable(b)
$33 $— $— $33 $17 $— $— $17 
Long-term debt(c)
$11,043 $— $9,999 $126 $9,696 $— $8,289 $128 
_______________________________________
(a)Included in Current Assets — Other and Other Assets — Other on DTE Electric's Consolidated Statements of Financial Position.
(b)Included in Current Liabilities — Other and Other Liabilities — Other on DTE Electric's Consolidated Statements of Financial Position.
(c)Includes debt due within one year and excludes finance lease obligations. Carrying value also includes unamortized debt discounts and issuance costs.
Fair Value of Nuclear Decommissioning Trust Fund Assets
The following table summarizes DTE Electric's fair value of the nuclear decommissioning trust fund assets:
December 31,
20232022
(In millions)
Fermi 2$2,026 $1,807 
Fermi 13 3 
Low-level radioactive waste12 15 
$2,041 $1,825 
Schedule of Realized Gains and Losses and Proceeds from Sale of Securities by Nuclear Decommissioning Trust Funds The following table sets forth DTE Electric's gains and losses and proceeds from the sale of securities by the nuclear decommissioning trust funds:
Year Ended December 31,
202320222021
(In millions)
Realized gains$36 $71 $95 
Realized losses$(42)$(53)$(12)
Proceeds from sale of securities$681 $879 $1,047 
Fair Value and Unrealized Gains and Losses for Nuclear Decommissioning Trust Funds
The following table sets forth DTE Electric's fair value and unrealized gains and losses for the nuclear decommissioning trust funds:
December 31, 2023December 31, 2022
Fair
Value		Unrealized
Gains		Unrealized LossesFair
Value		Unrealized
Gains		Unrealized Losses
(In millions)
Equity securities$921 $459 $(11)$839 $342 $(23)
Fixed income securities590 8 (30)563 1 (56)
Private equity and other312 74 (8)262 63 (5)
Hedge funds and similar investments184 4 (9)119 — (18)
Cash equivalents34 — — 42 — — 
$2,041 $545 $(58)$1,825 $406 $(102)
Fair Value of the Fixed Income Securities Held in Nuclear Decommissioning Trust Funds
The following table summarizes the fair value of the fixed income securities held in nuclear decommissioning trust funds by contractual maturity:
December 31, 2023
(In millions)
Due within one year$12 
Due after one through five years118 
Due after five through ten years95 
Due after ten years273 
$498 
v3.24.0.1
Financial and Other Derivative Instruments (Tables)
 12 Months Ended
Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Fair Value of Derivative Instruments
The following table presents the fair value of derivative instruments for DTE Energy:
December 31, 2023December 31, 2022
Derivative
Assets		Derivative
Liabilities		Derivative
Assets		Derivative
Liabilities
(In millions)
Derivatives designated as hedging instruments
Interest rate contracts$— $(16)$1 $— 
Foreign currency exchange contracts— (2)— (2)
Total derivatives designated as hedging instruments$— $(18)$1 $(2)
Derivatives not designated as hedging instruments
Commodity contracts
Natural gas$637 $(615)$744 $(1,018)
Electricity421 (388)963 (935)
Environmental & Other139 (150)213 (214)
Foreign currency exchange contracts— (1)1 — 
Total derivatives not designated as hedging instruments$1,197 $(1,154)$1,921 $(2,167)
Current$910 $(847)$1,517 $(1,535)
Noncurrent287 (325)405 (634)
Total derivatives$1,197 $(1,172)$1,922 $(2,169)
Offsetting Assets
The following table presents net cash collateral offsetting arrangements for DTE Energy:
December 31,
20232022
(In millions)
Cash collateral netted against Derivative assets$— $(90)
Cash collateral netted against Derivative liabilities72 113 
Cash collateral recorded in Accounts receivable(a)
57 77 
Cash collateral recorded in Accounts payable(a)
(3)(27)
Total net cash collateral posted (received)$126 $73 
_______________________________________
(a)Amounts are recorded net by counterparty.
The following table presents the netting offsets of Derivative assets and liabilities for DTE Energy:
December 31, 2023December 31, 2022
Gross Amounts of Recognized Assets (Liabilities)Gross Amounts Offset in the Consolidated Statements of Financial PositionNet Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial PositionGross Amounts of Recognized Assets (Liabilities)Gross Amounts Offset in the Consolidated Statements of Financial PositionNet Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position
(In millions)
Derivative assets
Commodity contracts
Natural gas$637 $(416)$221 $744 $(649)$95 
Electricity421 (243)178 963 (643)320 
Environmental & Other139 (132)7 213 (196)17 
Interest rate contracts— — — 1 — 1 
Foreign currency exchange contracts— — — 1 (1)— 
Total derivative assets$1,197 $(791)$406 $1,922 $(1,489)$433 
Derivative liabilities
Commodity contracts
Natural gas$(615)$429 $(186)$(1,018)$645 $(373)
Electricity(388)297 (91)(935)665 (270)
Environmental & Other(150)137 (13)(214)201 (13)
Interest rate contracts(16)— (16)— — — 
Foreign currency exchange contracts(3)— (3)(2)1 (1)
Total derivative liabilities$(1,172)$863 $(309)$(2,169)$1,512 $(657)
Offsetting Liabilities
The following table presents net cash collateral offsetting arrangements for DTE Energy:
December 31,
20232022
(In millions)
Cash collateral netted against Derivative assets$— $(90)
Cash collateral netted against Derivative liabilities72 113 
Cash collateral recorded in Accounts receivable(a)
57 77 
Cash collateral recorded in Accounts payable(a)
(3)(27)
Total net cash collateral posted (received)$126 $73 
_______________________________________
(a)Amounts are recorded net by counterparty.
The following table presents the netting offsets of Derivative assets and liabilities for DTE Energy:
December 31, 2023December 31, 2022
Gross Amounts of Recognized Assets (Liabilities)Gross Amounts Offset in the Consolidated Statements of Financial PositionNet Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial PositionGross Amounts of Recognized Assets (Liabilities)Gross Amounts Offset in the Consolidated Statements of Financial PositionNet Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position
(In millions)
Derivative assets
Commodity contracts
Natural gas$637 $(416)$221 $744 $(649)$95 
Electricity421 (243)178 963 (643)320 
Environmental & Other139 (132)7 213 (196)17 
Interest rate contracts— — — 1 — 1 
Foreign currency exchange contracts— — — 1 (1)— 
Total derivative assets$1,197 $(791)$406 $1,922 $(1,489)$433 
Derivative liabilities
Commodity contracts
Natural gas$(615)$429 $(186)$(1,018)$645 $(373)
Electricity(388)297 (91)(935)665 (270)
Environmental & Other(150)137 (13)(214)201 (13)
Interest rate contracts(16)— (16)— — — 
Foreign currency exchange contracts(3)— (3)(2)1 (1)
Total derivative liabilities$(1,172)$863 $(309)$(2,169)$1,512 $(657)
Netting Offsets of Derivative Assets and Liabilities Reconciliation to the Statements of Financial Position
The following table presents the netting offsets of Derivative assets and liabilities showing the reconciliation of derivative instruments to DTE Energy's Consolidated Statements of Financial Position:
December 31, 2023December 31, 2022
Derivative AssetsDerivative LiabilitiesDerivative AssetsDerivative Liabilities
CurrentNoncurrentCurrentNoncurrentCurrentNoncurrentCurrentNoncurrent
(In millions)
Total fair value of derivatives$910 $287 $(847)$(325)$1,517 $405 $(1,535)$(634)
Counterparty netting(613)(178)613 178 (1,127)(272)1,127 272 
Collateral adjustment— — 57 15 (62)(28)66 47 
Total derivatives as reported$297 $109 $(177)$(132)$328 $105 $(342)$(315)
Gain (Loss) Recognized in Income on Derivatives
The effect of derivatives not designated as hedging instruments on DTE Energy's Consolidated Statements of Operations is as follows:
Location of Gain (Loss) Recognized in Income on DerivativesGain (Loss) Recognized in Income on Derivatives for Years Ended December 31,
202320222021
(In millions)
Commodity contracts
Natural gasOperating Revenues — Non-utility operations $153 $(235)$(224)
Natural gasFuel, purchased power, gas, and other — non-utility122 (108)(89)
ElectricityOperating Revenues — Non-utility operations 105 221 169 
Environmental & OtherOperating Revenues — Non-utility operations 5 13 (40)
Foreign currency exchange contractsOperating Revenues — Non-utility operations (2)3 — 
Total$383 $(106)$(184)
Volume of Commodity Contracts
The following represents the cumulative gross volume of DTE Energy's derivative contracts outstanding as of December 31, 2023:
CommodityNumber of Units
Natural gas (MMBtu)2,201,557,616 
Electricity (MWh)40,542,536 
Oil (Gallons)4,272,000 
Foreign currency exchange ($ CAD)127,326,648 
FTR (MWh)66,064 
Renewable Energy Certificates (MWh)10,242,908 
Carbon emissions (Metric Ton)746,400 
Interest rate contracts ($ USD)1,200,000,000 
Treasury Lock ($ USD)500,000,000 
v3.24.0.1
Long-Term Debt (Tables)
 12 Months Ended
Dec. 31, 2023
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments
DTE Energy's long-term debt outstanding and interest rates of debt outstanding at December 31 were:
Interest Rate(a)
Maturity Date20232022
(In millions)
Mortgage bonds, notes, and other
DTE Energy debt, unsecured3.3%2024 — 2030$5,105 $5,105 
DTE Electric debt, principally secured3.8%2024 — 205310,370 9,572 
DTE Gas debt, principally secured4.2%2025 — 20522,545 2,325 
18,020 17,002 
Unamortized debt discount(26)(26)
Unamortized debt issuance costs(100)(92)
Long-term debt due within one year(2,075)(1,077)
$15,819 $15,807 
Securitization bonds(b)
DTE Electric securitization bonds5.3%2027 — 2038$777 $215 
Unamortized debt issuance costs(8)(4)
Long-term debt due within one year(64)(39)
$705 $172 
Junior Subordinated Debentures
Subordinated debentures4.8%2077 — 2081$910 $910 
Unamortized debt issuance costs(27)(27)
$883 $883 
_______________________________________
(a)Weighted average interest rate as of December 31, 2023.
(b)Bonds are held by DTE Securitization I and DTE Securitization II, special purpose entities consolidated by DTE Electric. Refer to Note 1 to the Consolidated Financial Statements, “Organization and Basis of Presentation,” for additional information regarding these entities and restrictions related to the bonds.
DTE Electric's long-term debt outstanding and interest rates of debt outstanding at December 31 were:
Interest Rate(a)
Maturity Date20232022
(In millions)
Mortgage bonds, notes, and other
Long-term debt, principally secured3.8%2024 — 2053$10,370 $9,572 
Unamortized debt discount(23)(22)
Unamortized debt issuance costs(73)(65)
Long-term debt due within one year(100)(203)
$10,174 $9,282 
Securitization bonds(b)
DTE Electric securitization bonds5.3%2027 — 2038$777 $215 
Unamortized debt issuance costs(8)(4)
Long-term debt due within one year(64)(39)
$705 $172 
_______________________________________
(a)Weighted average interest rate as of December 31, 2023.
(b)Bonds are held by DTE Securitization I and DTE Securitization II, special purpose entities consolidated by DTE Electric. Refer to Note 1 to the Consolidated Financial Statements, “Organization and Basis of Presentation,” for additional information regarding these entities and restrictions related to the bonds.
Schedule of Debt Issued
Refer to the table below for debt issued in 2023:
CompanyMonthTypeInterest RateMaturity DateAmount
(In millions)
DTE ElectricMarch
Mortgage bonds(a)
5.20%2033$600 
DTE ElectricMarch
Mortgage bonds(a)
5.40%2053600 
DTE EnergyMarch
Term loan facility draw(b)
Variable2023200 
DTE EnergyMay
Senior notes(c)
4.875%2028800 
DTE ElectricJune
Tax-exempt revenue bonds(d)
3.875%2053100 
DTE GasOctober
Mortgage bonds(a)
5.57%2030150 
DTE GasOctober
Mortgage bonds(a)
5.73%2035145 
DTE ElectricNovember
Securitization bonds(e)
5.97%
2033(f)
301 
DTE ElectricNovember
Securitization bonds(e)
6.09%
2038(g)
301 
$3,197 
_______________________________________
(a)Proceeds used for the repayment of short-term borrowings, for capital expenditures, and for other general corporate purposes.
(b)Proceeds used for general corporate purposes.
(c)Proceeds used for the repayment of amounts outstanding under the term loan facility.
(d)Tax-exempt revenue bonds are issued by a public body that loans the proceeds to DTE Electric with terms substantially mirroring the revenue bonds. Proceeds were used to finance costs relating to solid waste disposal facilities at the Monroe and St. Clair power plants. The bonds will be subject to mandatory tender in June 2030.
(e)Bonds were issued in alignment with Green Bond principles to support the closure and recovery of St. Clair and Trenton Channel generation plants and DTE Electric's transition to cleaner energy. Proceeds were used to reimburse DTE Electric for qualified costs incurred or the net book value of the St. Clair and Trenton Channel plants and other qualified costs. The securitization financing order from the MPSC required that the net proceeds be subsequently applied by DTE Electric to retire existing debt or equity. Accordingly, DTE Electric used net proceeds of $297 million towards the partial retirement of the 2013 Series B Mortgage bonds noted in the Debt Redemptions table below and issued a special dividend of $297 million to DTE Energy. Refer to Note 9 to the Consolidated Financial Statements, "Regulatory Matters," for additional information.
(f)Principal payments on the bonds will be made semi-annually beginning September 2024, with the final payment scheduled for March 2032.
(g)Principal payments on the bonds will be made semi-annually beginning March 2032, with the final payment scheduled for September 2037.
Schedule of Debt Redeemed
Refer to the table below for debt redeemed in 2023:
CompanyMonthTypeInterest RateMaturity DateAmount
(In millions)
DTE GasAprilSenior notes6.44%2023$25 
DTE EnergyMayTerm loan facilityVariable2023800
DTE ElectricJuneSecuritization bonds2.64%202319
DTE EnergyJuneTerm loan facilityVariable2023200
DTE ElectricSeptemberMortgage bonds4.31%2023102
DTE ElectricOctoberSenior notes5.19%2023100
DTE ElectricDecemberSecuritization bonds2.64%202320
DTE GasDecemberMortgage bonds3.64%202350
DTE ElectricDecember
Mortgage bonds(a)
3.65%2024300
$1,616 
_______________________________________
(a)Represents a partial redemption with $100 million remaining principal to be redeemed in 2024.
Schedule of Maturities of Long-term Debt
The following table shows the Registrants' scheduled debt maturities, excluding any unamortized discount on debt:
202420252026202720282029 and ThereafterTotal
(In millions)
DTE Energy(a)(b)
$2,139 $1,292 $851 $230 $1,737 $13,458 $19,707 
DTE Electric(b)
$164 $422 $251 $39 $617 $9,654 $11,147 
_______________________________________
(a)Amounts include DTE Electric's scheduled debt maturities.
(b)Amounts include DTE Securitization I and DTE Securitization II scheduled debt maturities.
Scheduled Interest Payments Related to Long-term Debt
The following table shows scheduled interest payments related to the Registrants' long-term debt:
202420252026202720282029 and ThereafterTotal
(In millions)
DTE Energy(a)(b)
$749 $668 $651 $623 $589 $8,412 $11,692 
DTE Electric(b)
$432 $427 $416 $408 $400 $5,150 $7,233 
_______________________________________
(a)Amounts include DTE Electric's scheduled interest payments.
(b)Amounts include DTE Securitization I and DTE Securitization II scheduled interest payments.
v3.24.0.1
Preferred and Preference Securities (Tables)
 12 Months Ended
Dec. 31, 2023
Preferred Stock, Number of Shares, Par Value and Other Disclosure [Abstract]  
Schedule of Preferred and Preference Securities
As of December 31, 2023, the amount of authorized and unissued stock is as follows:
CompanyType of StockPar ValueShares Authorized
DTE EnergyPreferred$— 5,000,000 
DTE ElectricPreferred$100 6,747,484 
DTE ElectricPreference$1 30,000,000 
DTE GasPreferred$1 7,000,000 
DTE GasPreference$1 4,000,000 
v3.24.0.1
Short-Term Credit Arrangements and Borrowings (Tables)
 12 Months Ended
Dec. 31, 2023
Short-Term Debt [Abstract]  
Schedule of Line of Credit Facilities
The availability under the facilities in place at December 31, 2023 is shown in the following table:
DTE EnergyDTE ElectricDTE GasTotal
(In millions)
Unsecured revolving credit facility, expiring October 2028$1,500 $800 $300 $2,600 
Unsecured letter of credit facility, expiring June 2024175 — — 175 
Unsecured letter of credit facility, expiring February 2025150 — — 150 
Unsecured letter of credit facilities(a)
150 — — 150 
Unsecured letter of credit facility(b)
— 100 — 100 
1,975 900 300 3,175 
Amounts outstanding at December 31, 2023
Commercial paper issuances821 385 77 1,283 
Letters of credit115 44 — 159 
936 429 77 1,442 
Net availability at December 31, 2023$1,039 $471 $223 $1,733 
_______________________________________
(a)Uncommitted letter of credit facilities with automatic renewal provision and therefore no expiration.
(b)Uncommitted letter of credit facility with automatic renewal provision and therefore no expiration. DTE Energy may also utilize availability under this facility.
v3.24.0.1
Leases (Tables)
 12 Months Ended
Dec. 31, 2023
Leases [Abstract]  
Components of Lease Cost and Other Information Related to Leases
The following is a summary of the components of lease cost for the years ended December 31:
DTE EnergyDTE Electric
202320222021202320222021
(In millions)
Operating lease cost$22 $18 $19 $17 $12 $14 
Finance lease cost:
Amortization of right-of-use assets7 7 7 6 6 6 
Interest of lease liabilities— 1 1 — — — 
Total finance lease cost7 8 8 6 6 6 
Variable lease cost13 9 9 — — — 
Short-term lease cost12 19 14 4 10 6 
$54 $54 $50 $27 $28 $26 
The following is a summary of other information related to leases for the years ended December 31:
DTE EnergyDTE Electric
202320222021202320222021
(In millions)
Supplemental Cash Flows Information
Cash paid for amounts included in the measurement of these liabilities:
Operating cash flows for finance leases$9 $8 $8 $7 $7 $7 
Operating cash flows for operating leases$19 $17 $19 $15 $12 $14 
Right-of-use assets obtained in exchange for lease obligations:
Operating leases$61 $5 $5 $61 $2 $1 
Finance leases$5 $3 $3 $5 $1 $1 
Weighted Average Remaining Lease Term (Years)
Operating leases18.712.812.719.811.110.3
Finance leases8.98.27.84.51.12.1
Weighted Average Discount Rate
Operating leases4.4 %3.7 %3.6 %4.5 %3.4 %3.4 %
Finance leases4.0 %2.4 %2.2 %5.4 %1.0 %1.0 %
Schedule of Maturities of Operating Leases
The Registrants' future minimum lease payments under leases for remaining periods as of December 31, 2023 are as follows:
DTE EnergyDTE Electric
Operating LeasesFinance LeasesOperating LeasesFinance Leases
(In millions)
2024$20 $3 $16 $2 
202515 3 12 1 
202614 2 10 1 
202712 2 10 1 
202810 2 8 1 
2029 and thereafter134 6 110 — 
Total future minimum lease payments205 18 166 6 
Imputed interest(80)(2)(70)— 
Lease liabilities$125 $16 $96 $6 
Schedule of Maturities of Finance Leases
The Registrants' future minimum lease payments under leases for remaining periods as of December 31, 2023 are as follows:
DTE EnergyDTE Electric
Operating LeasesFinance LeasesOperating LeasesFinance Leases
(In millions)
2024$20 $3 $16 $2 
202515 3 12 1 
202614 2 10 1 
202712 2 10 1 
202810 2 8 1 
2029 and thereafter134 6 110 — 
Total future minimum lease payments205 18 166 6 
Imputed interest(80)(2)(70)— 
Lease liabilities$125 $16 $96 $6 
Schedule of Finance Leases Reported on Consolidated Statement of Financial Position
Finance leases reported on the Consolidated Statements of Financial Position are as follows for the years ended December 31:
DTE EnergyDTE Electric
2023202220232022
(In millions)
Right-of-use assets, within Property, plant, and equipment, net$18 $19 $6 $6 
Current lease liabilities, within Current portion of long-term debt$3 $8 $2 $6 
Long-term lease liabilities$13 $11 $4 $1 
Schedule of Lease Income Associated with Operating Leases
DTE Energy’s lease income associated with operating leases, including the line items in which it was included on the Consolidated Statements of Operations, was as follows:
202320222021
(In millions)
Fixed payments$15 $15 $67 
Variable payments44 67 131 
$59 $82 $198 
Operating revenues$59 $82 $103 
Other income(a)
— — 95 
$59 $82 $198 
_______________________________________
(a)Decrease in 2022 is due to the closure of the REF business.
Schedule of Minimum Future Rental Revenues under Operating Leases
DTE Energy’s minimum future rental revenues under operating leases for remaining periods as of December 31, 2023 are as follows:
DTE Energy
(In millions)
2024$15 
202515 
202611 
202710 
20286 
2029 and thereafter36 
$93 
Schedule of Property under Operating Leases
The following is a summary of property under operating leases for DTE Energy as of December 31:
20232022
(In millions)
Gross property under operating leases$228 $282 
Accumulated amortization of property under operating leases$118 $128 
Components of Net Investment in Finance Leases
The components of DTE Energy’s net investment in finance leases for remaining periods as of December 31, 2023 are as follows:
DTE Energy
(In millions)
2024$34 
202534 
202634 
202734 
202834 
2029 and thereafter389 
Total minimum future lease receipts559 
Residual value of leased pipeline17 
Less unearned income289 
Net investment in finance lease287 
Less current portion8 
$279 
v3.24.0.1
Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Long-term Purchase Commitments The Registrants estimate the following commitments from 2024 through 2051, as detailed in the following tables:
202420252026202720282029 and ThereafterTotal
DTE Energy(In millions)
Long-term power purchase agreements(a)
$92 $92 $92 $92 $92 $568 $1,028 
Other purchase commitments(b)
3,349 1,689 1,115 565 338 824 7,880 
Total commitments$3,441 $1,781 $1,207 $657 $430 $1,392 $8,908 
202420252026202720282029 and ThereafterTotal
DTE Electric(In millions)
Long-term power purchase agreements(a)
$98 $97 $97 $97 $97 $578 $1,064 
Other purchase commitments(b)
829 393 184 83 74 138 1,701 
Total commitments$927 $490 $281 $180 $171 $716 $2,765 
_______________________________________
(a)The agreements represent the minimum obligations with suppliers for renewable energy and renewable energy credits under existing contract terms which expire from 2030 through 2047. DTE Electric's share of plant output ranges from 28% to 100%. Purchase commitments for DTE Electric include affiliate agreements with DTE Sustainable Generation that are eliminated in consolidation for DTE Energy.
(b)Excludes amounts associated with full requirements contracts where no stated minimum purchase volume is required.
v3.24.0.1
Retirement Benefits and Trusteed Assets (Tables)
 12 Months Ended
Dec. 31, 2023
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Schedule of Defined Benefit Plans Disclosures
The table below represents the pension and other postretirement benefit plans of each Registrant at December 31, 2023:
Registrants
DTE EnergyDTE Electric
Qualified Pension Plans
DTE Energy Company Retirement PlanXX
DTE Gas Company Retirement Plan for Employees Covered by Collective Bargaining AgreementsX
Shenango Inc. Pension Plan(a)
X
Non-qualified Pension Plans
DTE Energy Company Supplemental Retirement Plan(b)
XX
DTE Energy Company Executive Supplemental Retirement Plan(b)
XX
DTE Energy Company Supplemental Severance Benefit PlanX
Other Postretirement Benefit Plans
The DTE Energy Company Comprehensive Non-Health Welfare PlanXX
The DTE Energy Company Comprehensive Retiree Group Health Care PlanXX
DTE Supplemental Retiree Benefit PlanXX
DTE Energy Company Retiree Reimbursement Arrangement PlanXX
_____________________________________
(a)Sponsored by Shenango, LLC
(b)Sponsored by DTE Energy Company
Pension Plan  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Schedule of Defined Benefit Plans Disclosures
The following table reconciles the obligations, assets, and funded status of the plans as well as the amounts recognized as prepaid pension cost or pension liability in DTE Energy's Consolidated Statements of Financial Position at December 31:
DTE Energy
20232022
(In millions)
Accumulated benefit obligation, end of year$4,089 $4,078 
Change in projected benefit obligation
Projected benefit obligation, beginning of year$4,309 $5,857 
Service cost57 95 
Interest cost214 166 
Actuarial (gain) loss74 (1,252)
Benefits paid(329)(278)
Settlements(7)(279)
Projected benefit obligation, end of year$4,318 $4,309 
Change in plan assets
Plan assets at fair value, beginning of year$3,897 $5,507 
Actual return on plan assets363 (1,062)
Company contributions36 9 
Benefits paid(329)(278)
Settlements(7)(279)
Plan assets at fair value, end of year$3,960 $3,897 
Funded status$(358)$(412)
Amount recorded as:
Current liabilities$(8)$(34)
Noncurrent liabilities(350)(378)
$(358)$(412)
Amounts recognized in Accumulated other comprehensive income (loss), pre-tax
Net actuarial loss$76 $85 
$76 $85 
Amounts recognized in Regulatory assets(a)
Net actuarial loss$1,426 $1,369 
Prior service credit(5)(7)
$1,421 $1,362 
______________________________________
(a)See Note 9 to the Consolidated Financial Statements, "Regulatory Matters."
Schedule of Net Benefit Costs
Net pension cost for DTE Energy includes the following components:
202320222021
(In millions)
Service cost$57 $95 $108 
Interest cost214 166 158 
Expected return on plan assets(352)(346)(339)
Amortization of:
Net actuarial loss7 115 196 
Prior service credit(2)(1)— 
Settlements7 94 16 
Net pension cost (credit)$(69)$123 $139 
Schedule of Amounts Recognized in Other Comprehensive Income (Loss)
20232022
(In millions)
Other changes in plan assets and benefit obligations recognized in Regulatory assets and Other comprehensive income (loss)
Net actuarial loss$62 $156 
Amortization of net actuarial loss and settlements(14)(209)
Amortization of prior service credit2 1 
Total recognized in Regulatory assets and Other comprehensive income (loss)$50 $(52)
Total recognized in net periodic pension cost, Regulatory assets, and Other comprehensive income (loss)$(19)$71 
Schedule of Expected Benefit Payments
At December 31, 2023, the benefits related to DTE Energy's qualified and non-qualified pension plans expected to be paid in each of the next five years and in the aggregate for the five fiscal years thereafter are as follows:
(In millions)
2024$319 
2025328 
2026322 
2027321 
2028324 
2029-20331,605 
Total$3,219 
Schedule of Assumptions Used
Assumptions used in determining the projected benefit obligation and net pension costs of DTE Energy are:
202320222021
Projected benefit obligation
Discount rate5.00%5.19%2.91%
Rate of compensation increase3.80%3.80%3.80%
Cash balance interest crediting rate3.60%3.40%2.40%
Net pension costs
Discount rate5.19%2.91%2.57%
Rate of compensation increase3.80%3.80%3.80%
Expected long-term rate of return on plan assets7.60%6.80%7.00%
Cash balance interest crediting rate3.40%2.40%2.00%
Schedule of Allocation of Plan Assets
Target allocations for DTE Energy's pension plan assets as of December 31, 2023 are listed below:
U.S. Large Capitalization (Cap) Equity Securities12 %
U.S. Small Cap and Mid Cap Equity Securities2 
Non-U.S. Equity Securities11 
Fixed Income Securities48 
Hedge Funds and Similar Investments8 
Private Equity and Other19 
100 %
The following table provides the fair value measurement amounts for DTE Energy's pension plan assets at December 31, 2023 and 2022(a):
December 31, 2023December 31, 2022
Level 1Level 2
Other(b)
TotalLevel 1Level 2
Other(b)
Total
DTE Energy asset category:(In millions)
Short-term Investments(c)
$100 $— $— $100 $77 $— $— $77 
Equity Securities
Domestic(d)
— — 550 550 — — 483 483 
International(e)
55 — 309 364 65 — 416 481 
Fixed Income Securities
Governmental(f)
531 78 — 609 506 77 — 583 
Corporate(g)
— 1,323 — 1,323 — 1,203 — 1,203 
Hedge Funds and Similar Investments(h)
104 68 110 282 86 50 185 321 
Private Equity and Other(i)
— — 732 732 — — 749 749 
DTE Energy Total$790 $1,469 $1,701 $3,960 $734 $1,330 $1,833 $3,897 
_______________________________________
(a)For a description of levels within the fair value hierarchy, see Note 12 to the Consolidated Financial Statements, "Fair Value."
(b)Amounts represent assets valued at NAV as a practical expedient for fair value.
(c)This category predominantly represents certain short-term fixed income securities and money market investments that are managed in separate accounts or commingled funds. Pricing for investments in this category is obtained from quoted prices in actively traded markets.
(d)This category represents portfolios of large, medium and small capitalization domestic equities. Investments in this category include exchange-traded securities held in a commingled fund classified as NAV assets.
(e)This category primarily consists of portfolios of non-U.S. developed and emerging market equities. Investments in this category include exchange-traded securities for which unadjusted quoted prices can be obtained and exchange-traded securities held in a commingled fund classified as NAV assets.
(f)This category includes U.S. Treasuries, bonds, and other governmental debt. Pricing for investments in this category is obtained from quoted prices in actively traded markets and quotations from broker or pricing services.
(g)This category primarily consists of corporate bonds from diversified industries, bank loans, and mortgage backed securities. Pricing for investments in this category is obtained from quotations from broker or pricing services.
(h)This category utilizes a diversified group of strategies that attempt to capture uncorrelated sources of return and includes publicly traded mutual funds, insurance-linked and asset-backed securities, commingled funds and limited partnership funds. Pricing for mutual funds in this category is obtained from quoted prices in actively traded markets. Pricing for insurance-linked and asset-backed securities is obtained from quotations from broker or pricing services. Commingled funds and limited partnership funds are classified as NAV assets.
(i)This category includes a diversified group of funds and strategies that primarily invests in private equity partnerships. This category also includes investments in private real estate and private debt. All investments in this category are classified as NAV assets.
Other postretirement benefit plan  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Schedule of Defined Benefit Plans Disclosures
The following table reconciles the obligations, assets, and funded status of the plans including amounts recorded as Accrued postretirement liability in the Registrants' Consolidated Statements of Financial Position at December 31:
DTE EnergyDTE Electric
2023202220232022
(In millions)
Change in accumulated postretirement benefit obligation
Accumulated postretirement benefit obligation, beginning of year$1,293 $1,702 $982 $1,293 
Service cost17 27 13 20 
Interest cost65 48 49 37 
Actuarial (gain) loss(5)(395)2 (301)
Benefits paid(87)(89)(64)(67)
Accumulated postretirement benefit obligation, end of year$1,283 $1,293 $982 $982 
Change in plan assets
Plan assets at fair value, beginning of year$1,577 $2,021 $1,052 $1,355 
Actual return on plan assets124 (359)81 (239)
Benefits paid(87)(85)(63)(64)
Plan assets at fair value, end of year$1,614 $1,577 $1,070 $1,052 
Funded status$331 $284 $88 $70 
Amount recorded as:
Noncurrent assets$633 $571 $378 $345 
Current liabilities(1)— — — 
Noncurrent liabilities(301)(287)(290)(275)
$331 $284 $88 $70 
Amounts recognized in Accumulated other comprehensive income (loss), pre-tax
Net actuarial gain$(13)$(14)$— $— 
Amounts recognized in Regulatory assets(a)
Net actuarial loss$173 $201 $73 $80 
Prior service credit(10)(29)(6)(20)
$163 $172 $67 $60 
______________________________________
(a)See Note 9 to the Consolidated Financial Statements, "Regulatory Matters."
Schedule of Net Benefit Costs
Net other postretirement credit for DTE Energy includes the following components:
202320222021
(In millions)
Service cost$17 $27 $30 
Interest cost65 48 46 
Expected return on plan assets(111)(126)(129)
Amortization of:
Net actuarial loss10 4 13 
Prior service credit(19)(19)(19)
Net other postretirement credit$(38)$(66)$(59)
Net other postretirement credit for DTE Electric includes the following components:
202320222021
(In millions)
Service cost$13 $20 $23 
Interest cost49 37 35 
Expected return on plan assets(73)(85)(86)
Amortization of:
Net actuarial loss1 5 11 
Prior service credit(14)(14)(14)
Net other postretirement credit$(24)$(37)$(31)
Schedule of Amounts Recognized in Other Comprehensive Income (Loss)
20232022
(In millions)
Other changes in plan assets and accumulated postretirement benefit obligation recognized in Regulatory assets and Other comprehensive income (loss)
Net actuarial (gain) loss$(17)$90 
Amortization of net actuarial loss(10)(4)
Prior service cost— 1 
Amortization of prior service credit19 19 
Total recognized in Regulatory assets and Other comprehensive income (loss)$(8)$106 
Total recognized in net periodic benefit cost, Regulatory assets, and Other comprehensive income (loss)$(46)$40 
20232022
(In millions)
Other changes in plan assets and accumulated postretirement benefit obligation recognized in Regulatory assets
Net actuarial (gain) loss$(6)$24 
Amortization of net actuarial loss(1)(5)
Amortization of prior service credit14 14 
Total recognized in Regulatory assets$7 $33 
Total recognized in net periodic benefit cost and Regulatory assets$(17)$(4)
Schedule of Expected Benefit Payments
At December 31, 2023, the benefits expected to be paid, including prescription drug benefits, in each of the next five years and in the aggregate for the five fiscal years thereafter for the Registrants are as follows:
DTE EnergyDTE Electric
(In millions)
2024$84 $64 
202588 67 
202689 68 
202791 70 
202892 71 
2029-2033482 369 
Total$926 $709 
Schedule of Assumptions Used
Assumptions used in determining the accumulated postretirement benefit obligation and net other postretirement benefit costs of the Registrants are:
202320222021
Accumulated postretirement benefit obligation
Discount rate5.00%5.19%2.91%
Health care trend rate pre- and post- 65
7.75 / 8.25%
6.75 / 7.25%
6.75 / 7.25%
Ultimate health care trend rate4.50%4.50%4.50%
Year in which ultimate reached pre- and post- 65203520352034
Other postretirement benefit costs
Discount rate5.19%2.91%2.58%
Expected long-term rate of return on plan assets7.20%6.40%6.70%
Health care trend rate pre- and post- 65
6.75 / 7.25%
6.75 / 7.25%
6.75 / 7.25%
Ultimate health care trend rate4.50%4.50%4.50%
Year in which ultimate reached pre- and post- 65203520342033
Schedule of Allocation of Plan Assets
Target allocations for the Registrants' other postretirement benefit plan assets as of December 31, 2023 are listed below:
U.S. Large Cap Equity Securities5 %
Non-U.S. Equity Securities4 
Fixed Income Securities61 
Hedge Funds and Similar Investments9 
Private Equity and Other21 
100 %
The following tables provide the fair value measurement amounts for the Registrants' other postretirement benefit plan assets at December 31, 2023 and 2022(a):
December 31, 2023December 31, 2022
Level 1Level 2
Other(b)
TotalLevel 1Level 2
Other(b)
Total
(In millions)
DTE Energy asset category:
Short-term Investments(c)
$41 $— $— $41 $35 $— $— $35 
Equity Securities
Domestic(d)
— — 76 76 — — 78 78 
International(e)
7 — 43 50 9 — 61 70 
Fixed Income Securities
Governmental(f)
242 31 — 273 264 32 — 296 
Corporate(g)
— 459 212 671 — 396 194 590 
Hedge Funds and Similar Investments(h)
18 21 86 125 31 22 94 147 
Private Equity and Other(i)
— — 378 378 — — 361 361 
DTE Energy Total$308 $511 $795 $1,614 $339 $450 $788 $1,577 
DTE Electric asset category:
Short-term Investments(c)
$27 $— $— $27 $23 $— $— $23 
Equity Securities
Domestic(d)
— — 48 48 — — 50 50 
International(e)
4 — 27 31 5 — 39 44 
Fixed Income Securities
Governmental(f)
161 21 — 182 178 21 — 199 
Corporate(g)
— 302 145 447 — 262 134 396 
Hedge Funds and Similar Investments(h)
11 14 58 83 20 15 63 98 
Private Equity and Other(i)
— — 252 252 — — 242 242 
DTE Electric Total$203 $337 $530 $1,070 $226 $298 $528 $1,052 
_______________________________________
(a)For a description of levels within the fair value hierarchy see Note 12 to the Consolidated Financial Statements, "Fair Value."
(b)Amounts represent assets valued at NAV as a practical expedient for fair value.
(c)This category predominantly represents certain short-term fixed income securities and money market investments that are managed in separate accounts or commingled funds. Pricing for investments in this category is obtained from quoted prices in actively traded markets.
(d)This category represents portfolios of large, medium and small capitalization domestic equities. Investments in this category include exchange-traded securities held in a commingled fund classified as NAV assets.
(e)This category primarily consists of portfolios of non-U.S. developed and emerging market equities. Investments in this category include exchange-traded securities for which unadjusted quoted prices can be obtained and exchange-traded securities held in a commingled fund classified as NAV assets.
(f)This category includes U.S. Treasuries, bonds and other governmental debt. Pricing for investments in this category is obtained from quoted prices in actively traded markets and quotations from broker or pricing services.
(g)This category primarily consists of corporate bonds from diversified industries, bank loans, and mortgage backed securities. Pricing for investments in this category is obtained from quotations from broker or pricing services. Non-exchange traded securities and exchange-traded securities held in commingled funds are classified as NAV assets.
(h)This category utilizes a diversified group of strategies that attempt to capture uncorrelated sources of return and includes publicly traded mutual funds, insurance-linked and asset-backed securities, commingled funds and limited partnership funds. Pricing for mutual funds in this category is obtained from quoted prices in actively traded markets. Pricing for insurance-linked and asset-backed securities is obtained from quotations from broker or pricing services. Commingled funds and limited partnership funds are classified as NAV assets.
(i)This category includes a diversified group of funds and strategies that primarily invests in private equity partnerships. This category also includes investments in private real estate and private debt. All investments in this category are classified as NAV assets.
Schedule of Accumulated Benefit Obligations in Excess of Plan Assets
The following table reflects other postretirement benefit plans with accumulated postretirement benefit obligations in excess of plan assets as of December 31:
DTE EnergyDTE Electric
2023202220232022
(In millions)
Accumulated postretirement benefit obligation$628 $625 $592 $591 
Fair value of plan assets326 338 302 316 
Accumulated postretirement benefit obligation in excess of plan assets$302 $287 $290 $275 
Retiree healthcare plan (VEBA)  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Schedule of VEBA Contributions The following table provides contributions to the VEBA in:
202320222021
(In millions)
DTE Energy$16 $16 $18 
DTE Electric$7 $7 $8 
v3.24.0.1
Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2023
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Schedule of Components of Stock-Based Compensation
The following table summarizes the components of stock-based compensation for DTE Energy:
202320222021
(In millions)
Stock-based compensation expense$48 $62 $71 
Tax benefit$9 $11 $13 
Schedule of Activity Relating to Performance Share Awards
DTE Energy recorded activity relating to performance share awards as follows:
202320222021
(In millions, except per share amounts)
Weighted average grant date fair value of awards granted (per share)$112.73 $120.25 $118.43 
Awards settled in cash(a)
$9 $10 $12 
Awards settled in stock(a)
$59 $72 $74 
Compensation expense$34 $47 $58 
_______________________________________
(a)Sum of awards settled in cash and stock approximates the intrinsic value of the awards.
Schedule of Stock-based Compensation, Performance Shares Activity Rollforward
The following table summarizes DTE Energy’s performance share activity for the period ended December 31, 2023:
Performance SharesWeighted Average
Grant Date
Fair Value
Balance at December 31, 20221,018,057 $120.91 
Grants347,242 $112.73 
Forfeitures(65,632)$112.51 
Payouts(309,174)$112.30 
Balance at December 31, 2023990,493 $121.29 
Schedule of Unrecognized Compensation Cost, Non-Vested Awards
As of December 31, 2023, DTE Energy's total unrecognized compensation cost related to non-vested stock incentive plan arrangements and the weighted average recognition period was as follows:
Unrecognized
Compensation
Cost		Weighted Average
to be Recognized
(In millions)(In years)
Stock awards$20 1.39
Performance shares40 1.08
$60 1.18
v3.24.0.1
Segment and Related Information (Tables)
 12 Months Ended
Dec. 31, 2023
Segment Reporting [Abstract]  
Financial Data of Business Segments
Inter-segment billing for goods and services exchanged between segments is based upon tariffed or market-based prices of the provider. Such billing primarily consists of power sales, sale and transportation of natural gas, and renewable natural gas sales in the segments below, as well as charges from Electric to other segments for use of the shared capital assets of DTE Electric. For 2021, inter-segment billing also included the sale of reduced emissions fuel at DTE Vantage.
Year Ended December 31,
202320222021
(In millions)
Electric(a)
$72 $71 $64 
Gas17 13 14 
DTE Vantage68 78 575 
Energy Trading85 102 56 
Corporate and Other— — 2 
$242 $264 $711 
_______________________________________
(a)Inter-segment billing for the Electric segment includes $3 million, $6 million, and $4 million relating to Non-utility operations for the years ended December 31, 2023, 2022, and 2021, respectively.
Financial data of DTE Energy's business segments follows:
ElectricGasDTE VantageEnergy
Trading		Corporate
and
Other		Reclassifications
and
Eliminations		Total
(In millions)
2023
Operating Revenues — Utility operations$5,804 1,748 — — — (86)$7,466 
Operating Revenues — Non-utility operations$14 — 809 4,612 — (156)$5,279 
Depreciation and amortization$1,340 209 53 4 — — $1,606 
Interest expense$432 102 15 18 270 (46)$791 
Interest income$(20)(9)(32)(9)(33)46 $(57)
Equity earnings (losses) of equity method investees$— 1 7 — (5)— $3 
Income Tax Expense (Benefit)$78 93 (22)112 (92)— $169 
Net Income (Loss) Attributable to DTE Energy Company$772 294 153 336 (158)— $1,397 
Investment in equity method investees$5 16 118 — 27 — $166 
Capital expenditures and acquisitions$3,128 746 57 3 — — $3,934 
Goodwill$1,208 743 25 17 — — $1,993 
Total Assets$32,292 7,722 1,122 1,166 4,150 (1,697)$44,755 
ElectricGasDTE VantageEnergy
Trading		Corporate
and
Other		Reclassifications
and
Eliminations		Total
(In millions)
2022
Operating Revenues — Utility operations$6,397 1,924 — — — (78)$8,243 
Operating Revenues — Non-utility operations$15 — 848 10,308 — (186)$10,985 
Depreciation and amortization$1,218 192 52 5 1 — $1,468 
Interest expense$372 91 15 17 210 (30)$675 
Interest income$(8)(8)(28)(6)(26)30 $(46)
Equity earnings of equity method investees$— 2 — — (16)— $(14)
Income Tax Expense (Benefit)$25 88 18 (31)(71)— $29 
Net Income (Loss) Attributable to DTE Energy Company$956 272 92 (92)(145)— $1,083 
Investment in equity method investees$6 15 111 — 33 — $165 
Capital expenditures and acquisitions$2,620 693 62 3 — — $3,378 
Goodwill$1,208 743 25 17 — — $1,993 
Total Assets$30,342 7,321 1,077 1,385 4,409 (1,851)$42,683 
ElectricGasDTE VantageEnergy
Trading
Corporate
and
Other(a)
Reclassifications
and
Eliminations		Total from
Continuing
Operations		Discontinued
Operations		Total
(In millions)
2021
Operating Revenues — Utility operations$5,809 1,553 — — — (74)$7,288 
Operating Revenues — Non-utility operations$12 — 1,482 6,831 2 (651)$7,676 
Depreciation and amortization$1,122 177 71 6 1 — $1,377 
Interest expense$338 81 28 5 270 (92)$630 
Interest income$— (6)(23)(1)(84)92 $(22)
Equity earnings of equity method investees$— 1 8 — 29 — $38 
Income Tax Expense (Benefit)$104 38 (31)(27)(214)— $(130)
Net Income (Loss) Attributable to DTE Energy Company$864 214 168 (83)(367)— $796 111 $907 
Investment in equity method investees$6 13 118 — 50 — $187 
Capital expenditures and acquisitions$3,016 621 69 6 — — $3,712 60 $3,772 
Goodwill$1,208 743 25 17 — — $1,993 
Total Assets$28,524 6,729 983 1,174 4,281 (1,972)$39,719 — $39,719 
_______________________________________
(a)Corporate and Other results include significant one-time items resulting from the separation of DT Midstream, including a loss on debt extinguishment of $376 million following the settlement of intercompany borrowings with DT Midstream and optional redemption of DTE Energy long-term debt. DTE Energy also recognized a tax benefit of $85 million for the remeasurement of state deferred tax liabilities following the separation of DT Midstream.
v3.24.0.1
Related Party Transactions (Tables)
 12 Months Ended
Dec. 31, 2023
Related Party Transactions [Abstract]  
Summary of Related Party Transactions
The following is a summary of DTE Electric's transactions with affiliated companies:
202320222021
(In millions)
Revenues and Other Income
Energy sales$11 $8 $9 
Other services and interest$3 $— $2 
Shared capital assets$58 $57 $49 
Costs
Fuel and purchased power$50 $58 $13 
Other services and interest$2 $1 $— 
Corporate expenses$299 $379 $391 
Other
Dividends declared$1,002 $763 $588 
Dividends paid$1,002 $763 $588 
Capital contribution from DTE Energy$759 $600 $555 
v3.24.0.1
Organization and Basis of Presentation (Details Textuals)
customer in Millions, $ in Millions
Dec. 31, 2023
USD ($)
customer
Dec. 31, 2022
USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Number of electric utility customers | customer 2.3  
Number of gas utility customers | customer 1.3  
Variable Interest Entity [Line Items]    
Material potential exposure $ 0  
Investments in equity method investees 166 $ 165
Amount in excess of carrying amount 101 $ 99
DTE Electric    
Variable Interest Entity [Line Items]    
Material potential exposure $ 0  
v3.24.0.1
Organization and Basis of Presentation (Consolidated Variable Interest Entities) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
ASSETS      
Cash and cash equivalents $ 26 $ 33  
Restricted cash 25 10  
Accounts receivable 1,632 2,038  
Securitized regulatory assets 758 206  
Total Assets 44,755 42,683 $ 39,719
LIABILITIES      
Accounts payable 1,361 1,604  
Short-term borrowings 1,283 1,162  
DTE Electric      
ASSETS      
Cash and cash equivalents 15 15  
Restricted cash 17 9  
Securitized regulatory assets 758 206  
Total Assets 32,185 30,236  
Variable interest entity, primary beneficiary      
ASSETS      
Cash and cash equivalents 7 14  
Restricted cash 25 9  
Accounts receivable 85 6  
Securitized regulatory assets 758 206  
Notes receivable 183 81  
Other current and long-term assets 4 8  
Total Assets 1,062 324  
LIABILITIES      
Accounts payable 59 3  
Short-term borrowings 0 81  
Securitization bonds 769 211  
Other current and long-term liabilities 26 11  
Total liabilities 854 306  
Current portion of securitization bonds 64 39  
Variable interest entity, primary beneficiary | DTE Electric      
ASSETS      
Cash and cash equivalents 0 0  
Restricted cash 17 9  
Accounts receivable 6 3  
Securitized regulatory assets 758 206  
Notes receivable 0 0  
Other current and long-term assets 1 0  
Total Assets 782 218  
LIABILITIES      
Accounts payable 0 0  
Short-term borrowings 0 0  
Securitization bonds 769 211  
Other current and long-term liabilities 14 9  
Total liabilities 783 220  
Current portion of securitization bonds $ 64 $ 39  
v3.24.0.1
Organization and Basis of Presentation (Non-Consolidated Variable Interest Entities) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Variable Interest Entity [Line Items]    
Investments in equity method investees $ 166 $ 165
Notes receivable 420 331
Variable interest entity, nonconsolidated    
Variable Interest Entity [Line Items]    
Investments in equity method investees 112 137
Notes receivable 15 15
Future funding commitments $ 1 $ 2
v3.24.0.1
Significant Accounting Policies (Schedule of Other Income) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Schedule of Other Nonoperating Income, by Component [Line Items]      
Allowance for equity funds used during construction $ 42 $ 29 $ 27
Contract services 26 28 27
Investment income 17 3 14
Equity earnings (losses) of equity method investees 3 (14) 38
Income from REF entities 0 0 141
Other 14 12 7
Other income 102 58 254
DTE Electric      
Schedule of Other Nonoperating Income, by Component [Line Items]      
Allowance for equity funds used during construction 40 26 25
Contract services 25 27 27
Investment income 11 3 10
Other 11 9 9
Other income $ 87 $ 65 $ 71
v3.24.0.1
Significant Accounting Policies (Accumulated Other Comprehensive Loss) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance $ 10,401 $ 8,713 $ 12,589
Other comprehensive income (loss) (5) 50 15
Ending balance 11,055 10,401 8,713
AOCI including portion attributable to noncontrolling interest      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance (62) (112)  
Other comprehensive income (loss) before reclassifications (9) 5  
Amounts reclassified from Accumulated other comprehensive loss 4 45  
Other comprehensive income (loss) (5) 50  
Ending balance (67) (62) (112)
Net Unrealized Gain (Loss) on Derivatives      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance (4) (11)  
Other comprehensive income (loss) before reclassifications (14) 5  
Amounts reclassified from Accumulated other comprehensive loss 1 2  
Other comprehensive income (loss) (13) 7  
Ending balance (17) (4) (11)
Benefit Obligations      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance (58) (101)  
Other comprehensive income (loss) before reclassifications 3 0  
Amounts reclassified from Accumulated other comprehensive loss 3 43  
Other comprehensive income (loss) 6 43  
Ending balance (52) (58) (101)
Foreign Currency Translation      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance 0 0  
Other comprehensive income (loss) before reclassifications 2 0  
Amounts reclassified from Accumulated other comprehensive loss 0 0  
Other comprehensive income (loss) 2 0  
Ending balance $ 2 $ 0 $ 0
v3.24.0.1
Significant Accounting Policies (Details Textuals) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Significant Accounting Policies [Line Items]      
Unbilled revenues $ 1,632,000,000 $ 2,038,000,000  
Specific review of probable future collections based on receivable balances, threshold duration 30 days    
Goodwill impairments $ 0 0  
Goodwill changes in carrying value 0 0  
Intangible assets amortization expense 15,000,000 16,000,000 $ 16,000,000
Excise and sales taxes net impact on statement of operations 0    
Charitable contributions 0 0 $ 25,000,000
Natural gas inventory      
Significant Accounting Policies [Line Items]      
LIFO inventory amount 73,000,000 44,000,000  
Excess of replacement costs over stated LIFO value 50,000,000 152,000,000  
Notes receivable      
Significant Accounting Policies [Line Items]      
Financing receivables 175,000,000    
Past due      
Significant Accounting Policies [Line Items]      
Financing receivables $ 0    
Minimum | Notes receivable      
Significant Accounting Policies [Line Items]      
Number of days after which receivable is considered delinquent 60 days    
Maximum | Notes receivable      
Significant Accounting Policies [Line Items]      
Number of days after which receivable is considered delinquent 120 days    
DTE Electric and DTE Gas      
Significant Accounting Policies [Line Items]      
Threshold period past due for write-off of trade accounts receivable 150 days    
DTE Electric and DTE Gas | Accounts Receivable      
Significant Accounting Policies [Line Items]      
Number of days after which receivable is considered delinquent 21 days    
DTE Electric | Notes receivable      
Significant Accounting Policies [Line Items]      
Financing receivables $ 19,000,000    
Unbilled revenues      
Significant Accounting Policies [Line Items]      
Unbilled revenues 882,000,000 1,200,000,000  
Unbilled revenues | DTE Electric      
Significant Accounting Policies [Line Items]      
Unbilled revenues $ 311,000,000 $ 290,000,000  
v3.24.0.1
Significant Accounting Policies (Financing Receivables Classified by Internal Grade of Credit Risk) (Details)
$ in Millions
Dec. 31, 2023
USD ($)
Notes receivable  
Financing receivables by year of origination  
2023 $ 42
2022 112
2021 and prior 21
Total 175
Notes receivable | DTE Electric  
Financing receivables by year of origination  
Total 19
Notes receivable | Internal grade 1  
Financing receivables by year of origination  
2023 19
2022 0
2021 and prior 4
Total 23
Notes receivable | Internal grade 1 | DTE Electric  
Financing receivables by year of origination  
Total 18
Notes receivable | Internal grade 2  
Financing receivables by year of origination  
2023 23
2022 112
2021 and prior 17
Total 152
Notes receivable | Internal grade 2 | DTE Electric  
Financing receivables by year of origination  
Total 1
Net investment in leases  
Financing receivables by year of origination  
2023 0
2022 66
2021 and prior 221
Total 287
Net investment in leases | DTE Electric  
Financing receivables by year of origination  
Total 0
Net investment in leases | Internal grade 1  
Financing receivables by year of origination  
2023 0
2022 0
2021 and prior 37
Total 37
Net investment in leases | Internal grade 1 | DTE Electric  
Financing receivables by year of origination  
Total 0
Net investment in leases | Internal grade 2  
Financing receivables by year of origination  
2023 0
2022 66
2021 and prior 184
Total 250
Net investment in leases | Internal grade 2 | DTE Electric  
Financing receivables by year of origination  
Total $ 0
v3.24.0.1
Significant Accounting Policies (Roll-Forward of Activity for Financing Receivables Credit Loss Reserves) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance $ 79 $ 92 $ 104
Current period provision 52 49 54
Write-offs charged against allowance (112) (107) (127)
Recoveries of amounts previously written off 44 45 61
Ending balance 63 79 92
DTE Electric      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 49 54 57
Current period provision 36 33 36
Write-offs charged against allowance (72) (66) (77)
Recoveries of amounts previously written off 28 28 38
Ending balance 41 49 54
Trade accounts receivable      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 78 89 101
Current period provision 52 49 53
Write-offs charged against allowance (112) (105) (126)
Recoveries of amounts previously written off 44 45 61
Ending balance 62 78 89
Other receivables      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 1 3 3
Current period provision 0 0 1
Write-offs charged against allowance 0 (2) (1)
Recoveries of amounts previously written off 0 0 0
Ending balance $ 1 $ 1 $ 3
v3.24.0.1
Significant Accounting Policies (Uncollectible Expense) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Uncollectible expense $ 55 $ 55 $ 55
DTE Electric      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Uncollectible expense $ 38 $ 35 $ 36
v3.24.0.1
Significant Accounting Policies (Intangible Assets) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]    
Accumulated Amortization $ (103) $ (88)
Indefinite-lived Intangible Assets [Line Items]    
Intangible assets not subject to amortization 13 8
Long-term intangible assets    
Gross Carrying Value 259 254
Accumulated Amortization (103) (88)
Net Carrying Value 156 166
Carbon offsets    
Indefinite-lived Intangible Assets [Line Items]    
Intangible assets not subject to amortization 10 6
Renewable energy credits    
Indefinite-lived Intangible Assets [Line Items]    
Intangible assets not subject to amortization 2 2
Other    
Indefinite-lived Intangible Assets [Line Items]    
Intangible assets not subject to amortization 1 0
Contract intangibles    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 246 246
Accumulated Amortization (103) (88)
Net Carrying Value 143 158
Long-term intangible assets    
Accumulated Amortization $ (103) $ (88)
Contract intangibles | Minimum    
Finite-Lived Intangible Assets [Line Items]    
Useful Lives 12 years  
Contract intangibles | Maximum    
Finite-Lived Intangible Assets [Line Items]    
Useful Lives 26 years  
v3.24.0.1
Significant Accounting Policies (Future Amortization Expense Intangible Assets) (Details)
$ in Millions
Dec. 31, 2023
USD ($)
Estimated amortization expense  
2024 $ 16
2025 16
2026 14
2027 14
2028 $ 14
v3.24.0.1
Significant Accounting Policies (Cloud Computing Costs) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Significant Accounting Policies [Line Items]      
Amortization expense of capitalized cloud computing costs $ 10 $ 4 $ 1
Gross value of capitalized cloud computing costs 56 42  
Accumulated amortization of capitalized cloud computing costs 15 5  
DTE Electric      
Significant Accounting Policies [Line Items]      
Amortization expense of capitalized cloud computing costs 8 3 $ 1
Gross value of capitalized cloud computing costs 44 33  
Accumulated amortization of capitalized cloud computing costs $ 12 $ 4  
v3.24.0.1
Discontinued Operations (Financial Results of Discontinued Operations) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Other (Income) and Deductions      
Net Income from Discontinued Operations, Net of Taxes $ 0 $ 0 $ 117
Less: Net Income Attributable to Noncontrolling Interests 0 0 6
Net Income from Discontinued Operations $ 0 $ 0 111
Transaction costs     59
DT Midstream | Discontinued operations, spinoff      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Operating Revenues — Non-utility operations     405
Operating Expenses      
Cost of gas and other — non-utility     15
Operation and maintenance     123
Depreciation and amortization     82
Taxes other than income     13
Asset (gains) losses and impairments, net     17
Operating Expenses     250
Operating Income     155
Other (Income) and Deductions      
Interest expense     50
Interest income     (4)
Other income     (62)
Other (Income) and Deductions     (16)
Income from Discontinued Operations Before Income Taxes     171
Income Tax Expense     54
Net Income from Discontinued Operations, Net of Taxes     117
Less: Net Income Attributable to Noncontrolling Interests     6
Net Income from Discontinued Operations     $ 111
v3.24.0.1
Discontinued Operations (Significant Non-cash Items, Capital Expenditures, and Significant Financing Activities of Discontinued Operations) (Details) - DT Midstream - Discontinued operations, spinoff
$ in Millions
 12 Months Ended
Dec. 31, 2021
USD ($)
Operating Activities  
Depreciation and amortization $ 82
Deferred income taxes 53
Equity earnings of equity method investees (59)
Asset (gains) losses and impairments, net 19
Investing Activities  
Plant and equipment expenditures — non-utility $ (60)
v3.24.0.1
Revenue (Disaggregation of Revenue by Segment) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disaggregation of Revenue [Line Items]      
Revenues $ 12,745 $ 19,228 $ 14,964
Operating Segments | Electric      
Disaggregation of Revenue [Line Items]      
Revenues 5,818 6,412 5,821
Operating Segments | Electric | Residential      
Disaggregation of Revenue [Line Items]      
Revenues 2,847 2,911 2,926
Operating Segments | Electric | Commercial      
Disaggregation of Revenue [Line Items]      
Revenues 2,114 1,958 1,908
Operating Segments | Electric | Industrial      
Disaggregation of Revenue [Line Items]      
Revenues 732 659 628
Operating Segments | Electric | Other      
Disaggregation of Revenue [Line Items]      
Revenues 125 884 359
Operating Segments | Electric | Other | DTE Sustainable Generation      
Disaggregation of Revenue [Line Items]      
Revenues 14 15 12
Operating Segments | Gas      
Disaggregation of Revenue [Line Items]      
Revenues 1,748 1,924 1,553
Operating Segments | Gas | Gas sales      
Disaggregation of Revenue [Line Items]      
Revenues 1,324 1,442 1,058
Operating Segments | Gas | End User Transportation      
Disaggregation of Revenue [Line Items]      
Revenues 250 264 233
Operating Segments | Gas | Intermediate Transportation      
Disaggregation of Revenue [Line Items]      
Revenues 85 81 82
Operating Segments | Gas | Other      
Disaggregation of Revenue [Line Items]      
Revenues 89 137 180
Operating Segments | DTE Vantage      
Disaggregation of Revenue [Line Items]      
Revenues 809 848 1,482
Operating Segments | Energy Trading      
Disaggregation of Revenue [Line Items]      
Revenues $ 4,612 $ 10,308 $ 6,831
v3.24.0.1
Revenue (Revenues Outside the Scope of Topic 606) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disaggregation of Revenue [Line Items]      
Leases $ 59 $ 82 $ 198
Operating Segments      
Disaggregation of Revenue [Line Items]      
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Regulated and Unregulated Operating Revenue Regulated and Unregulated Operating Revenue Regulated and Unregulated Operating Revenue
Operating Segments | Electric      
Disaggregation of Revenue [Line Items]      
Alternative Revenue Program $ 36 $ 35 $ 36
Other revenues 22 19 19
Operating Segments | Gas      
Disaggregation of Revenue [Line Items]      
Alternative Revenue Program 16 9 10
Other revenues 8 7 6
Operating Segments | DTE Vantage      
Disaggregation of Revenue [Line Items]      
Leases 59 82 103
Operating Segments | Energy Trading      
Disaggregation of Revenue [Line Items]      
Derivatives $ 3,436 $ 8,489 $ 5,603
v3.24.0.1
Revenue (Details Textuals)
 12 Months Ended
Dec. 31, 2023
DTE Vantage  
Revenue from External Customer [Line Items]  
Payment terms 30 days
v3.24.0.1
Revenue (Deferred Revenue) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Contract Liability [Roll Forward]    
Beginning Balance $ 94 $ 78
Increases due to cash received or receivable, excluding amounts recognized as revenue during the period 103 91
Revenue recognized that was included in the deferred revenue balance at the beginning of the period (91) (75)
Ending Balance $ 106 $ 94
v3.24.0.1
Revenue (Expected Recognition of Deferred Revenue) (Details) - Deferred revenue
$ in Millions
Dec. 31, 2023
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 106
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 103
Remaining performance obligation, expected timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 1
Remaining performance obligation, expected timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 1
Remaining performance obligation, expected timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 1
Remaining performance obligation, expected timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 0
Remaining performance obligation, expected timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 0
Remaining performance obligation, expected timing of satisfaction
v3.24.0.1
Revenue (Expected Recognition of Deferred Revenue for Fixed Consideration) (Details) - Fixed Consideration
$ in Millions
Dec. 31, 2023
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 999
DTE Electric  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation 8
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 245
Remaining performance obligation, expected timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | DTE Electric  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 7
Remaining performance obligation, expected timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 191
Remaining performance obligation, expected timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 | DTE Electric  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 0
Remaining performance obligation, expected timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 109
Remaining performance obligation, expected timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | DTE Electric  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 0
Remaining performance obligation, expected timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 76
Remaining performance obligation, expected timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 | DTE Electric  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 0
Remaining performance obligation, expected timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 58
Remaining performance obligation, expected timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 | DTE Electric  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 0
Remaining performance obligation, expected timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 320
Remaining performance obligation, expected timing of satisfaction
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01 | DTE Electric  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 1
Remaining performance obligation, expected timing of satisfaction
v3.24.0.1
Property, Plant, and Equipment (Summary of Property by Classification) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Property, Plant, and Equipment [Line Items]    
Property, plant, and equipment $ 37,274 $ 39,346
Accumulated depreciation and amortization (9,105) (10,579)
Net property, plant, and equipment 28,169 28,767
DTE Vantage    
Property, Plant, and Equipment [Line Items]    
Property, plant, and equipment 1,075 1,059
Accumulated depreciation and amortization (479) (469)
Other    
Property, Plant, and Equipment [Line Items]    
Property, plant, and equipment 234 179
Accumulated depreciation and amortization (66) (61)
DTE Electric    
Property, Plant, and Equipment [Line Items]    
Property, plant, and equipment 27,936 30,591
Accumulated depreciation and amortization (6,570) (8,095)
Net property, plant, and equipment 21,366 22,496
DTE Electric | Nuclear    
Property, Plant, and Equipment [Line Items]    
Property, plant, and equipment 3,812 3,684
Accumulated depreciation and amortization (479) (428)
DTE Electric | Renewables    
Property, Plant, and Equipment [Line Items]    
Property, plant, and equipment 3,074 2,567
Accumulated depreciation and amortization (524) (426)
DTE Electric | Fossil and other generation    
Property, Plant, and Equipment [Line Items]    
Property, plant, and equipment 4,157 8,789
Accumulated depreciation and amortization (1,393) (3,352)
DTE Electric | Distribution    
Property, Plant, and Equipment [Line Items]    
Property, plant, and equipment 13,673 12,502
Accumulated depreciation and amortization (3,205) (3,040)
DTE Electric | Other    
Property, Plant, and Equipment [Line Items]    
Property, plant, and equipment 3,220 3,049
Accumulated depreciation and amortization (969) (849)
DTE Gas    
Property, Plant, and Equipment [Line Items]    
Property, plant, and equipment 8,029 7,517
Accumulated depreciation and amortization (1,990) (1,954)
DTE Gas | Distribution    
Property, Plant, and Equipment [Line Items]    
Property, plant, and equipment 5,838 5,376
Accumulated depreciation and amortization (1,365) (1,330)
DTE Gas | Storage    
Property, Plant, and Equipment [Line Items]    
Property, plant, and equipment 578 607
Accumulated depreciation and amortization (132) (163)
DTE Gas | Transmission and other    
Property, Plant, and Equipment [Line Items]    
Property, plant, and equipment 1,613 1,534
Accumulated depreciation and amortization $ (493) $ (461)
v3.24.0.1
Property, Plant, and Equipment (Schedule of AFUDC and Capitalized Interest Rates (Details)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Property, Plant, and Equipment [Line Items]      
Non-regulated businesses capitalized interest 3.00% 3.00% 3.30%
DTE Electric      
Property, Plant, and Equipment [Line Items]      
AFUDC 5.53% 5.46% 5.46%
DTE Gas      
Property, Plant, and Equipment [Line Items]      
AFUDC 5.41% 5.41% 5.55%
v3.24.0.1
Property, Plant, and Equipment (Schedule of AFUDC and Interest Capitalized) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Property, Plant and Equipment [Abstract]      
Allowance for debt funds used during construction and interest capitalized $ 20 $ 13 $ 12
Allowance for equity funds used during construction 42 29 27
Total 62 42 39
DTE Electric      
Property, Plant, and Equipment [Line Items]      
Allowance for debt funds used during construction 15 11 11
Allowance for equity funds used during construction 40 26 25
Total $ 55 $ 37 $ 36
v3.24.0.1
Property, Plant, and Equipment (Details Textuals)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Minimum | Non-utility      
Public Utility Property, Plant, and Equipment [Line Items]      
Property plant and equipment, useful life 3 years    
Minimum | Capitalized software      
Public Utility Property, Plant, and Equipment [Line Items]      
Property plant and equipment, useful life 3 years    
Maximum | Non-utility      
Public Utility Property, Plant, and Equipment [Line Items]      
Property plant and equipment, useful life 50 years    
Maximum | Capitalized software      
Public Utility Property, Plant, and Equipment [Line Items]      
Property plant and equipment, useful life 15 years    
DTE Electric | Minimum | Other      
Public Utility Property, Plant, and Equipment [Line Items]      
Property plant and equipment, useful life 3 years    
DTE Electric | Minimum | Capitalized software      
Public Utility Property, Plant, and Equipment [Line Items]      
Property plant and equipment, useful life 3 years    
DTE Electric | Maximum | Other      
Public Utility Property, Plant, and Equipment [Line Items]      
Property plant and equipment, useful life 80 years    
DTE Electric | Maximum | Capitalized software      
Public Utility Property, Plant, and Equipment [Line Items]      
Property plant and equipment, useful life 15 years    
DTE Gas | Minimum | Transmission and other      
Public Utility Property, Plant, and Equipment [Line Items]      
Property plant and equipment, useful life 3 years    
DTE Gas | Maximum | Transmission and other      
Public Utility Property, Plant, and Equipment [Line Items]      
Property plant and equipment, useful life 80 years    
DTE Electric      
Public Utility Property, Plant, and Equipment [Line Items]      
Composite depreciation rate for plants in service 4.40% 4.20% 4.20%
DTE Gas      
Public Utility Property, Plant, and Equipment [Line Items]      
Composite depreciation rate for plants in service 2.90% 2.90% 2.90%
v3.24.0.1
Property, Plant, and Equipment (Average Estimated Useful Life of Each Major Class) (Details)
 12 Months Ended
Dec. 31, 2023
DTE Electric  
Public Utility Property, Plant, and Equipment [Line Items]  
Useful Life - Generation 34 years
Useful Life - Distribution 38 years
DTE Gas  
Public Utility Property, Plant, and Equipment [Line Items]  
Useful Life - Distribution 49 years
Useful Life - Storage 58 years
v3.24.0.1
Property, Plant, and Equipment (Depreciation and Amortization) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Property, Plant, and Equipment [Line Items]      
Property, plant, and equipment $ 1,239 $ 1,148 $ 1,095
Regulatory assets and liabilities 344 297 259
Intangible assets 15 16 16
Other 8 7 7
Depreciation and amortization 1,606 1,468 1,377
DTE Electric      
Property, Plant, and Equipment [Line Items]      
Property, plant, and equipment 1,029 951 890
Regulatory assets and liabilities 292 248 214
Other 5 5 5
Depreciation and amortization $ 1,326 $ 1,204 $ 1,109
v3.24.0.1
Property, Plant, and Equipment (Capitalized Software) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Property, Plant, and Equipment [Line Items]      
Amortization expense of capitalized software $ 189 $ 159 $ 145
Gross carrying value of capitalized software 940 796  
Accumulated amortization of capitalized software 427 406  
DTE Electric      
Property, Plant, and Equipment [Line Items]      
Amortization expense of capitalized software 172 146 $ 132
Gross carrying value of capitalized software 849 692  
Accumulated amortization of capitalized software $ 369 $ 343  
v3.24.0.1
Jointly-Owned Utility Plant (Details Textuals)
Dec. 31, 2023
plant
Belle River Unit 1  
Jointly-Owned Utility Plant Interests [Line Items]  
Percent of the total capacity and energy of the plant 19.00%
Ludington Hydroelectric Pumped Storage  
Jointly-Owned Utility Plant Interests [Line Items]  
Percent of the total capacity and energy of the plant 51.00%
DTE Electric  
Jointly-Owned Utility Plant Interests [Line Items]  
Number of power plants owned 2
v3.24.0.1
Jointly-Owned Utility Plant (Ownership Information) (Details) - DTE Electric
$ in Millions
Dec. 31, 2023
USD ($)
MW
Nov. 30, 2022
Belle River    
Jointly-Owned Utility Plant Interests [Line Items]    
Total plant capacity (MW) | MW 1,270  
Ownership interest 81.00%  
Investment in Property, plant, and equipment (in millions) $ 2,000  
Accumulated depreciation (in millions) $ 1,091  
Ludington Hydroelectric Pumped Storage    
Jointly-Owned Utility Plant Interests [Line Items]    
Total plant capacity (MW) | MW 2,290  
Ownership interest 49.00% 49.00%
Investment in Property, plant, and equipment (in millions) $ 652  
Accumulated depreciation (in millions) $ 149  
v3.24.0.1
Asset Retirement Obligations (Rollforward) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]      
Asset retirement obligations at January 1 $ 3,460 $ 3,162 $ 2,829
Accretion 198 184 167
Liabilities incurred 7 24 28
Liabilities settled (96) (7) (30)
Revision in estimated cash flows (13) 97 168
Asset retirement obligations at December 31 3,556 3,460 3,162
DTE Electric      
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]      
Asset retirement obligations at January 1 3,221 2,932 2,607
Accretion 185 172 155
Liabilities incurred 4 22 29
Liabilities settled (81) (2) (27)
Revision in estimated cash flows (3) 97 168
Asset retirement obligations at December 31 $ 3,326 $ 3,221 $ 2,932
v3.24.0.1
Asset Retirement Obligations (Details Textuals) - Fermi 2
Dec. 31, 2023
USD ($)
Asset Retirement Obligations [Line Items]  
Nuclear decommissioning liabilities funded through surcharge and included in ARO balance $ 2,700,000,000
Liabilities balance upon completion of decommissioning $ 0
v3.24.0.1
Regulatory Matters (Regulation and Assets and Liabilities) (Details)
Dec. 31, 2023
Dec. 01, 2023
Other postretirement costs | DTE Electric    
Public Utilities, General Disclosures [Line Items]    
Amortization period for regulatory liability   7 years
Customer360 deferred costs    
Public Utilities, General Disclosures [Line Items]    
Amortization period for regulatory asset 15 years  
Advanced distribution management system costs    
Public Utilities, General Disclosures [Line Items]    
Amortization period for regulatory asset 15 years  
Nuclear performance evaluation and review committee tracker    
Public Utilities, General Disclosures [Line Items]    
Amortization period for regulatory asset 5 years  
Securitized regulatory asset, tree trim surge costs | Maximum    
Public Utilities, General Disclosures [Line Items]    
Amortization period for regulatory asset 5 years  
Securitized regulatory asset, River Rouge costs | Maximum    
Public Utilities, General Disclosures [Line Items]    
Amortization period for regulatory asset 14 years  
Securitized regulatory asset, St Clair and Trenton Channel costs | Maximum    
Public Utilities, General Disclosures [Line Items]    
Amortization period for regulatory asset 15 years  
Deferred environmental costs    
Public Utilities, General Disclosures [Line Items]    
Amortization period for regulatory asset 10 years  
v3.24.0.1
Regulatory Matters (Schedule of Regulatory Assets) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Regulatory Assets [Line Items]    
Regulatory assets $ 6,317 $ 4,336
Less amount included in Current Assets (108) (450)
Regulatory assets, noncurrent 6,209 3,886
Securitized regulatory assets 758 206
Recoverable undepreciated costs on retiring plants    
Regulatory Assets [Line Items]    
Regulatory assets 2,736 594
Pension    
Regulatory Assets [Line Items]    
Regulatory assets 1,421 1,362
Other postretirement costs    
Regulatory Assets [Line Items]    
Regulatory assets 163 172
Fermi 2 asset retirement obligation    
Regulatory Assets [Line Items]    
Regulatory assets 952 972
Removal costs asset    
Regulatory Assets [Line Items]    
Regulatory assets 223 19
Enhanced tree trimming program deferred costs    
Regulatory Assets [Line Items]    
Regulatory assets 157 90
Recoverable Michigan income taxes    
Regulatory Assets [Line Items]    
Regulatory assets 133 148
Energy Waste Reduction incentive    
Regulatory Assets [Line Items]    
Regulatory assets 90 88
Recoverable income taxes related to AFUDC equity    
Regulatory Assets [Line Items]    
Regulatory assets 89 76
Accrued PSCR/GCR revenue    
Regulatory Assets [Line Items]    
Regulatory assets 55 450
Deferred environmental costs    
Regulatory Assets [Line Items]    
Regulatory assets 46 46
Unamortized loss on reacquired debt    
Regulatory Assets [Line Items]    
Regulatory assets 41 45
Customer360 deferred costs    
Regulatory Assets [Line Items]    
Regulatory assets 38 42
Advanced distribution management system costs    
Regulatory Assets [Line Items]    
Regulatory assets 18 14
Deferred pension costs    
Regulatory Assets [Line Items]    
Regulatory assets 16 63
Nuclear performance evaluation and review committee tracker    
Regulatory Assets [Line Items]    
Regulatory assets 6 26
Other    
Regulatory Assets [Line Items]    
Regulatory assets 133 129
DTE Electric    
Regulatory Assets [Line Items]    
Regulatory assets 5,695 3,640
Less amount included in Current Assets (99) (421)
Regulatory assets, noncurrent 5,596 3,219
Securitized regulatory assets 758 206
DTE Electric | Recoverable undepreciated costs on retiring plants    
Regulatory Assets [Line Items]    
Regulatory assets 2,736 594
DTE Electric | Pension    
Regulatory Assets [Line Items]    
Regulatory assets 1,045 997
DTE Electric | Other postretirement costs    
Regulatory Assets [Line Items]    
Regulatory assets 67 60
DTE Electric | Fermi 2 asset retirement obligation    
Regulatory Assets [Line Items]    
Regulatory assets 952 972
DTE Electric | Removal costs asset    
Regulatory Assets [Line Items]    
Regulatory assets 223 19
DTE Electric | Enhanced tree trimming program deferred costs    
Regulatory Assets [Line Items]    
Regulatory assets 157 90
DTE Electric | Recoverable Michigan income taxes    
Regulatory Assets [Line Items]    
Regulatory assets 110 121
DTE Electric | Energy Waste Reduction incentive    
Regulatory Assets [Line Items]    
Regulatory assets 72 71
DTE Electric | Recoverable income taxes related to AFUDC equity    
Regulatory Assets [Line Items]    
Regulatory assets 80 68
DTE Electric | Accrued PSCR/GCR revenue    
Regulatory Assets [Line Items]    
Regulatory assets 55 421
DTE Electric | Deferred environmental costs    
Regulatory Assets [Line Items]    
Regulatory assets 0 0
DTE Electric | Unamortized loss on reacquired debt    
Regulatory Assets [Line Items]    
Regulatory assets 31 34
DTE Electric | Customer360 deferred costs    
Regulatory Assets [Line Items]    
Regulatory assets 38 42
DTE Electric | Advanced distribution management system costs    
Regulatory Assets [Line Items]    
Regulatory assets 18 14
DTE Electric | Deferred pension costs    
Regulatory Assets [Line Items]    
Regulatory assets 10 41
DTE Electric | Nuclear performance evaluation and review committee tracker    
Regulatory Assets [Line Items]    
Regulatory assets 6 26
DTE Electric | Other    
Regulatory Assets [Line Items]    
Regulatory assets $ 95 $ 70
v3.24.0.1
Regulatory Matters (Schedule of Regulatory Liabilities) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Regulatory Liabilities [Line Items]    
Regulatory liabilities $ 2,674 $ 2,707
Less amount included in Current Liabilities (71) (34)
Regulatory liabilities, noncurrent 2,603 2,673
Refundable federal income taxes    
Regulatory Liabilities [Line Items]    
Regulatory liabilities 1,823 1,908
Removal costs liability    
Regulatory Liabilities [Line Items]    
Regulatory liabilities 342 371
Negative other postretirement offset    
Regulatory Liabilities [Line Items]    
Regulatory liabilities 210 191
Non-service pension and other postretirement costs    
Regulatory Liabilities [Line Items]    
Regulatory liabilities 199 154
Accrued GCR refund    
Regulatory Liabilities [Line Items]    
Regulatory liabilities 21 0
Renewable energy    
Regulatory Liabilities [Line Items]    
Regulatory liabilities 7 21
Other    
Regulatory Liabilities [Line Items]    
Regulatory liabilities 72 62
DTE Electric    
Regulatory Liabilities [Line Items]    
Regulatory liabilities 1,759 1,811
Less amount included in Current Liabilities (49) (33)
Regulatory liabilities, noncurrent 1,710 1,778
DTE Electric | Refundable federal income taxes    
Regulatory Liabilities [Line Items]    
Regulatory liabilities 1,463 1,534
DTE Electric | Removal costs liability    
Regulatory Liabilities [Line Items]    
Regulatory liabilities 0 0
DTE Electric | Negative other postretirement offset    
Regulatory Liabilities [Line Items]    
Regulatory liabilities 142 128
DTE Electric | Non-service pension and other postretirement costs    
Regulatory Liabilities [Line Items]    
Regulatory liabilities 84 73
DTE Electric | Accrued GCR refund    
Regulatory Liabilities [Line Items]    
Regulatory liabilities 0 0
DTE Electric | Renewable energy    
Regulatory Liabilities [Line Items]    
Regulatory liabilities 7 21
DTE Electric | Other    
Regulatory Liabilities [Line Items]    
Regulatory liabilities $ 63 $ 55
v3.24.0.1
Regulatory Matters (Ludington Accounting Application) (Details) - Ludington Hydroelectric Pumped Storage
Dec. 31, 2023
Nov. 30, 2022
DTE Electric    
Jointly-Owned Utility Plant Interests [Line Items]    
Ownership interest 49.00% 49.00%
Consumers Energy Company    
Jointly-Owned Utility Plant Interests [Line Items]    
Ownership interest   51.00%
v3.24.0.1
Regulatory Matters (2023 Electric Rate Case Filing) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 01, 2023
Feb. 10, 2023
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Public Utilities, General Disclosures [Line Items]            
Regulatory liability         $ 2,674 $ 2,707
Other postretirement costs            
Public Utilities, General Disclosures [Line Items]            
Regulatory liability         210 191
DTE Electric            
Public Utilities, General Disclosures [Line Items]            
Regulatory liability         1,759 1,811
DTE Electric | Other postretirement costs            
Public Utilities, General Disclosures [Line Items]            
Regulatory liability         $ 142 $ 128
Amortization period for regulatory liability 7 years          
MPSC | DTE Electric            
Public Utilities, General Disclosures [Line Items]            
Approved return on equity, percent         9.90%  
2023 DTE Electric Rate Case Filing | MPSC | DTE Electric            
Public Utilities, General Disclosures [Line Items]            
Requested rate increase   $ 622        
Approved return on equity, percent 9.90% 9.90%        
Requested return on equity, percent   10.25%        
Approved revenue increase $ 368          
Estimated reduction to Operations and maintenance expense for regulatory liability amortization 18          
Disallowed capital expenditures $ 25          
2023 DTE Electric Rate Case Filing | MPSC | DTE Electric | Other postretirement costs            
Public Utilities, General Disclosures [Line Items]            
Amortization period for regulatory liability 7 years          
2023 DTE Electric Rate Case Filing | MPSC | DTE Electric | Recovery Mechanism, Infrastructure Recovery            
Public Utilities, General Disclosures [Line Items]            
Recovery mechanism surcharge period 2 years          
2023 DTE Electric Rate Case Filing | MPSC | DTE Electric | Recovery Mechanism, Infrastructure Recovery | Forecast            
Public Utilities, General Disclosures [Line Items]            
Recovery mechanism surcharge, expected annual revenue increase     $ 25 $ 4    
v3.24.0.1
Regulatory Matters (2023 Securitization Filing) (Details)
$ in Millions
Dec. 31, 2023
USD ($)
Nov. 30, 2023
USD ($)
Nov. 01, 2023
USD ($)
tranche
Jun. 22, 2023
USD ($)
Apr. 03, 2023
USD ($)
Dec. 31, 2022
USD ($)
Public Utilities, General Disclosures [Line Items]            
Face amount issued $ 3,197          
Securitized regulatory assets 758         $ 206
DTE Electric            
Public Utilities, General Disclosures [Line Items]            
Securitized regulatory assets $ 758         $ 206
DTE Electric | Securitization Bonds | November 2023 5.97% Securitization Bonds            
Public Utilities, General Disclosures [Line Items]            
Face amount issued   $ 301        
DTE Electric | Securitization Bonds | November 2023 6.09% Securitization Bonds            
Public Utilities, General Disclosures [Line Items]            
Face amount issued   $ 301        
2023 Securitization Filing | MPSC | DTE Electric            
Public Utilities, General Disclosures [Line Items]            
Requested securitization of qualified costs         $ 496  
Authorized issuance of securitization bonds of qualified costs, maximum       $ 602    
Securitized regulatory assets     $ 594      
2023 Securitization Filing | MPSC | DTE Electric | Maximum | Securitized regulatory asset, St Clair and Trenton Channel costs, tranche one            
Public Utilities, General Disclosures [Line Items]            
Amortization period for regulatory asset     10 years      
2023 Securitization Filing | MPSC | DTE Electric | Maximum | Securitized regulatory asset, St Clair and Trenton Channel costs, tranche two            
Public Utilities, General Disclosures [Line Items]            
Amortization period for regulatory asset     15 years      
2023 Securitization Filing | MPSC | DTE Electric | Securitization Bonds            
Public Utilities, General Disclosures [Line Items]            
Face amount issued     $ 602      
Number of tranches | tranche     2      
2023 Securitization Filing | MPSC | DTE Electric | Securitization Bonds | November 2023 5.97% Securitization Bonds            
Public Utilities, General Disclosures [Line Items]            
Face amount issued     $ 301      
2023 Securitization Filing | MPSC | DTE Electric | Securitization Bonds | November 2023 6.09% Securitization Bonds            
Public Utilities, General Disclosures [Line Items]            
Face amount issued     $ 301      
2023 Securitization Filing | MPSC | DTE Electric | Net book value of on retiring plants            
Public Utilities, General Disclosures [Line Items]            
Authorized issuance of securitization bonds of qualified costs, maximum       594    
2023 Securitization Filing | MPSC | DTE Electric | Other            
Public Utilities, General Disclosures [Line Items]            
Authorized issuance of securitization bonds of qualified costs, maximum       $ 8    
v3.24.0.1
Regulatory Matters (Integrated Resource Plan) (Details) - USD ($)
$ in Millions
 1 Months Ended
Jul. 26, 2023
Nov. 30, 2022
Dec. 31, 2023
Sep. 30, 2023
Dec. 31, 2022
Public Utilities, General Disclosures [Line Items]          
Reclassification to long-term regulatory assets     $ 6,209   $ 3,886
Reclassification from property, plant, and equipment     (28,169)   (28,767)
DTE Electric          
Public Utilities, General Disclosures [Line Items]          
Reclassification to long-term regulatory assets     5,596   3,219
Reclassification from property, plant, and equipment     $ (21,366)   $ (22,496)
Integrated Resource Plan | MPSC | DTE Electric          
Public Utilities, General Disclosures [Line Items]          
Period over which to meet the needs of customers   20 years      
Authorized securitization of plant costs $ 1,050        
Committed total donations 38        
Integrated Resource Plan | MPSC | DTE Electric | Organizations providing energy support to low-income customers          
Public Utilities, General Disclosures [Line Items]          
Committed annual donations 2        
Integrated Resource Plan | MPSC | DTE Electric | Organizations providing customers with bill assistance          
Public Utilities, General Disclosures [Line Items]          
Committed total donations 30        
Integrated Resource Plan | MPSC | DTE Electric | Organizations providing customers with bill assistance | Minimum          
Public Utilities, General Disclosures [Line Items]          
Committed annual donations 1        
Integrated Resource Plan | MPSC | DTE Electric | Belle River coal handling assets          
Public Utilities, General Disclosures [Line Items]          
Authorized securitization of plant costs 200        
Integrated Resource Plan | MPSC | DTE Electric | Monroe assets          
Public Utilities, General Disclosures [Line Items]          
Authorized securitization of plant costs 845        
Integrated Resource Plan | MPSC | DTE Electric | Monroe assets | Recoverable undepreciated costs on retiring plants          
Public Utilities, General Disclosures [Line Items]          
Requested regulatory asset $ 1,600        
Requested return on equity, percent 9.00%        
Amortization period for regulatory asset 15 years        
Integrated Resource Plan | MPSC | DTE Electric | Adjustment          
Public Utilities, General Disclosures [Line Items]          
Reclassification to long-term regulatory assets       $ 2,700  
Reclassification from property, plant, and equipment       $ 2,700  
v3.24.0.1
Regulatory Matters (2024 Gas Rate Case Filing) (Details) - MPSC - DTE Gas - USD ($)
$ in Millions
 12 Months Ended
Jan. 08, 2024
Dec. 31, 2023
Public Utilities, General Disclosures [Line Items]    
Approved return on equity, percent   9.90%
2024 DTE Gas Rate Case Filing | Subsequent Event    
Public Utilities, General Disclosures [Line Items]    
Requested rate increase $ 266  
Approved return on equity, percent 9.90%  
Requested return on equity, percent 10.25%  
2024 DTE Gas Rate Case Filing | Subsequent Event | Recovery Mechanism, Customer Rate Increase    
Public Utilities, General Disclosures [Line Items]    
Requested rate increase $ 160  
2024 DTE Gas Rate Case Filing | Subsequent Event | Recovery Mechanism, Infrastructure Recovery    
Public Utilities, General Disclosures [Line Items]    
Requested rate increase $ 106  
v3.24.0.1
Income Taxes (Details Textuals) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Operating Loss Carryforwards [Line Items]      
Accounts receivable $ 1,632,000,000 $ 2,038,000,000  
Deferred tax asset, general business tax credit carryforwards 1,500,000,000    
State and local net operating loss carryforwards 76,000,000 97,000,000  
Valuation allowance 39,000,000 58,000,000  
Decrease in unrecognized tax benefits due to an audit settlement 10,000,000 0 $ 0
Decrease in unrecognized tax benefits due to recognition of a federal tax claim 5,000,000 2,000,000 0
Reduction to income tax expense due to recognition of unrecognized tax benefits 13,000,000    
Accrued interest on income taxes 0 5,000,000  
Penalties accrued on income taxes 0 0  
State and local net operating loss carryforwards      
Operating Loss Carryforwards [Line Items]      
Valuation allowance 19,000,000 31,000,000  
Federal      
Operating Loss Carryforwards [Line Items]      
Net operating loss carryforward 964,000,000    
DTE Electric      
Operating Loss Carryforwards [Line Items]      
State and local net operating loss carryforwards 49,000,000 38,000,000  
Valuation allowance 0 0  
Decrease in unrecognized tax benefits due to an audit settlement 13,000,000 0 0
Reduction to income tax expense due to recognition of unrecognized tax benefits 10,000,000    
Interest expense on income taxes 0 1,000,000 $ 1,000,000
Accrued interest on income taxes 0 8,000,000  
Penalties accrued on income taxes 0 0  
DTE Electric | General Business Credits      
Operating Loss Carryforwards [Line Items]      
Tax credit carryforwards 572,000,000    
DTE Electric | Federal      
Operating Loss Carryforwards [Line Items]      
Net operating loss carryforward 338,000,000    
DTE Electric | Federal Income Taxes | DTE Energy      
Operating Loss Carryforwards [Line Items]      
Accounts receivable $ 7,000,000 $ 1,000,000  
v3.24.0.1
Income Taxes (Reconciliation of Income Tax Expense to the Statutory Federal Income Tax Rate) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Entity Information [Line Items]      
Income Before Income Taxes $ 1,566 $ 1,112 $ 656
Income tax expense at 21% statutory rate 329 234 138
Production tax credits (91) (91) (138)
TCJA regulatory liability amortization (63) (155) (103)
Investment tax credits (44) (1) (3)
Enactment of state income tax legislation, net of federal benefit (1) 0 8
State deferred tax remeasurement due to separation of DT Midstream, net of federal benefit 0 0 (85)
Valuation allowance on charitable contribution carryforwards 0 9 18
State and local income taxes, excluding items above, net of federal benefit 59 42 30
Other, net (20) (9) 5
Income Tax Expense (Benefit) $ 169 $ 29 $ (130)
Effective income tax rate 10.80% 2.60% (19.90%)
DTE Electric      
Entity Information [Line Items]      
Income Before Income Taxes $ 850 $ 981 $ 970
Income tax expense at 21% statutory rate 179 206 204
Production tax credits (79) (83) (70)
TCJA regulatory liability amortization (53) (145) (73)
State and local income taxes, excluding items above, net of federal benefit 45 56 54
Other, net (14) (8) (11)
Income Tax Expense (Benefit) $ 78 $ 26 $ 104
Effective income tax rate 9.20% 2.70% 10.70%
v3.24.0.1
Income Taxes (Components of Income Tax Expense) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Current income tax benefit      
Federal $ (10) $ (13) $ (33)
State and other income tax (2) (2) (12)
Total current income taxes (12) (15) (45)
Deferred income tax expense (benefit)      
Federal 103 (13) (42)
State and other income tax 78 57 (43)
Total deferred income taxes 181 44 (85)
Income Tax Expense (Benefit) 169 29 (130)
DTE Electric      
Current income tax benefit      
Federal 1 1 (11)
State and other income tax (5) 0 (7)
Total current income taxes (4) 1 (18)
Deferred income tax expense (benefit)      
Federal 19 (46) 47
State and other income tax 63 71 75
Total deferred income taxes 82 25 122
Income Tax Expense (Benefit) $ 78 $ 26 $ 104
v3.24.0.1
Income Taxes (Deferred Tax Assets (Liabilities)) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Components of Deferred Tax Assets and Liabilities [Abstract]    
Property, plant, and equipment $ (3,423) $ (3,897)
Regulatory assets and liabilities (1,158) (493)
Tax credit carryforwards 1,519 1,378
Pension and benefits 77 111
Federal net operating loss carryforward 202 266
State and local net operating loss carryforwards 76 97
Investments in equity method investees (33)  
Investments in equity method investees   65
Other 130 137
Deferred tax assets (liabilities) (2,610) (2,336)
Less: Valuation allowance (39) (58)
Long-term deferred income tax liabilities (2,649) (2,394)
Deferred income tax assets 2,415 2,317
Deferred income tax liabilities (5,064) (4,711)
DTE Electric    
Components of Deferred Tax Assets and Liabilities [Abstract]    
Property, plant, and equipment (2,693) (3,188)
Regulatory assets and liabilities (1,314) (589)
Tax credit carryforwards 572 487
Pension and benefits 69 103
Federal net operating loss carryforward 71 58
State and local net operating loss carryforwards 49 38
Investments in equity method investees 0  
Investments in equity method investees   0
Other 137 145
Deferred tax assets (liabilities) (3,109) (2,946)
Less: Valuation allowance 0 0
Long-term deferred income tax liabilities (3,109) (2,946)
Deferred income tax assets 1,202 1,081
Deferred income tax liabilities $ (4,311) $ (4,027)
v3.24.0.1
Income Taxes (Reconciliation of Unrecognized Tax Benefits) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Unrecognized tax benefits, beginning balance $ 13 $ 10 $ 10
Additions for tax positions of prior years 2 5 0
Reductions for tax positions of prior years (5) (2) 0
Settlements (10) 0 0
Unrecognized tax benefits, ending balance 0 13 10
DTE Electric      
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Unrecognized tax benefits, beginning balance 13 13 13
Settlements (13) 0 0
Unrecognized tax benefits, ending balance $ 0 $ 13 $ 13
v3.24.0.1
Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Basic Earnings per Share      
Net Income Attributable to DTE Energy Company — continuing operations $ 1,397 $ 1,083 $ 796
Less: Allocation of earnings to net restricted stock awards 3 3 2
Net income from continuing operations available to common shareholders — basic 1,394 1,080 794
Net Income Attributable to DTE Energy Company — discontinued operations 0 0 111
Net income available to common shareholders — basic $ 1,394 $ 1,080 $ 905
Average number of common shares outstanding — basic (in shares) 206.0 195.0 193.0
Income from continuing operations (in dollars per share) $ 6.77 $ 5.53 $ 4.11
Income (loss) from discontinued operations (in dollars per share) 0 0 0.57
Basic Earnings per Common Share (in dollars per share) $ 6.77 $ 5.53 $ 4.68
Diluted Earnings per Share      
Net Income Attributable to DTE Energy Company — continuing operations $ 1,397 $ 1,083 $ 796
Less: Allocation of earnings to net restricted stock awards 3 3 2
Net income from continuing operations available to common shareholders — diluted 1,394 1,080 794
Net Income Attributable to DTE Energy Company — discontinued operations 0 0 111
Net income available to common shareholders — diluted $ 1,394 $ 1,080 $ 905
Average number of common shares outstanding — basic (in shares) 206.0 195.0 193.0
Average dilutive equity units and performance share awards (in shares) 0.0 1.0 1.0
Average number of common shares outstanding — diluted (in shares) 206.0 196.0 194.0
Income from continuing operations (in dollars per share) $ 6.76 $ 5.52 $ 4.10
Income from discontinued operations (in dollars per share) 0 0 0.57
Diluted Earnings per Common Share (in dollars per share) $ 6.76 $ 5.52 $ 4.67
Antidilutive securities excluded from computation of earnings per share (in shares)     11.5
v3.24.0.1
Fair Value (Assets and Liabilities Recorded at Fair Value on a Recurring Basis) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Derivative assets    
Derivative assets, gross $ 1,197 $ 1,922
Derivative assets, netting $ (791) $ (1,489)
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Derivative Asset, Current, Derivative Asset, Noncurrent Derivative Asset, Current, Derivative Asset, Noncurrent
Derivative liabilities    
Derivative liabilities, gross $ (1,172) $ (2,169)
Derivative liabilities, netting 863 1,512
DTE Electric    
Assets    
Nuclear decommissioning trusts 2,041 1,825
Current liabilities    
Derivative liabilities    
Derivative liabilities, gross (847) (1,535)
Noncurrent liabilities    
Derivative liabilities    
Derivative liabilities, gross (325) (634)
Natural Gas    
Derivative assets    
Derivative assets, gross 637 744
Derivative assets, netting (416) (649)
Derivative liabilities    
Derivative liabilities, gross (615) (1,018)
Derivative liabilities, netting 429 645
Electricity    
Derivative assets    
Derivative assets, gross 421 963
Derivative assets, netting (243) (643)
Derivative liabilities    
Derivative liabilities, gross (388) (935)
Derivative liabilities, netting 297 665
Environmental & Other    
Derivative assets    
Derivative assets, gross 139 213
Derivative assets, netting (132) (196)
Derivative liabilities    
Derivative liabilities, gross (150) (214)
Derivative liabilities, netting 137 201
Cash equivalents | DTE Electric    
Assets    
Nuclear decommissioning trusts 34 42
Private equity and other | DTE Electric    
Assets    
Nuclear decommissioning trusts 312 262
Hedge Funds and Similar Investments | DTE Electric    
Assets    
Nuclear decommissioning trusts 184 119
Equity securities | DTE Electric    
Assets    
Nuclear decommissioning trusts 921 839
Fixed income securities | DTE Electric    
Assets    
Nuclear decommissioning trusts 590 563
Recurring    
Assets    
Cash equivalents 13 10
Derivative assets    
Derivative assets, netting (791) (1,489)
Derivative assets, net 406 433
Total assets 2,562 2,403
Derivative liabilities    
Derivative liabilities, netting 863 1,512
Total Liabilities (309) (657)
Net Assets (Liabilities) at end of period 2,253 1,746
Net Assets (Liabilities) at the end of the period, netting 72 23
Recurring | DTE Electric    
Assets    
Cash equivalents 11 9
Derivative assets    
Total assets 2,091 1,872
Recurring | Current assets    
Derivative assets    
Derivative assets, netting (613) (1,189)
Total assets 310 338
Recurring | Current assets | DTE Electric    
Derivative assets    
Total assets 18 20
Recurring | Noncurrent assets    
Derivative assets    
Derivative assets, netting (178) (300)
Total assets 2,252 2,065
Recurring | Noncurrent assets | DTE Electric    
Derivative assets    
Total assets 2,073 1,852
Recurring | Current liabilities    
Derivative liabilities    
Derivative liabilities, netting 670 1,193
Total Liabilities (177) (342)
Recurring | Noncurrent liabilities    
Derivative liabilities    
Derivative liabilities, netting 193 319
Total Liabilities (132) (315)
Recurring | Restricted cash    
Assets    
Cash equivalents 11 10
Recurring | Restricted cash | DTE Electric    
Assets    
Cash equivalents 11 9
Recurring | Natural Gas    
Derivative assets    
Derivative assets, netting (416) (649)
Derivative assets, net 221 95
Derivative liabilities    
Derivative liabilities, netting 429 645
Derivative liabilities, net (186) (373)
Recurring | Electricity    
Derivative assets    
Derivative assets, netting (243) (643)
Derivative assets, net 178 320
Derivative liabilities    
Derivative liabilities, netting 297 665
Derivative liabilities, net (91) (270)
Recurring | Environmental & Other    
Derivative assets    
Derivative assets, netting (132) (196)
Derivative assets, net 7 17
Derivative liabilities    
Derivative liabilities, netting 137 201
Derivative liabilities, net (13) (13)
Recurring | Other contracts    
Derivative assets    
Derivative assets, netting 0 (1)
Derivative assets, net 0 1
Derivative liabilities    
Derivative liabilities, netting 0 1
Derivative liabilities, net (19) (1)
Recurring | Derivative assets — FTRs | DTE Electric    
Derivative assets    
Derivative assets, net 7 11
Recurring | Cash equivalents    
Assets    
Nuclear decommissioning trusts 34 42
Other investments 37 72
Recurring | Cash equivalents | DTE Electric    
Assets    
Nuclear decommissioning trusts 34 42
Other investments 11 11
Recurring | Private equity and other    
Assets    
Nuclear decommissioning trusts 312 262
Recurring | Private equity and other | DTE Electric    
Assets    
Nuclear decommissioning trusts 312 262
Recurring | Hedge Funds and Similar Investments    
Assets    
Nuclear decommissioning trusts 184 119
Recurring | Hedge Funds and Similar Investments | DTE Electric    
Assets    
Nuclear decommissioning trusts 184 119
Recurring | Equity securities    
Assets    
Nuclear decommissioning trusts 921 839
Other investments 58 56
Recurring | Equity securities | DTE Electric    
Assets    
Nuclear decommissioning trusts 921 839
Other investments 21 16
Recurring | Fixed income securities    
Assets    
Nuclear decommissioning trusts 590 563
Other investments 7 7
Recurring | Fixed income securities | DTE Electric    
Assets    
Nuclear decommissioning trusts 590 563
Recurring | Level 1    
Assets    
Cash equivalents 13 10
Derivative assets    
Derivative assets, gross 241 426
Total assets 1,412 1,507
Derivative liabilities    
Total Liabilities (291) (297)
Net Assets (Liabilities) at end of period 1,121 1,210
Recurring | Level 1 | DTE Electric    
Assets    
Cash equivalents 11 9
Derivative assets    
Total assets 1,099 972
Recurring | Level 1 | Current assets    
Derivative assets    
Total assets 215 360
Recurring | Level 1 | Current assets | DTE Electric    
Derivative assets    
Total assets 11 9
Recurring | Level 1 | Noncurrent assets    
Derivative assets    
Total assets 1,197 1,147
Recurring | Level 1 | Noncurrent assets | DTE Electric    
Derivative assets    
Total assets 1,088 963
Recurring | Level 1 | Current liabilities    
Derivative liabilities    
Total Liabilities (240) (273)
Recurring | Level 1 | Noncurrent liabilities    
Derivative liabilities    
Total Liabilities (51) (24)
Recurring | Level 1 | Natural Gas    
Derivative assets    
Derivative assets, gross 241 426
Derivative liabilities    
Derivative liabilities, gross (291) (297)
Recurring | Level 1 | Electricity    
Derivative assets    
Derivative assets, gross 0 0
Derivative liabilities    
Derivative liabilities, gross 0 0
Recurring | Level 1 | Environmental & Other    
Derivative assets    
Derivative assets, gross 0 0
Derivative liabilities    
Derivative liabilities, gross 0 0
Recurring | Level 1 | Other contracts    
Derivative assets    
Derivative assets, gross 0 0
Derivative liabilities    
Derivative liabilities, gross 0 0
Recurring | Level 1 | Derivative assets — FTRs | DTE Electric    
Derivative assets    
Derivative assets, net 0 0
Recurring | Level 1 | Cash equivalents    
Assets    
Nuclear decommissioning trusts 34 42
Other investments 37 72
Recurring | Level 1 | Cash equivalents | DTE Electric    
Assets    
Nuclear decommissioning trusts 34 42
Other investments 11 11
Recurring | Level 1 | Private equity and other    
Assets    
Nuclear decommissioning trusts 0 0
Recurring | Level 1 | Private equity and other | DTE Electric    
Assets    
Nuclear decommissioning trusts 0 0
Recurring | Level 1 | Hedge Funds and Similar Investments    
Assets    
Nuclear decommissioning trusts 119 78
Recurring | Level 1 | Hedge Funds and Similar Investments | DTE Electric    
Assets    
Nuclear decommissioning trusts 119 78
Recurring | Level 1 | Equity securities    
Assets    
Nuclear decommissioning trusts 776 701
Other investments 58 56
Recurring | Level 1 | Equity securities | DTE Electric    
Assets    
Nuclear decommissioning trusts 776 701
Other investments 21 16
Recurring | Level 1 | Fixed income securities    
Assets    
Nuclear decommissioning trusts 127 115
Other investments 7 7
Recurring | Level 1 | Fixed income securities | DTE Electric    
Assets    
Nuclear decommissioning trusts 127 115
Recurring | Level 2    
Assets    
Cash equivalents 0 0
Derivative assets    
Derivative assets, gross 606 1,106
Total assets 1,042 1,506
Derivative liabilities    
Total Liabilities (606) (1,205)
Net Assets (Liabilities) at end of period 436 301
Recurring | Level 2 | DTE Electric    
Assets    
Cash equivalents 0 0
Derivative assets    
Total assets 436 400
Recurring | Level 2 | Current assets    
Derivative assets    
Total assets 461 881
Recurring | Level 2 | Current assets | DTE Electric    
Derivative assets    
Total assets 0 0
Recurring | Level 2 | Noncurrent assets    
Derivative assets    
Total assets 581 625
Recurring | Level 2 | Noncurrent assets | DTE Electric    
Derivative assets    
Total assets 436 400
Recurring | Level 2 | Current liabilities    
Derivative liabilities    
Total Liabilities (462) (876)
Recurring | Level 2 | Noncurrent liabilities    
Derivative liabilities    
Total Liabilities (144) (329)
Recurring | Level 2 | Natural Gas    
Derivative assets    
Derivative assets, gross 217 183
Derivative liabilities    
Derivative liabilities, gross (167) (331)
Recurring | Level 2 | Electricity    
Derivative assets    
Derivative assets, gross 258 720
Derivative liabilities    
Derivative liabilities, gross (272) (659)
Recurring | Level 2 | Environmental & Other    
Derivative assets    
Derivative assets, gross 131 201
Derivative liabilities    
Derivative liabilities, gross (148) (213)
Recurring | Level 2 | Other contracts    
Derivative assets    
Derivative assets, gross 0 2
Derivative liabilities    
Derivative liabilities, gross (19) (2)
Recurring | Level 2 | Derivative assets — FTRs | DTE Electric    
Derivative assets    
Derivative assets, net 0 0
Recurring | Level 2 | Cash equivalents    
Assets    
Nuclear decommissioning trusts 0 0
Other investments 0 0
Recurring | Level 2 | Cash equivalents | DTE Electric    
Assets    
Nuclear decommissioning trusts 0 0
Other investments 0 0
Recurring | Level 2 | Private equity and other    
Assets    
Nuclear decommissioning trusts 0 0
Recurring | Level 2 | Private equity and other | DTE Electric    
Assets    
Nuclear decommissioning trusts 0 0
Recurring | Level 2 | Hedge Funds and Similar Investments    
Assets    
Nuclear decommissioning trusts 65 41
Recurring | Level 2 | Hedge Funds and Similar Investments | DTE Electric    
Assets    
Nuclear decommissioning trusts 65 41
Recurring | Level 2 | Equity securities    
Assets    
Nuclear decommissioning trusts 0 0
Other investments 0 0
Recurring | Level 2 | Equity securities | DTE Electric    
Assets    
Nuclear decommissioning trusts 0 0
Other investments 0 0
Recurring | Level 2 | Fixed income securities    
Assets    
Nuclear decommissioning trusts 371 359
Other investments 0 0
Recurring | Level 2 | Fixed income securities | DTE Electric    
Assets    
Nuclear decommissioning trusts 371 359
Recurring | Level 3    
Assets    
Cash equivalents 0 0
Derivative assets    
Derivative assets, gross 350 390
Total assets 350 390
Derivative liabilities    
Total Liabilities (275) (667)
Net Assets (Liabilities) at end of period 75 (277)
Recurring | Level 3 | DTE Electric    
Assets    
Cash equivalents 0 0
Derivative assets    
Total assets 7 11
Recurring | Level 3 | Current assets    
Derivative assets    
Total assets 247 286
Recurring | Level 3 | Current assets | DTE Electric    
Derivative assets    
Total assets 7 11
Recurring | Level 3 | Noncurrent assets    
Derivative assets    
Total assets 103 104
Recurring | Level 3 | Noncurrent assets | DTE Electric    
Derivative assets    
Total assets 0 0
Recurring | Level 3 | Current liabilities    
Derivative liabilities    
Total Liabilities (145) (386)
Recurring | Level 3 | Noncurrent liabilities    
Derivative liabilities    
Total Liabilities (130) (281)
Recurring | Level 3 | Natural Gas    
Derivative assets    
Derivative assets, gross 179 135
Derivative liabilities    
Derivative liabilities, gross (157) (390)
Recurring | Level 3 | Electricity    
Derivative assets    
Derivative assets, gross 163 243
Derivative liabilities    
Derivative liabilities, gross (116) (276)
Recurring | Level 3 | Environmental & Other    
Derivative assets    
Derivative assets, gross 8 12
Derivative liabilities    
Derivative liabilities, gross (2) (1)
Recurring | Level 3 | Other contracts    
Derivative assets    
Derivative assets, gross 0 0
Derivative liabilities    
Derivative liabilities, gross 0 0
Recurring | Level 3 | Derivative assets — FTRs | DTE Electric    
Derivative assets    
Derivative assets, net 7 11
Recurring | Level 3 | Cash equivalents    
Assets    
Nuclear decommissioning trusts 0 0
Other investments 0 0
Recurring | Level 3 | Cash equivalents | DTE Electric    
Assets    
Nuclear decommissioning trusts 0 0
Other investments 0 0
Recurring | Level 3 | Private equity and other    
Assets    
Nuclear decommissioning trusts 0 0
Recurring | Level 3 | Private equity and other | DTE Electric    
Assets    
Nuclear decommissioning trusts 0 0
Recurring | Level 3 | Hedge Funds and Similar Investments    
Assets    
Nuclear decommissioning trusts 0 0
Recurring | Level 3 | Hedge Funds and Similar Investments | DTE Electric    
Assets    
Nuclear decommissioning trusts 0 0
Recurring | Level 3 | Equity securities    
Assets    
Nuclear decommissioning trusts 0 0
Other investments 0 0
Recurring | Level 3 | Equity securities | DTE Electric    
Assets    
Nuclear decommissioning trusts 0 0
Other investments 0 0
Recurring | Level 3 | Fixed income securities    
Assets    
Nuclear decommissioning trusts 0 0
Other investments 0 0
Recurring | Level 3 | Fixed income securities | DTE Electric    
Assets    
Nuclear decommissioning trusts 0 0
Recurring | Other    
Derivative assets    
Total assets 549 489
Derivative liabilities    
Net Assets (Liabilities) at end of period 549 489
Recurring | Other | DTE Electric    
Derivative assets    
Total assets 549 489
Recurring | Other | Noncurrent assets    
Derivative assets    
Total assets 549 489
Recurring | Other | Noncurrent assets | DTE Electric    
Derivative assets    
Total assets 549 489
Recurring | Other | Private equity and other    
Assets    
Nuclear decommissioning trusts 312 262
Recurring | Other | Private equity and other | DTE Electric    
Assets    
Nuclear decommissioning trusts 312 262
Recurring | Other | Equity securities    
Assets    
Nuclear decommissioning trusts 145 138
Recurring | Other | Equity securities | DTE Electric    
Assets    
Nuclear decommissioning trusts 145 138
Recurring | Other | Fixed income securities    
Assets    
Nuclear decommissioning trusts 92 89
Recurring | Other | Fixed income securities | DTE Electric    
Assets    
Nuclear decommissioning trusts $ 92 $ 89
v3.24.0.1
Fair Value (Details Textuals) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Nuclear decommissioning trusts | Fixed Income Securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Securities with no contractual maturity date $ 92  
Private Equity and Other    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Unfunded commitments related to investments classified as NAV assets $ 157 $ 177
Minimum | Equity or debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments, redemption notice period 7 days  
Minimum | Private Equity and Other    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments classified as NAV assets, general contractual durations 7 years  
Maximum | Equity or debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments, redemption notice period 65 days  
Maximum | Private Equity and Other    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments classified as NAV assets, general contractual durations 12 years  
v3.24.0.1
Fair Value (Reconciliation of Level 3 Assets and Liabilities at Fair Value on a Recurring Basis) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Purchases, issuances, and settlements:    
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Non-utility operations, Fuel, purchased power, and gas — utility Non-utility operations, Fuel, purchased power, and gas — utility
Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Non-utility operations, Fuel, purchased power, and gas — utility Non-utility operations, Fuel, purchased power, and gas — utility
Recurring    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Net Assets (Liabilities) as of January 1 $ (277) $ (215)
Transfers from Level 3 into Level 2 17 6
Total gains (losses)    
Included in earnings 379 (311)
Recorded in Regulatory liabilities 9 21
Purchases, issuances, and settlements:    
Settlements (53) 222
Net Assets (Liabilities) as of December 31 75 (277)
Total gains (losses) included in Net Income attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31 114 (276)
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31 7 11
Recurring | Natural Gas    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Net Assets (Liabilities) as of January 1 (255) (179)
Transfers from Level 3 into Level 2 17 5
Total gains (losses)    
Included in earnings 182 (410)
Recorded in Regulatory liabilities 0 0
Purchases, issuances, and settlements:    
Settlements 78 329
Net Assets (Liabilities) as of December 31 22 (255)
Total gains (losses) included in Net Income attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31 85 (215)
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31 0 0
Recurring | Electricity    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Net Assets (Liabilities) as of January 1 (33) (45)
Transfers from Level 3 into Level 2 0 1
Total gains (losses)    
Included in earnings 198 97
Recorded in Regulatory liabilities 0 0
Purchases, issuances, and settlements:    
Settlements (118) (86)
Net Assets (Liabilities) as of December 31 47 (33)
Total gains (losses) included in Net Income attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31 151 50
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31 0 0
Recurring | Other    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Net Assets (Liabilities) as of January 1 11 9
Transfers from Level 3 into Level 2 0 0
Total gains (losses)    
Included in earnings (1) 2
Recorded in Regulatory liabilities 9 21
Purchases, issuances, and settlements:    
Settlements (13) (21)
Net Assets (Liabilities) as of December 31 6 11
Total gains (losses) included in Net Income attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31 (122) (111)
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31 7 11
Recurring | DTE Electric    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Net Assets (Liabilities) as of January 1 11 9
Total gains (losses)    
Recorded in Regulatory liabilities 9 21
Purchases, issuances, and settlements:    
Settlements (13) (19)
Net Assets (Liabilities) as of December 31 7 11
Total gains (losses) included in Regulatory liabilities attributed to the change in unrealized gains (losses) related to assets and liabilities held at December 31 $ 7 $ 11
v3.24.0.1
Fair Value (Unobservable Inputs related to Level 3 Assets and Liabilities) (Details)
$ in Millions
Dec. 31, 2023
USD ($)
$ / MWh
$ / MMBTU
Dec. 31, 2022
USD ($)
$ / MWh
$ / MMBTU
Unobservable Input Valuation Techniques [Line Items]    
Derivative Assets $ 1,197 $ 1,922
Derivative Liabilities (1,172) (2,169)
Natural Gas    
Unobservable Input Valuation Techniques [Line Items]    
Derivative Assets 637 744
Derivative Liabilities (615) (1,018)
Electricity    
Unobservable Input Valuation Techniques [Line Items]    
Derivative Assets 421 963
Derivative Liabilities $ (388) $ (935)
Level 3 | Discounted Cash Flow | Forward basis price | Natural Gas | Minimum    
Unobservable Input Valuation Techniques [Line Items]    
Forward basis price | $ / MMBTU (1.57) (1.91)
Level 3 | Discounted Cash Flow | Forward basis price | Natural Gas | Maximum    
Unobservable Input Valuation Techniques [Line Items]    
Forward basis price | $ / MMBTU 6.27 39.94
Level 3 | Discounted Cash Flow | Forward basis price | Natural Gas | Weighted Average    
Unobservable Input Valuation Techniques [Line Items]    
Forward basis price | $ / MMBTU (0.08) 0.18
Level 3 | Discounted Cash Flow | Forward basis price | Electricity | Minimum    
Unobservable Input Valuation Techniques [Line Items]    
Forward basis price | $ / MWh (18.49) (29.41)
Level 3 | Discounted Cash Flow | Forward basis price | Electricity | Maximum    
Unobservable Input Valuation Techniques [Line Items]    
Forward basis price | $ / MWh 15.47 15.00
Level 3 | Discounted Cash Flow | Forward basis price | Electricity | Weighted Average    
Unobservable Input Valuation Techniques [Line Items]    
Forward basis price | $ / MWh (3.99) (3.04)
Recurring | Level 3    
Unobservable Input Valuation Techniques [Line Items]    
Derivative Assets $ 350 $ 390
Recurring | Level 3 | Natural Gas    
Unobservable Input Valuation Techniques [Line Items]    
Derivative Assets 179 135
Derivative Liabilities (157) (390)
Recurring | Level 3 | Electricity    
Unobservable Input Valuation Techniques [Line Items]    
Derivative Assets 163 243
Derivative Liabilities $ (116) $ (276)
v3.24.0.1
Fair Value (Fair Value of Financial Instruments) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes receivable $ 175 $ 80
Short-term borrowings 1,283 1,162
Notes payable 34 18
Long-term debt 19,546 17,978
Carrying Amount | DTE Electric    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes receivable 19 17
Notes payable 33 17
Long-term debt 11,043 9,696
Carrying Amount | DTE Electric | Affiliates    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term borrowings 0 27
Carrying Amount | DTE Electric | Other    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term borrowings 385 568
Fair Value | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes receivable 0 0
Short-term borrowings 0 0
Notes payable 0 0
Long-term debt 807 710
Fair Value | Level 1 | DTE Electric    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes receivable 0 0
Notes payable 0 0
Long-term debt 0 0
Fair Value | Level 1 | DTE Electric | Affiliates    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term borrowings 0 0
Fair Value | Level 1 | DTE Electric | Other    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term borrowings 0 0
Fair Value | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes receivable 0 0
Short-term borrowings 1,283 1,162
Notes payable 0 0
Long-term debt 16,178 14,084
Fair Value | Level 2 | DTE Electric    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes receivable 0 0
Notes payable 0 0
Long-term debt 9,999 8,289
Fair Value | Level 2 | DTE Electric | Affiliates    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term borrowings 0 0
Fair Value | Level 2 | DTE Electric | Other    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term borrowings 385 568
Fair Value | Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes receivable 181 82
Short-term borrowings 0 0
Notes payable 34 18
Long-term debt 1,202 1,199
Fair Value | Level 3 | DTE Electric    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Notes receivable 19 17
Notes payable 33 17
Long-term debt 126 128
Fair Value | Level 3 | DTE Electric | Affiliates    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term borrowings 0 27
Fair Value | Level 3 | DTE Electric | Other    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Short-term borrowings $ 0 $ 0
v3.24.0.1
Fair Value (Fair Value of Nuclear Decommissioning Trust Fund Assets) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]    
Nuclear decommissioning trust funds $ 2,041 $ 1,825
DTE Electric    
Debt Securities, Available-for-sale [Line Items]    
Nuclear decommissioning trust funds 2,041 1,825
DTE Electric | Nuclear decommissioning trusts    
Debt Securities, Available-for-sale [Line Items]    
Nuclear decommissioning trust funds 2,041 1,825
DTE Electric | Nuclear decommissioning trusts | Fermi 2    
Debt Securities, Available-for-sale [Line Items]    
Nuclear decommissioning trust funds 2,026 1,807
DTE Electric | Nuclear decommissioning trusts | Fermi 1    
Debt Securities, Available-for-sale [Line Items]    
Nuclear decommissioning trust funds 3 3
DTE Electric | Nuclear decommissioning trusts | Low-level radioactive waste    
Debt Securities, Available-for-sale [Line Items]    
Nuclear decommissioning trust funds $ 12 $ 15
v3.24.0.1
Fair Value (Gains and Losses and Proceeds from the Sale of Securities by the Nuclear Decommissioning Trust Funds) (Details) - DTE Electric - Nuclear decommissioning trusts - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]      
Realized gains $ 36 $ 71 $ 95
Realized losses (42) (53) (12)
Proceeds from sale of securities $ 681 $ 879 $ 1,047
v3.24.0.1
Fair Value (Fair Value and Unrealized Gains and Losses for the Nuclear Decommissioning Trust Funds) (Details) - DTE Electric - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]    
Fair Value $ 2,041 $ 1,825
Unrealized Gains 545 406
Unrealized Losses (58) (102)
Cash equivalents    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 34 42
Private Equity and Other    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 312 262
Unrealized Gains 74 63
Unrealized Losses (8) (5)
Hedge Funds and Similar Investments    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 184 119
Unrealized Gains 4 0
Unrealized Losses (9) (18)
Equity securities    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 921 839
Unrealized Gains 459 342
Unrealized Losses (11) (23)
Fixed Income Securities    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 590 563
Unrealized Gains 8 1
Unrealized Losses $ (30) $ (56)
v3.24.0.1
Fair Value (Fair Value of Fixed Income Securities Held in Nuclear Decommissioning Trust Funds (Details) - Nuclear decommissioning trusts - Fixed Income Securities
$ in Millions
Dec. 31, 2023
USD ($)
Debt Securities, Available-for-sale [Line Items]  
Due within one year $ 12
Due after one through five years 118
Due after five through ten years 95
Due after ten years 273
Fixed income securities total $ 498
v3.24.0.1
Financial and Other Derivative Instruments (Fair Value of Derivative Instruments) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Derivatives, Fair Value [Line Items]    
Derivative Assets $ 1,197 $ 1,922
Derivative Liabilities (1,172) (2,169)
Current derivative asset    
Derivatives, Fair Value [Line Items]    
Derivative Assets 910 1,517
Noncurrent derivative asset    
Derivatives, Fair Value [Line Items]    
Derivative Assets 287 405
Current derivative liability    
Derivatives, Fair Value [Line Items]    
Derivative Liabilities (847) (1,535)
Noncurrent derivative liability    
Derivatives, Fair Value [Line Items]    
Derivative Liabilities (325) (634)
Interest rate contracts    
Derivatives, Fair Value [Line Items]    
Derivative Assets 0 1
Derivative Liabilities (16) 0
Foreign currency exchange contracts    
Derivatives, Fair Value [Line Items]    
Derivative Assets 0 1
Derivative Liabilities (3) (2)
Natural gas    
Derivatives, Fair Value [Line Items]    
Derivative Assets 637 744
Derivative Liabilities (615) (1,018)
Electricity    
Derivatives, Fair Value [Line Items]    
Derivative Assets 421 963
Derivative Liabilities (388) (935)
Environmental & Other    
Derivatives, Fair Value [Line Items]    
Derivative Assets 139 213
Derivative Liabilities (150) (214)
Derivatives designated as hedging instruments    
Derivatives, Fair Value [Line Items]    
Derivative Assets 0 1
Derivative Liabilities (18) (2)
Derivatives designated as hedging instruments | Interest rate contracts    
Derivatives, Fair Value [Line Items]    
Derivative Assets 0 1
Derivative Liabilities (16) 0
Derivatives designated as hedging instruments | Foreign currency exchange contracts    
Derivatives, Fair Value [Line Items]    
Derivative Assets 0 0
Derivative Liabilities (2) (2)
Derivatives not designated as hedging instruments    
Derivatives, Fair Value [Line Items]    
Derivative Assets 1,197 1,921
Derivative Liabilities (1,154) (2,167)
Derivatives not designated as hedging instruments | Foreign currency exchange contracts    
Derivatives, Fair Value [Line Items]    
Derivative Assets 0 1
Derivative Liabilities (1) 0
Derivatives not designated as hedging instruments | Natural gas    
Derivatives, Fair Value [Line Items]    
Derivative Assets 637 744
Derivative Liabilities (615) (1,018)
Derivatives not designated as hedging instruments | Electricity    
Derivatives, Fair Value [Line Items]    
Derivative Assets 421 963
Derivative Liabilities (388) (935)
Derivatives not designated as hedging instruments | Environmental & Other    
Derivatives, Fair Value [Line Items]    
Derivative Assets 139 213
Derivative Liabilities (150) (214)
Derivatives not designated as hedging instruments | Derivative assets — FTRs | Other current assets | DTE Electric    
Derivatives, Fair Value [Line Items]    
Derivative Assets $ 7 $ 11
v3.24.0.1
Financial and Other Derivative Instruments (Details Textuals) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Letters of credit that could be used to offset net derivative liabilities $ 3 $ 81
Letters of credit that could be used to offset net derivative assets 10 $ 82
Additional collateral, aggregate fair value 463  
Derivative net liability position aggregate fair value 967  
Collateral already posted fair value 42  
Derivative, net asset position, fair value 772  
Remaining amount of offsets to derivative net liability positions for hard and soft trigger provisions $ 153  
v3.24.0.1
Financial and Other Derivative Instruments (Net Cash Collateral Offsetting Arrangements) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Cash collateral netted against Derivative assets $ 0 $ (90)
Cash collateral netted against Derivative liabilities 72 113
Cash collateral recorded in Accounts receivable 57 77
Cash collateral recorded in Accounts payable (3) (27)
Total net cash collateral posted (received) $ 126 $ 73
v3.24.0.1
Financial and Other Derivative Instruments (Netting Offsets of Derivative Assets and Liabilities) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Derivative assets    
Gross Amounts of Recognized Assets (Liabilities) $ 1,197 $ 1,922
Gross Amounts Offset in the Consolidated Statements of Financial Position (791) (1,489)
Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position 406 433
Derivative liabilities    
Gross Amounts of Recognized Assets (Liabilities) (1,172) (2,169)
Gross Amounts Offset in the Consolidated Statements of Financial Position 863 1,512
Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position (309) (657)
Natural gas    
Derivative assets    
Gross Amounts of Recognized Assets (Liabilities) 637 744
Gross Amounts Offset in the Consolidated Statements of Financial Position (416) (649)
Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position 221 95
Derivative liabilities    
Gross Amounts of Recognized Assets (Liabilities) (615) (1,018)
Gross Amounts Offset in the Consolidated Statements of Financial Position 429 645
Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position (186) (373)
Electricity    
Derivative assets    
Gross Amounts of Recognized Assets (Liabilities) 421 963
Gross Amounts Offset in the Consolidated Statements of Financial Position (243) (643)
Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position 178 320
Derivative liabilities    
Gross Amounts of Recognized Assets (Liabilities) (388) (935)
Gross Amounts Offset in the Consolidated Statements of Financial Position 297 665
Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position (91) (270)
Environmental & Other    
Derivative assets    
Gross Amounts of Recognized Assets (Liabilities) 139 213
Gross Amounts Offset in the Consolidated Statements of Financial Position (132) (196)
Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position 7 17
Derivative liabilities    
Gross Amounts of Recognized Assets (Liabilities) (150) (214)
Gross Amounts Offset in the Consolidated Statements of Financial Position 137 201
Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position (13) (13)
Interest rate contracts    
Derivative assets    
Gross Amounts of Recognized Assets (Liabilities) 0 1
Gross Amounts Offset in the Consolidated Statements of Financial Position 0 0
Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position 0 1
Derivative liabilities    
Gross Amounts of Recognized Assets (Liabilities) (16) 0
Gross Amounts Offset in the Consolidated Statements of Financial Position 0 0
Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position (16) 0
Foreign currency exchange contracts    
Derivative assets    
Gross Amounts of Recognized Assets (Liabilities) 0 1
Gross Amounts Offset in the Consolidated Statements of Financial Position 0 (1)
Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position 0 0
Derivative liabilities    
Gross Amounts of Recognized Assets (Liabilities) (3) (2)
Gross Amounts Offset in the Consolidated Statements of Financial Position 0 1
Net Amounts of Assets (Liabilities) Presented in the Consolidated Statements of Financial Position $ (3) $ (1)
v3.24.0.1
Financial and Other Derivative Instruments (Netting Offsets Reconciliation to Balance Sheet) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Derivative Assets    
Derivative Assets $ 1,197 $ 1,922
Collateral adjustment 0 (90)
Derivative asset, current 297 328
Derivative assets, noncurrent 109 105
Derivative Liabilities    
Derivative Liabilities (1,172) (2,169)
Collateral adjustment 72 113
Derivative liabilities, current (177) (342)
Derivative liabilities, noncurrent (132) (315)
Current derivative asset    
Derivative Assets    
Derivative Assets 910 1,517
Counterparty netting (613) (1,127)
Collateral adjustment 0 (62)
Noncurrent derivative asset    
Derivative Assets    
Derivative Assets 287 405
Counterparty netting (178) (272)
Collateral adjustment 0 (28)
Current derivative liability    
Derivative Liabilities    
Derivative Liabilities (847) (1,535)
Counterparty netting 613 1,127
Collateral adjustment 57 66
Noncurrent derivative liability    
Derivative Liabilities    
Derivative Liabilities (325) (634)
Counterparty netting 178 272
Collateral adjustment $ 15 $ 47
v3.24.0.1
Financial and Other Derivative Instruments (Effect of Derivatives not Designated as Hedging Instruments on the Consolidated Statement of Operations) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (Loss) Recognized in Income on Derivatives $ 383 $ (106) $ (184)
Natural gas | Operating Revenues — Non-utility operations      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (Loss) Recognized in Income on Derivatives 153 (235) (224)
Natural gas | Fuel, purchased power, gas, and other — non-utility      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (Loss) Recognized in Income on Derivatives 122 (108) (89)
Electricity | Operating Revenues — Non-utility operations      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (Loss) Recognized in Income on Derivatives 105 221 169
Environmental & Other | Operating Revenues — Non-utility operations      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (Loss) Recognized in Income on Derivatives 5 13 (40)
Foreign currency exchange contracts | Operating Revenues — Non-utility operations      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (Loss) Recognized in Income on Derivatives $ (2) $ 3 $ 0
v3.24.0.1
Financial and Other Derivative Instruments (Cumulative Gross Volume of Derivative Contracts Outstanding) (Details) - 12 months ended Dec. 31, 2023
CAD ($)
MWh
MMBTU
T
gal
USD ($)
Natural gas (MMBtu)    
Derivative [Line Items]    
Notional amount, energy measure | MMBTU 2,201,557,616  
Electricity (MWh)    
Derivative [Line Items]    
Notional amount, energy measure | MWh 40,542,536  
Oil (Gallons)    
Derivative [Line Items]    
Notional amount, volume measure | gal 4,272,000  
Foreign currency exchange ($ CAD)    
Derivative [Line Items]    
Notional amount, monetary measure | $ $ 127,326,648  
FTR (MWh)    
Derivative [Line Items]    
Notional amount, energy measure | MWh 66,064  
Renewable Energy Certificates (MWh)    
Derivative [Line Items]    
Notional amount, energy measure | MWh 10,242,908  
Carbon emissions (Metric Ton)    
Derivative [Line Items]    
Notional amount, mass measure | T 746,400  
Interest rate contracts ($ USD)    
Derivative [Line Items]    
Notional amount, monetary measure | $   $ 1,200,000,000
Treasury Lock ($ USD)    
Derivative [Line Items]    
Notional amount, monetary measure | $   $ 500,000,000
v3.24.0.1
Long-Term Debt (Long Term Debt Outstanding and Interest Rates) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Debt Instrument [Line Items]    
Long-term debt, total $ 19,707  
Mortgage Bonds, Notes and Other    
Debt Instrument [Line Items]    
Long-term debt, gross 18,020 $ 17,002
Unamortized debt discount (26) (26)
Unamortized debt issuance costs (100) (92)
Long-term debt due within one year (2,075) (1,077)
Long-term debt (net of current portion) $ 15,819 15,807
Unsecured    
Debt Instrument [Line Items]    
Interest rate 3.30%  
Long-term debt, gross $ 5,105 5,105
Securitization Bonds    
Debt Instrument [Line Items]    
Unamortized debt issuance costs (8) (4)
Long-term debt due within one year (64) (39)
Long-term debt (net of current portion) $ 705 172
Junior Subordinated Debentures    
Debt Instrument [Line Items]    
Interest rate 4.80%  
Long-term debt, gross $ 910 910
Unamortized debt issuance costs (27) (27)
Long-term debt, total 883 883
DTE Electric    
Debt Instrument [Line Items]    
Long-term debt due within one year (100) (203)
Long-term debt, total 11,147  
DTE Electric | Mortgage Bonds, Notes and Other    
Debt Instrument [Line Items]    
Unamortized debt discount (23) (22)
Unamortized debt issuance costs (73) (65)
Long-term debt (net of current portion) $ 10,174 9,282
DTE Electric | Principally Secured    
Debt Instrument [Line Items]    
Interest rate 3.80%  
Long-term debt, gross $ 10,370 9,572
DTE Electric | Securitization Bonds    
Debt Instrument [Line Items]    
Interest rate 5.30%  
Long-term debt, gross $ 777 215
Unamortized debt issuance costs (8) (4)
Long-term debt due within one year (64) (39)
Long-term debt (net of current portion) $ 705 172
DTE Gas | Principally Secured    
Debt Instrument [Line Items]    
Interest rate 4.20%  
Long-term debt, gross $ 2,545 $ 2,325
v3.24.0.1
Long-Term Debt (Debt Issuances) (Details) - USD ($)
$ in Millions
 1 Months Ended 12 Months Ended
Nov. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Oct. 31, 2023
Jun. 30, 2023
May 31, 2023
Mar. 31, 2023
Debt Instrument [Line Items]                
Amount   $ 3,197            
Proceeds from issuance of long-term debt, net of issuance costs   3,167 $ 2,171 $ 4,457        
Unsecured | Term Loan Facility                
Debt Instrument [Line Items]                
Amount               $ 200
Senior Notes | May 2023 4.875% Senior Notes                
Debt Instrument [Line Items]                
Interest Rate             4.875%  
Amount             $ 800  
DTE Electric                
Debt Instrument [Line Items]                
Proceeds from issuance of long-term debt, net of issuance costs   $ 1,881 $ 1,118 $ 985        
DTE Electric | DTE Energy                
Debt Instrument [Line Items]                
Payments of special dividend $ 297              
DTE Electric | Mortgage Bonds | March 2023 5.20% Mortgage Bonds                
Debt Instrument [Line Items]                
Interest Rate               5.20%
Amount               $ 600
DTE Electric | Mortgage Bonds | March 2023 5.40% Mortgage Bonds                
Debt Instrument [Line Items]                
Interest Rate               5.40%
Amount               $ 600
DTE Electric | Tax-Exempt Revenue Bonds | June 2023 3.875% Tax-Exempt Revenue Bonds                
Debt Instrument [Line Items]                
Interest Rate           3.875%    
Amount           $ 100    
DTE Electric | Securitization Bonds | November 2023 5.97% Securitization Bonds                
Debt Instrument [Line Items]                
Interest Rate 5.97%              
Amount $ 301              
DTE Electric | Securitization Bonds | November 2023 6.09% Securitization Bonds                
Debt Instrument [Line Items]                
Interest Rate 6.09%              
Amount $ 301              
DTE Electric | Securitization Bonds | November 2023 Securitization Bonds, used for partial repayment of mortgage bonds                
Debt Instrument [Line Items]                
Proceeds from issuance of long-term debt, net of issuance costs $ 297              
DTE Gas | Mortgage Bonds | October 2023 5.57% First Mortgage Bonds                
Debt Instrument [Line Items]                
Interest Rate         5.57%      
Amount         $ 150      
DTE Gas | Mortgage Bonds | October 2023 5.73% First Mortgage Bonds                
Debt Instrument [Line Items]                
Interest Rate         5.73%      
Amount         $ 145      
v3.24.0.1
Long-Term Debt (Details Textuals) - USD ($)
 1 Months Ended
Jun. 30, 2022
Dec. 31, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Debt Instrument [Line Items]          
Current portion of long-term debt   $ 2,142,000,000     $ 1,124,000,000
Term Loan Facility | Unsecured          
Debt Instrument [Line Items]          
Unused borrowing capacity $ 1,125,000,000        
Current portion of long-term debt       $ 1,000,000,000  
Unused loan capacity terminated     $ 125,000,000    
Term Loan Facility | Unsecured | Secured Overnight Financing Rate (SOFR)          
Debt Instrument [Line Items]          
Basis spread on variable rate 0.90%        
v3.24.0.1
Long-Term Debt (Debt Redemptions) (Details) - USD ($)
$ in Millions
 1 Months Ended 12 Months Ended
Dec. 31, 2023
Oct. 31, 2023
Sep. 30, 2023
Jun. 30, 2023
May 31, 2023
Apr. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Debt Instrument, Redemption [Line Items]                  
Amount             $ 1,616 $ 1,587 $ 3,522
Long-term debt outstanding $ 19,707           $ 19,707    
Unsecured | Term Loan Facility                  
Debt Instrument, Redemption [Line Items]                  
Amount       $ 200 $ 800        
DTE Gas | Senior Notes | 6.44% Senior Notes                  
Debt Instrument, Redemption [Line Items]                  
Interest Rate           6.44%      
Amount           $ 25      
DTE Gas | Mortgage Bonds | 3.64% Mortgage Bonds                  
Debt Instrument, Redemption [Line Items]                  
Interest Rate 3.64%           3.64%    
Amount $ 50                
DTE Electric                  
Debt Instrument, Redemption [Line Items]                  
Amount             $ 541 $ 337 $ 321
Long-term debt outstanding $ 11,147           $ 11,147    
DTE Electric | Senior Notes | 5.19% Senior Notes                  
Debt Instrument, Redemption [Line Items]                  
Interest Rate   5.19%              
Amount   $ 100              
DTE Electric | Securitization Bonds | 2.64% Securitization Bonds                  
Debt Instrument, Redemption [Line Items]                  
Interest Rate 2.64%     2.64%     2.64%    
Amount $ 20     $ 19          
DTE Electric | Mortgage Bonds | 4.31% Mortgage Bonds                  
Debt Instrument, Redemption [Line Items]                  
Interest Rate     4.31%            
Amount     $ 102            
DTE Electric | Mortgage Bonds | 3.65% Mortgage Bonds                  
Debt Instrument, Redemption [Line Items]                  
Interest Rate 3.65%           3.65%    
Amount $ 300                
Long-term debt outstanding $ 100           $ 100    
v3.24.0.1
Long-Term Debt (Scheduled Debt Maturities) (Details)
$ in Millions
Dec. 31, 2023
USD ($)
Maturities of Long-term Debt [Abstract]  
2024 $ 2,139
2025 1,292
2026 851
2027 230
2028 1,737
2029 and Thereafter 13,458
Long-term debt, total 19,707
DTE Electric  
Maturities of Long-term Debt [Abstract]  
2024 164
2025 422
2026 251
2027 39
2028 617
2029 and Thereafter 9,654
Long-term debt, total $ 11,147
v3.24.0.1
Long-Term Debt (Scheduled Interest Payments) (Details)
$ in Millions
Dec. 31, 2023
USD ($)
Debt Instrument [Line Items]  
2024 $ 749
2025 668
2026 651
2027 623
2028 589
2029 and Thereafter 8,412
Total 11,692
DTE Electric  
Debt Instrument [Line Items]  
2024 432
2025 427
2026 416
2027 408
2028 400
2029 and Thereafter 5,150
Total $ 7,233
v3.24.0.1
Preferred and Preference Securities (Details)
Dec. 31, 2023
$ / shares
shares
DTE Electric  
Preferred and Preferenced Securities [Line Items]  
Preferred stock, par value (in dollars per share) | $ / shares $ 100
Preferred stock, shares authorized (in shares) | shares 6,747,484
Preference stock, par value (in dollars per share) | $ / shares $ 1
Preference stock shares authorized (in shares) | shares 30,000,000
DTE Gas  
Preferred and Preferenced Securities [Line Items]  
Preferred stock, par value (in dollars per share) | $ / shares $ 1
Preferred stock, shares authorized (in shares) | shares 7,000,000
Preference stock, par value (in dollars per share) | $ / shares $ 1
Preference stock shares authorized (in shares) | shares 4,000,000
DTE Energy  
Preferred and Preferenced Securities [Line Items]  
Preferred stock, par value (in dollars per share) | $ / shares $ 0
Preferred stock, shares authorized (in shares) | shares 5,000,000
v3.24.0.1
Short-Term Credit Arrangements and Borrowings (Details Textuals)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Short-term Debt [Line Items]    
Maximum borrowing capacity $ 3,175,000,000  
Weighted average interest rate 5.60% 4.60%
Dividend restriction $ 2,900,000,000  
Retained earnings 4,404,000,000 $ 3,808,000,000
Effective limitations 0  
DTE Electric    
Short-term Debt [Line Items]    
Maximum borrowing capacity $ 900,000,000  
Total funded debt to capitalization ratio 0.51  
Weighted average interest rate 5.60% 4.60%
Retained earnings $ 2,863,000,000 $ 3,093,000,000
DTE Electric | Maximum    
Short-term Debt [Line Items]    
Total funded debt to capitalization ratio 0.65  
DTE Gas    
Short-term Debt [Line Items]    
Maximum borrowing capacity $ 300,000,000  
Total funded debt to capitalization ratio 0.48  
DTE Gas | Maximum    
Short-term Debt [Line Items]    
Total funded debt to capitalization ratio 0.65  
DTE Energy    
Short-term Debt [Line Items]    
Maximum borrowing capacity $ 1,975,000,000  
Total funded debt to capitalization ratio 0.63  
DTE Energy | Maximum    
Short-term Debt [Line Items]    
Total funded debt to capitalization ratio 0.70  
DTE Energy | Demand financing agreement    
Short-term Debt [Line Items]    
Maximum borrowing capacity $ 200,000,000  
Amount outstanding 152,000,000 $ 166,000,000
DTE Energy | DTE Energy Revolver | Letters of credit    
Short-term Debt [Line Items]    
Maximum borrowing capacity $ 500,000,000  
v3.24.0.1
Short-Term Credit Arrangements and Borrowings (Schedule of Borrowings) (Details)
$ in Millions
Dec. 31, 2023
USD ($)
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity $ 3,175
Amounts outstanding 1,442
Net availability 1,733
DTE Electric  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 900
Amounts outstanding 429
Net availability 471
DTE Gas  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 300
Amounts outstanding 77
Net availability 223
DTE Energy  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 1,975
Amounts outstanding 936
Net availability 1,039
Revolving credit facility | Unsecured revolving credit facility, expiring October 2028  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 2,600
Revolving credit facility | Unsecured revolving credit facility, expiring October 2028 | DTE Electric  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 800
Revolving credit facility | Unsecured revolving credit facility, expiring October 2028 | DTE Gas  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 300
Revolving credit facility | Unsecured revolving credit facility, expiring October 2028 | DTE Energy  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 1,500
Revolving credit facility | Unsecured letter of credit facility, expiring June 2024  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 175
Revolving credit facility | Unsecured letter of credit facility, expiring June 2024 | DTE Electric  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 0
Revolving credit facility | Unsecured letter of credit facility, expiring June 2024 | DTE Gas  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 0
Revolving credit facility | Unsecured letter of credit facility, expiring June 2024 | DTE Energy  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 175
Letters of credit  
Line Of Credit Facility [Line Items]  
Amounts outstanding 159
Letters of credit | DTE Electric  
Line Of Credit Facility [Line Items]  
Amounts outstanding 44
Letters of credit | DTE Gas  
Line Of Credit Facility [Line Items]  
Amounts outstanding 0
Letters of credit | DTE Energy  
Line Of Credit Facility [Line Items]  
Amounts outstanding 115
Letters of credit | Unsecured letter of credit facility, expiring February 2025  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 150
Letters of credit | Unsecured letter of credit facility, expiring February 2025 | DTE Electric  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 0
Letters of credit | Unsecured letter of credit facility, expiring February 2025 | DTE Gas  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 0
Letters of credit | Unsecured letter of credit facility, expiring February 2025 | DTE Energy  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 150
Letters of credit | Unsecured letter of credit facilities  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 150
Letters of credit | Unsecured letter of credit facilities | DTE Electric  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 0
Letters of credit | Unsecured letter of credit facilities | DTE Gas  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 0
Letters of credit | Unsecured letter of credit facilities | DTE Energy  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 150
Letters of credit | Unsecured letter of credit facility  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 100
Letters of credit | Unsecured letter of credit facility | DTE Electric  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 100
Letters of credit | Unsecured letter of credit facility | DTE Gas  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 0
Letters of credit | Unsecured letter of credit facility | DTE Energy  
Line Of Credit Facility [Line Items]  
Line of credit facility, maximum borrowing capacity 0
Commercial paper issuances  
Line Of Credit Facility [Line Items]  
Amounts outstanding 1,283
Commercial paper issuances | DTE Electric  
Line Of Credit Facility [Line Items]  
Amounts outstanding 385
Commercial paper issuances | DTE Gas  
Line Of Credit Facility [Line Items]  
Amounts outstanding 77
Commercial paper issuances | DTE Energy  
Line Of Credit Facility [Line Items]  
Amounts outstanding $ 821
v3.24.0.1
Leases (Details Textuals) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Lessee, Lease, Description [Line Items]      
Lessor, finance lease extension term 5 years    
Depreciation expense associated with property under operating leases $ 8 $ 11 $ 22
Interest income recognized under finance leases $ 27 $ 24 $ 17
Minimum      
Lessee, Lease, Description [Line Items]      
Lessee, lease terms 2 years    
Lessor, operating lease term 2 years    
Maximum      
Lessee, Lease, Description [Line Items]      
Lessee, lease terms 40 years    
Lessor, operating lease term 24 years    
DTE Electric | Minimum      
Lessee, Lease, Description [Line Items]      
Lessee, lease terms 2 years    
DTE Electric | Maximum      
Lessee, Lease, Description [Line Items]      
Lessee, lease terms 40 years    
v3.24.0.1
Leases (Components of Lease Cost) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Lessee, Lease, Description [Line Items]      
Operating lease cost $ 22 $ 18 $ 19
Finance lease cost:      
Amortization of right-of-use assets 7 7 7
Interest of lease liabilities 0 1 1
Total finance lease cost 7 8 8
Variable lease cost 13 9 9
Short-term lease cost 12 19 14
Total lease cost 54 54 50
DTE Electric      
Lessee, Lease, Description [Line Items]      
Operating lease cost 17 12 14
Finance lease cost:      
Amortization of right-of-use assets 6 6 6
Interest of lease liabilities 0 0 0
Total finance lease cost 6 6 6
Variable lease cost 0 0 0
Short-term lease cost 4 10 6
Total lease cost $ 27 $ 28 $ 26
v3.24.0.1
Leases (Other Information) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Cash paid for amounts included in the measurement of these liabilities:      
Operating cash flows for finance leases $ 9 $ 8 $ 8
Operating cash flows for operating leases 19 17 19
Right-of-use assets obtained in exchange for lease obligations:      
Operating leases 61 5 5
Finance leases $ 5 $ 3 $ 3
Weighted Average Remaining Lease Term (Years)      
Operating leases 18 years 8 months 12 days 12 years 9 months 18 days 12 years 8 months 12 days
Finance leases 8 years 10 months 24 days 8 years 2 months 12 days 7 years 9 months 18 days
Weighted Average Discount Rate      
Operating leases 4.40% 3.70% 3.60%
Finance leases 4.00% 2.40% 2.20%
DTE Electric      
Cash paid for amounts included in the measurement of these liabilities:      
Operating cash flows for finance leases $ 7 $ 7 $ 7
Operating cash flows for operating leases 15 12 14
Right-of-use assets obtained in exchange for lease obligations:      
Operating leases 61 2 1
Finance leases $ 5 $ 1 $ 1
Weighted Average Remaining Lease Term (Years)      
Operating leases 19 years 9 months 18 days 11 years 1 month 6 days 10 years 3 months 18 days
Finance leases 4 years 6 months 1 year 1 month 6 days 2 years 1 month 6 days
Weighted Average Discount Rate      
Operating leases 4.50% 3.40% 3.40%
Finance leases 5.40% 1.00% 1.00%
v3.24.0.1
Leases (Future Minimum Lease Payments) (Details)
$ in Millions
Dec. 31, 2023
USD ($)
Operating Leases  
2024 $ 20
2025 15
2026 14
2027 12
2028 10
2029 and thereafter 134
Total future minimum lease payments 205
Imputed interest (80)
Lease liabilities 125
Finance Leases  
2024 3
2025 3
2026 2
2027 2
2028 2
2029 and thereafter 6
Total future minimum lease payments 18
Imputed interest (2)
Lease liabilities 16
DTE Electric  
Operating Leases  
2024 16
2025 12
2026 10
2027 10
2028 8
2029 and thereafter 110
Total future minimum lease payments 166
Imputed interest (70)
Lease liabilities 96
Finance Leases  
2024 2
2025 1
2026 1
2027 1
2028 1
2029 and thereafter 0
Total future minimum lease payments 6
Imputed interest 0
Lease liabilities $ 6
v3.24.0.1
Leases (Finance Leases Reported on Consolidated Statements of Financial Position) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Lessee, Lease, Description [Line Items]    
Right-of-use assets, within Property, plant, and equipment, net $ 18 $ 19
Current lease liabilities, within Current portion of long-term debt 3 8
Long-term lease liabilities $ 13 $ 11
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Property, Plant and Equipment, Net Property, Plant and Equipment, Net
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Current portion of long-term debt Current portion of long-term debt
DTE Electric    
Lessee, Lease, Description [Line Items]    
Right-of-use assets, within Property, plant, and equipment, net $ 6 $ 6
Current lease liabilities, within Current portion of long-term debt 2 6
Long-term lease liabilities $ 4 $ 1
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Property, Plant and Equipment, Net Property, Plant and Equipment, Net
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Current portion of long-term debt Current portion of long-term debt
v3.24.0.1
Leases (Lease Income Associated with Operating Leases) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Lessor, Lease, Description [Line Items]      
Fixed payments $ 15 $ 15 $ 67
Variable payments 44 67 131
Total lease income under operating leases 59 82 198
Operating revenues      
Lessor, Lease, Description [Line Items]      
Total lease income under operating leases $ 59 $ 82 $ 103
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income, Regulated and Unregulated Operating Revenue Other Nonoperating Income, Regulated and Unregulated Operating Revenue Other Nonoperating Income, Regulated and Unregulated Operating Revenue
Other income      
Lessor, Lease, Description [Line Items]      
Total lease income under operating leases $ 0 $ 0 $ 95
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income, Regulated and Unregulated Operating Revenue Other Nonoperating Income, Regulated and Unregulated Operating Revenue Other Nonoperating Income, Regulated and Unregulated Operating Revenue
v3.24.0.1
Leases (Minimum Future Rental Revenues under Operating Leases) (Details)
$ in Millions
Dec. 31, 2023
USD ($)
Leases [Abstract]  
2024 $ 15
2025 15
2026 11
2027 10
2028 6
2029 and thereafter 36
Total minimum future rental revenues under operating leases $ 93
v3.24.0.1
Leases (Property under Operating Leases) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Leases [Abstract]    
Gross property under operating leases $ 228 $ 282
Accumulated amortization of property under operating leases $ 118 $ 128
v3.24.0.1
Leases (Components of Net Investment in Finance Leases) (Details)
$ in Millions
Dec. 31, 2023
USD ($)
Leases [Abstract]  
2024 $ 34
2025 34
2026 34
2027 34
2028 34
2029 and thereafter 389
Total minimum future lease receipts 559
Residual value of leased pipeline 17
Less unearned income 289
Net investment in finance lease 287
Less current portion 8
Net investment in finance lease, noncurrent $ 279
v3.24.0.1
Commitments and Contingencies (Details Textuals)
 1 Months Ended 12 Months Ended
Jun. 30, 2022
USD ($)
Dec. 31, 2023
USD ($)
employee
site
facility
Dec. 31, 2022
USD ($)
Loss Contingencies [Line Items]      
Capital expenditures estimated for next year   $ 4,700,000,000  
Labor force concentration risk | Workforce subject to collective bargaining arrangements      
Loss Contingencies [Line Items]      
Approximate number of employees | employee   4,900  
Percentage of total employees   49.00%  
Labor force concentration risk | Workforce subject to collective bargaining arrangements expiring within one year      
Loss Contingencies [Line Items]      
Percentage of total employees   1.00%  
Reduced emissions fuel guarantees      
Loss Contingencies [Line Items]      
Number of days after expiration of statutes of limitations   90 days  
Maximum potential liability   $ 414,000,000  
Other guarantees      
Loss Contingencies [Line Items]      
Maximum potential liability   44,000,000  
Performance surety bonds      
Loss Contingencies [Line Items]      
Performance bonds outstanding   334,000,000  
Performance surety bonds | Energy Trading      
Loss Contingencies [Line Items]      
Performance bonds outstanding   $ 130,000,000  
Performance surety bonds | Energy Trading | Minimum      
Loss Contingencies [Line Items]      
Performance bonds term   1 year  
Performance surety bonds | Energy Trading | Maximum      
Loss Contingencies [Line Items]      
Performance bonds term   3 years  
DTE Electric      
Loss Contingencies [Line Items]      
Environmental capital expenditures   $ 2,400,000,000  
Estimated capital expenditures   $ 0  
Number of former MGP sites | site   3  
Accrued for remediation related to the sites   $ 9,000,000 $ 10,000,000
Number of permitted engineered coal ash storage facilities owned | facility   3  
Capital expenditures estimated for next year   $ 3,400,000,000  
DTE Electric | Ludington Plant Contract Dispute | Pending Litigation      
Loss Contingencies [Line Items]      
Damages sought, percentage liable 49.00%    
DTE Electric | Labor force concentration risk | Workforce subject to collective bargaining arrangements      
Loss Contingencies [Line Items]      
Approximate number of employees | employee   2,550  
Percentage of total employees   57.00%  
DTE Electric | Labor force concentration risk | Workforce subject to collective bargaining arrangements expiring within one year      
Loss Contingencies [Line Items]      
Percentage of total employees   0.00%  
DTE Electric | Performance surety bonds      
Loss Contingencies [Line Items]      
Performance bonds outstanding   $ 159,000,000  
DTE Gas      
Loss Contingencies [Line Items]      
Number of former MGP sites | site   14  
Accrued for remediation related to the sites   $ 26,000,000 $ 23,000,000
Amortization period for MGP costs (in years)   10 years  
DTE Gas | Cleanup completed and site closed      
Loss Contingencies [Line Items]      
Number of former MGP sites | site   8  
DTE Gas | Partial closure completed      
Loss Contingencies [Line Items]      
Number of former MGP sites | site   4  
Toshiba America Energy Systems and Toshiba Corporation | DTE Electric and Consumers Energy Company | Ludington Plant Contract Dispute | Pending Litigation      
Loss Contingencies [Line Items]      
Damages sought $ 15,000,000    
CCR and ELG Rules | DTE Electric      
Loss Contingencies [Line Items]      
Estimated impact of the CCR and ELG rules   $ 427,000,000  
Estimated impact of the CCR and ELG rules for 2024 through 2028   $ 417,000,000  
v3.24.0.1
Commitments and Contingencies (Purchase Commitments) (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2023
USD ($)
Entity Information [Line Items]  
2024 $ 3,441
2025 1,781
2026 1,207
2027 657
2028 430
2029 and thereafter 1,392
Total 8,908
Long-term power purchase agreements  
Entity Information [Line Items]  
2024 92
2025 92
2026 92
2027 92
2028 92
2029 and thereafter 568
Total 1,028
Other purchase commitments  
Entity Information [Line Items]  
2024 3,349
2025 1,689
2026 1,115
2027 565
2028 338
2029 and thereafter 824
Total 7,880
DTE Electric  
Entity Information [Line Items]  
2024 927
2025 490
2026 281
2027 180
2028 171
2029 and thereafter 716
Total 2,765
DTE Electric | Long-term power purchase agreements  
Entity Information [Line Items]  
2024 98
2025 97
2026 97
2027 97
2028 97
2029 and thereafter 578
Total 1,064
DTE Electric | Other purchase commitments  
Entity Information [Line Items]  
2024 829
2025 393
2026 184
2027 83
2028 74
2029 and thereafter 138
Total $ 1,701
DTE Electric | Minimum  
Entity Information [Line Items]  
Share of plant output 28.00%
DTE Electric | Maximum  
Entity Information [Line Items]  
Share of plant output 100.00%
v3.24.0.1
Nuclear Operations (Details) - DTE Electric
$ in Millions
 4 Months Ended 12 Months Ended
May 16, 2014
kWh
May 15, 2014
$ / MWh
Dec. 31, 2023
USD ($)
Entity Information [Line Items]      
Policy waiting period     84 days
Insurance coverage for extra expense when power plant unavailable     $ 490
Period of coverage of policy for extra expenses     3 years
Primary coverage for stabilization, decontamination, debris removal, repair and/or replacement of property, and decommissioning     $ 1,500
Excess coverage for stabilization, decontamination, debris removal, repair and/or replacement of property, and decommissioning     1,250
Combined coverage limit for total property damage     2,750
Total limit for property damage for non-nuclear events     1,800
Limit of coverage for aggregate extra expenses for non-nuclear events     $ 328
Period of coverage for extra expenses     2 years
Time period for TRIA after the first loss from terrorism     1 year
NEIL policies against terrorism loss, amount made available to all insured entities (up to)     $ 3,200
Maximum assessment if loss amount exceeds funds available     38
Public liability insurance for a nuclear incident     450
Maximum deferred premium charges that could be levied against each licensed nuclear facility     166
Limit of deferred premium charges per year per facility     $ 25
Company obligated to pay DOE fee of Fermi 2 electricity generated and sold (in dollars per MWh) | $ / MWh   1  
New DOE fee for Fermi 2 electricity generated and sold (KWh) | kWh 0    
v3.24.0.1
Retirement Benefits and Trusteed Assets (Pension Plan - Pension Cost Inclusions) (Details) - Pension plan - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Service cost $ 57 $ 95 $ 108
Interest cost 214 166 158
Expected return on plan assets (352) (346) (339)
Amortization of:      
Net actuarial loss 7 115 196
Prior service credit (2) (1) 0
Settlements 7 94 16
Net pension/other postretirement cost (credit) $ (69) $ 123 $ 139
v3.24.0.1
Retirement Benefits and Trusteed Assets (Pension Plan - Other Changes in Plan Assets and Benefit Obligations recognized in Regulatory Assets and OCI) (Details) - Pension plan - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Other changes in plan assets and benefit obligations recognized in Regulatory assets and Other comprehensive income (loss)    
Net actuarial loss $ 62 $ 156
Amortization of net actuarial loss and settlements (14) (209)
Amortization of prior service credit 2 1
Total recognized in Regulatory assets and Other comprehensive income (loss) 50 (52)
Total recognized in net periodic pension cost, Regulatory assets, and Other comprehensive income (loss) $ (19) $ 71
v3.24.0.1
Retirement Benefits and Trusteed Assets (Pension Plan - Reconciliation of Obligations, Assets and Funded Status of Plans) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Amounts recognized in Regulatory assets      
Regulatory assets $ 6,317 $ 4,336  
Pension plan      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Accumulated benefit obligation, end of year 4,089 4,078  
Change in projected benefit obligation      
Projected/Accumulated postretirement benefit obligation, beginning of year 4,309 5,857  
Service cost 57 95 $ 108
Interest cost 214 166 158
Actuarial (gain) loss 74 (1,252)  
Benefits paid (329) (278)  
Settlements (7) (279)  
Projected/Accumulated postretirement benefit obligation, end of year 4,318 4,309 5,857
Change in plan assets      
Plan assets at fair value, beginning of year 3,897 5,507  
Actual return on plan assets 363 (1,062)  
Company contributions 36 9  
Benefits paid (329) (278)  
Settlements (7) (279)  
Plan assets at fair value, end of year 3,960 3,897 $ 5,507
Funded status (358) (412)  
Amount recorded as:      
Current liabilities (8) (34)  
Noncurrent liabilities (350) (378)  
Defined benefit plans liabilities (358) (412)  
Amounts recognized in Accumulated other comprehensive income (loss), pre-tax      
Net actuarial loss 76 85  
Amounts recognized in Accumulated other comprehensive income (loss), pre-tax 76 85  
Amounts recognized in Regulatory assets      
Net actuarial loss 1,426 1,369  
Prior service credit (5) (7)  
Regulatory assets $ 1,421 $ 1,362  
v3.24.0.1
Retirement Benefits and Trusteed Assets (Details Textuals) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Annual contributions per employee, percentage 4.00%    
Defined contribution plan cost $ 75,000,000 $ 73,000,000 $ 70,000,000
DTE Electric      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Defined contribution plan cost $ 35,000,000 35,000,000 34,000,000
DTE Gas      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Annual contributions per employee, percentage 8.00%    
Pension plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Estimated future employer contributions in next fiscal year $ 0    
Pension cost (credit) $ (69,000,000) 123,000,000 139,000,000
Expected return on plan assets for next fiscal year 8.00%    
Pension plan | DTE Electric      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Pension funds transferred to (from) plan $ 50,000,000 50,000,000  
Pension cost (credit) (39,000,000) 101,000,000 107,000,000
Pension plan | DTE Gas      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Pension funds transferred to (from) plan (50,000,000) (50,000,000)  
Other postretirement benefit plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Pension cost (credit) $ (38,000,000) (66,000,000) (59,000,000)
Expected return on plan assets for next fiscal year 7.60%    
Retiree health care allowance will increase at lower of the rate of medical inflation or a set percentage 2.00%    
Other postretirement benefit plan | DTE Electric      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Pension cost (credit) $ (24,000,000) $ (37,000,000) $ (31,000,000)
v3.24.0.1
Retirement Benefits and Trusteed Assets (Pension Plan - Benefits related to Qualified and Nonqualified Pension Plans Expected to be paid) (Details) - Pension plan
$ in Millions
Dec. 31, 2023
USD ($)
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2024 $ 319
2025 328
2026 322
2027 321
2028 324
2029-2033 1,605
Total $ 3,219
v3.24.0.1
Retirement Benefits and Trusteed Assets (Pension Plan - Assumptions used in Determining the PBO and Net Pension Costs) (Details) - Pension plan
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Projected benefit obligation      
Discount rate 5.00% 5.19% 2.91%
Rate of compensation increase 3.80% 3.80% 3.80%
Cash balance interest crediting rate 3.60% 3.40% 2.40%
Net pension costs      
Discount rate 5.19% 2.91% 2.57%
Rate of compensation increase 3.80% 3.80% 3.80%
Expected long-term rate of return on plan assets 7.60% 6.80% 7.00%
Cash balance interest crediting rate 3.40% 2.40% 2.00%
v3.24.0.1
Retirement Benefits and Trusteed Assets (Pension Plan - Target Allocations of Plan Assets) (Details) - Pension plan
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]  
Target allocation percentage of assets 100.00%
U.S. Large Capitalization (Cap) Equity Securities  
Defined Benefit Plan Disclosure [Line Items]  
Target allocation percentage of assets 12.00%
U.S. Small Cap and Mid Cap Equity Securities  
Defined Benefit Plan Disclosure [Line Items]  
Target allocation percentage of assets 2.00%
Non-U.S. Equity Securities  
Defined Benefit Plan Disclosure [Line Items]  
Target allocation percentage of assets 11.00%
Fixed Income Securities  
Defined Benefit Plan Disclosure [Line Items]  
Target allocation percentage of assets 48.00%
Hedge Funds and Similar Investments  
Defined Benefit Plan Disclosure [Line Items]  
Target allocation percentage of assets 8.00%
Private Equity and Other  
Defined Benefit Plan Disclosure [Line Items]  
Target allocation percentage of assets 19.00%
v3.24.0.1
Retirement Benefits and Trusteed Assets (Pension Plan - Fair Value Measurements) (Details) - Pension Plan - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value $ 3,960 $ 3,897 $ 5,507
Short-term Investments      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 100 77  
Equity Securities, Domestic      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 550 483  
Equity Securities, International      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 364 481  
Fixed Income Securities, Governmental      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 609 583  
Fixed Income Securities, Corporate      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 1,323 1,203  
Hedge Funds and Similar Investments      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 282 321  
Private Equity and Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 732 749  
Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 790 734  
Level 1 | Short-term Investments      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 100 77  
Level 1 | Equity Securities, Domestic      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Level 1 | Equity Securities, International      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 55 65  
Level 1 | Fixed Income Securities, Governmental      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 531 506  
Level 1 | Fixed Income Securities, Corporate      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Level 1 | Hedge Funds and Similar Investments      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 104 86  
Level 1 | Private Equity and Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 1,469 1,330  
Level 2 | Short-term Investments      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Level 2 | Equity Securities, Domestic      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Level 2 | Equity Securities, International      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Level 2 | Fixed Income Securities, Governmental      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 78 77  
Level 2 | Fixed Income Securities, Corporate      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 1,323 1,203  
Level 2 | Hedge Funds and Similar Investments      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 68 50  
Level 2 | Private Equity and Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 1,701 1,833  
Other | Short-term Investments      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Other | Equity Securities, Domestic      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 550 483  
Other | Equity Securities, International      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 309 416  
Other | Fixed Income Securities, Governmental      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Other | Fixed Income Securities, Corporate      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Other | Hedge Funds and Similar Investments      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 110 185  
Other | Private Equity and Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value $ 732 $ 749  
v3.24.0.1
Retirement Benefits and Trusteed Assets (OPEB - Contributions to the VEBA) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Contribution Plan Disclosure [Line Items]      
Contributions $ 75 $ 73 $ 70
DTE Electric      
Defined Contribution Plan Disclosure [Line Items]      
Contributions 35 35 34
Retiree healthcare plan (VEBA)      
Defined Contribution Plan Disclosure [Line Items]      
Contributions 16 16 18
Retiree healthcare plan (VEBA) | DTE Electric      
Defined Contribution Plan Disclosure [Line Items]      
Contributions $ 7 $ 7 $ 8
v3.24.0.1
Retirement Benefits and Trusteed Assets (OPEB - Postretirement Cost Inclusions) (Details) - Other postretirement benefit plan - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]      
Service cost $ 17 $ 27 $ 30
Interest cost 65 48 46
Expected return on plan assets (111) (126) (129)
Amortization of:      
Net actuarial loss 10 4 13
Prior service credit (19) (19) (19)
Net pension/other postretirement cost (credit) (38) (66) (59)
DTE Electric      
Defined Benefit Plan Disclosure [Line Items]      
Service cost 13 20 23
Interest cost 49 37 35
Expected return on plan assets (73) (85) (86)
Amortization of:      
Net actuarial loss 1 5 11
Prior service credit (14) (14) (14)
Net pension/other postretirement cost (credit) $ (24) $ (37) $ (31)
v3.24.0.1
Retirement Benefits and Trusteed Assets (OPEB - Other Changes in Plan Assets and APBO Recognized in Regulatory Assets and OCI) (Details) - Other postretirement benefit plan - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Other changes in plan assets and accumulated postretirement benefit obligation recognized in Regulatory assets and Other comprehensive income (loss)    
Net actuarial (gain) loss $ (17) $ 90
Amortization of net actuarial loss (10) (4)
Prior service cost 0 1
Amortization of prior service credit 19 19
Total recognized in Regulatory assets and Other comprehensive income (loss) (8) 106
Total recognized in net periodic pension cost, Regulatory assets, and Other comprehensive income (loss) (46) 40
DTE Electric    
Other changes in plan assets and accumulated postretirement benefit obligation recognized in Regulatory assets and Other comprehensive income (loss)    
Net actuarial (gain) loss (6) 24
Amortization of net actuarial loss (1) (5)
Amortization of prior service credit 14 14
Total recognized in Regulatory assets and Other comprehensive income (loss) 7 33
Total recognized in net periodic pension cost, Regulatory assets, and Other comprehensive income (loss) $ (17) $ (4)
v3.24.0.1
Retirement Benefits and Trusteed Assets (OPEB - Reconciliation of Obligations, Assets and Funded Status of Plans) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Amounts recognized in Regulatory assets      
Regulatory assets $ 6,317 $ 4,336  
Other postretirement benefit plan      
Change in accumulated postretirement benefit obligation      
Projected/Accumulated postretirement benefit obligation, beginning of year 1,293 1,702  
Service cost 17 27 $ 30
Interest cost 65 48 46
Actuarial (gain) loss (5) (395)  
Benefits paid (87) (89)  
Projected/Accumulated postretirement benefit obligation, end of year 1,283 1,293 1,702
Change in plan assets      
Plan assets at fair value, beginning of year 1,577 2,021  
Actual return on plan assets 124 (359)  
Benefits paid (87) (85)  
Plan assets at fair value, end of year 1,614 1,577 2,021
Funded status 331 284  
Amount recorded as:      
Noncurrent assets 633 571  
Current liabilities (1) 0  
Noncurrent liabilities (301) (287)  
Defined benefit plans assets (liabilities) 331 284  
Amounts recognized in Accumulated other comprehensive income (loss), pre-tax      
Net actuarial gain (13) (14)  
Amounts recognized in Regulatory assets      
Net actuarial loss 173 201  
Prior service credit (10) (29)  
Regulatory assets 163 172  
DTE Electric      
Amounts recognized in Regulatory assets      
Regulatory assets 5,695 3,640  
DTE Electric | Other postretirement benefit plan      
Change in accumulated postretirement benefit obligation      
Projected/Accumulated postretirement benefit obligation, beginning of year 982 1,293  
Service cost 13 20 23
Interest cost 49 37 35
Actuarial (gain) loss 2 (301)  
Benefits paid (64) (67)  
Projected/Accumulated postretirement benefit obligation, end of year 982 982 1,293
Change in plan assets      
Plan assets at fair value, beginning of year 1,052 1,355  
Actual return on plan assets 81 (239)  
Benefits paid (63) (64)  
Plan assets at fair value, end of year 1,070 1,052 $ 1,355
Funded status 88 70  
Amount recorded as:      
Noncurrent assets 378 345  
Current liabilities 0 0  
Noncurrent liabilities (290) (275)  
Defined benefit plans assets (liabilities) 88 70  
Amounts recognized in Accumulated other comprehensive income (loss), pre-tax      
Net actuarial gain 0 0  
Amounts recognized in Regulatory assets      
Net actuarial loss 73 80  
Prior service credit (6) (20)  
Regulatory assets $ 67 $ 60  
v3.24.0.1
Retirement Benefits and Trusteed Assets (OPEB - Accumulated Postretirement Obligations in Excess of Plan Assets) (Details) - Other postretirement benefit plan - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]    
Accumulated postretirement benefit obligation $ 628 $ 625
Fair value of plan assets 326 338
Accumulated postretirement benefit obligation in excess of plan assets 302 287
DTE Electric    
Defined Benefit Plan Disclosure [Line Items]    
Accumulated postretirement benefit obligation 592 591
Fair value of plan assets 302 316
Accumulated postretirement benefit obligation in excess of plan assets $ 290 $ 275
v3.24.0.1
Retirement Benefits and Trusteed Assets (OPEB - Benefits related to Qualified and Nonqualified Pension Plans Expected to be paid in the Next Ten Years) (Details) - Other postretirement benefit plan
$ in Millions
Dec. 31, 2023
USD ($)
Defined Benefit Plan Disclosure [Line Items]  
2024 $ 84
2025 88
2026 89
2027 91
2028 92
2029-2033 482
Total 926
DTE Electric  
Defined Benefit Plan Disclosure [Line Items]  
2024 64
2025 67
2026 68
2027 70
2028 71
2029-2033 369
Total $ 709
v3.24.0.1
Retirement Benefits and Trusteed Assets (OPEB - Assumptions used in Determining the PBO and Net Pension Costs) (Details)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Accumulated postretirement benefit obligation      
Ultimate health care trend rate     4.50%
Other postretirement benefit costs      
Ultimate health care trend rate     4.50%
Other postretirement benefit plan      
Accumulated postretirement benefit obligation      
Discount rate 5.00% 5.19% 2.91%
Health care trend rate pre- 65 7.75% 6.75% 6.75%
Health care trend post- 65 8.25% 7.25% 7.25%
Ultimate health care trend rate 4.50% 4.50% 4.50%
Other postretirement benefit costs      
Discount rate 5.19% 2.91% 2.58%
Expected long-term rate of return on plan assets 7.20% 6.40% 6.70%
Health care trend rate pre- 65 6.75% 6.75% 6.75%
Health care trend post- 65 7.25% 7.25% 7.25%
Ultimate health care trend rate 4.50% 4.50% 4.50%
v3.24.0.1
Retirement Benefits and Trusteed Assets (OPEB - Target Allocations of Plan Assets) (Details) - Other postretirement benefit plan
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]  
Target allocation percentage of assets 100.00%
U.S. Large Cap Equity Securities  
Defined Benefit Plan Disclosure [Line Items]  
Target allocation percentage of assets 5.00%
Non-U.S. Equity Securities  
Defined Benefit Plan Disclosure [Line Items]  
Target allocation percentage of assets 4.00%
Fixed Income Securities  
Defined Benefit Plan Disclosure [Line Items]  
Target allocation percentage of assets 61.00%
Hedge Funds and Similar Investments  
Defined Benefit Plan Disclosure [Line Items]  
Target allocation percentage of assets 9.00%
Private Equity and Other  
Defined Benefit Plan Disclosure [Line Items]  
Target allocation percentage of assets 21.00%
v3.24.0.1
Retirement Benefits and Trusteed Assets (OPEB - Fair Value Measurements) (Details) - Other postretirement benefit plan - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value $ 1,614 $ 1,577 $ 2,021
Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 308 339  
Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 511 450  
Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 795 788  
Short-term Investments      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 41 35  
Short-term Investments | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 41 35  
Short-term Investments | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Short-term Investments | Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Equity Securities, Domestic      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 76 78  
Equity Securities, Domestic | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Equity Securities, Domestic | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Equity Securities, Domestic | Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 76 78  
Equity Securities, International      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 50 70  
Equity Securities, International | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 7 9  
Equity Securities, International | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Equity Securities, International | Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 43 61  
Fixed Income Securities, Governmental      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 273 296  
Fixed Income Securities, Governmental | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 242 264  
Fixed Income Securities, Governmental | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 31 32  
Fixed Income Securities, Governmental | Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Fixed Income Securities, Corporate      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 671 590  
Fixed Income Securities, Corporate | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Fixed Income Securities, Corporate | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 459 396  
Fixed Income Securities, Corporate | Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 212 194  
Hedge Funds and Similar Investments      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 125 147  
Hedge Funds and Similar Investments | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 18 31  
Hedge Funds and Similar Investments | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 21 22  
Hedge Funds and Similar Investments | Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 86 94  
Private Equity and Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 378 361  
Private Equity and Other | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Private Equity and Other | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
Private Equity and Other | Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 378 361  
DTE Electric      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 1,070 1,052 $ 1,355
DTE Electric | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 203 226  
DTE Electric | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 337 298  
DTE Electric | Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 530 528  
DTE Electric | Short-term Investments      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 27 23  
DTE Electric | Short-term Investments | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 27 23  
DTE Electric | Short-term Investments | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
DTE Electric | Short-term Investments | Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
DTE Electric | Equity Securities, Domestic      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 48 50  
DTE Electric | Equity Securities, Domestic | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
DTE Electric | Equity Securities, Domestic | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
DTE Electric | Equity Securities, Domestic | Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 48 50  
DTE Electric | Equity Securities, International      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 31 44  
DTE Electric | Equity Securities, International | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 4 5  
DTE Electric | Equity Securities, International | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
DTE Electric | Equity Securities, International | Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 27 39  
DTE Electric | Fixed Income Securities, Governmental      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 182 199  
DTE Electric | Fixed Income Securities, Governmental | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 161 178  
DTE Electric | Fixed Income Securities, Governmental | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 21 21  
DTE Electric | Fixed Income Securities, Governmental | Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
DTE Electric | Fixed Income Securities, Corporate      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 447 396  
DTE Electric | Fixed Income Securities, Corporate | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
DTE Electric | Fixed Income Securities, Corporate | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 302 262  
DTE Electric | Fixed Income Securities, Corporate | Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 145 134  
DTE Electric | Hedge Funds and Similar Investments      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 83 98  
DTE Electric | Hedge Funds and Similar Investments | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 11 20  
DTE Electric | Hedge Funds and Similar Investments | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 14 15  
DTE Electric | Hedge Funds and Similar Investments | Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 58 63  
DTE Electric | Private Equity and Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 252 242  
DTE Electric | Private Equity and Other | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
DTE Electric | Private Equity and Other | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value 0 0  
DTE Electric | Private Equity and Other | Other      
Defined Benefit Plan Disclosure [Line Items]      
Plan assets at fair value $ 252 $ 242  
v3.24.0.1
Stock-Based Compensation (Details Textuals)
$ in Millions
 12 Months Ended
Dec. 31, 2023
USD ($)
$ / shares
shares
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Authorized limit of common stock shares (in shares) 20,162,716    
Performance units price per unit (in dollars per share) | $ / shares 1.00    
DTE Electric | DTE Energy      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Compensation cost charged against income (in millions) | $ $ 31 $ 40 $ 45
Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum award per employee (in shares) 500,000    
Restricted Stock Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum award per employee (in shares) 150,000    
Award vesting period 3 years    
Compensation cost charged against income (in millions) | $ $ 14 $ 15 $ 14
Performance Share Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum award per employee (in shares) 300,000    
Award vesting period 3 years    
Performance Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum award per employee (in shares) 1,000,000    
v3.24.0.1
Stock-Based Compensation (Components of Stock Based Compensation) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Components of stock based-compensation [Abstract]      
Stock-based compensation expense $ 48 $ 62 $ 71
Tax benefit $ 9 $ 11 $ 13
v3.24.0.1
Stock-Based Compensation (Activity Relating to Performance Share Awards) (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Compensation Expense Recorded [Line Items]      
Compensation expense $ 48 $ 62 $ 71
Performance Share Awards      
Compensation Expense Recorded [Line Items]      
Weighted grant date fair value of awards granted (in dollars per share) $ 112.73 $ 120.25 $ 118.43
Awards settled in cash $ 9 $ 10 $ 12
Awards settled in stock 59 72 74
Compensation expense $ 34 $ 47 $ 58
v3.24.0.1
Stock-Based Compensation (Performance Share Awards Activity) (Details) - Performance shares - $ / shares
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Performance Shares      
Balance at beginning of period (in shares) 1,018,057    
Grants (in shares) 347,242    
Forfeitures (in shares) (65,632)    
Payouts (in shares) (309,174)    
Balance at end of period (in shares) 990,493 1,018,057  
Weighted Average Grant Date Fair Value      
Balance at beginning of period (in dollars per share) $ 120.91    
Grants (in dollars per share) 112.73 $ 120.25 $ 118.43
Forfeitures (in dollars per share) 112.51    
Payouts (in dollars per share) 112.30    
Balance at end of period (in dollars per share) $ 121.29 $ 120.91  
v3.24.0.1
Stock-Based Compensation (Unrecognized Compensation Costs) (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2023
USD ($)
Share Based Compensation Unrecognized and Non-Vested Cost [Line Items]  
Unrecognized Compensation Cost $ 60
Weighted Average to be Recognized 1 year 2 months 4 days
Stock awards  
Share Based Compensation Unrecognized and Non-Vested Cost [Line Items]  
Unrecognized Compensation Cost $ 20
Weighted Average to be Recognized 1 year 4 months 20 days
Performance shares  
Share Based Compensation Unrecognized and Non-Vested Cost [Line Items]  
Unrecognized Compensation Cost $ 40
Weighted Average to be Recognized 1 year 29 days
v3.24.0.1
Segment and Related Information (Details Textuals)
customer in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2023
USD ($)
customer
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Segment Reporting [Abstract]      
Number of electric utility customers | customer 2.3    
Number of gas utility customers | customer 1.3    
Segment Reporting Information [Line Items]      
Operating Revenues — Non-utility operations $ 5,279 $ 10,985 $ 7,676
Continuing operations      
Segment Reporting Information [Line Items]      
Operating Revenues — Non-utility operations     7,676
Reclassifications and Eliminations      
Segment Reporting Information [Line Items]      
Operating Revenues — Non-utility operations $ (156) $ (186)  
Reclassifications and Eliminations | Continuing operations      
Segment Reporting Information [Line Items]      
Operating Revenues — Non-utility operations     (651)
Reclassifications and Eliminations | Gas Storage and Pipelines | Continuing operations      
Segment Reporting Information [Line Items]      
Operating Revenues — Non-utility operations     $ 14
v3.24.0.1
Segment and Related Information (Inter-Segment Billing) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Segment Reporting Information [Line Items]      
Operating Revenues $ (12,745) $ (19,228) $ (14,964)
Operating Revenues — Non-utility operations (5,279) (10,985) (7,676)
Reclassifications and Eliminations      
Segment Reporting Information [Line Items]      
Operating Revenues 242 264 711
Operating Revenues — Non-utility operations 156 186  
Reclassifications and Eliminations | Electric      
Segment Reporting Information [Line Items]      
Operating Revenues 72 71 64
Operating Revenues — Non-utility operations 3 6 4
Reclassifications and Eliminations | Gas      
Segment Reporting Information [Line Items]      
Operating Revenues 17 13 14
Reclassifications and Eliminations | DTE Vantage      
Segment Reporting Information [Line Items]      
Operating Revenues 68 78 575
Reclassifications and Eliminations | Energy Trading      
Segment Reporting Information [Line Items]      
Operating Revenues 85 102 56
Reclassifications and Eliminations | Corporate and Other      
Segment Reporting Information [Line Items]      
Operating Revenues $ 0 $ 0 $ 2
v3.24.0.1
Segment and Related Information (Financial Data) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Segment Reporting Information [Line Items]      
Operating Revenues — Utility operations $ 7,466 $ 8,243 $ 7,288
Operating Revenues — Non-utility operations 5,279 10,985 7,676
Depreciation and amortization 1,606 1,468 1,377
Interest expense 791 675 630
Interest income (57) (46) (22)
Equity earnings (losses) of equity method investees 3 (14) 38
Income Tax Expense (Benefit) 169 29 (130)
Net Income (Loss) Attributable to DTE Energy Company 1,397 1,083 907
Investments in equity method investees 166 165  
Capital expenditures and acquisitions 3,934 3,378 3,772
Goodwill 1,993 1,993  
Total Assets 44,755 42,683 39,719
Loss on extinguishment of debt 0 0 393
Continuing operations      
Segment Reporting Information [Line Items]      
Operating Revenues — Utility operations     7,288
Operating Revenues — Non-utility operations     7,676
Depreciation and amortization     1,377
Interest expense     630
Interest income     (22)
Equity earnings (losses) of equity method investees     38
Income Tax Expense (Benefit)     (130)
Net Income (Loss) Attributable to DTE Energy Company     796
Investments in equity method investees     187
Capital expenditures and acquisitions     3,712
Goodwill     1,993
Total Assets     39,719
Discontinued operations      
Segment Reporting Information [Line Items]      
Net Income (Loss) Attributable to DTE Energy Company     111
Capital expenditures and acquisitions     60
Total Assets     0
Operating Segments | Electric      
Segment Reporting Information [Line Items]      
Operating Revenues — Utility operations 5,804 6,397  
Operating Revenues — Non-utility operations 14 15  
Depreciation and amortization 1,340 1,218  
Interest expense 432 372  
Interest income (20) (8)  
Equity earnings (losses) of equity method investees 0 0  
Income Tax Expense (Benefit) 78 25  
Net Income (Loss) Attributable to DTE Energy Company 772 956  
Investments in equity method investees 5 6  
Capital expenditures and acquisitions 3,128 2,620  
Goodwill 1,208 1,208  
Total Assets 32,292 30,342  
Operating Segments | Electric | Continuing operations      
Segment Reporting Information [Line Items]      
Operating Revenues — Utility operations     5,809
Operating Revenues — Non-utility operations     12
Depreciation and amortization     1,122
Interest expense     338
Interest income     0
Equity earnings (losses) of equity method investees     0
Income Tax Expense (Benefit)     104
Net Income (Loss) Attributable to DTE Energy Company     864
Investments in equity method investees     6
Capital expenditures and acquisitions     3,016
Goodwill     1,208
Total Assets     28,524
Operating Segments | Gas      
Segment Reporting Information [Line Items]      
Operating Revenues — Utility operations 1,748 1,924  
Operating Revenues — Non-utility operations 0 0  
Depreciation and amortization 209 192  
Interest expense 102 91  
Interest income (9) (8)  
Equity earnings (losses) of equity method investees 1 2  
Income Tax Expense (Benefit) 93 88  
Net Income (Loss) Attributable to DTE Energy Company 294 272  
Investments in equity method investees 16 15  
Capital expenditures and acquisitions 746 693  
Goodwill 743 743  
Total Assets 7,722 7,321  
Operating Segments | Gas | Continuing operations      
Segment Reporting Information [Line Items]      
Operating Revenues — Utility operations     1,553
Operating Revenues — Non-utility operations     0
Depreciation and amortization     177
Interest expense     81
Interest income     (6)
Equity earnings (losses) of equity method investees     1
Income Tax Expense (Benefit)     38
Net Income (Loss) Attributable to DTE Energy Company     214
Investments in equity method investees     13
Capital expenditures and acquisitions     621
Goodwill     743
Total Assets     6,729
Operating Segments | DTE Vantage      
Segment Reporting Information [Line Items]      
Operating Revenues — Utility operations 0 0  
Operating Revenues — Non-utility operations 809 848  
Depreciation and amortization 53 52  
Interest expense 15 15  
Interest income (32) (28)  
Equity earnings (losses) of equity method investees 7 0  
Income Tax Expense (Benefit) (22) 18  
Net Income (Loss) Attributable to DTE Energy Company 153 92  
Investments in equity method investees 118 111  
Capital expenditures and acquisitions 57 62  
Goodwill 25 25  
Total Assets 1,122 1,077  
Operating Segments | DTE Vantage | Continuing operations      
Segment Reporting Information [Line Items]      
Operating Revenues — Utility operations     0
Operating Revenues — Non-utility operations     1,482
Depreciation and amortization     71
Interest expense     28
Interest income     (23)
Equity earnings (losses) of equity method investees     8
Income Tax Expense (Benefit)     (31)
Net Income (Loss) Attributable to DTE Energy Company     168
Investments in equity method investees     118
Capital expenditures and acquisitions     69
Goodwill     25
Total Assets     983
Operating Segments | Energy Trading      
Segment Reporting Information [Line Items]      
Operating Revenues — Utility operations 0 0  
Operating Revenues — Non-utility operations 4,612 10,308  
Depreciation and amortization 4 5  
Interest expense 18 17  
Interest income (9) (6)  
Equity earnings (losses) of equity method investees 0 0  
Income Tax Expense (Benefit) 112 (31)  
Net Income (Loss) Attributable to DTE Energy Company 336 (92)  
Investments in equity method investees 0 0  
Capital expenditures and acquisitions 3 3  
Goodwill 17 17  
Total Assets 1,166 1,385  
Operating Segments | Energy Trading | Continuing operations      
Segment Reporting Information [Line Items]      
Operating Revenues — Utility operations     0
Operating Revenues — Non-utility operations     6,831
Depreciation and amortization     6
Interest expense     5
Interest income     (1)
Equity earnings (losses) of equity method investees     0
Income Tax Expense (Benefit)     (27)
Net Income (Loss) Attributable to DTE Energy Company     (83)
Investments in equity method investees     0
Capital expenditures and acquisitions     6
Goodwill     17
Total Assets     1,174
Operating Segments | Corporate and Other      
Segment Reporting Information [Line Items]      
Operating Revenues — Utility operations 0 0  
Operating Revenues — Non-utility operations 0 0  
Depreciation and amortization 0 1  
Interest expense 270 210  
Interest income (33) (26)  
Equity earnings (losses) of equity method investees (5) (16)  
Income Tax Expense (Benefit) (92) (71)  
Net Income (Loss) Attributable to DTE Energy Company (158) (145)  
Investments in equity method investees 27 33  
Capital expenditures and acquisitions 0 0  
Goodwill 0 0  
Total Assets 4,150 4,409  
Loss on extinguishment of debt     376
Deferred tax benefit for deferred tax remeasurement     85
Operating Segments | Corporate and Other | Continuing operations      
Segment Reporting Information [Line Items]      
Operating Revenues — Utility operations     0
Operating Revenues — Non-utility operations     2
Depreciation and amortization     1
Interest expense     270
Interest income     (84)
Equity earnings (losses) of equity method investees     29
Income Tax Expense (Benefit)     (214)
Net Income (Loss) Attributable to DTE Energy Company     (367)
Investments in equity method investees     50
Capital expenditures and acquisitions     0
Goodwill     0
Total Assets     4,281
Reclassifications and Eliminations      
Segment Reporting Information [Line Items]      
Operating Revenues — Utility operations (86) (78)  
Operating Revenues — Non-utility operations (156) (186)  
Depreciation and amortization 0 0  
Interest expense (46) (30)  
Interest income 46 30  
Equity earnings (losses) of equity method investees 0 0  
Income Tax Expense (Benefit) 0 0  
Net Income (Loss) Attributable to DTE Energy Company 0 0  
Investments in equity method investees 0 0  
Capital expenditures and acquisitions 0 0  
Goodwill 0 0  
Total Assets (1,697) (1,851)  
Reclassifications and Eliminations | Continuing operations      
Segment Reporting Information [Line Items]      
Operating Revenues — Utility operations     (74)
Operating Revenues — Non-utility operations     (651)
Depreciation and amortization     0
Interest expense     (92)
Interest income     92
Equity earnings (losses) of equity method investees     0
Income Tax Expense (Benefit)     0
Net Income (Loss) Attributable to DTE Energy Company     0
Investments in equity method investees     0
Capital expenditures and acquisitions     0
Goodwill     0
Total Assets     (1,972)
Reclassifications and Eliminations | Electric      
Segment Reporting Information [Line Items]      
Operating Revenues — Non-utility operations $ (3) $ (6) $ (4)
v3.24.0.1
Related Party Transactions (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Related Party Transaction [Line Items]      
Dividends declared $ 800,000,000 $ 710,000,000 $ 752,000,000
Dividends paid 752,000,000 685,000,000 791,000,000
DTE Electric      
Related Party Transaction [Line Items]      
Dividends declared 1,002,000,000 763,000,000 588,000,000
Dividends paid 1,002,000,000 763,000,000 588,000,000
DTE Electric | DTE Energy      
Related Party Transaction [Line Items]      
Dividends declared 1,002,000,000 763,000,000 588,000,000
Dividends paid 1,002,000,000 763,000,000 588,000,000
Capital contribution from DTE Energy $ 759,000,000 $ 600,000,000 555,000,000
DTE Electric | Affiliates      
Related Party Transaction [Line Items]      
Weighted average interest rate 5.60% 4.40%  
DTE Electric | DTE Energy Foundation      
Related Party Transaction [Line Items]      
Charitable contributions to foundation $ 0 $ 0 2,000,000
DTE Electric | Energy sales      
Related Party Transaction [Line Items]      
Revenues and Other Income/ Costs 11,000,000 8,000,000 9,000,000
DTE Electric | Other services and interest      
Related Party Transaction [Line Items]      
Revenues and Other Income/ Costs 3,000,000 0 2,000,000
DTE Electric | Shared capital assets      
Related Party Transaction [Line Items]      
Revenues and Other Income/ Costs 58,000,000 57,000,000 49,000,000
DTE Electric | Fuel and purchased power      
Related Party Transaction [Line Items]      
Revenues and Other Income/ Costs 50,000,000 58,000,000 13,000,000
DTE Electric | Other services and interest      
Related Party Transaction [Line Items]      
Revenues and Other Income/ Costs 2,000,000 1,000,000 0
DTE Electric | Corporate expenses      
Related Party Transaction [Line Items]      
Revenues and Other Income/ Costs $ 299,000,000 $ 379,000,000 $ 391,000,000