DUKE ENERGY CORP, 10-Q filed on 8/5/2025
Quarterly Report
v3.25.2
Cover Page - shares
 6 Months Ended
Jun. 30, 2025
Jul. 31, 2025
Entity Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2025  
Document Transition Report false  
Entity File Number 1-32853  
Entity Registrant Name DUKE ENERGY CORPORATION  
Entity Tax Identification Number 20-2777218  
Entity Incorporation, State or Country Code DE  
Entity Address, Address Line One 525 South Tryon Street  
Entity Address, City or Town Charlotte  
Entity Address, State or Province NC  
Entity Address, Postal Zip Code 28202  
City Area Code 800  
Local Phone Number 488-3853  
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  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   777,624,467
Entity Central Index Key 0001326160  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Duke Energy Carolinas    
Entity Information [Line Items]    
Entity File Number 1-4928  
Entity Registrant Name DUKE ENERGY CAROLINAS, LLC  
Entity Tax Identification Number 56-0205520  
Entity Incorporation, State or Country Code NC  
Entity Address, Address Line One 525 South Tryon Street  
Entity Address, City or Town Charlotte  
Entity Address, State or Province NC  
Entity Address, Postal Zip Code 28202  
City Area Code 800  
Local Phone Number 488-3853  
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  
Entity Shell Company false  
Entity Central Index Key 0000030371  
Current Fiscal Year End Date --12-31  
Progress Energy    
Entity Information [Line Items]    
Entity File Number 1-15929  
Entity Registrant Name PROGRESS ENERGY, INC.  
Entity Tax Identification Number 56-2155481  
Entity Incorporation, State or Country Code NC  
Entity Address, Address Line One 411 Fayetteville Street  
Entity Address, City or Town Raleigh  
Entity Address, State or Province NC  
Entity Address, Postal Zip Code 27601  
City Area Code 800  
Local Phone Number 488-3853  
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  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   100
Entity Central Index Key 0001094093  
Current Fiscal Year End Date --12-31  
Duke Energy Progress    
Entity Information [Line Items]    
Entity File Number 1-3382  
Entity Registrant Name DUKE ENERGY PROGRESS, LLC  
Entity Tax Identification Number 56-0165465  
Entity Incorporation, State or Country Code NC  
Entity Address, Address Line One 411 Fayetteville Street  
Entity Address, City or Town Raleigh  
Entity Address, State or Province NC  
Entity Address, Postal Zip Code 27601  
City Area Code 800  
Local Phone Number 488-3853  
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  
Entity Shell Company false  
Entity Central Index Key 0000017797  
Current Fiscal Year End Date --12-31  
Duke Energy Florida    
Entity Information [Line Items]    
Entity File Number 1-3274  
Entity Registrant Name DUKE ENERGY FLORIDA, LLC  
Entity Tax Identification Number 59-0247770  
Entity Incorporation, State or Country Code FL  
Entity Address, Address Line One 299 First Avenue North  
Entity Address, City or Town St. Petersburg  
Entity Address, State or Province FL  
Entity Address, Postal Zip Code 33701  
City Area Code 800  
Local Phone Number 488-3853  
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  
Entity Shell Company false  
Entity Central Index Key 0000037637  
Current Fiscal Year End Date --12-31  
Duke Energy Ohio    
Entity Information [Line Items]    
Entity File Number 1-1232  
Entity Registrant Name DUKE ENERGY OHIO, INC.  
Entity Tax Identification Number 31-0240030  
Entity Incorporation, State or Country Code OH  
Entity Address, Address Line One 139 East Fourth Street  
Entity Address, City or Town Cincinnati  
Entity Address, State or Province OH  
Entity Address, Postal Zip Code 45202  
City Area Code 800  
Local Phone Number 488-3853  
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  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   89,663,086
Entity Central Index Key 0000020290  
Current Fiscal Year End Date --12-31  
Duke Energy Indiana    
Entity Information [Line Items]    
Entity File Number 1-3543  
Entity Registrant Name DUKE ENERGY INDIANA, LLC  
Entity Tax Identification Number 35-0594457  
Entity Incorporation, State or Country Code IN  
Entity Address, Address Line One 1000 East Main Street  
Entity Address, City or Town Plainfield  
Entity Address, State or Province IN  
Entity Address, Postal Zip Code 46168  
City Area Code 800  
Local Phone Number 488-3853  
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  
Entity Shell Company false  
Entity Central Index Key 0000081020  
Current Fiscal Year End Date --12-31  
Piedmont    
Entity Information [Line Items]    
Entity File Number 1-6196  
Entity Registrant Name PIEDMONT NATURAL GAS COMPANY, INC.  
Entity Tax Identification Number 56-0556998  
Entity Incorporation, State or Country Code NC  
Entity Address, Address Line One 525 South Tryon Street  
Entity Address, City or Town Charlotte  
Entity Address, State or Province NC  
Entity Address, Postal Zip Code 28202  
City Area Code 800  
Local Phone Number 488-3853  
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  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   100
Entity Central Index Key 0000078460  
Current Fiscal Year End Date --12-31  
Common Stock, $0.001 par value    
Entity Information [Line Items]    
Title of 12(b) Security Common Stock, $0.001 par value  
Trading Symbol DUK  
Security Exchange Name NYSE  
5.625% Junior Subordinated Debentures due September 15, 2078    
Entity Information [Line Items]    
Title of 12(b) Security 5.625% Junior Subordinated Debentures  
Trading Symbol DUKB  
Security Exchange Name NYSE  
Depositary Shares    
Entity Information [Line Items]    
Title of 12(b) Security Depositary Shares  
Trading Symbol DUK PR A  
Security Exchange Name NYSE  
3.10% Senior Notes due 2028    
Entity Information [Line Items]    
Title of 12(b) Security 3.10% Senior Notes  
Trading Symbol DUK 28A  
Security Exchange Name NYSE  
3.85% Senior Notes due 2034    
Entity Information [Line Items]    
Title of 12(b) Security 3.85% Senior Notes  
Trading Symbol DUK 34  
Security Exchange Name NYSE  
3.75% Senior Notes due 2031    
Entity Information [Line Items]    
Title of 12(b) Security 3.75% Senior Notes  
Trading Symbol DUK 31A  
Security Exchange Name NYSE  
v3.25.2
Condensed Consolidated Statements of Operations - USD ($)
shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Operating Revenues        
Regulated electric $ 6,968 $ 6,746 $ 14,032 $ 13,478
Regulated natural gas 462 347 1,567 1,213
Nonregulated electric and other 78 79 158 152
Total operating revenues 7,508 7,172 15,757 14,843
Operating Expenses        
Operation, maintenance and other 1,655 1,320 3,154 2,699
Depreciation and amortization 1,583 1,409 3,095 2,796
Property and other taxes 415 393 843 779
Impairment of assets and other charges 3 43 3 44
Total operating expenses 5,692 5,471 11,604 11,191
Gain (Loss) on Sales of Other Assets and Other, net 14 6 20 18
Operating Income 1,830 1,707 4,173 3,670
Other Income and Expenses        
Equity in earnings of unconsolidated affiliates 11 21 22 38
Other income and expenses, net 183 167 315 336
Total other income and expenses 194 188 337 374
Interest Expense 897 824 1,786 1,641
Income From Continuing Operations Before Income Taxes 1,127 1,071 2,724 2,403
Income Tax Expense From Continuing Operations 119 140 312 318
Income From Continuing Operations 1,008 931 2,412 2,085
Loss From Discontinued Operations, net of tax (1) (10) (1) (13)
Net Income 1,007 921 2,411 2,072
Less: Net Income Attributable to Noncontrolling Interests 23 21 48 34
Net Income 984 900 2,363 2,038
Less: Preferred Dividends 13 14 27 53
Net Income Available to Duke Energy Corporation Common Stockholders $ 971 $ 886 $ 2,336 $ 1,985
Income from continuing operations available to Duke Energy Corporation common stockholders        
Basic (in usd per share) $ 1.25 $ 1.14 $ 3.00 $ 2.59
Diluted (in usd per share) 1.25 1.14 3.00 2.59
Loss from discontinued operations attributable to Duke Energy Corporation common stockholders        
Basic (in usd per share) 0 (0.01) 0 (0.02)
Diluted (in usd per share) 0 (0.01) 0 (0.02)
Net income available to Duke Energy Corporation common stockholders        
Basic (in usd per share) 1.25 1.13 3.00 2.57
Diluted (in usd per share) $ 1.25 $ 1.13 $ 3.00 $ 2.57
Weighted Average Shares Outstanding        
Basic (in shares) 777 772 777 771
Diluted (in shares) 777 772 777 771
Fuel used in electric generation and purchased power        
Operating Expenses        
Cost of sales $ 1,878 $ 2,228 $ 3,977 $ 4,563
Cost of natural gas        
Operating Expenses        
Cost of sales $ 158 $ 78 $ 532 $ 310
v3.25.2
Condensed Consolidated Statements of Comprehensive Income - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]        
Net income $ 1,007 $ 921 $ 2,411 $ 2,072
Other Comprehensive Income (Loss), net of tax        
Pension and OPEB adjustments [1] 0 0 0 16
Net unrealized gains (losses) on cash flow hedges [1] 6 26 (4) 117
Reclassification into earnings from cash flow hedges [1] (2) (3) 12 (1)
Net unrealized gains (losses) on fair value hedges [1] 6 (29) (35) (21)
Unrealized losses on available-for-sale securities [1] (1) (1) 2 (3)
Other Comprehensive Income (Loss), net of tax [1] 9 (7) (25) 108
Comprehensive Income 1,016 914 2,386 2,180
Less: Comprehensive Income Attributable to Noncontrolling Interests 23 21 48 34
Comprehensive Income 993 893 2,338 2,146
Less: Preferred Dividends 13 14 27 53
Comprehensive Income Available to Duke Energy Corporation Common Stockholders $ 980 $ 879 $ 2,311 $ 2,093
[1] Net of income tax expense of $3 million and income tax benefit of $2 million for the three months ended June 30, 2025, and 2024, respectively and an income tax benefit of $7 million and income tax expense of $32 million for the six months ended June 30, 2025, and 2024, respectively.
v3.25.2
Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Statement of Comprehensive Income [Abstract]        
Other comprehensive income, tax expense (benefit) $ 3 $ (2) $ (7) $ 32
v3.25.2
Condensed Consolidated Balance Sheets - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Current Assets    
Cash and cash equivalents $ 344 $ 314
Receivables (net of allowance for doubtful accounts) 4,089 2,232
Receivables of VIEs (net of allowance for doubtful accounts) 11 1,889
Receivable from sales of Commercial Renewables Disposal Groups 0 551
Inventory 4,434 4,509
Regulatory assets 2,269 2,756
Assets held for sale 0 4
Other (includes amounts related to VIEs) 1,001 695
Total current assets 12,148 12,950
Property, Plant and Equipment    
Cost 186,261 180,806
Accumulated depreciation and amortization (59,613) (57,503)
Net property, plant and equipment 126,648 123,303
Other Noncurrent Assets    
Goodwill 19,303 19,303
Regulatory assets 14,172 14,254
Nuclear decommissioning trust funds 12,109 11,434
Operating lease right-of-use assets, net 1,209 1,148
Investments in equity method unconsolidated affiliates 332 353
Assets held for sale 0 89
Other 3,792 3,509
Total other noncurrent assets 50,917 50,090
Total Assets 189,713 186,343
Current Liabilities    
Accounts payable 4,373 5,479
Notes payable and commercial paper 3,473 3,584
Taxes accrued 837 851
Interest accrued 881 855
Current maturities of long-term debt 5,046 4,349
Asset retirement obligations 636 650
Regulatory liabilities 1,257 1,425
Liabilities associated with assets held for sale 18 80
Other 1,887 2,084
Total current liabilities 18,408 19,357
Long-Term Debt (includes amounts related to VIEs) 78,914 76,340
Other Noncurrent Liabilities    
Deferred income taxes 11,990 11,424
Asset retirement obligations 9,316 9,342
Regulatory liabilities 15,047 14,694
Operating lease liabilities 1,020 957
Accrued pension and other post-retirement benefit costs 410 434
Investment tax credits 882 894
Liabilities associated with assets held for sale 0 89
Other (includes $15 at 2024 related to VIEs) 1,696 1,556
Total other noncurrent liabilities 40,361 39,390
Commitments and Contingencies
Equity    
Common stock 1 1
Additional paid-in capital 45,573 45,494
Retained earnings 4,141 3,431
Accumulated other comprehensive income 203 228
Total Duke Energy Corporation stockholders' equity 50,891 50,127
Noncontrolling interests 1,139 1,129
Total equity 52,030 51,256
Total Liabilities and Equity 189,713 186,343
Preferred stock, Series A    
Equity    
Preferred stock $ 973 $ 973
v3.25.2
Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Allowance for doubtful accounts - receivables $ 199 $ 124
Inventory 4,434 4,509
Regulatory assets 2,269 2,756
Current Assets: Other 1,001 695
Regulatory assets 14,172 14,254
Accounts payable 4,373 5,479
Current maturities of long-term debt 5,046 4,349
Long-Term Debt 78,914 76,340
Other $ 1,696 $ 1,556
Common stock, par value (in usd per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 2,000,000,000 2,000,000,000
Common stock, shares outstanding (in shares) 778,000,000 776,000,000
Preferred stock, Series A    
Preferred stock, par value (in usd per share) $ 0.001 $ 0.001
Preferred stock, depositary shares authorized (in shares) 40,000,000 40,000,000
Preferred stock, depositary shares outstanding (in shares) 40,000,000 40,000,000
Variable Interest Entity    
Allowance for doubtful accounts of VIEs - receivables   $ 85
Inventory $ 548 494
Regulatory assets 120 120
Current Assets: Other 81 90
Regulatory assets 1,651 1,705
Accounts payable 247 214
Current maturities of long-term debt 110 1,012
Long-Term Debt $ 1,782 1,842
Other   $ 27
v3.25.2
Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income $ 2,411 $ 2,072
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, amortization and accretion (including amortization of nuclear fuel) 3,659 3,100
Equity component of AFUDC (147) (116)
Losses on sales of Commercial Renewables Disposal Groups 4 5
Gains on sales of other assets (20) (18)
Impairment of assets and other charges 3 44
Deferred income taxes 611 264
Equity in earnings of unconsolidated affiliates (22) (38)
Payments for asset retirement obligations (241) (262)
(Increase) decrease in    
Net realized and unrealized mark-to-market and hedging transactions 266 (37)
Receivables 53 (19)
Inventory 85 (86)
Other current assets (243) 502
Increase (decrease) in    
Accounts payable (987) (215)
Taxes accrued (7) (68)
Other current liabilities (374) (257)
Other assets (82) 331
Other liabilities 71 225
Net cash provided by operating activities 5,040 5,427
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (6,428) (6,204)
Contributions to equity method investments 0 (8)
Purchases of debt and equity securities (3,446) (2,275)
Proceeds from sales and maturities of debt and equity securities 3,535 2,319
Net proceeds from the sales of Commercial Renewables Disposal Groups 559 0
Other (484) (407)
Net cash used in investing activities (6,264) (6,575)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from the issuance of long-term debt 4,848 6,372
Issuance of common stock 14 20
Payments for the redemption of long-term debt (1,815) (2,731)
Proceeds from the issuance of short-term debt with original maturities greater than 90 days 0 502
Payments for the redemption of short-term debt with original maturities greater than 90 days (5) (824)
Notes payable and commercial paper (185) (414)
Contributions from noncontrolling interests 0 47
Dividends paid (1,610) (1,590)
Other (2) (108)
Net cash provided by financing activities 1,245 1,274
Net increase in cash, cash equivalents and restricted cash 21 126
Cash, cash equivalents and restricted cash at beginning of period 421 357
Cash, cash equivalents and restricted cash at end of period 442 483
Significant non-cash transactions:    
Accrued capital expenditures $ 1,929 $ 1,721
v3.25.2
Condensed Consolidated Statements of Changes in Equity - USD ($)
shares in Millions, $ in Millions
Total
Total Equity
Preferred Stock
Common Stock
Additional Paid-in Capital
Retained Earnings
Net Gains (Losses) on Hedges
 [1]
Net Unrealized Gains (Losses) on Available-for-Sale Securities
Pension and OPEB Adjustments
Noncontrolling Interests
Beginning Balance at Dec. 31, 2023 $ 50,187 $ 49,112 $ 1,962 $ 1 $ 44,920 $ 2,235 $ 98 $ (15) $ (89) $ 1,075
Beginning Balance (in shares) at Dec. 31, 2023       771            
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income (loss) [2] 2,019 1,985       1,985       34
Other comprehensive income (loss) 108 [3] 108         95 (3) 16  
Common stock issuances, including dividend reinvestment and employee benefits (in shares)       1            
Common stock issuances, including dividend reinvestment and employee benefits 86 86     86          
Common stock dividends (1,586) (1,586)       (1,586)        
Sale of Commercial Renewables Disposal Groups [4] (51)                 (51)
Contributions from noncontrolling interests, net of transaction costs 47                 47
Distributions to noncontrolling interest in subsidiaries (5)                 (5)
Other 1 2     1 1       (1)
Ending Balance at Jun. 30, 2024 50,806 49,707 1,962 $ 1 45,007 2,635 193 (18) (73) 1,099
Ending Balance (in shares) at Jun. 30, 2024       772            
Beginning Balance at Mar. 31, 2024 50,638 49,551 1,962 $ 1 44,937 2,542 199 (17) (73) 1,087
Beginning Balance (in shares) at Mar. 31, 2024       772            
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income (loss) [2] 907 886       886       21
Other comprehensive income (loss) (7) [3] (7)         (6) (1)    
Common stock issuances, including dividend reinvestment and employee benefits 70 70     70          
Common stock dividends (794) (794)       (794)        
Sale of Commercial Renewables Disposal Groups [4] (51)                 (51)
Contributions from noncontrolling interests, net of transaction costs 47                 47
Distributions to noncontrolling interest in subsidiaries (5)                 (5)
Other 1 1       1        
Ending Balance at Jun. 30, 2024 50,806 49,707 1,962 $ 1 45,007 2,635 193 (18) (73) 1,099
Ending Balance (in shares) at Jun. 30, 2024       772            
Beginning Balance at Dec. 31, 2024 $ 51,256 50,127 973 $ 1 45,494 3,431 326 (17) (81) 1,129
Beginning Balance (in shares) at Dec. 31, 2024 776     776            
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income (loss) [2] $ 2,384 2,336       2,336       48
Other comprehensive income (loss) (25) [3] (25)         (27) 2    
Common stock issuances, including dividend reinvestment and employee benefits (in shares)       2            
Common stock issuances, including dividend reinvestment and employee benefits 78 78     78          
Common stock dividends (1,629) (1,629)       (1,629)        
Sale of Commercial Renewables Disposal Groups [4] (18)                 (18)
Distributions to noncontrolling interest in subsidiaries (14)                 (14)
Other (2) 4     1 3       (6)
Ending Balance at Jun. 30, 2025 $ 52,030 50,891 973 $ 1 45,573 4,141 299 (15) (81) 1,139
Ending Balance (in shares) at Jun. 30, 2025 778     778            
Beginning Balance at Mar. 31, 2025 $ 51,794 50,670 973 $ 1 45,516 3,986 289 (14) (81) 1,124
Beginning Balance (in shares) at Mar. 31, 2025       777            
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income (loss) [2] 994 971       971       23
Other comprehensive income (loss) 9 [3] 9         10 (1)    
Common stock issuances, including dividend reinvestment and employee benefits (in shares)       1            
Common stock issuances, including dividend reinvestment and employee benefits 56 56     56          
Common stock dividends (815) (815)       (815)        
Distributions to noncontrolling interest in subsidiaries (8)                 (8)
Other   0     1 (1)        
Ending Balance at Jun. 30, 2025 $ 52,030 $ 50,891 $ 973 $ 1 $ 45,573 $ 4,141 $ 299 $ (15) $ (81) $ 1,139
Ending Balance (in shares) at Jun. 30, 2025 778     778            
[1] See Duke Energy Condensed Consolidated Statements of Comprehensive Income for detailed activity related to Cash Flow and Fair Value hedges.
[2] Net income available to Duke Energy Corporation Common Stockholders reflects preferred dividends.
[3] Net of income tax expense of $3 million and income tax benefit of $2 million for the three months ended June 30, 2025, and 2024, respectively and an income tax benefit of $7 million and income tax expense of $32 million for the six months ended June 30, 2025, and 2024, respectively.
[4] See Note 2 for additional information.
v3.25.2
Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Carolinas - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Operating Revenues $ 7,508 $ 7,172 $ 15,757 $ 14,843
Operating Expenses        
Operation, maintenance and other 1,655 1,320 3,154 2,699
Depreciation and amortization 1,583 1,409 3,095 2,796
Property and other taxes 415 393 843 779
Impairment of assets and other charges 3 43 3 44
Total operating expenses 5,692 5,471 11,604 11,191
Gain (Loss) on Sales of Other Assets and Other, net 14 6 20 18
Operating Income 1,830 1,707 4,173 3,670
Other Income and Expenses, net 194 188 337 374
Interest Expense 897 824 1,786 1,641
Income From Continuing Operations Before Income Taxes 1,127 1,071 2,724 2,403
Income Tax Expense From Continuing Operations 119 140 312 318
Comprehensive Income 993 893 2,338 2,146
Net Income 984 900 2,363 2,038
Duke Energy Carolinas        
Operating Revenues 2,231 2,297 4,755 4,704
Operating Expenses        
Cost of sales 571 749 1,374 1,609
Operation, maintenance and other 500 444 984 895
Depreciation and amortization 482 437 914 834
Property and other taxes 85 89 187 183
Impairment of assets and other charges (1) 33 (1) 34
Total operating expenses 1,637 1,752 3,458 3,555
Gain (Loss) on Sales of Other Assets and Other, net 6 0 6 1
Operating Income 600 545 1,303 1,150
Other Income and Expenses, net 61 62 122 123
Interest Expense 200 168 400 348
Income From Continuing Operations Before Income Taxes 461 439 1,025 925
Income Tax Expense From Continuing Operations 36 48 87 104
Comprehensive Income 425 391 938 821
Net Income $ 425 $ 391 $ 938 $ 821
v3.25.2
Condensed Consolidated Balance Sheets - Duke Energy Carolinas - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Current Assets    
Cash and cash equivalents $ 344 $ 314
Receivables (net of allowance for doubtful accounts) 4,089 2,232
Receivables of VIEs (net of allowance for doubtful accounts) 11 1,889
Inventory 4,434 4,509
Regulatory assets 2,269 2,756
Other (includes amounts related to VIEs) 1,001 695
Total current assets 12,148 12,950
Property, Plant and Equipment    
Cost 186,261 180,806
Accumulated depreciation and amortization (59,613) (57,503)
Net property, plant and equipment 126,648 123,303
Other Noncurrent Assets    
Regulatory assets 14,172 14,254
Nuclear decommissioning trust funds 12,109 11,434
Operating lease right-of-use assets, net 1,209 1,148
Other 3,792 3,509
Total other noncurrent assets 50,917 50,090
Total Assets 189,713 186,343
Current Liabilities    
Accounts payable 4,373 5,479
Taxes accrued 837 851
Interest accrued 881 855
Current maturities of long-term debt 5,046 4,349
Asset retirement obligations 636 650
Regulatory liabilities 1,257 1,425
Other 1,887 2,084
Total current liabilities 18,408 19,357
Long-Term Debt (includes amounts related to VIEs) 78,914 76,340
Other Noncurrent Liabilities    
Deferred income taxes 11,990 11,424
Asset retirement obligations 9,316 9,342
Regulatory liabilities 15,047 14,694
Operating lease liabilities 1,020 957
Accrued pension and other post-retirement benefit costs 410 434
Investment tax credits 882 894
Other 1,696 1,556
Total other noncurrent liabilities 40,361 39,390
Commitments and Contingencies
Equity    
Accumulated other comprehensive income 203 228
Total Liabilities and Equity 189,713 186,343
Duke Energy Carolinas    
Current Assets    
Cash and cash equivalents 7 6
Receivables (net of allowance for doubtful accounts) 1,241 266
Receivables of VIEs (net of allowance for doubtful accounts) 1 1,054
Inventory 1,524 1,536
Regulatory assets 656 685
Other (includes amounts related to VIEs) 354 52
Total current assets 4,020 3,821
Property, Plant and Equipment    
Cost 60,065 58,382
Accumulated depreciation and amortization (19,637) (19,090)
Net property, plant and equipment 40,428 39,292
Other Noncurrent Assets    
Regulatory assets 3,985 4,199
Nuclear decommissioning trust funds 6,880 6,468
Operating lease right-of-use assets, net 88 98
Other 1,198 1,127
Total other noncurrent assets 12,151 11,892
Total Assets 56,599 55,005
Current Liabilities    
Accounts payable 1,347 1,809
Taxes accrued 275 627
Interest accrued 228 201
Current maturities of long-term debt 23 521
Asset retirement obligations 259 247
Regulatory liabilities 571 618
Other 477 541
Total current liabilities 3,672 4,805
Long-Term Debt (includes amounts related to VIEs) 18,022 16,669
Other Noncurrent Liabilities    
Deferred income taxes 4,146 4,052
Asset retirement obligations 3,716 3,743
Regulatory liabilities 6,893 6,592
Operating lease liabilities 78 87
Accrued pension and other post-retirement benefit costs 21 24
Investment tax credits 309 317
Other 672 576
Total other noncurrent liabilities 15,835 15,391
Commitments and Contingencies
Equity    
Member's equity 18,776 17,846
Accumulated other comprehensive income (6) (6)
Total equity 18,770 17,840
Total Liabilities and Equity 56,599 55,005
Duke Energy Carolinas | Affiliated Entity    
Current Assets    
Receivables (net of allowance for doubtful accounts) 210 157
Current Liabilities    
Accounts payable 492 241
Long-Term Debt (includes amounts related to VIEs) 300 300
Duke Energy Carolinas | Affiliated Entity | Notes Receivable    
Current Assets    
Receivables (net of allowance for doubtful accounts) $ 27 $ 65
v3.25.2
Condensed Consolidated Balance Sheets - Duke Energy Carolinas (Parenthetical) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Allowance for doubtful accounts - receivables $ 199 $ 124
Regulatory assets 2,269 2,756
Current Assets: Other 1,001 695
Regulatory assets 14,172 14,254
Current maturities of long-term debt 5,046 4,349
Long-Term Debt 78,914 76,340
Other 1,696 1,556
Variable Interest Entity    
Allowance for doubtful accounts of VIEs - receivables   85
Regulatory assets 120 120
Current Assets: Other 81 90
Regulatory assets 1,651 1,705
Current maturities of long-term debt 110 1,012
Long-Term Debt 1,782 1,842
Other   27
Duke Energy Carolinas    
Allowance for doubtful accounts - receivables 57 18
Allowance for doubtful accounts of VIEs - receivables   51
Regulatory assets 656 685
Current Assets: Other 354 52
Regulatory assets 3,985 4,199
Current maturities of long-term debt 23 521
Long-Term Debt 18,022 16,669
Other 672 576
Duke Energy Carolinas | Variable Interest Entity    
Regulatory assets 12 12
Current Assets: Other 9 9
Regulatory assets 184 189
Current maturities of long-term debt 10 510
Long-Term Debt $ 193 198
Other   $ 15
v3.25.2
Condensed Consolidated Statements of Cash Flows - Duke Energy Carolinas - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income $ 2,411 $ 2,072
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, amortization and accretion (including amortization of nuclear fuel) 3,659 3,100
Equity component of AFUDC (147) (116)
Gains on sales of other assets (20) (18)
Impairment of assets and other charges 3 44
Deferred income taxes 611 264
Payments for asset retirement obligations (241) (262)
(Increase) decrease in    
Receivables 53 (19)
Inventory 85 (86)
Other current assets (243) 502
Increase (decrease) in    
Accounts payable (987) (215)
Taxes accrued (7) (68)
Other current liabilities (374) (257)
Other assets (82) 331
Other liabilities 71 225
Net cash provided by operating activities 5,040 5,427
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (6,428) (6,204)
Purchases of debt and equity securities (3,446) (2,275)
Proceeds from sales and maturities of debt and equity securities 3,535 2,319
Other (484) (407)
Net cash used in investing activities (6,264) (6,575)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from the issuance of long-term debt 4,848 6,372
Payments for the redemption of long-term debt (1,815) (2,731)
Other (2) (108)
Net cash provided by financing activities 1,245 1,274
Net increase in cash, cash equivalents and restricted cash 21 126
Cash, cash equivalents and restricted cash at beginning of period 421 357
Cash, cash equivalents and restricted cash at end of period 442 483
Significant non-cash transactions:    
Accrued capital expenditures 1,929 1,721
Duke Energy Carolinas    
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income 938 821
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, amortization and accretion (including amortization of nuclear fuel) 1,048 966
Equity component of AFUDC (66) (58)
Gains on sales of other assets (6) (1)
Impairment of assets and other charges (1) 34
Deferred income taxes 209 (38)
Payments for asset retirement obligations (95) (80)
(Increase) decrease in    
Receivables 96 (61)
Receivables from affiliated companies (53) 11
Inventory 12 (25)
Other current assets (319) 9
Increase (decrease) in    
Accounts payable (281) (28)
Accounts payable to affiliated companies 251 3
Taxes accrued (352) 3
Other current liabilities (16) (145)
Other assets (70) 410
Other liabilities 33 (41)
Net cash provided by operating activities 1,328 1,780
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (2,145) (1,949)
Purchases of debt and equity securities (1,725) (1,211)
Proceeds from sales and maturities of debt and equity securities 1,725 1,211
Notes receivable from affiliated companies 38 0
Other (152) (178)
Net cash used in investing activities (2,259) (2,127)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from the issuance of long-term debt 1,343 1,018
Payments for the redemption of long-term debt (503) (9)
Notes payable to affiliated companies 0 (660)
Other 92 (1)
Net cash provided by financing activities 932 348
Net increase in cash, cash equivalents and restricted cash 1 1
Cash, cash equivalents and restricted cash at beginning of period 16 19
Cash, cash equivalents and restricted cash at end of period 17 20
Significant non-cash transactions:    
Accrued capital expenditures $ 698 $ 597
v3.25.2
Condensed Consolidated Statements of Changes in Equity - Duke Energy Carolinas - USD ($)
$ in Millions
Total
Duke Energy Carolinas
Duke Energy Carolinas
Member's Equity
Duke Energy Carolinas
Net Gains (Losses) on Hedges
Beginning balance at Dec. 31, 2023   $ 16,907 $ 16,913 $ (6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) $ 2,038 821 821  
Other 1 (20) (20)  
Ending balance at Jun. 30, 2024   17,708 17,714 (6)
Beginning balance at Mar. 31, 2024   17,337 17,343 (6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) 900 391 391  
Other 1 (20) (20)  
Ending balance at Jun. 30, 2024   17,708 17,714 (6)
Beginning balance at Dec. 31, 2024   17,840 17,846 (6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) 2,363 938 938  
Other (2) (8) (8)  
Ending balance at Jun. 30, 2025   18,770 18,776 (6)
Beginning balance at Mar. 31, 2025   18,353 18,359 (6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) $ 984 425 425  
Other   (8) (8)  
Ending balance at Jun. 30, 2025   $ 18,770 $ 18,776 $ (6)
v3.25.2
Condensed Consolidated Statements of Operations and Comprehensive Income - Progress Energy - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Operating Revenues $ 7,508 $ 7,172 $ 15,757 $ 14,843
Operating Expenses        
Operation, maintenance and other 1,655 1,320 3,154 2,699
Depreciation and amortization 1,583 1,409 3,095 2,796
Property and other taxes 415 393 843 779
Impairment of assets and other charges 3 43 3 44
Total operating expenses 5,692 5,471 11,604 11,191
Gain (Loss) on Sales of Other Assets and Other, net 14 6 20 18
Operating Income 1,830 1,707 4,173 3,670
Other Income and Expenses, net 194 188 337 374
Interest Expense 897 824 1,786 1,641
Income From Continuing Operations Before Income Taxes 1,127 1,071 2,724 2,403
Income Tax Expense From Continuing Operations 119 140 312 318
Net Income 984 900 2,363 2,038
Comprehensive Income 993 893 2,338 2,146
Progress Energy        
Operating Revenues 3,569 3,357 7,036 6,585
Operating Expenses        
Cost of sales 1,025 1,202 2,131 2,345
Operation, maintenance and other 843 588 1,531 1,216
Depreciation and amortization 609 568 1,240 1,155
Property and other taxes 175 166 347 324
Impairment of assets and other charges 0 9 0 9
Total operating expenses 2,652 2,533 5,249 5,049
Gain (Loss) on Sales of Other Assets and Other, net 6 6 12 13
Operating Income 923 830 1,799 1,549
Other Income and Expenses, net 75 60 130 122
Interest Expense 283 265 558 525
Income From Continuing Operations Before Income Taxes 715 625 1,371 1,146
Income Tax Expense From Continuing Operations 108 104 218 190
Net Income 607 521 1,153 956
Unrealized losses on available-for-sale securities (1) 0 (1) 0
Comprehensive Income $ 606 $ 521 $ 1,152 $ 956
v3.25.2
Condensed Consolidated Balance Sheets - Progress Energy - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Current Assets    
Cash and cash equivalents $ 344 $ 314
Receivables (net of allowance for doubtful accounts) 4,089 2,232
Receivables of VIEs (net of allowance for doubtful accounts) 11 1,889
Inventory 4,434 4,509
Regulatory assets 2,269 2,756
Other (includes amounts related to VIEs) 1,001 695
Total current assets 12,148 12,950
Property, Plant and Equipment    
Cost 186,261 180,806
Accumulated depreciation and amortization (59,613) (57,503)
Net property, plant and equipment 126,648 123,303
Other Noncurrent Assets    
Goodwill 19,303 19,303
Regulatory assets 14,172 14,254
Nuclear decommissioning trust funds 12,109 11,434
Operating lease right-of-use assets, net 1,209 1,148
Other 3,792 3,509
Total other noncurrent assets 50,917 50,090
Total Assets 189,713 186,343
Current Liabilities    
Accounts payable 4,373 5,479
Taxes accrued 837 851
Interest accrued 881 855
Current maturities of long-term debt 5,046 4,349
Asset retirement obligations 636 650
Regulatory liabilities 1,257 1,425
Other 1,887 2,084
Total current liabilities 18,408 19,357
Long-Term Debt (includes amounts related to VIEs) 78,914 76,340
Other Noncurrent Liabilities    
Deferred income taxes 11,990 11,424
Asset retirement obligations 9,316 9,342
Regulatory liabilities 15,047 14,694
Operating lease liabilities 1,020 957
Accrued pension and other post-retirement benefit costs 410 434
Investment tax credits 882 894
Other 1,696 1,556
Total other noncurrent liabilities 40,361 39,390
Commitments and Contingencies
Equity    
Common stock 1 1
Additional paid-in capital 45,573 45,494
Retained earnings 4,141 3,431
Accumulated other comprehensive income 203 228
Total Duke Energy Corporation stockholders' equity 50,891 50,127
Total Liabilities and Equity 189,713 186,343
Progress Energy    
Current Assets    
Cash and cash equivalents 58 73
Receivables (net of allowance for doubtful accounts) 1,737 707
Receivables of VIEs (net of allowance for doubtful accounts) 9 835
Inventory 2,090 2,086
Regulatory assets 1,176 1,647
Other (includes amounts related to VIEs) 229 182
Total current assets 6,297 5,555
Property, Plant and Equipment    
Cost 74,996 72,560
Accumulated depreciation and amortization (24,591) (23,586)
Net property, plant and equipment 50,405 48,974
Other Noncurrent Assets    
Goodwill 3,655 3,655
Regulatory assets 6,758 6,618
Nuclear decommissioning trust funds 5,230 4,967
Operating lease right-of-use assets, net 653 625
Other 1,313 1,242
Total other noncurrent assets 17,609 17,107
Total Assets 74,311 71,636
Current Liabilities    
Accounts payable 1,560 2,170
Taxes accrued 412 312
Interest accrued 266 232
Current maturities of long-term debt 1,817 1,517
Asset retirement obligations 223 231
Regulatory liabilities 356 522
Other 684 792
Total current liabilities 5,981 7,360
Long-Term Debt (includes amounts related to VIEs) 24,913 22,829
Other Noncurrent Liabilities    
Deferred income taxes 5,424 5,263
Asset retirement obligations 4,318 4,317
Regulatory liabilities 5,458 5,258
Operating lease liabilities 600 557
Accrued pension and other post-retirement benefit costs 246 254
Investment tax credits 383 385
Other 425 357
Total other noncurrent liabilities 16,854 16,391
Commitments and Contingencies
Equity    
Common stock 0 0
Additional paid-in capital 12,187 11,830
Retained earnings 14,237 13,086
Accumulated other comprehensive income (11) (10)
Total Duke Energy Corporation stockholders' equity 26,413 24,906
Total Liabilities and Equity 74,311 71,636
Progress Energy | Affiliated Entity    
Current Assets    
Receivables (net of allowance for doubtful accounts) 101 25
Current Liabilities    
Accounts payable 648 507
Notes payable to affiliated companies 15 1,077
Long-Term Debt (includes amounts related to VIEs) 150 150
Progress Energy | Affiliated Entity | Notes Receivable    
Current Assets    
Receivables (net of allowance for doubtful accounts) $ 897 $ 0
v3.25.2
Condensed Consolidated Balance Sheets - Progress Energy (Parenthetical) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Allowance for doubtful accounts - receivables $ 199 $ 124
Inventory 4,434 4,509
Regulatory assets 2,269 2,756
Current Assets: Other 1,001 695
Regulatory assets 14,172 14,254
Accounts payable 4,373 5,479
Current maturities of long-term debt 5,046 4,349
Long-Term Debt 78,914 76,340
Other $ 1,696 $ 1,556
Common stock, par value (in usd per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 2,000,000,000 2,000,000,000
Common stock, shares outstanding (in shares) 778,000,000 776,000,000
Variable Interest Entity    
Allowance for doubtful accounts of VIEs - receivables   $ 85
Inventory $ 548 494
Regulatory assets 120 120
Current Assets: Other 81 90
Regulatory assets 1,651 1,705
Accounts payable 247 214
Current maturities of long-term debt 110 1,012
Long-Term Debt 1,782 1,842
Other   27
Progress Energy    
Allowance for doubtful accounts - receivables 70 39
Inventory 2,090 2,086
Regulatory assets 1,176 1,647
Current Assets: Other 229 182
Regulatory assets 6,758 6,618
Accounts payable 1,560 2,170
Current maturities of long-term debt 1,817 1,517
Long-Term Debt 24,913 22,829
Other $ 425 $ 357
Common stock, par value (in usd per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 100 100
Common stock, shares outstanding (in shares) 100 100
Progress Energy | Variable Interest Entity    
Allowance for doubtful accounts of VIEs - receivables   $ 34
Inventory $ 548 494
Regulatory assets 108 108
Current Assets: Other 65 75
Regulatory assets 1,467 1,516
Accounts payable 241 208
Current maturities of long-term debt 100 502
Long-Term Debt $ 1,530 1,582
Other   $ 11
v3.25.2
Condensed Consolidated Statements of Cash Flows - Progress Energy - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income $ 2,411 $ 2,072
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, amortization and accretion (including amortization of nuclear fuel) 3,659 3,100
Equity component of AFUDC (147) (116)
Gains on sales of other assets (20) (18)
Impairment of assets and other charges 3 44
Deferred income taxes 611 264
Payments for asset retirement obligations (241) (262)
(Increase) decrease in    
Receivables 53 (19)
Inventory 85 (86)
Other current assets (243) 502
Increase (decrease) in    
Accounts payable (987) (215)
Taxes accrued (7) (68)
Other current liabilities (374) (257)
Other assets (82) 331
Other liabilities 71 225
Net cash provided by operating activities 5,040 5,427
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (6,428) (6,204)
Purchases of debt and equity securities (3,446) (2,275)
Proceeds from sales and maturities of debt and equity securities 3,535 2,319
Other (484) (407)
Net cash used in investing activities (6,264) (6,575)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from the issuance of long-term debt 4,848 6,372
Payments for the redemption of long-term debt (1,815) (2,731)
Other (2) (108)
Net cash provided by financing activities 1,245 1,274
Net increase in cash, cash equivalents and restricted cash 21 126
Cash, cash equivalents and restricted cash at beginning of period 421 357
Cash, cash equivalents and restricted cash at end of period 442 483
Significant non-cash transactions:    
Accrued capital expenditures 1,929 1,721
Progress Energy    
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income 1,153 956
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, amortization and accretion (including amortization of nuclear fuel) 1,675 1,330
Equity component of AFUDC (51) (36)
Gains on sales of other assets (12) (13)
Impairment of assets and other charges 0 9
Deferred income taxes 122 (61)
Payments for asset retirement obligations (101) (144)
(Increase) decrease in    
Receivables (176) (223)
Receivables from affiliated companies (76) 85
Inventory 7 (106)
Other current assets 51 494
Increase (decrease) in    
Accounts payable (624) (34)
Accounts payable to affiliated companies 198 24
Taxes accrued 109 169
Other current liabilities (128) 28
Other assets (60) (136)
Other liabilities 78 79
Net cash provided by operating activities 2,165 2,421
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (2,742) (2,623)
Purchases of debt and equity securities (1,638) (989)
Proceeds from sales and maturities of debt and equity securities 1,660 1,039
Notes receivable from affiliated companies (897) 0
Other (211) (192)
Net cash used in investing activities (3,828) (2,765)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from the issuance of long-term debt 2,860 844
Payments for the redemption of long-term debt (459) (407)
Notes payable to affiliated companies (1,062) (67)
Capital contribution from parent 300 0
Other (1) (1)
Net cash provided by financing activities 1,638 369
Net increase in cash, cash equivalents and restricted cash (25) 25
Cash, cash equivalents and restricted cash at beginning of period 160 135
Cash, cash equivalents and restricted cash at end of period 135 160
Significant non-cash transactions:    
Accrued capital expenditures $ 827 $ 729
v3.25.2
Condensed Consolidated Statements of Changes in Equity - Progress Energy - USD ($)
$ in Millions
Total
Additional Paid-in Capital
Retained Earnings
Progress Energy
Progress Energy
Additional Paid-in Capital
Progress Energy
Retained Earnings
Progress Energy
Net Gains (Losses) on Hedges
Progress Energy
Net Unrealized Gains (Losses) on Available-for-Sale Securities
Progress Energy
Pension and OPEB Adjustments
Beginning Balance at Dec. 31, 2023       $ 22,860 $ 11,830 $ 11,040 $ (1) $ (5) $ (4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Net income $ 2,072     956   956      
Other comprehensive income (loss)       0          
Other 1 $ 1 $ 1 19 19        
Ending Balance at Jun. 30, 2024       23,835 11,849 11,996 (1) (5) (4)
Beginning Balance at Mar. 31, 2024       23,295 11,830 11,475 (1) (5) (4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Net income 921     521   521      
Other comprehensive income (loss)       0          
Other 1   1 19 19        
Ending Balance at Jun. 30, 2024       23,835 11,849 11,996 (1) (5) (4)
Beginning Balance at Dec. 31, 2024 50,127     24,906 11,830 13,086 (1) (5) (4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Net income 2,411     1,153   1,153      
Other comprehensive income (loss)       (1)       (1)  
Equitization of certain intercompany balances with affiliates       55 57 (2)      
Capital contribution from parent       300 300        
Other (2) 1 3            
Ending Balance at Jun. 30, 2025 50,891     26,413 12,187 14,237 (1) (6) (4)
Beginning Balance at Mar. 31, 2025       25,750 12,130 13,630 (1) (5) (4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Net income 1,007     607   607      
Other comprehensive income (loss)       (1)       (1)  
Equitization of certain intercompany balances with affiliates       57 57        
Other   $ 1 $ (1)            
Ending Balance at Jun. 30, 2025 $ 50,891     $ 26,413 $ 12,187 $ 14,237 $ (1) $ (6) $ (4)
v3.25.2
Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Progress - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Operating Revenues $ 7,508 $ 7,172 $ 15,757 $ 14,843
Operating Expenses        
Operation, maintenance and other 1,655 1,320 3,154 2,699
Depreciation and amortization 1,583 1,409 3,095 2,796
Property and other taxes 415 393 843 779
Impairment of assets and other charges 3 43 3 44
Total operating expenses 5,692 5,471 11,604 11,191
Gain (Loss) on Sales of Other Assets and Other, net 14 6 20 18
Operating Income 1,830 1,707 4,173 3,670
Other Income and Expenses, net 194 188 337 374
Interest Expense 897 824 1,786 1,641
Income From Continuing Operations Before Income Taxes 1,127 1,071 2,724 2,403
Income Tax Expense 119 140 312 318
Comprehensive Income 993 893 2,338 2,146
Net Income 984 900 2,363 2,038
Duke Energy Progress        
Operating Revenues 1,681 1,636 3,699 3,424
Operating Expenses        
Cost of sales 574 597 1,299 1,217
Operation, maintenance and other 340 326 738 701
Depreciation and amortization 319 306 676 645
Property and other taxes 45 50 105 101
Impairment of assets and other charges 0 9 0 9
Total operating expenses 1,278 1,288 2,818 2,673
Gain (Loss) on Sales of Other Assets and Other, net 0 0 0 1
Operating Income 403 348 881 752
Other Income and Expenses, net 50 37 87 73
Interest Expense 139 123 267 243
Income From Continuing Operations Before Income Taxes 314 262 701 582
Income Tax Expense 39 39 95 87
Comprehensive Income 275 223 606 495
Net Income $ 275 $ 223 $ 606 $ 495
v3.25.2
Condensed Consolidated Balance Sheets - Duke Energy Progress - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Current Assets    
Cash and cash equivalents $ 344 $ 314
Receivables (net of allowance for doubtful accounts) 4,089 2,232
Receivables of VIEs (net of allowance for doubtful accounts) 11 1,889
Inventory 4,434 4,509
Regulatory assets 2,269 2,756
Other (includes amounts related to VIEs) 1,001 695
Total current assets 12,148 12,950
Property, Plant and Equipment    
Cost 186,261 180,806
Accumulated depreciation and amortization (59,613) (57,503)
Net property, plant and equipment 126,648 123,303
Other Noncurrent Assets    
Regulatory assets 14,172 14,254
Nuclear decommissioning trust funds 12,109 11,434
Operating lease right-of-use assets, net 1,209 1,148
Other 3,792 3,509
Total other noncurrent assets 50,917 50,090
Total Assets 189,713 186,343
Current Liabilities    
Accounts payable 4,373 5,479
Taxes accrued 837 851
Interest accrued 881 855
Current maturities of long-term debt 5,046 4,349
Asset retirement obligations 636 650
Regulatory liabilities 1,257 1,425
Other 1,887 2,084
Total current liabilities 18,408 19,357
Long-Term Debt (includes amounts related to VIEs) 78,914 76,340
Other Noncurrent Liabilities    
Deferred income taxes 11,990 11,424
Asset retirement obligations 9,316 9,342
Regulatory liabilities 15,047 14,694
Operating lease liabilities 1,020 957
Accrued pension and other post-retirement benefit costs 410 434
Investment tax credits 882 894
Other 1,696 1,556
Total other noncurrent liabilities 40,361 39,390
Commitments and Contingencies
Equity    
Total Liabilities and Equity 189,713 186,343
Duke Energy Progress    
Current Assets    
Cash and cash equivalents 24 24
Receivables (net of allowance for doubtful accounts) 934 160
Receivables of VIEs (net of allowance for doubtful accounts) 5 835
Inventory 1,323 1,341
Regulatory assets 614 626
Other (includes amounts related to VIEs) 159 104
Total current assets 4,039 3,100
Property, Plant and Equipment    
Cost 43,320 42,060
Accumulated depreciation and amortization (16,550) (15,930)
Net property, plant and equipment 26,770 26,130
Other Noncurrent Assets    
Regulatory assets 4,654 4,555
Nuclear decommissioning trust funds 4,922 4,636
Operating lease right-of-use assets, net 403 348
Other 770 724
Total other noncurrent assets 10,749 10,263
Total Assets 41,558 39,493
Current Liabilities    
Accounts payable 581 749
Taxes accrued 107 394
Interest accrued 156 122
Current maturities of long-term debt 582 983
Asset retirement obligations 222 230
Regulatory liabilities 272 348
Other 310 427
Total current liabilities 2,621 4,170
Long-Term Debt (includes amounts related to VIEs) 13,483 11,371
Other Noncurrent Liabilities    
Deferred income taxes 2,503 2,344
Asset retirement obligations 4,123 4,104
Regulatory liabilities 4,799 4,570
Operating lease liabilities 404 332
Accrued pension and other post-retirement benefit costs 137 141
Investment tax credits 142 144
Other 262 196
Total other noncurrent liabilities 12,370 11,831
Commitments and Contingencies
Equity    
Total equity 12,934 11,971
Total Liabilities and Equity 41,558 39,493
Duke Energy Progress | Affiliated Entity    
Current Assets    
Receivables (net of allowance for doubtful accounts) 31 10
Current Liabilities    
Accounts payable 391 306
Notes payable to affiliated companies 0 611
Long-Term Debt (includes amounts related to VIEs) 150 150
Duke Energy Progress | Affiliated Entity | Notes Receivable    
Current Assets    
Receivables (net of allowance for doubtful accounts) $ 949 $ 0
v3.25.2
Condensed Consolidated Balance Sheets - Duke Energy Progress (Parenthetical) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Allowance for doubtful accounts - receivables $ 199 $ 124
Regulatory assets 2,269 2,756
Current Assets: Other 1,001 695
Regulatory assets 14,172 14,254
Current maturities of long-term debt 5,046 4,349
Long-Term Debt 78,914 76,340
Other 1,696 1,556
Variable Interest Entity    
Allowance for doubtful accounts of VIEs - receivables   85
Regulatory assets 120 120
Current Assets: Other 81 90
Regulatory assets 1,651 1,705
Current maturities of long-term debt 110 1,012
Long-Term Debt 1,782 1,842
Other   27
Duke Energy Progress    
Allowance for doubtful accounts - receivables 42 10
Regulatory assets 614 626
Current Assets: Other 159 104
Regulatory assets 4,654 4,555
Current maturities of long-term debt 582 983
Long-Term Debt 13,483 11,371
Other 262 196
Duke Energy Progress | Variable Interest Entity    
Allowance for doubtful accounts of VIEs - receivables   34
Regulatory assets 47 47
Current Assets: Other 37 40
Regulatory assets 752 775
Current maturities of long-term debt 40 443
Long-Term Debt $ 789 809
Other   $ 11
v3.25.2
Condensed Consolidated Statements of Cash Flows - Duke Energy Progress - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income $ 2,411 $ 2,072
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, amortization and accretion (including amortization of nuclear fuel) 3,659 3,100
Equity component of AFUDC (147) (116)
Impairment of assets and other charges 3 44
Deferred income taxes 611 264
Payments for asset retirement obligations (241) (262)
(Increase) decrease in    
Receivables 53 (19)
Inventory 85 (86)
Other current assets (243) 502
Increase (decrease) in    
Accounts payable (987) (215)
Taxes accrued (7) (68)
Other current liabilities (374) (257)
Other assets (82) 331
Other liabilities 71 225
Net cash provided by operating activities 5,040 5,427
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (6,428) (6,204)
Purchases of debt and equity securities (3,446) (2,275)
Proceeds from sales and maturities of debt and equity securities 3,535 2,319
Other (484) (407)
Net cash used in investing activities (6,264) (6,575)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from the issuance of long-term debt 4,848 6,372
Payments for the redemption of long-term debt (1,815) (2,731)
Other (2) (108)
Net cash provided by financing activities 1,245 1,274
Net increase in cash, cash equivalents and restricted cash 21 126
Cash, cash equivalents and restricted cash at beginning of period 421 357
Cash, cash equivalents and restricted cash at end of period 442 483
Significant non-cash transactions:    
Accrued capital expenditures 1,929 1,721
Duke Energy Progress    
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income 606 495
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, amortization and accretion (including amortization of nuclear fuel) 773 738
Equity component of AFUDC (41) (27)
Impairment of assets and other charges 0 9
Deferred income taxes 132 (33)
Payments for asset retirement obligations (81) (102)
(Increase) decrease in    
Receivables 43 (99)
Receivables from affiliated companies (21) 12
Inventory 18 (76)
Other current assets (89) 185
Increase (decrease) in    
Accounts payable (60) (70)
Accounts payable to affiliated companies 142 (47)
Taxes accrued (287) (27)
Other current liabilities (41) 79
Other assets (49) (86)
Other liabilities 90 34
Net cash provided by operating activities 1,135 985
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (1,524) (1,373)
Purchases of debt and equity securities (1,527) (922)
Proceeds from sales and maturities of debt and equity securities 1,526 921
Notes receivable from affiliated companies (949) 0
Other (85) (54)
Net cash used in investing activities (2,559) (1,428)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from the issuance of long-term debt 2,156 667
Payments for the redemption of long-term debt (423) (41)
Notes payable to affiliated companies (611) (164)
Capital contribution from parent 300 0
Other (1) 0
Net cash provided by financing activities 1,421 462
Net increase in cash, cash equivalents and restricted cash (3) 19
Cash, cash equivalents and restricted cash at beginning of period 69 51
Cash, cash equivalents and restricted cash at end of period 66 70
Significant non-cash transactions:    
Accrued capital expenditures $ 306 $ 274
v3.25.2
Condensed Consolidated Statements of Changes in Equity - Duke Energy Progress - USD ($)
$ in Millions
Total
Duke Energy Progress
Duke Energy Progress
Member's Equity
Beginning balance at Dec. 31, 2023     $ 10,807
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Net income (loss) $ 2,038 $ 495 495
Other 1    
Ending balance at Jun. 30, 2024     11,302
Beginning balance at Mar. 31, 2024     11,079
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Net income (loss) 900 223 223
Other 1    
Ending balance at Jun. 30, 2024     11,302
Beginning balance at Dec. 31, 2024   11,971 11,971
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Net income (loss) 2,363 606 606
Equitization of certain intercompany balances with affiliates     57
Capital contribution from parent     300
Other (2)    
Ending balance at Jun. 30, 2025   12,934 12,934
Beginning balance at Mar. 31, 2025     12,601
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Net income (loss) $ 984 275 275
Equitization of certain intercompany balances with affiliates     57
Other     1
Ending balance at Jun. 30, 2025   $ 12,934 $ 12,934
v3.25.2
Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Florida - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Operating Revenues $ 7,508 $ 7,172 $ 15,757 $ 14,843
Operating Expenses        
Operation, maintenance and other 1,655 1,320 3,154 2,699
Depreciation and amortization 1,583 1,409 3,095 2,796
Property and other taxes 415 393 843 779
Total operating expenses 5,692 5,471 11,604 11,191
Gain (Loss) on Sales of Other Assets and Other, net 14 6 20 18
Operating Income 1,830 1,707 4,173 3,670
Other Income and Expenses, net 194 188 337 374
Interest Expense 897 824 1,786 1,641
Income From Continuing Operations Before Income Taxes 1,127 1,071 2,724 2,403
Income Tax Expense 119 140 312 318
Net Income 984 900 2,363 2,038
Comprehensive Income 993 893 2,338 2,146
Duke Energy Florida        
Operating Revenues 1,885 1,716 3,329 3,152
Operating Expenses        
Cost of sales 451 605 832 1,128
Operation, maintenance and other 500 256 786 507
Depreciation and amortization 290 262 564 510
Property and other taxes 130 117 242 223
Total operating expenses 1,371 1,240 2,424 2,368
Gain (Loss) on Sales of Other Assets and Other, net 0 0 1 1
Operating Income 514 476 906 785
Other Income and Expenses, net 27 22 45 46
Interest Expense 116 114 234 225
Income From Continuing Operations Before Income Taxes 425 384 717 606
Income Tax Expense 81 75 139 118
Net Income 344 309 578 488
Unrealized losses on available-for-sale securities (1) 0 (1) 0
Comprehensive Income $ 343 $ 309 $ 577 $ 488
v3.25.2
Condensed Consolidated Balance Sheets - Duke Energy Florida - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Current Assets    
Cash and cash equivalents $ 344 $ 314
Receivables (net of allowance for doubtful accounts) 4,089 2,232
Receivables of VIEs (net of allowance for doubtful accounts) 11 1,889
Inventory 4,434 4,509
Regulatory assets 2,269 2,756
Other (includes amounts related to VIEs) 1,001 695
Total current assets 12,148 12,950
Property, Plant and Equipment    
Cost 186,261 180,806
Accumulated depreciation and amortization (59,613) (57,503)
Net property, plant and equipment 126,648 123,303
Other Noncurrent Assets    
Regulatory assets 14,172 14,254
Nuclear decommissioning trust funds 12,109 11,434
Operating lease right-of-use assets, net 1,209 1,148
Other 3,792 3,509
Total other noncurrent assets 50,917 50,090
Total Assets 189,713 186,343
Current Liabilities    
Accounts payable 4,373 5,479
Taxes accrued 837 851
Interest accrued 881 855
Current maturities of long-term debt 5,046 4,349
Asset retirement obligations 636 650
Regulatory liabilities 1,257 1,425
Other 1,887 2,084
Total current liabilities 18,408 19,357
Long-Term Debt (includes amounts related to VIEs) 78,914 76,340
Other Noncurrent Liabilities    
Deferred income taxes 11,990 11,424
Asset retirement obligations 9,316 9,342
Regulatory liabilities 15,047 14,694
Operating lease liabilities 1,020 957
Accrued pension and other post-retirement benefit costs 410 434
Investment tax credits 882 894
Other 1,696 1,556
Total other noncurrent liabilities 40,361 39,390
Commitments and Contingencies
Equity    
Accumulated other comprehensive income 203 228
Total Liabilities and Equity 189,713 186,343
Duke Energy Florida    
Current Assets    
Cash and cash equivalents 16 33
Receivables (net of allowance for doubtful accounts) 801 544
Receivables of VIEs (net of allowance for doubtful accounts) 4 0
Inventory 767 745
Regulatory assets 562 1,022
Other (includes amounts related to VIEs) 85 227
Total current assets 2,307 2,592
Property, Plant and Equipment    
Cost 31,665 30,490
Accumulated depreciation and amortization (8,034) (7,650)
Net property, plant and equipment 23,631 22,840
Other Noncurrent Assets    
Regulatory assets 2,105 2,064
Nuclear decommissioning trust funds 308 331
Operating lease right-of-use assets, net 250 277
Other 491 465
Total other noncurrent assets 3,154 3,137
Total Assets 29,092 28,569
Current Liabilities    
Accounts payable 977 1,418
Taxes accrued 339 60
Interest accrued 86 86
Current maturities of long-term debt 1,235 534
Asset retirement obligations 1 1
Regulatory liabilities 83 174
Other 352 342
Total current liabilities 3,203 3,148
Long-Term Debt (includes amounts related to VIEs) 9,785 9,814
Other Noncurrent Liabilities    
Deferred income taxes 3,010 3,024
Asset retirement obligations 196 213
Regulatory liabilities 660 688
Operating lease liabilities 197 225
Accrued pension and other post-retirement benefit costs 88 92
Investment tax credits 241 241
Other 156 143
Total other noncurrent liabilities 4,548 4,626
Commitments and Contingencies
Equity    
Member's equity 11,562 10,986
Accumulated other comprehensive income (6) (5)
Total equity 11,556 10,981
Total Liabilities and Equity 29,092 28,569
Duke Energy Florida | Affiliated Entity    
Current Assets    
Receivables (net of allowance for doubtful accounts) 72 21
Current Liabilities    
Accounts payable 63 67
Notes payable to affiliated companies $ 67 $ 466
v3.25.2
Condensed Consolidated Balance Sheets - Duke Energy Florida (Parenthetical) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Allowance for doubtful accounts - receivables $ 199 $ 124
Inventory 4,434 4,509
Regulatory assets 2,269 2,756
Current Assets: Other 1,001 695
Regulatory assets 14,172 14,254
Accounts payable 4,373 5,479
Current maturities of long-term debt 5,046 4,349
Long-Term Debt 78,914 76,340
Variable Interest Entity    
Inventory 548 494
Regulatory assets 120 120
Current Assets: Other 81 90
Regulatory assets 1,651 1,705
Accounts payable 247 214
Current maturities of long-term debt 110 1,012
Long-Term Debt 1,782 1,842
Duke Energy Florida    
Allowance for doubtful accounts - receivables 28 29
Inventory 767 745
Regulatory assets 562 1,022
Current Assets: Other 85 227
Regulatory assets 2,105 2,064
Accounts payable 977 1,418
Current maturities of long-term debt 1,235 534
Long-Term Debt 9,785 9,814
Duke Energy Florida | Variable Interest Entity    
Inventory 548 494
Regulatory assets 61 61
Current Assets: Other 28 35
Regulatory assets 715 741
Accounts payable 241 208
Current maturities of long-term debt 60 59
Long-Term Debt $ 741 $ 773
v3.25.2
Condensed Consolidated Statements of Cash Flows - Duke Energy Florida - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income $ 2,411 $ 2,072
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, amortization and accretion (including amortization of nuclear fuel) 3,659 3,100
Equity component of AFUDC (147) (116)
Deferred income taxes 611 264
Payments for asset retirement obligations (241) (262)
(Increase) decrease in    
Receivables 53 (19)
Inventory 85 (86)
Other current assets (243) 502
Increase (decrease) in    
Accounts payable (987) (215)
Taxes accrued (7) (68)
Other current liabilities (374) (257)
Other assets (82) 331
Other liabilities 71 225
Net cash provided by operating activities 5,040 5,427
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (6,428) (6,204)
Purchases of debt and equity securities (3,446) (2,275)
Proceeds from sales and maturities of debt and equity securities 3,535 2,319
Other (484) (407)
Net cash used in investing activities (6,264) (6,575)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from the issuance of long-term debt 4,848 6,372
Payments for the redemption of long-term debt (1,815) (2,731)
Other (2) (108)
Net cash provided by financing activities 1,245 1,274
Net increase in cash, cash equivalents and restricted cash 21 126
Cash, cash equivalents and restricted cash at beginning of period 421 357
Cash, cash equivalents and restricted cash at end of period 442 483
Significant non-cash transactions:    
Accrued capital expenditures 1,929 1,721
Duke Energy Florida    
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income 578 488
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, amortization and accretion (including amortization of nuclear fuel) 902 592
Equity component of AFUDC (11) (8)
Deferred income taxes (26) (37)
Payments for asset retirement obligations (19) (42)
(Increase) decrease in    
Receivables (220) (125)
Receivables from affiliated companies (51) 234
Inventory (12) (30)
Other current assets 277 298
Increase (decrease) in    
Accounts payable (563) 36
Accounts payable to affiliated companies (4) (22)
Taxes accrued 288 99
Other current liabilities (86) (49)
Other assets (22) (44)
Other liabilities (3) 47
Net cash provided by operating activities 1,028 1,437
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (1,218) (1,251)
Purchases of debt and equity securities (111) (67)
Proceeds from sales and maturities of debt and equity securities 134 117
Other (126) (138)
Net cash used in investing activities (1,321) (1,339)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from the issuance of long-term debt 704 177
Payments for the redemption of long-term debt (35) (365)
Notes payable to affiliated companies (399) 97
Other (1) (1)
Net cash provided by financing activities 269 (92)
Net increase in cash, cash equivalents and restricted cash (24) 6
Cash, cash equivalents and restricted cash at beginning of period 75 67
Cash, cash equivalents and restricted cash at end of period 51 73
Significant non-cash transactions:    
Accrued capital expenditures $ 521 $ 455
v3.25.2
Condensed Consolidated Statements of Changes in Equity - Duke Energy Florida - USD ($)
$ in Millions
Total
Duke Energy Florida
Duke Energy Florida
Member's Equity
Duke Energy Florida
Net Unrealized Gains (Losses) on Available-for-Sale Securities
Beginning balance at Dec. 31, 2023   $ 10,043 $ 10,048 $ (5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) $ 2,038 488 488  
Other comprehensive income (loss)   0    
Other 1 19 19  
Ending balance at Jun. 30, 2024   10,550 10,555 (5)
Beginning balance at Mar. 31, 2024   10,222 10,227 (5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) 900 309 309  
Other comprehensive income (loss)   0    
Other 1 19 19  
Ending balance at Jun. 30, 2024   10,550 10,555 (5)
Beginning balance at Dec. 31, 2024   10,981 10,986 (5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) 2,363 578 578  
Other comprehensive income (loss)   (1)   (1)
Other (2) (2) (2)  
Ending balance at Jun. 30, 2025   11,556 11,562 (6)
Beginning balance at Mar. 31, 2025   11,213 11,218 (5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) $ 984 344 344  
Other comprehensive income (loss)   (1)   (1)
Ending balance at Jun. 30, 2025   $ 11,556 $ 11,562 $ (6)
v3.25.2
Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Ohio - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Regulated electric $ 6,968 $ 6,746 $ 14,032 $ 13,478
Regulated natural gas 462 347 1,567 1,213
Total operating revenues 7,508 7,172 15,757 14,843
Operating Expenses        
Operation, maintenance and other 1,655 1,320 3,154 2,699
Depreciation and amortization 1,583 1,409 3,095 2,796
Property and other taxes 415 393 843 779
Total operating expenses 5,692 5,471 11,604 11,191
Operating Income 1,830 1,707 4,173 3,670
Other Income and Expenses, net 194 188 337 374
Interest Expense 897 824 1,786 1,641
Income From Continuing Operations Before Income Taxes 1,127 1,071 2,724 2,403
Income Tax Expense From Continuing Operations 119 140 312 318
Net Income 984 900 2,363 2,038
Comprehensive Income 993 893 2,338 2,146
Fuel used in electric generation and purchased power        
Operating Expenses        
Cost of sales 1,878 2,228 3,977 4,563
Cost of natural gas        
Operating Expenses        
Cost of sales 158 78 532 310
Duke Energy Ohio        
Regulated electric 498 476 985 934
Regulated natural gas 156 132 435 352
Total operating revenues 654 608 1,420 1,286
Operating Expenses        
Operation, maintenance and other 115 121 239 247
Depreciation and amortization 121 96 233 195
Property and other taxes 101 102 217 204
Total operating expenses 533 472 1,135 998
Operating Income 121 136 285 288
Other Income and Expenses, net 6 4 11 10
Interest Expense 51 47 98 92
Income From Continuing Operations Before Income Taxes 76 93 198 206
Income Tax Expense From Continuing Operations 12 16 34 35
Net Income 64 77 164 171
Comprehensive Income 64 77 164 171
Duke Energy Ohio | Fuel used in electric generation and purchased power        
Operating Expenses        
Cost of sales 161 132 310 270
Duke Energy Ohio | Cost of natural gas        
Operating Expenses        
Cost of sales $ 35 $ 21 $ 136 $ 82
v3.25.2
Condensed Consolidated Balance Sheets - Duke Energy Ohio - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Current Assets    
Cash and cash equivalents $ 344 $ 314
Receivables (net of allowance for doubtful accounts) 4,089 2,232
Inventory 4,434 4,509
Regulatory assets 2,269 2,756
Other (includes amounts related to VIEs) 1,001 695
Total current assets 12,148 12,950
Property, Plant and Equipment    
Cost 186,261 180,806
Accumulated depreciation and amortization (59,613) (57,503)
Net property, plant and equipment 126,648 123,303
Other Noncurrent Assets    
Goodwill 19,303 19,303
Regulatory assets 14,172 14,254
Operating lease right-of-use assets, net 1,209 1,148
Other 3,792 3,509
Total other noncurrent assets 50,917 50,090
Total Assets 189,713 186,343
Current Liabilities    
Accounts payable 4,373 5,479
Taxes accrued 837 851
Interest accrued 881 855
Current maturities of long-term debt 5,046 4,349
Asset retirement obligations 636 650
Regulatory liabilities 1,257 1,425
Other 1,887 2,084
Total current liabilities 18,408 19,357
Long-Term Debt (includes amounts related to VIEs) 78,914 76,340
Other Noncurrent Liabilities    
Deferred income taxes 11,990 11,424
Asset retirement obligations 9,316 9,342
Regulatory liabilities 15,047 14,694
Operating lease liabilities 1,020 957
Accrued pension and other post-retirement benefit costs 410 434
Other 1,696 1,556
Total other noncurrent liabilities 40,361 39,390
Commitments and Contingencies
Equity    
Common stock 1 1
Additional paid-in capital 45,573 45,494
Retained earnings 4,141 3,431
Total Duke Energy Corporation stockholders' equity 50,891 50,127
Total Liabilities and Equity 189,713 186,343
Duke Energy Ohio    
Current Assets    
Cash and cash equivalents 10 24
Inventory 181 183
Regulatory assets 66 88
Other (includes amounts related to VIEs) 29 30
Total current assets 749 811
Property, Plant and Equipment    
Cost 14,226 13,918
Accumulated depreciation and amortization (3,692) (3,674)
Net property, plant and equipment 10,534 10,244
Other Noncurrent Assets    
Goodwill 920 920
Regulatory assets 699 705
Operating lease right-of-use assets, net 6 6
Other 88 82
Total other noncurrent assets 1,713 1,713
Total Assets 12,996 12,768
Current Liabilities    
Taxes accrued 250 363
Interest accrued 50 49
Current maturities of long-term debt 140 245
Asset retirement obligations 7 8
Regulatory liabilities 53 34
Other 70 67
Total current liabilities 1,040 1,293
Long-Term Debt (includes amounts related to VIEs) 4,199 3,895
Other Noncurrent Liabilities    
Deferred income taxes 1,320 1,314
Asset retirement obligations 132 131
Regulatory liabilities 467 465
Operating lease liabilities 6 6
Accrued pension and other post-retirement benefit costs 92 89
Other 91 91
Total other noncurrent liabilities 2,108 2,096
Commitments and Contingencies
Equity    
Common stock 762 762
Additional paid-in capital 3,119 3,118
Retained earnings 1,743 1,579
Total Duke Energy Corporation stockholders' equity 5,624 5,459
Total Liabilities and Equity 12,996 12,768
Duke Energy Ohio | Nonrelated Party    
Current Assets    
Receivables (net of allowance for doubtful accounts) 442 447
Current Liabilities    
Accounts payable 271 313
Duke Energy Ohio | Affiliated Entity    
Current Assets    
Receivables (net of allowance for doubtful accounts) 10 11
Notes receivable from affiliated companies 11 28
Current Liabilities    
Accounts payable 70 52
Notes payable to affiliated companies 129 162
Long-Term Debt (includes amounts related to VIEs) $ 25 $ 25
v3.25.2
Condensed Consolidated Balance Sheets - Duke Energy Ohio (Parenthetical) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Allowance for doubtful accounts - receivables $ 199 $ 124
Common stock, par value (in usd per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 2,000,000,000 2,000,000,000
Common stock, shares outstanding (in shares) 778,000,000 776,000,000
Duke Energy Ohio    
Allowance for doubtful accounts - receivables $ 41 $ 43
Common stock, par value (in usd per share) $ 8.50 $ 8.50
Common stock, shares authorized (in shares) 120,000,000 120,000,000
Common stock, shares outstanding (in shares) 90,000,000 90,000,000
v3.25.2
Condensed Consolidated Statements of Cash Flows - Duke Energy Ohio - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income $ 2,411 $ 2,072
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, amortization and accretion (including amortization of nuclear fuel) 3,659 3,100
Equity component of AFUDC (147) (116)
Deferred income taxes 611 264
Payments for asset retirement obligations (241) (262)
(Increase) decrease in    
Receivables 53 (19)
Inventory 85 (86)
Other current assets (243) 502
Increase (decrease) in    
Accounts payable (987) (215)
Taxes accrued (7) (68)
Other current liabilities (374) (257)
Other assets (82) 331
Other liabilities 71 225
Net cash provided by operating activities 5,040 5,427
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (6,428) (6,204)
Other (484) (407)
Net cash used in investing activities (6,264) (6,575)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from the issuance of long-term debt 4,848 6,372
Payments for the redemption of long-term debt (1,815) (2,731)
Other (2) (108)
Net cash provided by financing activities 1,245 1,274
Net increase in cash, cash equivalents and restricted cash 21 126
Cash, cash equivalents and restricted cash at beginning of period 421 357
Cash, cash equivalents and restricted cash at end of period 442 483
Significant non-cash transactions:    
Accrued capital expenditures 1,929 1,721
Duke Energy Ohio    
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income 164 171
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, amortization and accretion (including amortization of nuclear fuel) 235 197
Equity component of AFUDC (7) (2)
Deferred income taxes (10) 17
Payments for asset retirement obligations (3) (3)
(Increase) decrease in    
Receivables 5 31
Receivables from affiliated companies 1 58
Inventory 2 (11)
Other current assets 44 82
Increase (decrease) in    
Accounts payable (24) (21)
Accounts payable to affiliated companies 18 (16)
Taxes accrued (113) (111)
Other current liabilities 22 (6)
Other assets (28) 34
Other liabilities 15 (38)
Net cash provided by operating activities 321 382
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (471) (417)
Notes receivable from affiliated companies 17 (319)
Other (45) (19)
Net cash used in investing activities (499) (755)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from the issuance of long-term debt 347 648
Payments for the redemption of long-term debt (150) 0
Notes payable to affiliated companies (32) (284)
Other (1) (4)
Net cash provided by financing activities 164 360
Net increase in cash, cash equivalents and restricted cash (14) (13)
Cash, cash equivalents and restricted cash at beginning of period 24 24
Cash, cash equivalents and restricted cash at end of period 10 11
Significant non-cash transactions:    
Accrued capital expenditures $ 92 $ 93
v3.25.2
Condensed Consolidated Statements of Changes in Equity - Duke Energy Ohio - USD ($)
$ in Millions
Total
Additional Paid-in Capital
Retained Earnings
Duke Energy Ohio
Duke Energy Ohio
Common Stock
Duke Energy Ohio
Additional Paid-in Capital
Duke Energy Ohio
Retained Earnings
Beginning Balance at Dec. 31, 2023       $ 5,100 $ 762 $ 3,100 $ 1,238
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income (loss) $ 2,038     171     171
Other 1 $ 1 $ 1 19   19  
Ending Balance at Jun. 30, 2024       5,290 762 3,119 1,409
Beginning Balance at Mar. 31, 2024       5,194 762 3,100 1,332
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income (loss) 900     77     77
Other 1   1 19   19  
Ending Balance at Jun. 30, 2024       5,290 762 3,119 1,409
Beginning Balance at Dec. 31, 2024 50,127     5,459 762 3,118 1,579
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income (loss) 2,363     164     164
Other (2) 1 3 1   1  
Ending Balance at Jun. 30, 2025 50,891     5,624 762 3,119 1,743
Beginning Balance at Mar. 31, 2025       5,560 762 3,119 1,679
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income (loss) 984     64     64
Other   $ 1 $ (1)        
Ending Balance at Jun. 30, 2025 $ 50,891     $ 5,624 $ 762 $ 3,119 $ 1,743
v3.25.2
Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Indiana - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Operating Revenues $ 7,508 $ 7,172 $ 15,757 $ 14,843
Operating Expenses        
Operation, maintenance and other 1,655 1,320 3,154 2,699
Depreciation and amortization 1,583 1,409 3,095 2,796
Property and other taxes 415 393 843 779
Total operating expenses 5,692 5,471 11,604 11,191
Operating Income 1,830 1,707 4,173 3,670
Other Income and Expenses, net 194 188 337 374
Interest Expense 897 824 1,786 1,641
Income From Continuing Operations Before Income Taxes 1,127 1,071 2,724 2,403
Income Tax Expense From Continuing Operations 119 140 312 318
Net Income 984 900 2,363 2,038
Comprehensive Income 993 893 2,338 2,146
Duke Energy Indiana        
Operating Revenues 821 747 1,679 1,506
Operating Expenses        
Cost of sales 219 223 479 494
Operation, maintenance and other 192 161 387 341
Depreciation and amortization 222 172 414 341
Property and other taxes 17 16 35 30
Total operating expenses 650 572 1,315 1,206
Operating Income 171 175 364 300
Other Income and Expenses, net 21 15 31 28
Interest Expense 57 58 116 115
Income From Continuing Operations Before Income Taxes 135 132 279 213
Income Tax Expense From Continuing Operations 18 22 36 36
Net Income 117 110 243 177
Pension and OPEB adjustments 0 0 0 (1)
Comprehensive Income $ 117 $ 110 $ 243 $ 176
v3.25.2
Condensed Consolidated Balance Sheets - Duke Energy Indiana - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Current Assets    
Cash and cash equivalents $ 344 $ 314
Receivables (net of allowance for doubtful accounts) 4,089 2,232
Inventory 4,434 4,509
Regulatory assets 2,269 2,756
Total current assets 12,148 12,950
Property, Plant and Equipment    
Cost 186,261 180,806
Accumulated depreciation and amortization (59,613) (57,503)
Net property, plant and equipment 126,648 123,303
Other Noncurrent Assets    
Regulatory assets 14,172 14,254
Operating lease right-of-use assets, net 1,209 1,148
Other 3,792 3,509
Total other noncurrent assets 50,917 50,090
Total Assets 189,713 186,343
Current Liabilities    
Accounts payable 4,373 5,479
Taxes accrued 837 851
Interest accrued 881 855
Current maturities of long-term debt 5,046 4,349
Asset retirement obligations 636 650
Regulatory liabilities 1,257 1,425
Other 1,887 2,084
Total current liabilities 18,408 19,357
Long-Term Debt (includes amounts related to VIEs) 78,914 76,340
Other Noncurrent Liabilities    
Deferred income taxes 11,990 11,424
Asset retirement obligations 9,316 9,342
Regulatory liabilities 15,047 14,694
Operating lease liabilities 1,020 957
Accrued pension and other post-retirement benefit costs 410 434
Investment tax credits 882 894
Other 1,696 1,556
Total other noncurrent liabilities 40,361 39,390
Commitments and Contingencies
Equity    
Total Liabilities and Equity 189,713 186,343
Duke Energy Indiana    
Current Assets    
Cash and cash equivalents 9 13
Notes receivable from affiliated companies 235 0
Inventory 550 586
Regulatory assets 176 113
Other 84 69
Total current assets 1,517 1,205
Property, Plant and Equipment    
Cost 20,492 19,970
Accumulated depreciation and amortization (7,174) (6,848)
Net property, plant and equipment 13,318 13,122
Other Noncurrent Assets    
Regulatory assets 1,050 1,040
Operating lease right-of-use assets, net 35 37
Other 260 323
Total other noncurrent assets 1,345 1,400
Total Assets 16,180 15,727
Current Liabilities    
Taxes accrued 82 168
Interest accrued 63 59
Current maturities of long-term debt 4 4
Asset retirement obligations 148 164
Regulatory liabilities 270 183
Other 210 183
Total current liabilities 1,209 1,085
Long-Term Debt (includes amounts related to VIEs) 4,941 4,644
Other Noncurrent Liabilities    
Deferred income taxes 1,503 1,494
Asset retirement obligations 1,105 1,104
Regulatory liabilities 1,254 1,404
Operating lease liabilities 31 33
Accrued pension and other post-retirement benefit costs 82 82
Investment tax credits 185 186
Other 21 19
Total other noncurrent liabilities 4,181 4,322
Commitments and Contingencies
Equity    
Member's equity 5,699 5,526
Total equity 5,699 5,526
Total Liabilities and Equity 16,180 15,727
Duke Energy Indiana | Nonrelated Party    
Current Assets    
Receivables (net of allowance for doubtful accounts) 463 423
Current Liabilities    
Accounts payable 365 257
Duke Energy Indiana | Affiliated Entity    
Current Assets    
Receivables (net of allowance for doubtful accounts) 0 1
Current Liabilities    
Accounts payable 67 57
Notes payable to affiliated companies 0 10
Long-Term Debt (includes amounts related to VIEs) $ 150 $ 150
v3.25.2
Condensed Consolidated Balance Sheets - Duke Energy Indiana (Parenthetical) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Allowance for doubtful accounts - receivables $ 199 $ 124
Duke Energy Indiana    
Allowance for doubtful accounts - receivables $ 17 $ 15
v3.25.2
Condensed Consolidated Statements of Cash Flows - Duke Energy Indiana - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income $ 2,411 $ 2,072
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, amortization and accretion (including amortization of nuclear fuel) 3,659 3,100
Equity component of AFUDC (147) (116)
Deferred income taxes 611 264
Payments for asset retirement obligations (241) (262)
(Increase) decrease in    
Receivables 53 (19)
Inventory 85 (86)
Other current assets (243) 502
Increase (decrease) in    
Accounts payable (987) (215)
Taxes accrued (7) (68)
Other current liabilities (374) (257)
Other assets (82) 331
Other liabilities 71 225
Net cash provided by operating activities 5,040 5,427
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (6,428) (6,204)
Purchases of debt and equity securities (3,446) (2,275)
Proceeds from sales and maturities of debt and equity securities 3,535 2,319
Other (484) (407)
Net cash used in investing activities (6,264) (6,575)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from the issuance of long-term debt 4,848 6,372
Other (2) (108)
Net cash provided by financing activities 1,245 1,274
Net increase in cash, cash equivalents and restricted cash 21 126
Cash, cash equivalents and restricted cash at beginning of period 421 357
Cash, cash equivalents and restricted cash at end of period 442 483
Significant non-cash transactions:    
Accrued capital expenditures 1,929 1,721
Duke Energy Indiana    
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income 243 177
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, amortization and accretion (including amortization of nuclear fuel) 416 343
Equity component of AFUDC (15) (7)
Deferred income taxes (31) 22
Payments for asset retirement obligations (42) (34)
(Increase) decrease in    
Receivables (45) 29
Receivables from affiliated companies 1 (5)
Inventory 36 (5)
Other current assets (81) 38
Increase (decrease) in    
Accounts payable 65 (10)
Accounts payable to affiliated companies 10 (59)
Taxes accrued (86) 20
Other current liabilities 53 (13)
Other assets 78 (44)
Other liabilities (17) (4)
Net cash provided by operating activities 585 448
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (526) (489)
Purchases of debt and equity securities (49) (22)
Proceeds from sales and maturities of debt and equity securities 121 18
Notes receivable from affiliated companies (235) (160)
Other (116) (4)
Net cash used in investing activities (805) (657)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from the issuance of long-term debt 297 298
Notes payable to affiliated companies (10) (256)
Capital contribution from parent 0 235
Distributions to parent (70) (62)
Other (1) (1)
Net cash provided by financing activities 216 214
Net increase in cash, cash equivalents and restricted cash (4) 5
Cash, cash equivalents and restricted cash at beginning of period 13 8
Cash, cash equivalents and restricted cash at end of period 9 13
Significant non-cash transactions:    
Accrued capital expenditures $ 170 $ 108
v3.25.2
Condensed Consolidated Statements of Changes in Equity - Duke Energy Indiana - USD ($)
$ in Millions
Total
Duke Energy Indiana
Duke Energy Indiana
Member's Equity
Duke Energy Indiana
Pension and OPEB Adjustments
Beginning balance at Dec. 31, 2023   $ 5,013 $ 5,012 $ 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) $ 2,038 177 177  
Contribution from parent   235 235  
Distributions to parent (1,586) (20) (20)  
Other 1 (4) (3) (1)
Ending balance at Jun. 30, 2024   5,401 5,401 0
Beginning balance at Mar. 31, 2024   5,078 5,078  
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) 900 110 110  
Contribution from parent   235 235  
Distributions to parent (794) (20) (20)  
Other 1 (2) (2)  
Ending balance at Jun. 30, 2024   5,401 5,401 0
Beginning balance at Dec. 31, 2024   5,526 5,526 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) 2,363 243 243  
Distributions to parent (1,629) (70) (70)  
Other (2)      
Ending balance at Jun. 30, 2025   5,699 5,699 0
Beginning balance at Mar. 31, 2025   5,619 5,619  
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net income (loss) 984 117 117  
Distributions to parent $ (815) (37) (37)  
Ending balance at Jun. 30, 2025   $ 5,699 $ 5,699 $ 0
v3.25.2
Condensed Consolidated Statements of Operations and Comprehensive Income - Piedmont - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Regulated natural gas $ 462 $ 347 $ 1,567 $ 1,213
Nonregulated electric and other 78 79 158 152
Total operating revenues 7,508 7,172 15,757 14,843
Operating Expenses        
Operation, maintenance and other 1,655 1,320 3,154 2,699
Depreciation and amortization 1,583 1,409 3,095 2,796
Property and other taxes 415 393 843 779
Total operating expenses 5,692 5,471 11,604 11,191
Operating Income 1,830 1,707 4,173 3,670
Other Income and Expenses        
Equity in earnings of unconsolidated affiliates 11 21 22 38
Other income and expenses, net 183 167 315 336
Total other income and expenses 194 188 337 374
Interest Expense 897 824 1,786 1,641
Income From Continuing Operations Before Income Taxes 1,127 1,071 2,724 2,403
Income Tax Expense From Continuing Operations 119 140 312 318
Net Income 984 900 2,363 2,038
Comprehensive Income 1,016 914 2,386 2,180
Piedmont        
Regulated natural gas 328 237 1,178 906
Nonregulated electric and other 7 7 14 14
Total operating revenues 335 244 1,192 920
Operating Expenses        
Cost of natural gas 124 58 396 228
Operation, maintenance and other 103 85 199 180
Depreciation and amortization 71 64 141 126
Property and other taxes 19 16 37 31
Total operating expenses 317 223 773 565
Operating Income 18 21 419 355
Other Income and Expenses        
Equity in earnings of unconsolidated affiliates 1 2 3 4
Other income and expenses, net 11 15 22 30
Total other income and expenses 12 17 25 34
Interest Expense 48 43 95 88
Income From Continuing Operations Before Income Taxes (18) (5) 349 301
Income Tax Expense From Continuing Operations (8) (1) 68 59
Net Income (10) (4) 281 242
Comprehensive Income $ (10) $ (4) $ 281 $ 242
v3.25.2
Condensed Consolidated Balance Sheets - Piedmont - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Current Assets    
Cash and cash equivalents $ 344 $ 314
Receivables (net of allowance for doubtful accounts) 4,089 2,232
Inventory 4,434 4,509
Regulatory assets 2,269 2,756
Other (includes amounts related to VIEs) 1,001 695
Total current assets 12,148 12,950
Property, Plant and Equipment    
Cost 186,261 180,806
Accumulated depreciation and amortization (59,613) (57,503)
Net property, plant and equipment 126,648 123,303
Other Noncurrent Assets    
Goodwill 19,303 19,303
Regulatory assets 14,172 14,254
Operating lease right-of-use assets, net 1,209 1,148
Investments in equity method unconsolidated affiliates 332 353
Other 3,792 3,509
Total other noncurrent assets 50,917 50,090
Total Assets 189,713 186,343
Current Liabilities    
Accounts payable 4,373 5,479
Taxes accrued 837 851
Interest accrued 881 855
Current maturities of long-term debt 5,046 4,349
Regulatory liabilities 1,257 1,425
Other 1,887 2,084
Total current liabilities 18,408 19,357
Long-Term Debt (includes amounts related to VIEs) 78,914 76,340
Other Noncurrent Liabilities    
Deferred income taxes 11,990 11,424
Asset retirement obligations 9,316 9,342
Regulatory liabilities 15,047 14,694
Operating lease liabilities 1,020 957
Accrued pension and other post-retirement benefit costs 410 434
Other 1,696 1,556
Total other noncurrent liabilities 40,361 39,390
Commitments and Contingencies
Equity    
Common stock 1 1
Retained earnings 4,141 3,431
Total Duke Energy Corporation stockholders' equity 50,891 50,127
Noncontrolling interests 1,139 1,129
Total equity 52,030 51,256
Total Liabilities and Equity 189,713 186,343
Piedmont    
Current Assets    
Cash and cash equivalents 2 2
Inventory 51 78
Regulatory assets 131 158
Other (includes amounts related to VIEs) 78 11
Total current assets 468 633
Property, Plant and Equipment    
Cost 13,129 12,780
Accumulated depreciation and amortization (2,512) (2,432)
Net property, plant and equipment 10,617 10,348
Other Noncurrent Assets    
Goodwill 49 49
Regulatory assets 446 421
Operating lease right-of-use assets, net 3 4
Investments in equity method unconsolidated affiliates 75 76
Other 273 268
Total other noncurrent assets 846 818
Total Assets 11,931 11,799
Current Liabilities    
Accounts payable 195 237
Taxes accrued 43 84
Interest accrued 45 45
Current maturities of long-term debt 205 205
Regulatory liabilities 7 68
Other 80 76
Total current liabilities 1,305 1,480
Long-Term Debt (includes amounts related to VIEs) 3,799 3,798
Other Noncurrent Liabilities    
Deferred income taxes 1,048 1,018
Asset retirement obligations 29 29
Regulatory liabilities 959 956
Operating lease liabilities 2 7
Accrued pension and other post-retirement benefit costs 6 7
Other 147 150
Total other noncurrent liabilities 2,191 2,167
Commitments and Contingencies
Equity    
Common stock 1,635 1,635
Retained earnings 3,000 2,718
Total Duke Energy Corporation stockholders' equity 4,635 4,353
Noncontrolling interests 1 1
Total equity 4,636 4,354
Total Liabilities and Equity 11,931 11,799
Piedmont | Nonrelated Party    
Current Assets    
Receivables (net of allowance for doubtful accounts) 195 368
Piedmont | Affiliated Entity    
Current Assets    
Receivables (net of allowance for doubtful accounts) 11 16
Current Liabilities    
Accounts payable 48 26
Notes payable to affiliated companies $ 682 $ 739
v3.25.2
Condensed Consolidated Balance Sheets - Piedmont (Parenthetical) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Allowance for doubtful accounts - receivables $ 199 $ 124
Common stock, shares authorized (in shares) 2,000,000,000 2,000,000,000
Common stock, shares outstanding (in shares) 778,000,000 776,000,000
Piedmont    
Allowance for doubtful accounts - receivables $ 14 $ 10
Common stock, shares authorized (in shares) 100 100
Common stock, shares outstanding (in shares) 100 100
v3.25.2
Condensed Consolidated Statements of Cash Flows - Duke Energy Piedmont - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income $ 2,411 $ 2,072
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, amortization and accretion (including amortization of nuclear fuel) 3,659 3,100
Equity component of AFUDC (147) (116)
Deferred income taxes 611 264
Equity in earnings of unconsolidated affiliates (22) (38)
(Increase) decrease in    
Receivables 53 (19)
Inventory 85 (86)
Other current assets (243) 502
Increase (decrease) in    
Accounts payable (987) (215)
Taxes accrued (7) (68)
Other current liabilities (374) (257)
Other assets (82) 331
Other liabilities 71 225
Net cash provided by operating activities 5,040 5,427
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (6,428) (6,204)
Other (484) (407)
Net cash used in investing activities (6,264) (6,575)
CASH FLOWS FROM FINANCING ACTIVITIES    
Other (2) (108)
Net cash provided by financing activities 1,245 1,274
Net increase in cash, cash equivalents and restricted cash 21 126
Cash, cash equivalents and restricted cash at beginning of period 421 357
Cash, cash equivalents and restricted cash at end of period 442 483
Significant non-cash transactions:    
Accrued capital expenditures 1,929 1,721
Piedmont    
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income 281 242
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, amortization and accretion (including amortization of nuclear fuel) 143 127
Equity component of AFUDC (8) (13)
Deferred income taxes 18 21
Equity in earnings of unconsolidated affiliates (3) (4)
(Increase) decrease in    
Receivables 169 162
Receivables from affiliated companies 5 (2)
Inventory 27 65
Other current assets (33) (38)
Increase (decrease) in    
Accounts payable (55) (44)
Accounts payable to affiliated companies 22 4
Taxes accrued (42) (53)
Other current liabilities (61) (8)
Other assets (7) (10)
Other liabilities (3) 8
Net cash provided by operating activities 453 457
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (380) (571)
Other (15) (29)
Net cash used in investing activities (395) (600)
CASH FLOWS FROM FINANCING ACTIVITIES    
Notes payable to affiliated companies (57) 146
Other (1) 0
Net cash provided by financing activities (58) 146
Net increase in cash, cash equivalents and restricted cash 0 3
Cash, cash equivalents and restricted cash at beginning of period 2 0
Cash, cash equivalents and restricted cash at end of period 2 3
Significant non-cash transactions:    
Accrued capital expenditures $ 127 $ 159
v3.25.2
Condensed Consolidated Statements of Changes in Equity - Piedmont - USD ($)
$ in Millions
Total
Total Equity
Common Stock
Retained Earnings
Noncontrolling Interests
Piedmont
Piedmont
Total Equity
Piedmont
Common Stock
Piedmont
Retained Earnings
Piedmont
Noncontrolling Interests
Beginning Balance at Dec. 31, 2023 $ 50,187 $ 49,112 $ 1 $ 2,235 $ 1,075 $ 4,052 $ 4,051 $ 1,635 $ 2,416 $ 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 2,072         242 242   242  
Other 1 2   1 (1)          
Ending Balance at Jun. 30, 2024 50,806 49,707 1 2,635 1,099 4,294 4,293 1,635 2,658 1
Beginning Balance at Mar. 31, 2024 50,638 49,551 1 2,542 1,087 4,298 4,297 1,635 2,662 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 921         (4) (4)   (4)  
Other 1 1   1            
Ending Balance at Jun. 30, 2024 50,806 49,707 1 2,635 1,099 4,294 4,293 1,635 2,658 1
Beginning Balance at Dec. 31, 2024 51,256 50,127 1 3,431 1,129 4,354 4,353 1,635 2,718 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 2,411         281 281   281  
Other (2) 4   3 (6) 1     1  
Ending Balance at Jun. 30, 2025 52,030 50,891 1 4,141 1,139 4,636 4,635 1,635 3,000 1
Beginning Balance at Mar. 31, 2025 51,794 50,670 1 3,986 1,124 4,645 4,644 1,635 3,009 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 1,007         (10) (10)   (10)  
Other   0   (1)   1     1  
Ending Balance at Jun. 30, 2025 $ 52,030 $ 50,891 $ 1 $ 4,141 $ 1,139 $ 4,636 $ 4,635 $ 1,635 $ 3,000 $ 1
v3.25.2
Organization and Basis of Presentation
 6 Months Ended
Jun. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Organization and Basis of Presentation ORGANIZATION AND BASIS OF PRESENTATION
BASIS OF PRESENTATION
These Condensed Consolidated Financial Statements have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Regulation S-X. Accordingly, these Condensed Consolidated Financial Statements do not include all information and notes required by GAAP for annual financial statements and should be read in conjunction with the Consolidated Financial Statements in Duke Energy's Annual Report on Form 10-K for the year ended December 31, 2024.
The information in these combined notes relates to each of the Duke Energy Registrants as noted in the Index to Combined Notes to Condensed Consolidated Financial Statements. However, none of the registrants make any representations as to information related solely to Duke Energy or the subsidiaries of Duke Energy other than itself.
These Condensed Consolidated Financial Statements, in the opinion of the respective companies’ management, reflect all normal recurring adjustments necessary to fairly present the financial position and results of operations of each of the Duke Energy Registrants. Amounts reported in Duke Energy’s interim Condensed Consolidated Statements of Operations and each of the Subsidiary Registrants’ interim Condensed Consolidated Statements of Operations and Comprehensive Income are not necessarily indicative of amounts expected for the respective annual periods due to effects of seasonal temperature variations on energy consumption, regulatory rulings, timing of maintenance on electric generating units, changes in mark-to-market valuations, changing commodity prices and other factors.
In preparing financial statements that conform to GAAP, management must make estimates and assumptions that affect the reported amounts of assets and liabilities, the reported amounts of revenues and expenses and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates.
BASIS OF CONSOLIDATION
These Condensed Consolidated Financial Statements include, after eliminating intercompany transactions and balances, the accounts of the Duke Energy Registrants and subsidiaries or VIEs where the respective Duke Energy Registrants have control. See Note 12 for additional information on VIEs. These Condensed Consolidated Financial Statements also reflect the Duke Energy Registrants’ proportionate share of certain jointly owned generation and transmission facilities.
Discontinued Operations
Duke Energy has elected to present cash flows of discontinued operations combined with cash flows of continuing operations. Unless otherwise noted, the notes to these condensed consolidated financial statements exclude amounts related to discontinued operations for all periods presented. A portion of NCI on Duke Energy's Condensed Consolidated Balance Sheet as of December 31, 2024, relates to discontinued operations. See Note 2 for discussion of discontinued operations related to the Commercial Renewables Disposal Groups.
CASH, CASH EQUIVALENTS AND RESTRICTED CASH
Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress and Duke Energy Florida have restricted cash balances related primarily to collateral assets, escrow deposits and VIEs. See Notes 10 and 12 for additional information. Restricted cash amounts are included in Other within Current Assets and Other within Noncurrent Assets on the Condensed Consolidated Balance Sheets. The following table presents the components of cash, cash equivalents and restricted cash included in the Condensed Consolidated Balance Sheets.
June 30, 2025December 31, 2024
DukeDukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyDukeEnergyProgressEnergyEnergy
EnergyCarolinasEnergyProgressFlorida
Energy
CarolinasEnergyProgressFlorida
Current Assets
Cash and cash equivalents$344 $7 $58 $24 $16 $314 $6 $73 $24 $33 
Other75 9 66 37 28 84 9 76 40 35 
Other Noncurrent Assets
Other23 1 11 5 7 20 1 11 5 7 
Total cash, cash equivalents and restricted cash$442 $17 $135 $66 $51 $418 $16 $160 $69 $75 
INVENTORY
Provisions for inventory write-offs were not material at June 30, 2025, and December 31, 2024. The components of inventory are presented in the tables below.
 June 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Materials and supplies $3,403 $1,139 $1,660 $1,059 $601 $148 $406 $13 
Coal738 339 235 158 76 22 142 — 
Natural gas, oil and other fuel293 46 195 106 90 11 2 38 
Total inventory $4,434 $1,524 $2,090 $1,323 $767 $181 $550 $51 
 December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Materials and supplies $3,387 $1,150 $1,649 $1,074 $576 $149 $389 $11 
Coal801 341 241 164 77 23 196 — 
Natural gas, oil and other fuel321 45 196 103 92 11 1 67 
Total inventory $4,509 $1,536 $2,086 $1,341 $745 $183 $586 $78 
OTHER NONCURRENT ASSETS
Duke Energy, through a nonregulated subsidiary, was the winner of the Carolina Long Bay offshore wind auction in May 2022 and recorded an asset of $150 million related to the arrangement in Other within Other noncurrent assets on the Condensed Consolidated Balance Sheets as of June 30, 2025, and December 31, 2024.
ACCOUNTS PAYABLE
Duke Energy has a voluntary supply chain finance program (the “program”) that allows Duke Energy suppliers, at their sole discretion, to sell their receivables from Duke Energy to a global financial institution at a rate that leverages Duke Energy’s credit rating and which may result in favorable terms compared to the rate available to the supplier on their own credit rating. Suppliers participating in the program determine at their sole discretion which invoices they will sell to the financial institution. Suppliers’ decisions on which invoices are sold do not impact Duke Energy’s payment terms, which are based on commercial terms negotiated between Duke Energy and the supplier regardless of program participation. The commercial terms negotiated between Duke Energy and its suppliers are consistent regardless of whether the supplier elects to participate in the program. Duke Energy does not issue any guarantees with respect to the program and does not participate in negotiations between suppliers and the financial institution. Duke Energy does not have an economic interest in the supplier’s decision to participate in the program and receives no interest, fees or other benefit from the financial institution based on supplier participation in the program.
The following table presents the amounts included within Accounts payable on the Condensed Consolidated Balance Sheets sold to the financial institution by our suppliers and the supplier invoices sold to the financial institution under the program included within Net cash provided by operating activities on the Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2025, and 2024.
Three Months Ended June 30, 2024 and 2025
Duke
(in millions)EnergyPiedmont
Confirmed obligations outstanding at March 31, 2024
$76 $74 
Invoices confirmed during the period63 63 
Confirmed invoices paid during the period(111)(109)
Confirmed obligations outstanding at June 30, 2024
$28 $28 
Confirmed obligations outstanding at March 31, 2025
$18 $18 
Invoices confirmed during the period14 12 
Confirmed invoices paid during the period(20)(18)
Confirmed obligations outstanding at June 30, 2025
$12 $12 
Six Months Ended June 30, 2024 and 2025
Duke
(in millions)EnergyPiedmont
Confirmed obligations outstanding at December 31, 2023
$50 $47 
Invoices confirmed during the period120 119 
Confirmed invoices paid during the period(142)(138)
Confirmed obligations outstanding at June 30, 2024
$28 $28 
Confirmed obligations outstanding at December 31, 2024
$13 $12 
Invoices confirmed during the period32 30 
Confirmed invoices paid during the period(33)(30)
Confirmed obligations outstanding at June 30, 2025
$12 $12 
NEW ACCOUNTING STANDARDS
The following new accounting standards have been issued but not yet adopted by the Duke Energy Registrants as of June 30, 2025.
Improvements to Income Tax Disclosures. In December 2023, the Financial Accounting Standards Board (FASB) issued new accounting guidance to enhance income tax disclosures primarily related to existing rate reconciliation and income taxes paid information to include requiring disclosure at a more disaggregated level in the notes to the financial statements. The Duke Energy Registrants plan to adopt this guidance on a prospective basis as of January 1, 2025 in the Company's 2025 Form 10-K, Duke Energy is currently assessing the implementation of this guidance on the financial statement disclosures, but it will have no impact on the results of operations, cash flows or financial condition.
Disaggregation of Income Statement Expenses. In November 2024, the FASB issued new accounting guidance that requires enhanced disclosures of certain costs and expenses. This new guidance does not change the expense captions presented on the face of the Condensed Consolidated Statements of Operations but requires disaggregation of certain expense captions into specified categories in disclosures within the notes to the financial statements. For Duke Energy Registrants, the amendments will be effective for fiscal years beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027, with early adoption permitted. Duke Energy is currently assessing implementation of this guidance on the financial statement disclosures, but it will have no impact on the results of operations, cash flows or financial condition.
v3.25.2
Dispositions
 6 Months Ended
Jun. 30, 2025
Discontinued Operations and Disposal Groups [Abstract]  
Dispositions DISPOSITIONS
Minority Interest in Duke Energy Florida
On August 4, 2025, Duke Energy, Progress Energy and Florida Progress LLC (Florida Progress), the holding company of Duke Energy Florida, entered into an Investment Agreement (Investment Agreement) with an affiliate of Brookfield Super-Core Infrastructure Partners (Investor), pursuant to which Florida Progress agreed to issue membership interests to Investor for up to a 19.7% membership interest in Florida Progress following a series of closings, for an aggregate investment of $6 billion, subject to certain adjustments. At the first closing, Florida Progress will issue to Investor 9.2% of the Florida Progress membership interests for $2.8 billion. The first closing will be followed by additional closings with investments occurring no later than on the following timeline: (i) Investor will invest an additional $200 million in Florida Progress no later than December 31, 2026; (ii) Investor will invest an additional $500 million in Florida Progress no later than June 30, 2027; (iii) Investor will invest an additional $1.5 billion in Florida Progress no later than December 31, 2027; and (iv) Investor will invest an additional $1 billion in Florida Progress no later than June 30, 2028. The ownership interest of Florida Progress will transfer proportionally with each closing. The Investor has the option to fund its total $6 billion investment sooner. The transaction is subject to the satisfaction of certain customary conditions described in the Investment Agreement, including receipt of the approval of the FERC and completion of review by the Committee on Foreign Investments in the United States (CFIUS), as well as approval, or a determination that the transaction does not require approval, by the NRC. The Investment Agreement also provides that, upon termination of the Investment Agreement under certain specified circumstances prior to the first closing, the Investor will be required to pay Progress Energy a termination fee of $240 million.
Proceeds from the minority interest investment are expected to be used to efficiently fund Duke Energy’s growing capital and investment expenditures plan, primarily by displacing planned issuances of long-term debt and common equity through 2029.
The agreement limits Florida Progress’ ability to declare dividends before the first closing (anticipated to be in early 2026). The Investor will receive certain limited rights commensurate with its 19.7% investment in Florida Progress. Duke Energy and Progress Energy will retain control of Duke Energy Florida, so no gain or loss is expected to be recognized in their Condensed Consolidated Statements of Operations. The investment will be presented as noncontrolling interest within stockholders' equity.
Sale of Piedmont's Tennessee Business
On July 27, 2025, Piedmont entered into an Asset Purchase Agreement (Purchase Agreement) by and between Piedmont and Spire Inc., a Missouri corporation, for the sale of Piedmont’s Tennessee natural gas local distribution company business (Piedmont's Tennessee Business) with expected proceeds of $2.48 billion, subject to closing adjustments, with proceeds due at closing. Piedmont’s Tennessee Business is included within the Gas Utilities and Infrastructure segment of Duke Energy and Piedmont. Piedmont expects to complete the sale in the first quarter of 2026. Completion of the transaction is subject to customary closing conditions, including approval from the TPUC and expiration or termination of the applicable waiting period under the HSR. The Purchase Agreement contains certain termination rights and provides that Spire Inc. may be required to pay a termination fee for an amount equal to 6.5% of the purchase price to Piedmont upon termination of the Purchase Agreement under certain circumstances. In the third quarter of 2025, Duke Energy and Piedmont will reclassify the Piedmont disposal unit to assets held for sale. Proceeds from the sale are expected to be used for debt reduction at Piedmont and to efficiently fund Duke Energy's capital plan, primarily by displacing the issuance of common equity in the near term.
Sale of Commercial Renewables Segment
In 2023, Duke Energy completed the sale of substantially all the assets in the Commercial Renewables business segment. Duke Energy closed on the transaction with Brookfield on October 25, 2023, for proceeds of $1.1 billion, with approximately half of the proceeds received at closing and the remainder due 18 months after closing. The balance of the remaining proceeds of $551 million is included in Receivable from sales of Commercial Renewables Disposal Groups as of December 31, 2024, on Duke Energy's Condensed Consolidated Balance Sheets. On April 28, 2025, Duke Energy received the remaining sale proceeds from Brookfield. In January 2025, a sale of the remaining Commercial Renewables business assets was completed and proceeds from that disposition were not material.
Assets Held For Sale and Discontinued Operations
The Commercial Renewables Disposal Groups were classified as held for sale and as discontinued operations in the fourth quarter of 2022. No interest from corporate level debt was allocated to discontinued operations. Unless otherwise noted, the notes to these condensed consolidated financial statements exclude amounts related to discontinued operations for all periods presented.
The following table presents the carrying values of the major classes of Assets held for sale and Liabilities associated with assets held for sale included in Duke Energy's Condensed Consolidated Balance Sheets.
(in millions)June 30, 2025December 31, 2024
Current Assets Held for Sale
Other$— $4 
Total current assets held for sale— 4 
Noncurrent Assets Held for Sale
Property, Plant and Equipment
Cost— 109 
Accumulated depreciation and amortization— (24)
Net property, plant and equipment— 85 
Operating lease right-of-use assets, net— 4 
Total other noncurrent assets held for sale— 4 
Total Assets Held for Sale$— $93 
Current Liabilities Associated with Assets Held for Sale
Accounts payable$18 $19 
Taxes accrued— 1 
Current maturities of long-term debt— 43 
Unrealized losses on commodity hedges
— 13 
Other— 4 
Total current liabilities associated with assets held for sale18 80 
Noncurrent Liabilities Associated with Assets Held for Sale
Operating lease liabilities— 5 
Asset retirement obligations— 5 
Unrealized losses on commodity hedges
— 66 
Other— 13 
Total other noncurrent liabilities associated with assets held for sale— 89 
Total Liabilities Associated with Assets Held for Sale$18 $169 
As of June 30, 2025, the remaining held for sale liability balance relates to the previously sold Commercial Renewables Disposal Groups' assets and is expected to settle by December 31, 2025.
As of December 31, 2024, the noncontrolling interest balance is $18 million.
The following table presents the results of the Commercial Renewables Disposal Groups, which are included in Loss from Discontinued Operations, net of tax in Duke Energy's Condensed Consolidated Statements of Operations.
Three Months Ended
Six Months Ended
June 30,
June 30,
(in millions)2025202420252024
Operating revenues$— $13 $4 $7 
Operation, maintenance and other— 121 16
Property and other taxes— 1 — 1
Interest expense— — — 2
Loss on disposal
— 15 4 5 
Loss before income taxes— (15)(1)(17)
Income tax expense (benefit)
1 (5)— (4)
Net loss from discontinued operations attributable to Duke Energy Corporation
$(1)$(10)$(1)$(13)
Duke Energy has elected not to separately disclose discontinued operations on Duke Energy's Condensed Consolidated Statements of Cash Flows. The following table summarizes Duke Energy's cash flows from discontinued operations related to the Commercial Renewables Disposal Groups.
Six Months Ended
June 30,
(in millions)20252024
Cash flows (used in) provided by:
Operating activities$(3)$7 
Investing activities— (13)
Other Sale-Related Matters
As part of the 2023 purchase and sale agreement for the distributed generation group, Duke Energy agreed to retain certain guarantees, with expiration dates between 2029 through 2034, related to tax equity partners' assets and operations that were disposed of via sale. Duke Energy has obtained certain guarantees from the buyers in regards to future performance obligations to assist in limiting Duke Energy's exposure under the retained guarantees. The fair value of the guarantees is immaterial as Duke Energy does not believe conditions are likely for performance under these guarantees.
v3.25.2
Business Segments
 6 Months Ended
Jun. 30, 2025
Segment Reporting [Abstract]  
Business Segments BUSINESS SEGMENTS
Duke Energy
Duke Energy's segment structure includes the following two segments: EU&I and GU&I.
The EU&I segment primarily includes Duke Energy's regulated electric utilities in the Carolinas, Florida and the Midwest. EU&I also includes Duke Energy's electric transmission infrastructure investments and the offshore wind contract for Carolina Long Bay.
The GU&I segment includes Piedmont, Duke Energy's natural gas local distribution companies in Ohio and Kentucky and Duke Energy's natural gas storage, midstream pipeline and renewable natural gas investments.
The remainder of Duke Energy’s operations is presented as Other, which is primarily comprised of interest expense on holding company debt, unallocated corporate costs, Duke Energy’s wholly owned captive insurance company, Bison, and Duke Energy's ownership interest in NMC.
Business segment information is presented in the following tables. Segment assets presented exclude intercompany assets.
Three Months Ended June 30, 2025
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Unaffiliated revenues$7,030 $471 $7,501 $7 $— $7,508 
Intersegment revenues15 22 37 33 (70)— 
Total operating revenues
$7,045 $493 $7,538 $40 $(70)$7,508 
Less:
Fuel used in electric generation and purchased power$1,898 $— $1,898 $— $(20)$1,878 
Cost of natural gas— 158 158 — — 158 
Operation, maintenance and other1,594 129 1,723 (23)(45)1,655 
Depreciation and amortization1,402 112 1,514 77 (8)1,583 
Property and other taxes371 41 412 3 — 415 
Impairment of assets and other charges(1)— (1)5 (1)3 
Interest expense535 65 600 318 (21)897 
Income tax expense (benefit)200 (4)196 (77)— 119 
Other Segment Items
Noncontrolling interests(a)
23 — 23 — — 23 
Preferred dividends— — — 13 — 13 
Add: Equity in earnings of unconsolidated affiliates
— 1 1 9 1 11 
Add: Other(b)
171 13 184 39 (26)197 
Segment income (loss)
$1,194 $6 $1,200 $(228)$— $972 
Discontinued Operations
(1)
Net income available to Duke Energy Corporation Common Stockholders
$971 
Add back: Net income attributable to noncontrolling interest
23 
Add back: Preferred dividends
13 
Net Income
$1,007 
Three Months Ended June 30, 2024
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Unaffiliated revenues$6,802 $359 $7,161 $11 $— $7,172 
Intersegment revenues18 22 40 29 (69)— 
Total operating revenues
$6,820 $381 $7,201 $40 $(69)$7,172 
Less:
Fuel used in electric generation and purchased power$2,247 $— $2,247 $— $(19)$2,228 
Cost of natural gas— 78 78 — — 78 
Operation, maintenance and other1,262 117 1,379 (8)(51)1,320 
Depreciation and amortization1,246 96 1,342 73 (6)1,409 
Property and other taxes351 38 389 4 — 393 
Impairment of assets and other charges42 — 42 1 — 43 
Interest expense488 61 549 306 (31)824 
Income tax expense (benefit)214 2 216 (77)1 140 
Other Segment Items
Noncontrolling interests(a)
22 — 22 — (1)21 
Preferred dividends— — — 14 — 14 
Add: Equity in earnings of unconsolidated affiliates
1 — 1 19 1 21 
Add: Other(b)
141 17 158 54 (39)173 
Segment income (loss)(c)
$1,090 $6 $1,096 $(200)$— $896 
Discontinued Operations
(10)
Net income available to Duke Energy Corporation Common Stockholders
$886 
Add back: Net Income available to noncontrolling interest
21 
Add back: Preferred dividends
14 
Net Income
$921 
(a)Net income attributable to NCI related to continuing operations.
(b)    Other for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net.
(c)    EU&I includes $42 million recorded within Impairment of assets and other charges, $2 million within Operations, maintenance and other, and an $11 million reduction recorded within Interest Expense on Duke Energy Carolinas' and Duke Energy Progress' Condensed Consolidated Statement of Operations, related to the 2024 South Carolina rate case order.
Six Months Ended June 30, 2025
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Unaffiliated revenues$14,155 $1,587 $15,742 $15 $— $15,757 
Intersegment revenues30 46 76 67 (143)— 
Total operating revenues
$14,185 $1,633 $15,818 $82 $(143)$15,757 
Less:
Fuel used in electric generation and purchased power$4,017 $— $4,017 $— $(40)$3,977 
Cost of natural gas— 532 532 — — 532 
Operation, maintenance and other3,018 254 3,272 (21)(97)3,154 
Depreciation and amortization2,736 219 2,955 154 (14)3,095 
Property and other taxes749 88 837 6 — 843 
Impairment of assets and other charges(1)— (1)5 (1)3 
Interest expense1,065 130 1,195 636 (45)1,786 
Income tax expense (benefit)389 87 476 (164)— 312 
Other Segment Items
Noncontrolling interests(a)
48 — 48 — — 48 
Preferred dividends— — — 27 — 27 
Add: Equity in earnings of unconsolidated affiliates
— 6 6 15 1 22 
Add: Other(b)
306 26 332 58 (55)335 
Segment income (loss)
$2,470 $355 $2,825 $(488)$— $2,337 
Discontinued Operations
(1)
Net income available to Duke Energy Corporation Common Stockholders
$2,336 
Add back: Net income attributable to noncontrolling interest
48 
Add back: Preferred dividends
27 
Net Income
$2,411 
Capital investments expenditures and acquisitions$5,724 $548 $6,272 $156 $— $6,428 
Segment assets
167,420 18,305 185,725 3,988 — 189,713 
Six Months Ended June 30, 2024
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Unaffiliated revenues$13,587 $1,238 $14,825 $18 $— $14,843 
Intersegment revenues36 45 81 60 (141)— 
Total operating revenues
$13,623 $1,283 $14,906 $78 $(141)$14,843 
Less:
Fuel used in electric generation and purchased power$4,602 $— $4,602 $— $(39)$4,563 
Cost of natural gas— 310 310 — — 310 
Operation, maintenance and other2,578 246 2,824 (26)(99)2,699 
Depreciation and amortization2,471 194 2,665 144 (13)2,796 
Property and other taxes688 84 772 7 — 779 
Impairment of assets and other charges43 — 43 1 — 44 
Interest expense987 122 1,109 600 (68)1,641 
Income tax expense (benefit)387 71 458 (141)1 318 
Other Segment Items
Noncontrolling interests(a)
35 — 35 — (1)34 
Preferred dividends— — — 53 — 53 
Add: Equity in earnings of unconsolidated affiliates
2 — 2 36 — 38 
Add: Other(b)
277 34 311 121 (78)354 
Segment income (loss)(c)
$2,111 $290 $2,401 $(403)$— $1,998 
Discontinued Operations
(13)
Net income available to Duke Energy Corporation Common Stockholders
$1,985 
Add back: Net Income available to noncontrolling interest
34 
Add back: Preferred dividends
53 
Net Income
$2,072 
Capital investments expenditures and acquisitions$5,349 $723 $6,072 $140 $— $6,212 
Segment assets
159,770 17,600 177,370 4,205 — 181,575 
(a)Net income attributable to NCI related to continuing operations.
(b)    Other for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net.
(c)    EU&I includes $42 million recorded within Impairment of assets and other charges, $2 million within Operations, maintenance and other, and an $11 million reduction recorded within Interest Expense on Duke Energy Carolinas' and Duke Energy Progress' Condensed Consolidated Statement of Operations, related to the 2024 South Carolina rate case order.
Duke Energy Carolinas
Duke Energy Carolinas has one reportable segment, EU&I. The remainder of Duke Energy Carolinas' operations is presented as Other.
Three Months Ended June 30, 2025Six Months Ended June 30, 2025
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$2,231 $— $2,231 $4,755 $— $4,755 
Less:
Fuel used in electric generation and purchased power$571 $— $571 $1,374 $— $1,374 
Operation, maintenance and other488 12 500 962 22 984 
Depreciation and amortization482 — 482 914 — 914 
Property and other taxes85 — 85 187 — 187 
Impairment of assets and other charges(1)— (1)(1)— (1)
Interest expense200 — 200 400 — 400 
Income tax expense (benefit)39 (3)36 92 (5)87 
Add: Other segment items(a)
68 (1)67 129 (1)128 
Segment income (loss) / Net income$435 $(10)$425 $956 $(18)$938 
Capital expenditures$2,145 $— $2,145 
Segment assets56,335 264 56,599 
Three Months Ended June 30, 2024Six Months Ended June 30, 2024
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$2,297 $— $2,297 $4,704 $— $4,704 
Less:
Fuel used in electric generation and purchased power$749 $— $749 $1,609 $— $1,609 
Operation, maintenance and other434 10 444 874 21 895 
Depreciation and amortization437 — 437 834 — 834 
Property and other taxes89 — 89 183 — 183 
Impairment of assets and other charges33 — 33 34 — 34 
Interest expense168 — 168 348 — 348 
Income tax expense (benefit)51 (3)48 109 (5)104 
Add: Other segment items(a)
63 (1)62 125 (1)124 
Segment income (loss) / Net income$399 $(8)$391 $838 $(17)$821 
Capital expenditures$1,949 $— $1,949 
Segment assets53,160 214 53,374 
(a)    Other segment items include Gains on sales of other assets and other, net, and Other income and expenses, net.
Progress Energy
Progress Energy has one reportable segment, EU&I. The remainder of Progress Energy's operations is presented as Other.
Three Months Ended June 30, 2025Six Months Ended June 30, 2025
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$3,566 $3 $3,569 $7,028 $8 $7,036 
Less:
Fuel used in electric generation and purchased power$1,025 $— $1,025 $2,131 $— $2,131 
Operation, maintenance and other828 15 843 1,501 30 1,531 
Depreciation and amortization609 — 609 1,240 — 1,240 
Property and other taxes175 — 175 347 — 347 
Interest expense255 28 283 501 57 558 
Income tax expense (benefit)121 (13)108 239 (21)218 
Add: Other segment items(a)
76 5 81 137 5 142 
Segment income (loss) / Net income$629 $(22)$607 $1,206 $(53)$1,153 
Capital expenditures$2,742 $— $2,742 
Segment assets69,489 4,822 74,311 
Three Months Ended June 30, 2024Six Months Ended June 30, 2024
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$3,352 $5 $3,357 $6,576 $9 $6,585 
Less:
Fuel used in electric generation and purchased power$1,202 $— $1,202 $2,345 $— $2,345 
Operation, maintenance and other571 17 588 1,187 29 1,216 
Depreciation and amortization568 — 568 1,155 — 1,155 
Property and other taxes167 (1)166 324 — 324 
Impairment of assets and other charges9 — 9 9 — 9 
Interest expense237 28 265 468 57 525 
Income tax expense (benefit)114 (10)104 209 (19)190 
Add: Other segment items(a)
56 10 66 117 18 135 
Segment income (loss) / Net income$540 $(19)$521 $996 $(40)$956 
Capital expenditures$2,623 $— $2,623 
Segment assets65,620 3,844 69,464 
(a)    Other segment items include Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Progress
Duke Energy Progress has one reportable segment, EU&I. The remainder of Duke Energy Progress' operations is presented as Other.
Three Months Ended June 30, 2025Six Months Ended June 30, 2025
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$1,681 $— $1,681 $3,699 $— $3,699 
Less:
Fuel used in electric generation and purchased power$574 $— $574 $1,299 $— $1,299 
Operation, maintenance and other333 7 340 724 14 738 
Depreciation and amortization319 — 319 676 — 676 
Property and other taxes45 — 45 105 — 105 
Interest expense139 — 139 267 — 267 
Income tax expense (benefit)40 (1)39 98 (3)95 
Add: Other segment items(a)
50 — 50 89 (2)87 
Segment income (loss) / Net income$281 $(6)$275 $619 $(13)$606 
Capital expenditures$1,524 $— $1,524 
Segment assets40,486 1,072 41,558 
Three Months Ended June 30, 2024Six Months Ended June 30, 2024
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$1,636 $— $1,636 $3,424 $— $3,424 
Less:
Fuel used in electric generation and purchased power$597 $— $597 $1,217 $— $1,217 
Operation, maintenance and other320 6 326 689 12 701 
Depreciation and amortization306 — 306 645 — 645 
Property and other taxes50 — 50 101 — 101 
Impairment of assets and other charges9 — 9 9 — 9 
Interest expense123 — 123 243 — 243 
Income tax expense (benefit)39 — 39 89 (2)87 
Add: Other segment items(a)
36 1 37 72 2 74 
Segment income (loss) / Net income$228 $(5)$223 $503 $(8)$495 
Capital expenditures$1,373 $— $1,373 
Segment assets38,562 99 38,661 
(a)    Other segment items include Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Florida
Duke Energy Florida has one reportable segment, EU&I. The remainder of Duke Energy Florida's operations is presented as Other.
Three Months Ended June 30, 2025Six Months Ended June 30, 2025
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$1,885 $— $1,885 $3,329 $— $3,329 
Less:
Fuel used in electric generation and purchased power$451 $— $451 $832 $— $832 
Operation, maintenance and other495 5 500 777 9 786 
Depreciation and amortization290 — 290 564 — 564 
Property and other taxes130 — 130 242 — 242 
Interest expense116 — 116 234 — 234 
Income tax expense (benefit)81 — 81 141 (2)139 
Add: Other segment items(a)
26 1 27 48 (2)46 
Segment income (loss) / Net income$348 $(4)$344 $587 $(9)$578 
Capital expenditures$1,218 $— $1,218 
Segment assets29,003 89 29,092 
Three Months Ended June 30, 2024Six Months Ended June 30, 2024
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$1,716 $— $1,716 $3,152 $— $3,152 
Less:
Fuel used in electric generation and purchased power$605 $— $605 $1,128 $— $1,128 
Operation, maintenance and other251 5 256 498 9 507 
Depreciation and amortization262 — 262 510 — 510 
Property and other taxes117 — 117 223 — 223 
Interest expense114 — 114 225 — 225 
Income tax expense (benefit)75 — 75 120 (2)118 
Add: Other segment items(a)
20 2 22 45 2 47 
Segment income (loss) / Net income$312 $(3)$309 $493 $(5)$488 
Capital expenditures$1,251 $— $1,251 
Segment assets27,058 20 27,078 
(a)    Other segment items include Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Ohio
Duke Energy Ohio has two reportable segments, EU&I and GU&I. The remainder of Duke Energy Ohio's operations is presented as Other.
Three Months Ended June 30, 2025
ElectricGasTotal
Utilities andUtilities andReportable
Eliminations/
(in millions)InfrastructureInfrastructureSegmentsOtherTotal
Total operating revenues
$498 $156 $654 $— $654 
Less:
Fuel used in electric generation and purchased power$161 $— $161 $— $161 
Cost of natural gas— 35 35 — 35 
Operation, maintenance and other87 27 114 1 115 
Depreciation and amortization83 39 122 (1)121 
Property and other taxes80 21 101 — 101 
Interest expense32 18 50 1 51 
Income tax expense (benefit)9 3 12 — 12 
Add: Other segment items(a)
4 2 6 — 6 
Segment income (loss) / Net income
$50 $15 $65 $(1)$64 
Three Months Ended June 30, 2024
ElectricGasTotal
Utilities andUtilities andReportable
Eliminations/
(in millions)InfrastructureInfrastructureSegmentsOtherTotal
Total operating revenues
$476 $132 $608 $— $608 
Less:
Fuel used in electric generation and purchased power$132 $— $132 — $132 
Cost of natural gas— 21 21 — 21 
Operation, maintenance and other88 30 118 3 121 
Depreciation and amortization65 31 96 — 96 
Property and other taxes80 22 102 — 102 
Interest expense32 17 49 (2)47 
Income tax expense (benefit)13 4 17 (1)16 
Add: Other segment items(a)
3 2 5 (1)4 
Segment income (loss) / Net income$69 $9 $78 $(1)$77 
(a)    Other segment items for EU&I and GU&I include Gains on sales of other assets and other, net, and Other income and expenses, net.
Six Months Ended June 30, 2025
ElectricGasTotal
Utilities andUtilities andReportable
Eliminations/
(in millions)InfrastructureInfrastructureSegmentsOtherTotal
Total operating revenues
$985 $435 $1,420 $— $1,420 
Less:
Fuel used in electric generation and purchased power$310 $— $310 $— $310 
Cost of natural gas— 136 136 — 136 
Operation, maintenance and other179 56 235 4 239 
Depreciation and amortization159 75 234 (1)233 
Property and other taxes166 51 217 — 217 
Interest expense63 34 97 1 98 
Income tax expense (benefit)18 17 35 (1)34 
Add: Other segment items(a)
8 4 12 (1)11 
Segment income (loss) / Net income
$98 $70 $168 $(4)$164 
Capital expenditures$303 $168 $471 $— $471 
Segment assets8,378 4,582 12,960 36 12,996 
Six Months Ended June 30, 2024
ElectricGasTotal
Utilities andUtilities andReportable
Eliminations/
(in millions)InfrastructureInfrastructureSegmentsOtherTotal
Total operating revenues
$934 $352 $1,286 $— $1,286 
Less:
Fuel used in electric generation and purchased power$270 $— $270 — $270 
Cost of natural gas— 82 82 — 82 
Operation, maintenance and other181 62 243 4 247 
Depreciation and amortization131 64 195 — 195 
Property and other taxes151 53 204 — 204 
Interest expense61 32 93 (1)92 
Income tax expense (benefit)23 13 36 (1)35 
Add: Other segment items(a)
7 4 11 (1)10 
Segment income (loss) / Net income
$124 $50 $174 $(3)$171 
Capital expenditures$273 $144 $417 $— $417 
Segment assets8,034 4,389 12,423 178 12,601 
(a)    Other segment items for EU&I and GU&I include Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Indiana
Duke Energy Indiana has one reportable segment, EU&I. The remainder of Duke Energy Indiana's operations is presented as Other.
Three Months Ended June 30, 2025Six Months Ended June 30, 2025
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$821 $— $821 $1,679 $— $1,679 
Less:
Fuel used in electric generation and purchased power$219 $— $219 $479 $— $479 
Operation, maintenance and other189 3 192 382 5 387 
Depreciation and amortization222 — 222 414 — 414 
Property and other taxes17 — 17 35 — 35 
Interest expense56 1 57 116 — 116 
Income tax expense (benefit)20 (2)18 38 (2)36 
Add: Other segment items(a)
22 (1)21 32 (1)31 
Segment income (loss) / Net income$120 $(3)$117 $247 $(4)$243 
Capital expenditures$526 $— $526 
Segment assets15,940 240 16,180 
Three Months Ended June 30, 2024Six Months Ended June 30, 2024
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$747 $— $747 $1,506 $— $1,506 
Less:
Fuel used in electric generation and purchased power$223 $— $223 $494 $— $494 
Operation, maintenance and other161 — 161 339 2 341 
Depreciation and amortization172 — 172 341 — 341 
Property and other taxes16 — 16 30 — 30 
Interest expense58 — 58 115 — 115 
Income tax expense (benefit)22 — 22 36 — 36 
Add: Other segment items(a)
16 (1)15 29 (1)28 
Segment income (loss) / Net income$111 $(1)$110 $180 $(3)$177 
Capital expenditures$489 $— $489 
Segment assets15,590 59 15,649 
(a)    Other segment items include Gains on sales of other assets and other, net, and Other income and expenses, net.
Piedmont
Piedmont has one reportable segment, GU&I. The remainder of Piedmont's operations is presented as Other.
Three Months Ended June 30, 2025Six Months Ended June 30, 2025
Gas
Gas
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$335 $— $335 $1,192 $— $1,192 
Less:
Cost of natural gas$124 $— $124 $396 $— $396 
Operation, maintenance and other101 2 103 195 4 199 
Depreciation and amortization71 — 71 141 — 141 
Property and other taxes19 — 19 37 — 37 
Interest expense47 1 48 94 1 95 
Income tax (benefit) expense
(7)(1)(8)69 (1)68 
Other Segment Items
Add: Equity in earnings of unconsolidated affiliates— 1 1 — 3 3 
Add: Other(a)
11 — 11 22 — 22 
Segment (loss) income / Net (loss) income
$(9)$(1)$(10)$282 $(1)$281 
Capital expenditures$380 $— $380 
Segment assets11,844 87 11,931 
Three Months Ended June 30, 2024Six Months Ended June 30, 2024
Gas
Gas
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$244 $— $244 $920 $— $920 
Less:
Cost of natural gas$58 $— $58 $228 $— $228 
Operation, maintenance and other83 2 85 178 2 180 
Depreciation and amortization64 — 64 126 — 126 
Property and other taxes16 — 16 31 — 31 
Interest expense43 — 43 88 — 88 
Income tax (benefit) expense
(1)— (1)58 1 59 
Other Segment Items
Add: Equity in earnings of unconsolidated affiliates— 2 2 — 4 4 
Add: Other(a)
15 — 15 30 — 30 
Segment (loss) income / Net (loss) income
$(4)$— $(4)$241 $1 $242 
Capital expenditures$571 $— $571 
Segment assets11,208 93 11,301 
(a)    Other includes Gains on sales of other assets and other, net, and Other income and expenses, net.
v3.25.2
Regulatory Matters
 6 Months Ended
Jun. 30, 2025
Regulated Operations [Abstract]  
Regulatory Matters REGULATORY MATTERS
RATE-RELATED INFORMATION
The NCUC, PSCSC, FPSC, IURC, PUCO, TPUC and KPSC approve rates for retail electric and natural gas services within their states. The FERC regulates and approves rates for wholesale electric sales and interstate transmission rates. The FERC also regulates certification and siting of new interstate natural gas pipeline projects. For open regulatory matters, unless otherwise noted, the Subsidiary Registrants cannot predict the outcome or ultimate resolution of their respective matters.
Duke Energy Carolinas and Duke Energy Progress
Hurricanes Debby and Helene
In 2024, hurricanes Debby and Helene significantly impacted the Duke Energy Carolinas and Duke Energy Progress territories in North Carolina and South Carolina. As of June 30, 2025, the total cumulative operations and maintenance expense incurred for restoration and rebuilding of infrastructure associated with the hurricanes was approximately $812 million ($530 million and $282 million for Duke Energy Carolinas and Duke Energy Progress, respectively). The reduction in cumulative operations and maintenance expense compared to December 31, 2024, of $82 million for Duke Energy Carolinas and an increase of $34 million for Duke Energy Progress, was recorded in Regulatory assets within Other Noncurrent Assets on the Condensed Consolidated Balance Sheets. In addition, through June 30, 2025, there have been cumulative capital investments of $468 million ($378 million and $90 million for Duke Energy Carolinas and Duke Energy Progress, respectively) associated with the hurricanes. Amounts are net of expected insurance recoveries and could change going forward as storm restoration and rebuild work is finalized. Additional estimated capital costs of approximately $70 million are expected to be incurred through the first half of 2026 to rebuild the systems from hurricane damage.
North Carolina Storm Cost Securitization
In December 2024, Duke Energy Carolinas and Duke Energy Progress filed their joint petition for review and approval of storm recovery costs (Phase 1) with the NCUC to securitize the North Carolina-retail allocable share of storm costs associated with hurricanes Helene, Debby and Ian, as well as Hurricane Zeta and Winter Storm Izzy, and the establishment of storm reserves for $200 million at Duke Energy Carolinas and $100 million at Duke Energy Progress. On February 3, 2025, Duke Energy Carolinas and Duke Energy Progress filed their joint petition for financing orders (Phase 2). In February 2025, Duke Energy Carolinas and Duke Energy Progress reached a settlement agreement with the North Carolina Public Staff and other intervening parties that resolved all issues between the parties in the Phase 1 proceeding and removed the establishment of storm reserves from the securitization proceeding. Further, the settlement outlined agreement on certain issues in the Phase 2 proceeding.
On April 16, 2025, the NCUC issued its Phase 1 order approving the settlement and determining that approximately $584 million for Duke Energy Carolinas and $461 million for Duke Energy Progress in storm recovery costs are reasonable and prudent and eligible for securitization. The order authorized the companies to proceed to Phase 2 of the securitization process. On April 15, 2025, Duke Energy Carolinas and Duke Energy Progress filed a settlement with the North Carolina Public Staff resolving all remaining issues in Phase 2. On June 18, 2025, the NCUC issued its Phase 2 order approving the settlement and issuing the financing orders. Duke Energy Carolinas and Duke Energy Progress expect to securitize the North Carolina-retail allocable share of storm costs by the end of 2025.
South Carolina Storm Cost Securitization
On March 21, 2025, Duke Energy Carolinas filed a petition for storm securitization with the PSCSC for authorization to finance the estimated South Carolina-retail allocable share of storm costs primarily related to Hurricane Helene storm recovery activities and inclusive of funding $25 million related to storm reserves. On June 25, 2025, an evidentiary hearing was held. Duke Energy Carolinas reached a comprehensive settlement among all parties in the proceeding which was filed with the PSCSC supporting securitization of approximately $556 million, including the storm reserve funding. On July 10, 2025, the PSCSC approved the settlement and the financing order was issued on August 1, 2025. Duke Energy Carolinas expects to securitize the South Carolina-retail allocable share of storm costs by the end of 2025. Due to the relatively low level of storm costs incurred by Duke Energy Progress in South Carolina, Duke Energy Progress will not seek to pursue securitization of those costs and has offset them against established storm reserve balances.
Application to Combine Utilities
On July 30, 2025, Duke Energy Carolinas and Duke Energy Progress (together, the Companies) filed a notice of intent with the NCUC and PSCSC that notifies the respective state regulatory commissions of the Companies' intent to file applications for approval to combine utilities, by which Duke Energy Progress will merge into Duke Energy Carolinas, resulting in a single electric utility serving the Companies' North Carolina and South Carolina service territories. The Companies plan to file applications no earlier than August 14, 2025, with the NCUC, PSCSC and FERC. The Companies have been engaging with stakeholders and will continue to do so in advance of filing and intend to propose a procedural schedule for consideration at the time of filing. Subject to regulatory approvals, the Company is currently targeting an effective date of January 1, 2027. There is no assurance that Duke Energy Carolinas and Duke Energy Progress will obtain the required regulatory approvals from the NCUC, PSCSC, and the FERC, and the transaction cannot proceed without all three.
Duke Energy Carolinas
Oconee Subsequent License Renewal
On June 7, 2021, Duke Energy Carolinas filed a subsequent license renewal (SLR) application for Oconee with the NRC to renew the operating licenses. On March 31, 2025, the NRC issued the subsequent renewed licenses for Oconee, allowing an additional 20 years of operation to 2053 (units 1 and 2) and 2054 (unit 3).
2023 North Carolina Rate Case
In January 2023, Duke Energy Carolinas filed a performance-based regulation (PBR) application with the NCUC to request an increase in base rate retail revenues. The PBR application included an MYRP to recover projected capital investments during the three-year MYRP period. In addition to the MYRP, the PBR application included an Earnings Sharing Mechanism, Residential Decoupling Mechanism and Performance Incentive Mechanisms (PIMS) as required by HB951.
In August 2023, Duke Energy Carolinas filed with the NCUC a partial settlement with the North Carolina Public Staff in connection with its PBR application. The partial settlement included, among other things, agreement on a substantial portion of the North Carolina retail rate base for the historic base case of approximately $19.5 billion and all of the capital projects and related costs to be included in the three-year MYRP, including $4.6 billion (North Carolina retail allocation) projected to go in service over the MYRP period. Additionally, the partial settlement included agreement, with certain adjustments, on depreciation rates, the recovery of grid improvement plan costs and PIMs, Tracking Metrics and the Residential Decoupling Mechanism under the PBR application. On August 28, 2023, Duke Energy Carolinas filed with the NCUC a second partial settlement with the North Carolina Public Staff resolving additional issues, including the future treatment of nuclear PTCs related to the IRA, through a stand-alone rider that would provide the benefits to customers. This stand-alone rider was effective in rates beginning January 1, 2025.
On December 15, 2023, the NCUC issued an order approving Duke Energy Carolinas' PBR application, as modified by the partial settlements and the order, including an overall retail revenue increase of $436 million in Year 1, $174 million in Year 2 and $158 million in Year 3, for a combined total of $768 million. The order established an ROE of 10.1% based upon an equity ratio of 53% and approved, with certain adjustments, depreciation rates and the recovery of grid improvement plan costs and certain deferred COVID-related costs. Additionally, the Residential Decoupling Mechanism and PIMs were approved as requested under the PBR application and revised by the partial settlements. Duke Energy Carolinas implemented interim rates on September 1, 2023. New revised Year 1 rates and the residential decoupling were implemented on January 15, 2024.
In February 2024, a number of parties filed Notices of Appeal of the December 15, 2023, NCUC order. Notices of Appeal were filed by the Carolina Industrial Group for Fair Utility Rates (CIGFUR) III, a collection of electric membership cooperatives (collectively, the EMCs), and the North Carolina Attorney General’s Office (the AGO). CIGFUR III and the EMCs appealed the interclass subsidy reduction percentage and the Transmission Cost Allocation stipulation. In addition, CIGFUR III appealed the NCUC’s elimination of the equal percentage fuel cost allocation methodology. The AGO appealed several issues including the authorized ROE and certain rate design and accounting matters. On March 1, 2024, Carolina Utility Customers Association, Inc. appealed several issues, including the authorized ROE and certain rate design and accounting matters. In July 2024, the Supreme Court of North Carolina consolidated these appeals with the parallel appeals of the NCUC's order regarding the Duke Energy Progress PBR application. Briefing is complete and oral arguments occurred on February 13, 2025. Duke Energy Carolinas anticipates a decision to be issued no later than the fourth quarter of 2025.
2025 South Carolina Rate Case
On July 1, 2025, Duke Energy Carolinas filed a base rate case with the PSCSC requesting an annualized increase in electric base rates of approximately $151 million and an ROE of 10.85% with an equity ratio of 53%. This is an overall average customer rate increase of approximately 7.7%. The request for the rate increase is driven by significant capital investments, including generation plant additions, as well as transmission, distribution and grid improvements. Duke Energy Carolinas has requested new rates to go into effect no later than March 1, 2026. An evidentiary hearing is scheduled to commence on November 13, 2025. An order is expected by the end of 2025.
Duke Energy Progress
2022 North Carolina Rate Case
In October 2022, Duke Energy Progress filed a PBR application with the NCUC to request an increase in base rate retail revenues. The rate request before the NCUC included an MYRP to recover projected capital investments during the three-year MYRP period. In addition to the MYRP, the PBR application included an Earnings Sharing Mechanism, Residential Decoupling Mechanism and PIMs as required by HB951.
In April 2023, Duke Energy Progress filed with the NCUC a partial settlement with North Carolina Public Staff, which included agreement on many aspects of Duke Energy Progress' three-year MYRP proposal. In May 2023, CIGFUR II joined this partial settlement and North Carolina Public Staff and CIGFUR II filed a separate settlement reaching agreement on PIMs, Tracking Metrics and the Residential Decoupling Mechanism under the PBR application.
On August 18, 2023, the NCUC issued an order approving Duke Energy Progress' PBR application, as modified by the partial settlements and the order, including an overall retail revenue increase of $233 million in Year 1, $126 million in Year 2 and $135 million in Year 3, for a combined total of $494 million. Key aspects of the order include the approval of North Carolina retail rate base for the historic base case of approximately $12.2 billion and capital projects and related costs to be included in the three-year MYRP, including $3.5 billion (North Carolina retail allocation) projected to go in service over the MYRP period. The order established an ROE of 9.8% based upon an equity ratio of 53% and approved, with certain adjustments, depreciation rates and the recovery of grid improvement plan costs and certain deferred COVID-related costs. Additionally, the Residential Decoupling Mechanism and PIMs were approved as requested under the PBR application and revised by the partial settlements. Duke Energy Progress implemented interim rates on June 1, 2023, and implemented revised Year 1 rates and the residential decoupling on October 1, 2023.
In October 2023, CIGFUR II and Haywood Electric Membership Corporation each filed a Notice of Appeal of the August 18, 2023 NCUC order. Both parties are appealing certain matters that do not impact the overall revenue requirement in the rate case. Specifically, they appealed the interclass subsidy reduction percentage, and CIGFUR II also appealed the Customer Assistance Program and the equal percentage fuel cost allocation methodology. In November 2023, the AGO filed a Notice of Cross Appeal of the NCUC's determination regarding the exclusion of electric vehicle revenue from the residential decoupling mechanism. In November 2023, Duke Energy Progress, the North Carolina Public Staff, CIGFUR II, and a number of other parties reached a settlement pursuant to which CIGFUR II agreed not to pursue its appeal of the Customer Assistance Program. In July 2024, the Supreme Court of North Carolina consolidated these appeals with the parallel appeals of the NCUC's order regarding the Duke Energy Carolinas PBR application. Briefing is complete and oral arguments occurred in February 2025. Duke Energy Progress anticipates a decision to be issued no later than the fourth quarter of 2025.
Person County Combined Cycle CPCN
On February 7, 2025, Duke Energy Progress filed with the NCUC its application to construct and operate a second 1,360-MW hydrogen-capable, advanced-class CC unit in Person County at the Roxboro Plant. NCEMC has also notified Duke Energy Progress of NCEMC's intent to co-own approximately 225 MW of the second CC and Duke Energy Progress and NCEMC began negotiations on the contractual arrangement in the second quarter of 2025. NCEMC has the right to co-own the facility under its existing supply agreement with Duke Energy Progress. Pending regulatory approvals, construction of the second CC is planned to start in 2026 with the unit targeted to be placed in service by the end of 2029. As part of the application, Duke Energy Progress noted that the recovery of Construction Work in Progress during the construction period for the proposed facility may be pursued in a future rate case. The 2030 North Carolina retail revenue requirement for the proposed facility is estimated to be $113 million, representing an approximate average retail rate increase of 2.6% across all classes. The air permit issued by the NCDEQ in December 2024, also pertains to the second CC. An evidentiary hearing on the second CC CPCN concluded on July 22, 2025. An order is expected by the end of 2025.
Robinson Subsequent License Renewal
In April 2025, Duke Energy Progress filed an SLR application for Robinson with the NRC to renew Robinson’s operating license for an additional 20 years. The current license expires in 2030 and the renewal would extend the operating license of the facility to 2050. The NRC is performing the safety and environmental reviews for the application and is scheduled to reach a decision by April 2026.
2025 South Carolina Rate Case
On June 12, 2025, Duke Energy Progress filed a base rate case with the PSCSC requesting an annualized increase in electric base rates of approximately $75 million and an ROE of 10.85% with an equity ratio of 53%. This is an overall average customer rate increase of approximately 12.1%. The request for the rate increase is driven by significant capital investments, primarily including transmission, distribution and grid improvements. Duke Energy Progress has requested new rates to go into effect no later than February 1, 2026. An evidentiary hearing is scheduled to commence on October 27, 2025.
Duke Energy Florida
Clean Energy Connection
In July 2020, Duke Energy Florida petitioned the FPSC for approval of a voluntary solar program consisting of 10 new solar generating facilities with combined capacity of 749 MW. The FPSC approved the program in January 2021, allowing participants to support cost-effective solar development in Florida by paying a subscription fee based on per kilowatt subscriptions and receiving a credit on their bill based on the actual generation associated with their portion of the solar portfolio. The 10 new solar generation facilities were completed and all of the remaining sites were in service by the end of 2024 at a cost of approximately $1.1 billion. These investments are included in base rates offset by the revenue from the subscription fees, with credits included in the fuel cost recovery clause.
In February 2021, the League of United Latin American Citizens (LULAC) filed a notice of appeal of the FPSC’s order approving the Clean Energy Connection to the Supreme Court of Florida. The Supreme Court of Florida heard oral arguments in the appeal in February 2022. On May 27, 2022, the Supreme Court of Florida issued an order remanding the case back to the FPSC so that the FPSC can amend its order to better address some of the arguments raised by LULAC. In September 2022, the FPSC issued a revised order and submitted it to the Supreme Court of Florida. The Supreme Court of Florida requested that the parties file supplemental briefs regarding the revised order, which were filed in February 2023. On July 17, 2025, the Supreme Court of Florida issued an order affirming the revised FPSC order. The ruling did not change the solar program or have other financial implications. This matter is now fully resolved.
Storm Protection Plan
At least every three years, Duke Energy Florida must file an SPP with the FPSC. Each plan covers a 10-year period and includes investments in transmission and distribution meant to strengthen infrastructure, reduce outage times associated with extreme weather events, reduce restoration costs and improve overall service reliability. In April 2022, Duke Energy Florida filed an SPP for approval with the FPSC for the 2023-2032 time frame. The plan reflected approximately $7 billion of capital investment in transmission and distribution. The evidentiary hearing began in August 2022. In October 2022, the FPSC approved Duke Energy Florida’s plan with one modification to remove the transmission loop radially fed program, representing a reduction of approximately $80 million over the 10-year period starting in 2025. In December 2022, the Office of Public Counsel (OPC) filed a notice of appeal of this order to the Supreme Court of Florida and briefs were filed by the OPC and Duke Energy Florida during 2023. On November 14, 2024, the Supreme Court of Florida issued an order upholding the FPSC's approval of Duke Energy Florida's plan.
In January 2025, Duke Energy Florida filed an SPP for approval with the FPSC for the 2026-2035 time frame reflecting approximately $7 billion of capital investment in transmission and distribution. On March 12, 2025, the OPC filed testimony recommending that the pace of the proposed spend be reduced, as well as challenging three subprograms in Duke Energy Florida's SPP. Duke Energy Florida filed rebuttal testimony on April 2, 2025, requesting that the FPSC approve its SPP as filed. On May 16, 2025, Duke Energy Florida and the OPC filed Joint Stipulations to resolve all matters, and the FPSC issued an order on June 19, 2025, approving those stipulations. The stipulations require Duke Energy Florida to defer certain work in two programs from 2026 to 2027 and later. The remainder of Duke Energy Florida's filed SPP was approved without modification. This matter is now fully resolved.
Hurricanes Debby, Helene and Milton
In 2024, Hurricane Debby (Category 1 storm), Hurricane Helene (Category 4 storm) and Hurricane Milton (Category 3 storm) made landfall in Florida and caused significant damage. Duke Energy Florida has certain existing storm reserve regulatory liability amounts, which are applied to the recovery of storm costs. The storm reserve amount was approximately $63 million as of July 31, 2024, prior to the damage resulting from hurricanes Debby, Helene and Milton. Duke Energy Florida is permitted to petition the FPSC for recovery of incremental operation and maintenance costs resulting from the storms and to replenish the retail customer storm reserve to approximately $132 million.
In December 2024, Duke Energy Florida filed its petition to recover the estimated costs incurred to respond to all three storms, including replenishment of the storm reserve, seeking recovery of approximately $1.1 billion over 12 months beginning with the first billing cycle in March 2025. Approximately $454 million and $936 million of the operation and maintenance expenses, net of storm reserves, are deferred in Regulatory assets within Current assets as of June 30, 2025, and December 31, 2024, respectively. Approximately $81 million of capital related to these storms will be sought for recovery in future base rate case filings. On February 4, 2025, the FPSC voted to approve Duke Energy Florida's request for recovery of these estimated storm costs as filed, subject to true-up after the actual costs are filed. New rates were effective March 1, 2025.
Duke Energy Ohio
Duke Energy Ohio Natural Gas Base Rate Case
In June 2022, Duke Energy Ohio filed a natural gas base rate case application with the PUCO. The drivers for this case were capital invested since Duke Energy Ohio's last natural gas base rate case in 2012. Duke Energy Ohio also sought to adjust the caps on its Capital Expenditure Program (CEP) rider. In April 2023, Duke Energy Ohio filed a stipulation with all parties to the case except the Ohio Consumers' Counsel (OCC). In the stipulation, the parties agreed to approximately $32 million in revenue increases with an equity ratio of 52.32% and an ROE of 9.6%, and adjustments to the CEP Rider caps. The stipulation was opposed by the OCC at an evidentiary hearing that concluded in May 2023. On November 1, 2023, PUCO issued an order approving the stipulation as filed and new rates went into effect November 1, 2023. In December 2023, the OCC filed an application for rehearing and the PUCO granted OCC's application for rehearing for further consideration of issues raised. As a result of a Supreme Court of Ohio decision regarding procedural issues related to applications for rehearing, PUCO denied OCC’s rehearing request. In October 2024, the OCC filed its Notice of Appeal with the Supreme Court of Ohio. The case is fully briefed, and oral argument is scheduled for October 7, 2025.
Duke Energy Ohio Electric Security Plan
In April 2024, Duke Energy Ohio filed with the PUCO a request for an Electric Security Plan (ESP). The ESP application proposed a three-year term from June 1, 2025, through May 31, 2028, and included continuation of market-based rates for generation supply through competitive procurement processes and continuation and expansion of existing rider mechanisms. Duke Energy Ohio proposed a new rider mechanism relating to electric distribution infrastructure modernization programs, which may be enabled by and partially funded through federal or state funding opportunities, as well as future battery storage projects and two electric vehicle programs. Additional proposals included new rider mechanisms related to solar for all investments for low-income and disadvantaged communities, low-income senior citizen bill assistance, and energy efficiency (EE) and demand-side management programs.
In November 2024, Duke Energy Ohio filed a stipulation that the majority of the intervenors signed as either signatory or non-opposing parties. The stipulation includes the continuation of market-based customer rates for generation supply through competitive procurement auctions and the continuation of all existing riders. It further establishes new caps for certain riders. Duke Energy Ohio also agreed to withdraw its proposals for an infrastructure modernization rider, battery storage projects and electric vehicle programs. The stipulation includes a residential EE program with provisions for low-income customers. On May 14, 2025, PUCO issued its order, approving the stipulation without modification.
On May 15, 2025, the governor of Ohio signed Ohio Substitute House Bill 15 (HB15) into law to be effective on August 14, 2025. HB15 requires electric distribution utilities to file a base rate case every three years, commencing no later than December 31, 2029, and establishes an opportunity to apply for approval of a three-year rate plan with forward-looking test periods to mitigate regulatory lag. HB15 eliminates ESPs and certain distribution-related riders, but allows ESPs approved as of its effective date to remain in place through the end of their authorized term. HB15 also eliminates Duke Energy Ohio's Legacy Generation Rider upon the effective date of HB15 and prevents the PUCO from future reauthorization of similar arrangements. As a result of HB15, future losses related to Duke Energy Ohio's Inter-Company Power Agreement with OVEC will not be recoverable from retail customers. Additionally, regulatory assets related to OVEC as of HB15's effective date may not be recoverable. Regulatory assets related to OVEC were $6 million and $30 million as of June 30, 2025, and December 31, 2024, respectively.
Duke Energy Ohio RTO Adder
On February 24, 2022, the OCC filed a complaint asserting that FERC should reduce the ROE utilized in transmission formulas for Duke Energy Ohio and certain transmission providers by eliminating the 50 basis point adder associated with RTO membership. The OCC contends this is required because Ohio law mandates that transmission owning utilities join an RTO and that the 50 basis point adder is only applicable where RTO membership is voluntary. On December 15, 2022, FERC denied the complaint as it related to Duke Energy Ohio, but granted it for certain other transmission providers. As a result of appeal by certain other transmission providers, the U.S. Court of Appeals for the Sixth Circuit (Sixth Circuit) on January 17, 2025, reversed the prior decision from FERC. In the decision, the Sixth Circuit ruled the 50 basis point adder is available only where RTO membership is voluntary. The decision noted that Ohio law requires Ohio's transmission utilities to be a member of an RTO and therefore it is unlawful for FERC to remove the adder from certain transmission providers but not also remove the adder from Duke Energy Ohio. As a result, the issue was remanded back to FERC to revise their prior decision. As a result of the ruling, Duke Energy Ohio recognized a pre-tax charge during 2025, the results of which were not material. On March 26, 2025, the Sixth Circuit denied requests for rehearing. On April 16, 2025, the Sixth Circuit agreed to stay the mandate pending further appeal to the U.S. Supreme Court. On July 17, 2025, Duke Energy Ohio filed a brief at the U.S. Supreme Court requesting review of the Sixth Circuit's decision.
Duke Energy Kentucky 2022 Electric Base Rate Case
In December 2022, Duke Energy Kentucky filed a rate case with the KPSC driven by capital investments to strengthen the electricity generation and delivery systems along with adjusted depreciation rates for the East Bend and Woodsdale Combustion Turbine (CT) generation stations. Duke Energy Kentucky also requested approval for new programs and tariff updates, including a voluntary community-based renewable subscription program and two electric vehicle charging programs. The KPSC issued an order on October 12, 2023, including a $48 million increase in base revenues, an ROE of 9.75% for electric base rates and 9.65% for electric riders and an equity ratio of 52.145%. New rates went into effect October 13, 2023. Duke Energy Kentucky's request to align the depreciation rates of East Bend with a 2035 retirement date was denied and the KPSC ordered depreciation rates with a 2041 retirement date for the unit. The KPSC approved the request to align depreciation rates of Woodsdale CT with a 2040 retirement date and denied the voluntary community-based renewable subscription program and electric vehicle charging programs.
Revised rates were implemented in August 2024 after a rehearing request. On December 14, 2023, Duke Energy Kentucky filed an appeal with the Franklin County Circuit Court on certain matters for which the KPSC denied rehearing, specifically as it relates to the inclusion of decommissioning costs in depreciation rates for East Bend and Woodsdale. The case is fully briefed. Duke Energy Kentucky is awaiting the scheduling of oral arguments and outcome of the appeal.
Duke Energy Kentucky 2024 Electric Base Rate Case
In December 2024, Duke Energy Kentucky filed a base rate case with the KPSC requesting an annualized increase in electric base rates of approximately $70 million and an ROE of 10.85% with an equity ratio of 52.728%. This is an overall average customer rate increase of approximately 14.7%. The request for the rate increase is driven by capital investments to strengthen the electricity generation and delivery systems. The evidentiary hearing occurred in May 2025. New rates went into effect on July 3, 2025, subject to refund. An order is expected by October 3, 2025.
Duke Energy Kentucky 2025 Natural Gas Base Rate Case
On June 2, 2025, Duke Energy Kentucky filed a base rate case with the KPSC requesting an annualized increase in natural gas base rates of approximately $26 million and an ROE of 10.75% with an equity ratio of 52.649%. This is an overall average customer rate increase of approximately 17%. The request for the rate increase is driven by capital investments to strengthen the natural gas delivery system. An evidentiary hearing is scheduled for October 28, 2025. New rates are anticipated to go into effect around January 2, 2026.
Duke Energy Indiana
Indiana Coal Ash Recovery
In Duke Energy Indiana’s 2019 rate case, the IURC opened a subdocket for post-2018 coal ash related expenditures. In April 2020, Duke Energy Indiana filed testimony in the coal ash subdocket requesting recovery for post-2018 coal ash basin closure costs associated with closure plans that were approved by the Indiana Department of Environmental Management (IDEM) at that time as well as continued deferral approval and carrying costs on the balance of such coal ash basin closure costs. On November 3, 2021, the IURC issued an order allowing recovery of the post-2018 coal ash basin closure costs, as well as continuing deferral, with carrying costs on the balance. The OUCC and the Duke Industrial Group appealed. The Indiana Court of Appeals issued its opinion on February 21, 2023, reversing the IURC's order to the extent that it allowed Duke Energy Indiana to recover federally mandated costs incurred prior to the IURC's November 3, 2021 order. In addition, the court found that any costs incurred pre-petition to determine federally mandated compliance options were not specifically authorized by the statute and should also be disallowed.
In 2023, Duke Energy Indiana filed its proposal to remove from rates certain costs incurred prior to the IURC's November 3, 2021 order date. On September 20, 2023, the IURC approved Duke Energy Indiana's proposal to remove the costs from its rates and assessed simple interest on the refunds at a rate of 4.71%, beginning from when the costs were initially recovered from customers. In the 2024 Indiana Rate Case, Duke Energy Indiana included a request to recover the pre-order costs denied by the Indiana Court of Appeals and certain future coal ash closure costs as part of depreciation costs. The IURC's January 29, 2025 order in the 2024 Indiana Rate Case denied recovery of the pre-order costs previously denied by the Indiana Court of Appeals but approved the recovery of certain future coal ash closure costs as part of depreciation costs.
In 2023, Duke Energy Indiana filed a petition under the amended version of the federal mandate statute for additional post-2018 coal ash closure costs for the remaining basins not included in the Indiana coal ash recovery case from 2020. On May 8, 2024, the IURC issued a CPCN and approved these coal ash related compliance projects as federally mandated compliance projects. In June 2024, the Citizens Action Coalition of Indiana (CAC) filed a notice of appeal of the IURC's order. Briefing was completed in January 2025, and Duke Energy Indiana is awaiting an opinion from the appellate court.
TDSIC 2.0
In November 2021, Duke Energy Indiana filed for approval of the Transmission, Distribution, Storage Improvement Charge 2.0 investment plan for 2023-2028 (TDSIC 2.0). On June 15, 2022, the IURC approved, without modification, TDSIC 2.0, which includes approximately $2 billion in transmission and distribution investments selected to improve customer reliability, harden and improve resiliency of the grid, enable expansion of renewable and distributed energy projects and encourage economic development. In July 2022, the OUCC filed a notice of appeal to the Indiana Court of Appeals in Duke Energy Indiana’s TDSIC 2.0 proceeding. The Indiana Court of Appeals issued its opinion on March 9, 2023, affirming the IURC’s order in its entirety. The Duke Industrial Group filed a petition to transfer to the Indiana Supreme Court. On December 19, 2024, the Indiana Supreme Court affirmed the Indiana Court of Appeals decision, concluding there was substantial evidence that the IURC's conclusion was reasonable and the TDSIC 2.0 plan met the statutory requirements. On January 21, 2025, the Duke Industrial Group filed a motion for rehearing. On March 4, 2025, the Indiana Supreme Court denied the Duke Industrial Group's petition for rehearing. There can be no further appeals on TDSIC 2.0 and this matter is now fully resolved.
2024 Indiana Rate Case
In April 2024, Duke Energy Indiana filed an application with the IURC for a rate increase for retail customers. The request for rate increase was driven by $1.6 billion in investments made since the last general rate case filed in 2019 in order to reliably serve customers, improve resiliency of the system, and advance environmental sustainability.
An order for the rate case was issued by the IURC on January 29, 2025, and revised February 3, 2025, which authorized an ROE of 9.75%, an equity ratio of 53% and an annual revenue increase of $296 million. Based on review of these orders, Duke Energy Indiana identified an inconsistency in the calculation of operating revenues before the effect of trackers. On February 7, 2025, Duke Energy Indiana made a compliance filing in accordance with the IURC's findings in its order and addressed the identified inconsistencies. The compliance filing also clarified the annual revenue increase was approximately $385 million. On February 18, 2025, one industrial customer submitted a filing requesting the IURC to clarify its revenue allocation in these proceedings, which was denied by the Commission on April 16, 2025. On February 25, 2025, the IURC approved Duke Energy Indiana’s compliance filing and new rates were implemented February 27, 2025. The industrial customer filed a notice of appeal on February 28, 2025, regarding cost of service allocation. On April 9, 2025, the IURC issued an order clarifying the intent of its January 29, 2025 order regarding the rate migration adjustment, resulting in revised rates that were effective on May 19, 2025. On May 14, 2025, the industrial customer filed a motion to dismiss its appeal, and on May 20, 2025, the Indiana Court of Appeals granted the industrial customer's motion to dismiss. This matter is now fully resolved.
Cayuga Combined Cycle CPCN
On February 13, 2025, Duke Energy Indiana filed for a CPCN seeking approval to construct two 1x1 CC natural gas-fired units with a combined winter rating of 1,476 MW. The Cayuga CC Project is proposed to be constructed on the same site as the retiring Cayuga coal-fired steam units with a winter rating of 1,005 MW. The Cayuga CC Project will result in an incremental 471 MW for the Duke Energy Indiana system and will allow Duke Energy Indiana to avoid expected maintenance and environmental compliance costs needed for the coal units to continue operating. The estimated cost of the Cayuga CC project is approximately $3.3 billion, plus actual AFUDC. Duke Energy Indiana has proposed recovery of certain facility costs during construction, including AFUDC, through construction work in progress ratemaking via a proposed generation cost adjustment tracker mechanism. The estimated average retail rate impact during construction and initial in-service periods from April 2026 through May 2031 is approximately 5.4%. Duke Energy Indiana expects CC 1 to be placed in service in 2029 and CC 2 to be placed in service in 2030. A final air permit was issued by IDEM on March 5, 2025. On June 17, 2025, Duke Energy Indiana entered into a settlement agreement with one of the parties in this proceeding to conduct a study evaluating the feasibility of third-party operation of the Cayuga coal units. On July 11, 2025, Duke Energy Indiana entered into a settlement agreement with an additional party in this proceeding agreeing to the need of the units and addressing accounting and ratemaking components. Neither agreement alters the underlying plans in the pending CPCN application. An evidentiary hearing is scheduled for August 21, 2025. An order is expected in the fourth quarter of 2025.
v3.25.2
Commitments and Contingencies
 6 Months Ended
Jun. 30, 2025
Commitments and Contingencies Disclosure [Abstract]  
Commitments and Contingencies COMMITMENTS AND CONTINGENCIES
ENVIRONMENTAL
The Duke Energy Registrants are subject to federal, state and local regulations regarding air and water quality, hazardous and solid waste disposal, coal ash and other environmental matters. These regulations can be changed from time to time, imposing new obligations on the Duke Energy Registrants. The following environmental matters impact all Duke Energy Registrants.
Remediation Activities
In addition to Asset Retirement Obligations recorded as a result of various environmental regulations, the Duke Energy Registrants are responsible for environmental remediation at various sites. These include certain properties that are part of ongoing operations and sites formerly owned or used by Duke Energy entities. These sites are in various stages of investigation, remediation and monitoring. Managed in conjunction with relevant federal, state and local agencies, remediation activities vary based on site conditions and location, remediation requirements, complexity and sharing of responsibility. If remediation activities involve joint and several liability provisions, strict liability, or cost recovery or contribution actions, the Duke Energy Registrants could potentially be held responsible for environmental impacts caused by other potentially responsible parties and may also benefit from insurance policies or contractual indemnities that cover some or all cleanup costs. Liabilities are recorded when losses become probable and are reasonably estimable. The total costs that may be incurred cannot be estimated because the extent of environmental impact, allocation among potentially responsible parties, remediation alternatives and/or regulatory decisions have not yet been determined at all sites. Additional costs associated with remediation activities are likely to be incurred in the future and could be significant. Costs are typically expensed as Operation, maintenance and other on the Condensed Consolidated Statements of Operations unless regulatory recovery of the costs is deemed probable.
The following table contains information regarding reserves for probable and estimable costs related to the various environmental sites. These reserves are recorded in Accounts Payable within Other Current Liabilities and Other within Other Noncurrent Liabilities on the Condensed Consolidated Balance Sheets.
(in millions)June 30, 2025December 31, 2024
Reserves for Environmental Remediation
Duke Energy$73 $73 
Duke Energy Carolinas32 24 
Progress Energy19 19 
Duke Energy Progress9 9 
Duke Energy Florida10 10 
Duke Energy Ohio14 21 
Duke Energy Indiana2 2 
Piedmont6 7 
Additional losses in excess of recorded reserves that could be incurred for the stages of investigation, remediation and monitoring for environmental sites that have been evaluated at this time are not material.
LITIGATION
For open litigation, unless otherwise noted, Duke Energy and the Subsidiary Registrants cannot predict the outcome or ultimate resolution of their respective matters.
Duke Energy
Mooresville Coal Ash Class Action Litigation
On December 20, 2024, 15 plaintiffs filed a lawsuit in Iredell County, North Carolina, against Duke Energy (Parent), Duke Energy Carolinas and Duke Energy Progress (collectively “Duke Energy”) on behalf of a putative class alleging past and ongoing environmental contamination in the Mooresville area of North Carolina. The lawsuit alleges that Duke Energy disposed of and sold coal ash as structural fill resulting in the contamination of soil, groundwater and Lake Norman. The plaintiffs claim that Duke Energy failed to properly remediate the contamination and continues to pollute, and they assert that the contamination has negatively impacted property values and led to elevated cancer rates and other health issues. The plaintiffs are seeking unspecified compensatory and punitive damages, injunctive relief to stop further contamination, remediation of contaminated areas and attorneys' fees and costs. On July 28, 2025, the plaintiffs filed an Amended Complaint, which asserts claims for negligence, negligence per se, gross negligence, private nuisance, strict liability for ultra-hazardous activities and trespass. Duke Energy's deadline to respond to the Amended Complaint is September 11, 2025. Duke Energy has informed the plaintiffs and the court that it intends to file a motion to dismiss. A hearing on the motion to dismiss is scheduled for December 15, 2025.
Nuclear Compensation Class Action Litigation
On July 11, 2025, plaintiffs Leo Dorrell and John Dunn filed a putative class action lawsuit in the U.S. District Court for the District of Maryland against all U.S. commercial nuclear power operators, including Duke Energy Corporation (Parent) and Progress Energy. The plaintiffs allege that the nuclear power industry engaged in a conspiracy to suppress compensation by exchanging salary information since 2003, in violation of Section 1 of the Sherman Act. Although not named as defendants, other entities are accused of having participated in the plaintiff's alleged conspiracy, including Duke Energy Carolinas and Duke Energy Progress. The lawsuit seeks unspecified monetary damages, including treble damages, on behalf of current and former employees in the nuclear power industry as well as injunctive relief. Duke Energy is evaluating the claims and intends to vigorously defend this lawsuit. A Consent Motion was filed on August 4, 2025, setting the briefing schedule in the case. The defendants' response to the complaint is due on October 15, 2025.
Duke Energy Carolinas
NTE Carolinas II, LLC Litigation
In November 2017, Duke Energy Carolinas entered into a standard FERC large generator interconnection agreement (LGIA) with NTE Carolinas II, LLC (NTE), a company that proposed to build a combined-cycle natural gas plant in Rockingham County, North Carolina. In September 2019, Duke Energy Carolinas filed a lawsuit in Mecklenburg County Superior Court against NTE for breach of contract, alleging that NTE's failure to pay benchmark payments for Duke Energy Carolinas' transmission system upgrades required under the interconnection agreement constituted a termination of the interconnection agreement. Duke Energy Carolinas sought a monetary judgment against NTE because NTE failed to make multiple milestone payments. The lawsuit was moved to federal court in North Carolina. NTE filed a motion to dismiss Duke Energy Carolinas’ complaint and brought counterclaims alleging anti-competitive conduct and violations of state and federal statutes. Duke Energy Carolinas filed a motion to dismiss NTE's counterclaims. Both NTE's and Duke Energy Carolinas' motions to dismiss were subsequently denied by the court.
On May 21, 2020, in response to a NTE petition challenging Duke Energy Carolinas' termination of the LGIA, FERC issued a ruling that 1) it has exclusive jurisdiction to determine whether a transmission provider may terminate an LGIA; 2) FERC approval is required to terminate a conforming LGIA if objected to by the interconnection customer; and 3) Duke Energy may not announce the termination of a conforming LGIA unless FERC has approved the termination. FERC's Office of Enforcement also initiated an investigation of Duke Energy Carolinas into matters pertaining to the LGIA. In April 2023, Duke Energy Carolinas received notice from the FERC Office of Enforcement that they have closed their non-public investigation with no further action recommended.
Following completion of discovery, Duke Energy Carolinas filed a motion for summary judgment seeking a ruling in its favor as to some of its affirmative claims against NTE and to all of NTE’s counterclaims. On June 24, 2022, the court issued an order partially granting Duke Energy Carolinas' motion by dismissing NTE's counterclaims that Duke Energy Carolinas engaged in anti-competitive behavior in violation of state and federal statutes. In October 2022, the parties executed a settlement agreement with respect to the remaining breach of contract claims in the litigation and a Stipulation of Dismissal was filed with the court.
In November 2022, NTE filed its Notice of Appeal to the U.S. Court of Appeals for the Fourth Circuit as to the district court's summary judgment ruling in Duke Energy Carolinas' favor on NTE's antitrust and unfair competition claims. On August 5, 2024, the U.S. Court of Appeals for the Fourth Circuit reversed the district court's grant of summary judgment and remanded the case back to the district court for further proceedings. In August 2024, Duke Energy Carolinas filed a petition for rehearing, which was denied on November 26, 2024. On February 21, 2025, Duke Energy Carolinas filed a petition seeking review by the U.S. Supreme Court. On June 2, 2025, the U.S. Supreme Court invited the Solicitor General to file a brief reflecting the views of the U.S. as it relates to this matter.
Asbestos-related Injuries and Damages Claims
Duke Energy Carolinas has experienced numerous claims for indemnification and medical cost reimbursement related to asbestos exposure. These claims relate to damages for bodily injuries alleged to have arisen from exposure to or use of asbestos in connection with construction and maintenance activities conducted on its electric generation plants prior to 1985.
Duke Energy Carolinas has recognized asbestos-related reserves of $379 million at June 30, 2025, and $396 million at December 31, 2024. These reserves are classified in Other within Other Noncurrent Liabilities and Other within Current Liabilities on the Condensed Consolidated Balance Sheets. These reserves are based on Duke Energy Carolinas' best estimate for current and future asbestos claims through 2044 and are recorded on an undiscounted basis. In light of the uncertainties inherent in a longer-term forecast, management does not believe they can reasonably estimate the indemnity and medical costs that might be incurred after 2044 related to such potential claims. It is possible Duke Energy Carolinas may incur asbestos liabilities in excess of the recorded reserves.
Duke Energy Carolinas has third-party insurance to cover certain losses related to asbestos-related injuries and damages above an aggregate self-insured retention. Receivables for insurance recoveries were $540 million at June 30, 2025, and $539 million at December 31, 2024. These amounts are classified in Other within Other Noncurrent Assets and Receivables within Current Assets on the Condensed Consolidated Balance Sheets. Any future payments up to the policy limit will be reimbursed by the third-party insurance carrier. Duke Energy Carolinas is not aware of any uncertainties regarding the legal sufficiency of insurance claims. Duke Energy Carolinas believes the insurance recovery asset is probable of recovery as the insurance carrier continues to have a strong financial strength rating.
The reserve for credit losses for insurance receivables is $9 million as of June 30, 2025, and December 31, 2024, for both Duke Energy and Duke Energy Carolinas. The insurance receivable is evaluated based on the risk of default and the historical losses, current conditions and expected conditions around collectability. Management evaluates the risk of default annually based on payment history, credit rating and changes in the risk of default from credit agencies.
Duke Energy Indiana
Coal Ash Insurance Coverage Litigation
In June 2022, Duke Energy Indiana filed a civil action in Indiana Superior Court against various insurance companies seeking declaratory relief with respect to insurance coverage for coal combustion residuals-related expenses and liabilities covered by third-party liability insurance policies. The insurance policies cover the 1969-1972 and 1984-1985 periods and provide third-party liability insurance for claims and suits alleging property damage, bodily injury and personal injury (or a combination thereof). In June 2024, Duke Energy Indiana filed an amended complaint adding several additional insurance companies as defendants to the litigation. During 2023 through 2025, Duke Energy Indiana reached confidential settlements with various insurance companies, the results of which were not material to Duke Energy. All settlement payments have been received and the case has been dismissed. In July 2025, Duke Energy Indiana began refunding retail customers their share of coal ash insurance settlement proceeds, after expenses, over one year.
Other Litigation and Legal Proceedings
The Duke Energy Registrants are involved in other legal, tax and regulatory proceedings arising in the ordinary course of business, some of which involve significant amounts. The Duke Energy Registrants believe the final disposition of these proceedings will not have a material effect on their results of operations, cash flows or financial position. Reserves are classified on the Condensed Consolidated Balance Sheets in Other within Other Noncurrent Liabilities and Other within Current Liabilities.
OTHER COMMITMENTS AND CONTINGENCIES
General
As part of their normal business, the Duke Energy Registrants are party to various financial guarantees, performance guarantees and other contractual commitments to extend guarantees of credit and other assistance to various subsidiaries, investees and other third parties. These guarantees involve elements of performance and credit risk, which are not fully recognized on the Condensed Consolidated Balance Sheets and have uncapped maximum potential payments. However, the Duke Energy Registrants do not believe these guarantees will have a material effect on their results of operations, cash flows or financial position.
In addition, the Duke Energy Registrants enter into various fixed-price, non-cancelable commitments to purchase or sell power or natural gas, take-or-pay arrangements, transportation, or throughput agreements and other contracts that may or may not be recognized on their respective Condensed Consolidated Balance Sheets. Some of these arrangements may be recognized at fair value on their respective Condensed Consolidated Balance Sheets if such contracts meet the definition of a derivative and the NPNS exception does not apply. In most cases, the Duke Energy Registrants’ purchase obligation contracts contain provisions for price adjustments, minimum purchase levels and other financial commitments.
v3.25.2
Debt and Credit Facilities
 6 Months Ended
Jun. 30, 2025
Debt Disclosure [Abstract]  
Debt and Credit Facilities DEBT AND CREDIT FACILITIES
SUMMARY OF SIGNIFICANT DEBT ISSUANCES
The following table summarizes significant debt issuances (in millions).
Six Months Ended June 30, 2025
Duke DukeDukeDukeDukeDuke
MaturityInterestDukeEnergyEnergyEnergyEnergy EnergyEnergy
Issuance DateDateRateEnergy(Parent)CarolinasProgressFloridaOhioIndianaPiedmont
First Mortgage Bonds
January 2025(a)
March 2030
4.85 %$400 $— $400 $— $— $— $— $— 
January 2025(a)
March 2035
5.25 %700 — 700 — — — — — 
March 2025(b)
March 2027
4.35 %500 — — 500 — — — — 
March 2025(b)
March 2035
5.05 %850 — — 850 — — — — 
March 2025(b)
March 2055
5.55 %750 — — 750 — — — — 
May 2025(c)
May 2055
5.90 %300 — — — — — 300 — 
June 2025(d)
June 2035
5.30 %350 — — — — 350 — — 
Total issuances$3,850 $— $1,100 $2,100 $— $350 $300 $— 
(a)Proceeds were used to pay off the $500 million DERF accounts receivable securitization facility due January 2025, to pay off short-term debt and for general company purposes.
(b)Proceeds were used to pay off the $400 million DEPR accounts receivable securitization facility due April 2025, to pay off short-term debt and for general company purposes.
(c)Proceeds were used to pay down short-term debt and for general company purposes.
(d)Proceeds were used to pay off $150 million of maturities due June 2025, to pay off short-term debt and for general corporate purposes.
In June 2025, Duke Energy Kentucky priced an aggregate principal amount of $150 million senior unsecured debentures ("the debentures") through a private placement offering. The debentures are expected to be issued on August 12, 2025, and will be split across three tranches, $68 million with a coupon of 5.41% maturing September 2030, $43 million with a coupon of 6.01% maturing September 2035 and $40 million with a coupon of 6.11% maturing September 2037. Proceeds will be used to repay $95 million of maturities due October 2025, $45 million of maturities due January 2026, pay down short-term debt and for general corporate purposes.
CURRENT MATURITIES OF LONG-TERM DEBT
The following table shows the significant components of Current maturities of long-term debt on the Condensed Consolidated Balance Sheets. The Duke Energy Registrants currently anticipate satisfying these obligations with cash on hand and proceeds from additional borrowings.
(in millions)Maturity DateInterest RateJune 30, 2025
Unsecured Debt
Duke Energy (Parent)September 20250.900 %650 
Piedmont
September 20253.600 %150 
Duke Energy Florida Term Loan Facility(a)
October 20255.071 %800 
Duke Energy Ohio(b)
October 20253.230 %95 
Duke Energy (Parent)December 20255.000 %500 
Duke Energy (Parent) Convertible Senior Notes
April 20264.125 %1,725 
First Mortgage Bonds
Duke Energy Florida(a)(c)
October 2073
4.009 %200 
Duke Energy Florida(a)(c)
April 20744.009 %173 
Duke Energy ProgressAugust 20253.250 %500 
Other(d)
253 
Current maturities of long-term debt$5,046 
(a)Debt has a floating interest rate.
(b)Current maturity relates to Duke Energy Kentucky.
(c)These first mortgage bonds are classified as Current maturities of long-term debt on the Condensed Consolidated Balance Sheets based on terms of the indentures, which could require repayment in less than 12 months if exercised by the bondholders.
(d)Includes finance lease obligations, amortizing debt, tax-exempt bonds with mandatory put options and small bullet maturities.
AVAILABLE CREDIT FACILITIES
Master Credit Facility
In March 2025, Duke Energy extended the termination date of its existing Master Credit Facility to March 2030 and increased its capacity from $9 billion to $10 billion. The Duke Energy Registrants, excluding Progress Energy, have borrowing capacity under the Master Credit Facility up to a specified sublimit for each borrower. Duke Energy has the unilateral ability at any time to increase or decrease the borrowing sublimits of each borrower, subject to a maximum sublimit for each borrower. The amount available under the Master Credit Facility has been reduced to backstop issuances of commercial paper, certain letters of credit and variable-rate demand tax-exempt bonds that may be put to the Duke Energy Registrants at the option of the holder.
The table below includes the current borrowing sublimits and available capacity under these credit facilities.
June 30, 2025
DukeDukeDukeDukeDukeDuke
DukeEnergyEnergyEnergyEnergyEnergyEnergy
(in millions)Energy(Parent)CarolinasProgressFloridaOhioIndianaPiedmont
Facility size(a)
$10,000 $3,925 $1,000 $1,125 $1,150 $950 $800 $1,050 
Reduction to backstop issuances
Commercial paper(b)
(3,017)(2,385)(300)(150)(1)(26)(150)(5)
Outstanding letters of credit(14)(2)(4)(1)(7)— — — 
Tax-exempt bonds(81)— — — — — (81)— 
Available capacity under the Master Credit Facility$6,888 $1,538 $696 $974 $1,142 $924 $569 $1,045 
(a)Represents the sublimit of each borrower.
(b)Duke Energy issued $625 million of commercial paper and loaned the proceeds through the money pool to Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana. The balances are classified as Long-Term Debt Payable to Affiliated Companies on the Condensed Consolidated Balance Sheets.
Duke Energy Term Loan Facility
Duke Energy (Parent) had a $1 billion revolving credit facility, which was terminated in March 2022 (Three-Year Revolving Credit Facility). In March 2022, Duke Energy (Parent) entered into a Term Loan Credit Facility (facility) with commitments totaling $1.4 billion maturing March 2024. Borrowings under the facility were used to repay amounts drawn under the Three-Year Revolving Credit Facility prior to its termination and for general corporate purposes, including repayment of a portion of Duke Energy's outstanding commercial paper. In December 2022, Duke Energy (Parent) repaid $400 million of the facility. In January 2024, Duke Energy (Parent) repaid the remaining $1 billion outstanding on the facility.
Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida Term Loan Facilities
In November 2024, Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida entered into term loan facilities intended to meet incremental financing needs resulting from expenditures for the restoration of service and rebuilding of infrastructure related to hurricanes Debby, Helene and Milton as described in Note 4. Duke Energy Carolinas and Duke Energy Progress entered into two-year term loan facilities with commitments totaling $700 million and $250 million, respectively. Duke Energy Florida entered into a 364-day term loan facility with commitments totaling $800 million. Amounts were available to be drawn for six months from the Duke Energy Carolinas and Duke Energy Progress term loan facilities and for four months from the Duke Energy Florida term loan facility. Borrowings from the term loan facilities can be prepaid at any time and may be used to fund system restoration expenses and for general corporate purposes. Additionally, the Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida term loan facilities included an option to be increased by $300 million, $150 million and $400 million, respectively.
In the fourth quarter of 2024, $455 million and $185 million were drawn under the term loan facilities for Duke Energy Carolinas and Duke Energy Progress, respectively, which were both classified as Long-Term Debt on the Consolidated Balance Sheets as of December 31, 2024. Through December 2024, $100 million was drawn under the term loan facility for Duke Energy Florida, which was classified as Current maturities of long-term debt on the Consolidated Balance Sheets as of December 31, 2024.
In the first quarter of 2025, an additional $145 million, $65 million and $700 million were drawn under the term loan facilities for Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, respectively. In April 2025, Duke Energy Carolinas drew the remaining $100 million on its term loan facility.
As of June 30, 2025, total borrowings under the term loan facilities of $700 million for Duke Energy Carolinas and $250 million for Duke Energy Progress were classified as Long-Term Debt and total borrowings under the term loan facility of $800 million for Duke Energy Florida were classified as Current maturities of long-term debt on the Condensed Consolidated Balance Sheets.
v3.25.2
Goodwill
 6 Months Ended
Jun. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill GOODWILL
Duke Energy
Duke Energy's Goodwill balance of $19.3 billion is allocated $17.4 billion to EU&I and $1.9 billion to GU&I on Duke Energy's Condensed Consolidated Balance Sheets at June 30, 2025, and December 31, 2024. There are no accumulated impairment charges.
Duke Energy Ohio
Duke Energy Ohio's Goodwill balance of $920 million, allocated $596 million to EU&I and $324 million to GU&I, is presented net of accumulated impairment charges of $216 million on the Condensed Consolidated Balance Sheets at June 30, 2025, and December 31, 2024.
Progress Energy
Progress Energy's Goodwill is included in the EU&I segment and there are no accumulated impairment charges.
Piedmont
Piedmont's Goodwill is included in the GU&I segment and there are no accumulated impairment charges.
v3.25.2
Related Party Transactions
 6 Months Ended
Jun. 30, 2025
Related Party Transactions [Abstract]  
Related Party Transactions RELATED PARTY TRANSACTIONS
The Subsidiary Registrants engage in related party transactions in accordance with applicable state and federal commission regulations. Refer to the Condensed Consolidated Balance Sheets of the Subsidiary Registrants for balances due to or due from related parties. Transactions with related parties included on the Condensed Consolidated Statements of Operations and Comprehensive Income are presented in the following table.
Three Months Ended June 30,Six Months Ended June 30,
(in millions)2025202420252024
Duke Energy Carolinas
Corporate governance and shared service expenses(a)
$157 $189 $335 $403 
Indemnification coverages(b)
14 11 27 22 
JDA revenue(c)
8 6 90 22 
JDA expense(c)
71 53 187 93 
Intercompany natural gas purchases(d)
2 5 4 9 
Progress Energy
Corporate governance and shared service expenses(a)
$141 $171 $291 $359 
Indemnification coverages(b)
16 15 32 29 
JDA revenue(c)
71 53 187 93 
JDA expense(c)
8 6 90 22 
Intercompany natural gas purchases(d)
19 18 38 37 
Duke Energy Progress
Corporate governance and shared service expenses(a)
$81 $100 $167 $214 
Indemnification coverages(b)
6 6 13 12 
JDA revenue(c)
71 53 187 93 
JDA expense(c)
8 6 90 22 
Intercompany natural gas purchases(d)
19 18 38 37 
Duke Energy Florida
Corporate governance and shared service expenses(a)
$60 $71 $124 $145 
Indemnification coverages(b)
10 9 19 17 
Duke Energy Ohio
Corporate governance and shared service expenses(a)
$70 $77 $134 $154 
Indemnification coverages(b)
2 1 3 3 
Duke Energy Indiana
Corporate governance and shared service expenses(a)
$73 $83 $144 $185 
Indemnification coverages(b)
3 3 5 5 
Piedmont
Corporate governance and shared service expenses(a)
$36 $40 $67 $81 
Indemnification coverages(b)
2 1 3 2 
Intercompany natural gas sales(d)
21 23 42 46 
Natural gas storage and transportation costs(e)
5 6 11 12 
(a)The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared services costs, primarily related to human resources, employee benefits, information technology, legal and accounting fees, as well as other third-party costs. These amounts are primarily recorded in Operation, maintenance and other and Impairment of assets and other charges on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(b)The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(c)Duke Energy Carolinas and Duke Energy Progress participate in a JDA, which allows the collective dispatch of power plants between the service territories to reduce customer rates. Revenues from the sale of power and expenses from the purchase of power pursuant to the JDA are recorded in Operating Revenues and Fuel used in electric generation and purchased power, respectively, on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(d)Piedmont provides long-term natural gas delivery service to certain Duke Energy Carolinas and Duke Energy Progress natural gas-fired generation facilities. Piedmont records the sales in Operating Revenues, and Duke Energy Carolinas and Duke Energy Progress record the related purchases as a component of Fuel used in electric generation and purchased power on their respective Condensed Consolidated Statements of Operations and Comprehensive Income.
(e)Piedmont has related party transactions as a customer of its equity method investments in Pine Needle LNG Company, LLC, Hardy Storage Company, LLC and Cardinal Pipeline Company, LLC natural gas storage and transportation facilities. These expenses are included in Cost of natural gas on Piedmont's Condensed Consolidated Statements of Operations and Comprehensive Income.
In addition to the amounts presented above, the Subsidiary Registrants have other affiliate transactions, including rental of office space, participation in a money pool arrangement, other operational transactions and their proportionate share of certain charged expenses. These transactions of the Subsidiary Registrants are incurred in the ordinary course of business and are eliminated in consolidation.
As discussed in Note 12, certain trade receivables were previously sold by Duke Energy Ohio and Duke Energy Indiana to CRC, an affiliate formed by a subsidiary of Duke Energy. The proceeds obtained from the sales of receivables were largely cash but included a subordinated note from CRC for a portion of the purchase price. In March 2024, Duke Energy repaid all outstanding CRC borrowings and terminated the related CRC credit facility.
Intercompany Income Taxes
Duke Energy and the Subsidiary Registrants file a consolidated federal income tax return and other state and jurisdictional returns. The Subsidiary Registrants have a tax sharing agreement with Duke Energy for the allocation of consolidated tax liabilities and benefits. Income taxes recorded represent amounts the Subsidiary Registrants would incur as separate C-Corporations. The following table includes the balance of intercompany income tax receivables and payables for the Subsidiary Registrants.
DukeDukeDukeDukeDuke
EnergyProgressEnergyEnergyEnergyEnergy
(in millions)CarolinasEnergyProgressFloridaOhioIndianaPiedmont
June 30, 2025
Intercompany income tax receivable$— $— $16 $— $— $— $45 
Intercompany income tax payable$85 $119 $— $153 $15 $27 $— 
December 31, 2024
Intercompany income tax receivable$— $— $— $154 $— $— $— 
Intercompany income tax payable419 169 315 — 43 110 43 
v3.25.2
Derivatives and Hedging
 6 Months Ended
Jun. 30, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Derivatives and Hedging DERIVATIVES AND HEDGING
The Duke Energy Registrants use commodity, interest rate and foreign currency contracts to manage commodity price risk, interest rate risk and foreign currency exchange rate risk. The primary use of commodity derivatives is to hedge the generation portfolio against changes in the prices of electricity and natural gas. Piedmont enters into natural gas supply contracts to provide diversification, reliability and natural gas cost benefits to its customers. Interest rate derivatives are used to manage interest rate risk associated with borrowings. Foreign currency derivatives are used to manage risk related to foreign currency exchange rates on certain issuances of debt.
All derivative instruments not identified as NPNS are recorded at fair value as assets or liabilities on the Condensed Consolidated Balance Sheets. Cash collateral related to derivative instruments executed under master netting arrangements is offset against the collateralized derivatives on the Condensed Consolidated Balance Sheets. The cash impacts of settled derivatives are recorded as operating activities on the Condensed Consolidated Statements of Cash Flows.
INTEREST RATE RISK
The Duke Energy Registrants are exposed to changes in interest rates as a result of their issuance or anticipated issuance of variable-rate and fixed-rate debt and commercial paper. Interest rate risk is managed by limiting variable-rate exposures to a percentage of total debt and by monitoring changes in interest rates. To manage risk associated with changes in interest rates, the Duke Energy Registrants may enter into interest rate swaps, U.S. Treasury lock agreements and other financial contracts. In anticipation of certain fixed-rate debt issuances, a series of forward-starting interest rate swaps or Treasury locks may be executed to lock in components of current market interest rates. These instruments are later terminated prior to or upon the issuance of the corresponding debt.
Cash Flow Hedges
For a derivative designated as hedging the exposure to variable cash flows of a future transaction, referred to as a cash flow hedge, the effective portion of the derivative's gain or loss is initially reported as a component of other comprehensive income and subsequently reclassified into earnings once the future transaction impacts earnings. Amounts for interest rate contracts are reclassified to earnings as interest expense over the term of the related debt. Gains and losses reclassified out of accumulated other comprehensive income (loss) for the three and six months ended June 30, 2025, and 2024, were not material. Duke Energy's interest rate derivatives designated as hedges include forward-starting interest rate swaps not accounted for under regulatory accounting.
Undesignated Contracts
Undesignated contracts primarily include contracts not designated as a hedge because they are accounted for under regulatory accounting or contracts that do not qualify for hedge accounting.
Duke Energy’s interest rate swaps for its regulated operations employ regulatory accounting. With regulatory accounting, the mark-to-market gains or losses on the swaps are deferred as regulatory liabilities or regulatory assets, respectively. Regulatory assets and liabilities are amortized consistent with the treatment of the related costs in the ratemaking process. The accrual of interest on the swaps is recorded as Interest Expense on the Duke Energy Registrant's Condensed Consolidated Statements of Operations and Comprehensive Income.
The following tables show notional amounts of outstanding derivatives related to interest rate risk.
June 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaIndianaOhio
Cash flow hedges$3,225 $— $— $— $— $— $— 
Undesignated contracts4,027 1,875 1,800 600 1,200 325 27 
Total notional amount$7,252 $1,875 $1,800 $600 $1,200 $325 $27 
December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaIndianaOhio
Cash flow hedges$2,825 $— $— $— $— $— $— 
Undesignated contracts3,202 1,150 1,775 1,125 650 250 27 
Total notional amount$6,027 $1,150 $1,775 $1,125 $650 $250 $27 
COMMODITY PRICE RISK
The Duke Energy Registrants are exposed to the impact of changes in the prices of electricity purchased and sold in bulk power markets and natural gas purchases, including Piedmont's natural gas supply contracts. Exposure to commodity price risk is influenced by a number of factors including the term of contracts, the liquidity of markets and delivery locations. To manage risk associated with commodity prices, the Duke Energy Registrants may enter into long-term power purchase or sales contracts and long-term natural gas supply agreements.
Undesignated Contracts
For the Subsidiary Registrants, bulk power electricity and natural gas purchases flow through fuel adjustment clauses, formula-based contracts or other cost-sharing mechanisms. Differences between the costs included in rates and the incurred costs, including undesignated derivative contracts, are largely deferred as regulatory assets or regulatory liabilities. Piedmont policies allow for the use of financial instruments to hedge commodity price risks. The strategy and objective of these hedging programs are to use the financial instruments to reduce natural gas cost volatility for customers.
Volumes
The tables below include volumes of outstanding commodity derivatives. Amounts disclosed represent the absolute value of notional volumes of commodity contracts excluding NPNS. The Duke Energy Registrants have netted contractual amounts where offsetting purchase and sale contracts exist with identical delivery locations and times of delivery. Where all commodity positions are perfectly offset, no quantities are shown.
June 30, 2025
DukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergy
EnergyCarolinasEnergyProgressOhioIndianaPiedmont
Electricity (GWh)24,145 — — — 3,000 21,145 — 
Natural gas (millions of dekatherms)778 290 255 255 — 27 206 
December 31, 2024
DukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergy
EnergyCarolinasEnergyProgressOhioIndianaPiedmont
Electricity (GWh)12,229 — — — 1,287 10,942 — 
Natural gas (millions of dekatherms)779 276 246 246 — 32 225 
FOREIGN CURRENCY RISK
Duke Energy may enter into foreign currency derivatives to hedge exposure to changes in foreign currency exchange rates, such as that arising from the issuance of debt denominated in a currency other than U.S. dollars.
Fair Value Hedges
Derivatives related to existing fixed-rate securities are accounted for as fair value hedges, where the derivatives’ fair value gains or losses and hedged items’ fair value gains or losses are both recorded directly to earnings on the same income statement line item, including foreign currency gains or losses arising from changes in the U.S. currency exchange rates. Duke Energy has elected to exclude the cross-currency basis spread from the assessment of effectiveness in the fair value hedges of its foreign currency risk and record any difference between the change in the fair value of the excluded components and the amounts recognized in earnings as a component of other comprehensive income or loss.
The following table shows Duke Energy's outstanding derivatives related to foreign currency risk at June 30, 2025.
Fair Value Gain (Loss)(a)
(in millions)
Pay NotionalReceive NotionalReceiveHedgeThree Months Ended June 30,Six Months Ended June 30,
(in millions)Pay Rate(in millions)RateMaturity Date2025202420252024
Fair value hedges
$645 4.75 %600 euros3.10 %June 2028$58 $(2)$86 $— 
537 5.31 %500 euros3.85 %June 203449 (2)72 — 
815 5.65 %750 
euros
3.75 %April 203173 (9)108 (9)
Total notional amount$1,997 1,850 euros$180 $(13)$266 $(9)
(a)    Amounts are recorded in Other Income and expenses, net on the Condensed Consolidated Statement of Operations, which offsets an equal translation adjustment of the foreign denominated debt. See the Condensed Consolidated Statements of Comprehensive Income for amounts excluded from the assessment of effectiveness for which the difference between changes in fair value and periodic amortization is recorded.
LOCATION AND FAIR VALUE OF DERIVATIVE ASSETS AND LIABILITIES RECOGNIZED IN THE CONDENSED CONSOLIDATED BALANCE SHEETS
The following tables show the fair value and balance sheet location of derivative instruments. Although derivatives subject to master netting arrangements are netted on the Condensed Consolidated Balance Sheets, the fair values presented below are shown gross and cash collateral on the derivatives have not been netted against the fair values shown.
Derivative AssetsJune 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current$93 $37 $33 $33 $— $1 $21 $— 
Noncurrent90 45 45 45 — — — — 
Total Derivative Assets – Commodity Contracts$183 $82 $78 $78 $— $1 $21 $— 
Interest Rate Contracts
Designated as Hedging Instruments
Current$84 $— $— $— $— $— $— $— 
Noncurrent26 — — — — — — — 
Not Designated as Hedging Instruments
Current3 — 3 — 3 — — — 
Noncurrent48 28 21 13 7 — — — 
Total Derivative Assets – Interest Rate Contracts$161 $28 $24 $13 $10 $— $— $— 
Foreign Currency Contracts
Designated as Hedging Instruments
Noncurrent195 — — — — — — — 
Total Derivative Assets – Foreign Currency Contracts$195 $— $— $— $— $— $— $— 
Total Derivative Assets$539 $110 $102 $91 $10 $1 $21 $— 
Derivative LiabilitiesJune 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current$70 $35 $10 $10 $— $— $2 $24 
Noncurrent119 16 11 11 — — — 91 
Total Derivative Liabilities – Commodity Contracts$189 $51 $21 $21 $— $— $2 $115 
Interest Rate Contracts
Designated as Hedging Instruments
Current$5 $— $— $— $— $— $— $— 
Noncurrent2 — — — — — — — 
Not Designated as Hedging Instruments
Current12 — 11 — 11 — — — 
Noncurrent23 9 9 4 5 1 5 — 
Total Derivative Liabilities – Interest Rate Contracts$42 $9 $20 $4 $16 $1 $5 $— 
Foreign Currency Contracts
Designated as Hedging Instruments
Current25 — — — — — — — 
Total Derivative Liabilities – Foreign Currency Contracts$25 $— $— $— $— $— $— $— 
Total Derivative Liabilities$256 $60 $41 $25 $16 $1 $7 $115 
Derivative AssetsDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current$49 $20 $17 $17 $— $1 $8 $1 
Noncurrent60 29 32 32 — — — — 
Total Derivative Assets – Commodity Contracts$109 $49 $49 $49 $— $1 $8 $1 
Interest Rate Contracts
Designated as Hedging Instruments
Current108 — — — — — — — 
Noncurrent52 — — — — — — — 
Not Designated as Hedging Instruments
Current110 19 55 44 11 — 36 — 
Noncurrent50 26 23 16 7 — — — 
Total Derivative Assets – Interest Rate Contracts$320 $45 $78 $60 $18 $— $36 $— 
Foreign Currency Contracts
Designated as Hedging Instruments
Noncurrent5 — — — — — — — 
Total Derivative Assets – Foreign Currency Contracts
$5 $— $— $— $— $— $— $— 
Total Derivative Assets$434 $94 $127 $109 $18 $1 $44 $1 
Derivative LiabilitiesDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current$108 $57 $32 $32 $— $— $3 $16 
Noncurrent134 31 24 24 — — — 78 
Total Derivative Liabilities – Commodity Contracts$242 $88 $56 $56 $— $— $3 $94 
Interest Rate Contracts
Not Designated as Hedging Instruments
Current2 — 2 1 1 — — — 
Noncurrent1 — — — — 1 — — 
Total Derivative Liabilities – Interest Rate Contracts$3 $— $2 $1 $1 $1 $— $— 
Foreign Currency Contracts
Designated as Hedging Instruments
Current35 — — — — — — — 
Noncurrent39 — — — — — — — 
Total Derivative Liabilities – Foreign Currency Contracts
$74 $— $— $— $— $— $— $— 
Total Derivative Liabilities$319 $88 $58 $57 $1 $1 $3 $94 
OFFSETTING ASSETS AND LIABILITIES
The following tables present the line items on the Condensed Consolidated Balance Sheets where derivatives are reported. Substantially all of Duke Energy's outstanding derivative contracts are subject to enforceable master netting arrangements. The amounts shown are calculated by counterparty. Accounts receivable or accounts payable may also be available to offset exposures in the event of bankruptcy. These amounts are not included in the tables below.
Derivative AssetsJune 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$180 $37 $36 $33 $3 $1 $21 $— 
Offset
(20)(10)(10)(10)— — — — 
Net amounts presented in Current Assets: Other$160 $27 $26 $23 $3 $1 $21 $— 
Noncurrent
Gross amounts recognized$359 $73 $66 $58 $7 $— $— $— 
Offset
(23)(12)(12)(12)— — — — 
Net amounts presented in Other Noncurrent Assets: Other$336 $61 $54 $46 $7 $— $— $— 
Derivative LiabilitiesJune 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$112 $35 $21 $10 $11 $— $2 $24 
Offset
(20)(10)(10)(10)— — — — 
Cash collateral posted
(1)— — — — — (1)— 
Net amounts presented in Current Liabilities: Other$91 $25 $11 $— $11 $— $1 $24 
Noncurrent
Gross amounts recognized$144 $25 $20 $15 $5 $1 $5 $91 
Offset
(23)(12)(12)(12)— — — — 
Net amounts presented in Other Noncurrent Liabilities: Other$121 $13 $8 $3 $5 $1 $5 $91 
Derivative AssetsDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$267 $39 $72 $61 $11 $1 $44 $1 
Offset
(29)(15)(14)(14)— — — — 
Net amounts presented in Current Assets: Other$238 $24 $58 $47 $11 $1 $44 $1 
Noncurrent
Gross amounts recognized$167 $55 $55 $48 $7 $— $— $— 
Offset
(37)(19)(17)(17)— — — — 
Net amounts presented in Other Noncurrent Assets: Other$130 $36 $38 $31 $7 $— $— $— 
Derivative LiabilitiesDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$145 $57 $34 $33 $1 $— $3 $16 
Offset
(29)(15)(14)(14)— — — — 
Cash collateral posted
(3)(2)— — — — (1)— 
Net amounts presented in Current Liabilities: Other$113 $40 $20 $19 $1 $— $2 $16 
Noncurrent
Gross amounts recognized$174 $31 $24 $24 $— $1 $— $78 
Offset
(37)(19)(17)(17)— — — — 
Cash collateral posted
(4)(4)— — — — — — 
Net amounts presented in Other Noncurrent Liabilities: Other$133 $8 $7 $7 $— $1 $— $78 
OBJECTIVE CREDIT CONTINGENT FEATURES
Certain derivative contracts contain objective credit contingent features. These features include the requirement to post cash collateral or letters of credit if specific events occur, such as a credit rating downgrade below investment grade. The following tables show information with respect to derivative contracts that are in a net liability position and contain objective credit risk-related payment provisions.
June 30, 2025
DukeDuke
DukeEnergyProgressEnergy
(in millions)EnergyCarolinasEnergyProgress
Aggregate fair value of derivatives in a net liability position$9 $9 $— $— 
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered$9 $9 $— $— 
December 31, 2024
DukeDuke
DukeEnergyProgressEnergy
(in millions)EnergyCarolinasEnergyProgress
Aggregate fair value of derivatives in a net liability position$101 $52 $49 $49 
Fair value of collateral already posted6 6 — — 
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered$95 $46 $49 $49 
The Duke Energy Registrants have elected to offset cash collateral and fair values of derivatives. For amounts to be netted, the derivative and cash collateral must be executed with the same counterparty under the same master netting arrangement.
v3.25.2
Investments in Debt and Equity Securities
 6 Months Ended
Jun. 30, 2025
Investments, Debt and Equity Securities [Abstract]  
Investments In Debt and Equity Securities INVESTMENTS IN DEBT AND EQUITY SECURITIES
Duke Energy’s investments in debt and equity securities are primarily comprised of investments held in (i) the nuclear decommissioning trust funds (NDTF) at Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, (ii) the grantor trusts at Duke Energy Florida and Duke Energy Indiana related to OPEB plans and (iii) Bison. The Duke Energy Registrants classify investments in debt securities as Available for Sale (AFS) and investments in equity securities as fair value through net income (FV-NI).
For investments in debt securities classified as AFS, the unrealized gains and losses are included in other comprehensive income until realized at which time they are reported through net income. For investments in equity securities classified as FV-NI, both realized and unrealized gains and losses are reported through net income. Substantially all of Duke Energy’s investments in debt and equity securities qualify for regulatory accounting, and accordingly, all associated realized and unrealized gains and losses on these investments are deferred as a regulatory asset or liability.
Duke Energy classifies the majority of investments in debt and equity securities as long term, unless otherwise noted.
Investment Trusts
The investments within the Investment Trusts are managed by independent investment managers with discretion to buy, sell and invest pursuant to the guidelines set forth by the investment manager agreements and trust agreements. The Duke Energy Registrants have limited oversight of the day-to-day management of these investments. As a result, the ability to hold investments in unrealized loss positions is outside the control of the Duke Energy Registrants. Accordingly, all unrealized losses associated with debt securities within the Investment Trusts are recognized immediately and deferred to regulatory accounts where appropriate.
Other AFS Securities
Unrealized gains and losses on all other AFS securities are included in other comprehensive income until realized, unless it is determined the carrying value of an investment has a credit loss. The Duke Energy Registrants analyze all investment holdings each reporting period to determine whether a decline in fair value is related to a credit loss. If a credit loss exists, the unrealized credit loss is included in earnings. There were no material credit losses as of June 30, 2025, and December 31, 2024.
Other Investments amounts are recorded in Other within Other Noncurrent Assets on the Condensed Consolidated Balance Sheets.
DUKE ENERGY
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $145 $— $— $139 
Equity securities6,210 36 8,637 5,753 61 8,233 
Corporate debt securities14 24 822 6 33 673 
Municipal bonds1 20 355 2 14 342 
U.S. government bonds17 51 1,897 3 84 1,806 
Other debt securities2 6 253 1 8 239 
Total NDTF Investments$6,244 $137 $12,109 $5,765 $200 $11,432 
Other Investments
Cash and cash equivalents$— $— $138 $— $— $47 
Equity securities45 — 125 39 4 160 
Corporate debt securities— 3 77 — 5 79 
Municipal bonds— 2 67 — 1 83 
U.S. government bonds— 5 51 — 5 59 
Other debt securities— 3 43 — 4 45 
Total Other Investments$45 $13 $501 $39 $19 $473 
Total Investments$6,289 $150 $12,610 $5,804 $219 $11,905 
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three and six months ended June 30, 2025, and 2024, were as follows.
Three Months EndedSix Months Ended
(in millions)June 30, 2025June 30, 2024June 30, 2025June 30, 2024
FV-NI:
 Realized gains $41 $127 $167 $195 
 Realized losses40 27 81 45 
AFS:
 Realized gains10 2 20 12 
 Realized losses17 22 37 36 
DUKE ENERGY CAROLINAS
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $60 $— $— $62 
Equity securities3,638 18 4,983 3,386 33 4,751 
Corporate debt securities6 21 501 2 27 401 
Municipal bonds— 6 38 — 4 36 
U.S. government bonds9 33 1,056 — 50 991 
Other debt securities2 6 241 1 8 223 
Total NDTF Investments$3,655 $84 $6,879 $3,389 $122 $6,464 
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three and six months ended June 30, 2025, and 2024, were as follows.
Three Months EndedSix Months Ended
(in millions)June 30, 2025June 30, 2024June 30, 2025June 30, 2024
FV-NI:
 Realized gains$22 $72 $104 $125 
 Realized losses 19 15 41 21 
AFS:
 Realized gains8 1 15 5 
 Realized losses9 11 23 17 
PROGRESS ENERGY
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $85 $— $— $77 
Equity securities2,572 18 3,654 2,367 28 3,482 
Corporate debt securities8 3 321 4 6 272 
Municipal bonds1 14 317 2 10 306 
U.S. government bonds8 18 841 3 34 815 
Other debt securities— — 12 — — 16 
Total NDTF Investments$2,589 $53 $5,230 $2,376 $78 $4,968 
Other Investments
Cash and cash equivalents$— $— $16 $— $— $23 
Municipal bonds— 1 23 — — 24 
Total Other Investments$— $1 $39 $— $— $47 
Total Investments$2,589 $54 $5,269 $2,376 $78 $5,015 
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three and six months ended June 30, 2025, and 2024, were as follows.
Three Months EndedSix Months Ended
(in millions)June 30, 2025June 30, 2024June 30, 2025June 30, 2024
FV-NI:
 Realized gains$19 $55 $63 $70 
 Realized losses21 12 40 24 
AFS:
 Realized gains2 1 5 7 
 Realized losses8 11 14 19 
DUKE ENERGY PROGRESS
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $67 $— $— $54 
Equity securities2,457 18 3,531 2,256 28 3,362 
Corporate debt securities7 3 302 4 6 256 
Municipal bonds1 14 317 2 10 306 
U.S. government bonds8 13 694 3 26 645 
Other debt securities— — 11 — — 14 
Total NDTF Investments$2,473 $48 $4,922 $2,265 $70 $4,637 
Other Investments
Cash and cash equivalents$— $— $11 $— $— $16 
Total Other Investments$— $— $11 $— $— $16 
Total Investments$2,473 $48 $4,933 $2,265 $70 $4,653 
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three and six months ended June 30, 2025, and 2024, were as follows.
Three Months EndedSix Months Ended
(in millions)June 30, 2025June 30, 2024June 30, 2025June 30, 2024
FV-NI:
 Realized gains$17 $55 $61 $70 
 Realized losses21 12 40 24 
AFS:
 Realized gains2 1 5 7 
 Realized losses7 10 13 18 
DUKE ENERGY FLORIDA
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $18 $— $— $23 
Equity securities115 — 123 111 — 120 
Corporate debt securities1 — 19 — — 16 
U.S. government bonds— 5 147 — 8 170 
Other debt securities— — 1 — — 2 
Total NDTF Investments(a)
$116 $5 $308 $111 $8 $331 
Other Investments
Cash and cash equivalents$— $— $2 $— $— $3 
Municipal bonds— 1 23 — — 24 
Total Other Investments$— $1 $25 $— $— $27 
Total Investments$116 $6 $333 $111 $8 $358 
(a)During the six months ended June 30, 2025, and the year ended December 31, 2024, Duke Energy Florida received reimbursements from the NDTF for costs related to ongoing decommissioning activity of Crystal River Unit 3.
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three and six months ended June 30, 2025, and 2024, were immaterial.
DUKE ENERGY INDIANA
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are measured at FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedEstimated
HoldingHoldingFairHoldingFair
(in millions)GainsLossesValueLossesValue
Investments
Cash and cash equivalents$— $— $2 $— $1 
Equity securities1 — 47 4 89 
Corporate debt securities— — 1 — 6 
Municipal bonds— 1 25 1 43 
U.S. government bonds— — — — 7 
Total Investments$1 $1 $75 $5 $146 
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three and six months ended June 30, 2025, and 2024, were immaterial.
DEBT SECURITY MATURITIES
The table below summarizes the maturity date for debt securities.
June 30, 2025
DukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaIndiana
Due in one year or less$87 $5 $79 $17 $62 $1 
Due after one through five years896 397 438 375 63 8 
Due after five through 10 years695 360 285 268 17 6 
Due after 10 years1,887 1,074 712 664 48 11 
Total$3,565 $1,836 $1,514 $1,324 $190 $26 
v3.25.2
Fair Value Measurements
 6 Months Ended
Jun. 30, 2025
Fair Value Disclosures [Abstract]  
Fair Value Measurements FAIR VALUE MEASUREMENTS
Fair value is the exchange price to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date. The fair value definition focuses on an exit price versus the acquisition cost. Fair value measurements use market data or assumptions market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. These inputs may be readily observable, corroborated by market data or generally unobservable. Valuation techniques maximize the use of observable inputs and minimize the use of unobservable inputs. A midmarket pricing convention (the midpoint price between bid and ask prices) is permitted for use as a practical expedient.
Fair value measurements are classified in three levels based on the fair value hierarchy as defined by GAAP. Certain investments are not categorized within the fair value hierarchy. These investments are measured at fair value using the net asset value per share practical expedient. The net asset value is derived based on the investment cost, less any impairment, plus or minus changes resulting from observable price changes for an identical or similar investment of the same issuer.
Fair value accounting guidance permits entities to elect to measure certain financial instruments that are not required to be accounted for at fair value, such as equity method investments or the Company’s own debt, at fair value. The Duke Energy Registrants have not elected to record any of these items at fair value.
Valuation methods of the primary fair value measurements disclosed below are as follows.
Investments in equity securities
The majority of investments in equity securities are valued using Level 1 measurements. Investments in equity securities are typically valued at the closing price in the principal active market as of the last business day of the quarter. Principal active markets for equity prices include published exchanges such as the New York Stock Exchange and Nasdaq Stock Market. Foreign equity prices are translated from their trading currency using the currency exchange rate in effect at the close of the principal active market. There was no after-hours market activity that was required to be reflected in the reported fair value measurements.
Investments in debt securities
Most investments in debt securities are valued using Level 2 measurements because the valuations use interest rate curves and credit spreads applied to the terms of the debt instrument (maturity and coupon interest rate) and consider the counterparty credit rating. If the market for a particular fixed-income security is relatively inactive or illiquid, the measurement is Level 3.
Commodity derivatives
Commodity derivatives with clearinghouses are classified as Level 1. Commodity derivatives with observable forward curves are classified as Level 2. If forward price curves are not observable for the full term of the contract and the unobservable period had more than an insignificant impact on the valuation, the commodity derivative is classified as Level 3. In isolation, increases (decreases) in natural gas forward prices result in favorable (unfavorable) fair value adjustments for natural gas purchase contracts; and increases (decreases) in electricity forward prices result in unfavorable (favorable) fair value adjustments for electricity sales contracts. Duke Energy regularly evaluates and validates pricing inputs used to estimate the fair value of certain commodity contracts by a market participant price verification procedure. This procedure provides a comparison of internal forward commodity curves to market participant generated curves.
Interest rate derivatives
Most over-the-counter interest rate contract derivatives are valued using financial models that utilize observable inputs for similar instruments and are classified as Level 2. Inputs include forward interest rate curves, notional amounts, interest rates and credit quality of the counterparties.
Foreign currency derivatives
Most over-the-counter foreign currency derivatives are valued using financial models that utilize observable inputs for similar instruments and are classified as Level 2. Inputs include forward foreign currency rate curves, notional amounts, foreign currency rates and credit quality of the counterparties.
Other fair value considerations
See Note 12 in Duke Energy's Annual Report on Form 10-K for the year ended December 31, 2024, for a discussion of the valuation of goodwill and intangible assets.
DUKE ENERGY
The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets. Derivative amounts in the tables below for all Duke Energy Registrants exclude cash collateral, which is disclosed in Note 9. See Note 10 for additional information related to investments by major security type for the Duke Energy Registrants.
June 30, 2025
(in millions)Total Fair ValueLevel 1Level 2Level 3Not Categorized
NDTF cash and cash equivalents$145 $145 $— $— $— 
NDTF equity securities8,637 8,609 3 — 25 
NDTF debt securities3,327 1,051 2,276 — — 
Other equity securities125 125 — — — 
Other debt securities238 51 187 — — 
Other cash and cash equivalents138 138 — — — 
Derivative assets539 8 517 14 — 
Total assets13,149 10,127 2,983 14 25 
Derivative liabilities(256)(2)(254)— — 
Net assets$12,893 $10,125 $2,729 $14 $25 
December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Level 3Not Categorized
NDTF cash and cash equivalents$139 $139 $— $— $— 
NDTF equity securities8,233 8,203 2 — 28 
NDTF debt securities3,060 1,022 2,038 — — 
Other equity securities160 160 — — — 
Other debt securities266 52 214 — — 
Other cash and cash equivalents47 47 — — — 
Derivative assets434 2 423 9 — 
Total assets12,339 9,625 2,677 9 28 
Derivative liabilities(319)(3)(316)— — 
Net assets$12,020 $9,622 $2,361 $9 $28 
The following table provides reconciliations of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.
Derivatives (net)
Three Months Ended June 30,Six Months Ended June 30,
(in millions) 2025202420252024
Balance at beginning of period$3 $6 $9 $15 
Purchases, sales, issuances and settlements:
Purchases14 29 14 29 
Settlements8 (10)2 (23)
Total (losses) gains included on the Condensed Consolidated Balance Sheet
(11)10 (11)14 
Balance at end of period$14 $35 $14 $35 
DUKE ENERGY CAROLINAS
The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.
June 30, 2025
(in millions)Total Fair ValueLevel 1Level 2Not Categorized
NDTF cash and cash equivalents$60 $60 $— $— 
NDTF equity securities4,983 4,955 3 25 
NDTF debt securities1,836 517 1,319 — 
Derivative assets110 — 110 — 
Total assets6,989 5,532 1,432 25 
Derivative liabilities(60)— (60)— 
Net assets$6,929 $5,532 $1,372 $25 
December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Not Categorized
NDTF cash and cash equivalents$62 $62 $— $— 
NDTF equity securities4,751 4,721 2 28 
NDTF debt securities1,651 520 1,131 — 
Derivative assets94 — 94 — 
Total assets6,558 5,303 1,227 28 
Derivative liabilities(88)— (88)— 
Net assets$6,470 $5,303 $1,139 $28 
PROGRESS ENERGY
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.
June 30, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Total Fair ValueLevel 1Level 2
NDTF cash and cash equivalents$85 $85 $— $77 $77 $— 
NDTF equity securities3,654 3,654 — 3,482 3,482 — 
NDTF debt securities1,491 534 957 1,409 502 907 
Other debt securities23 — 23 24 — 24 
Other cash and cash equivalents16 16 — 23 23 — 
Derivative assets102 — 102 127 — 127 
Total assets5,371 4,289 1,082 5,142 4,084 1,058 
Derivative liabilities(41)— (41)(58)— (58)
Net assets$5,330 $4,289 $1,041 $5,084 $4,084 $1,000 
DUKE ENERGY PROGRESS
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.
June 30, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Total Fair ValueLevel 1Level 2
NDTF cash and cash equivalents$67 $67 $— $54 $54 $— 
NDTF equity securities3,531 3,531 — 3,362 3,362 — 
NDTF debt securities1,324 413 911 1,221 365 856 
Other cash and cash equivalents11 11 — 16 16 — 
Derivative assets91 — 91 109 — 109 
Total assets5,024 4,022 1,002 4,762 3,797 965 
Derivative liabilities(25)— (25)(57)— (57)
Net assets$4,999 $4,022 $977 $4,705 $3,797 $908 
DUKE ENERGY FLORIDA
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.
June 30, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Total Fair ValueLevel 1Level 2
NDTF cash and cash equivalents$18 $18 $— $23 $23 $— 
NDTF equity securities123 123 — 120 120 — 
NDTF debt securities167 121 46 188 137 51 
Other debt securities23 — 23 24 — 24 
Other cash and cash equivalents2 2 — 3 3 — 
Derivative assets10 — 10 18 — 18 
Total assets343 264 79 376 283 93 
Derivative liabilities(16)— (16)(1)— (1)
Net assets$327 $264 $63 $375 $283 $92 
DUKE ENERGY OHIO
The recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets were not material at June 30, 2025, and December 31, 2024.
DUKE ENERGY INDIANA
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.
June 30, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Level 3Total Fair ValueLevel 1Level 2Level 3
Other equity securities$47 $47 $— $— $89 $89 $— $— 
Other debt securities26 — 26 — 56 — 56 — 
Other cash and cash equivalents2 2 — — 1 1 — — 
Derivative assets21 8 — 13 44 — 36 8 
Total assets96 57 26 13 190 90 92 8 
Derivative liabilities(7)(2)(5)— (3)(3)— — 
Net assets$89 $55 $21 $13 $187 $87 $92 $8 
The following table provides a reconciliation of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.
Derivatives (net)
Three Months Ended June 30,Six Months Ended June 30,
(in millions)2025202420252024
Balance at beginning of period$2 $5 $8 $13 
Purchases, sales, issuances and settlements:
Purchases12 27 12 27 
Settlements9 (9)3 (20)
Total (losses) gains included on the Condensed Consolidated Balance Sheet
(10)10 (10)13 
Balance at end of period$13 $33 $13 $33 
PIEDMONT
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.
June 30, 2025December 31, 2024
(in millions)Total Fair ValueLevel 2Total Fair ValueLevel 1Level 2
Derivative assets$— $— $1 $1 $— 
Derivative liabilities(115)(115)(94)— (94)
Net (liabilities) assets$(115)$(115)$(93)$1 $(94)
QUANTITATIVE INFORMATION ABOUT UNOBSERVABLE INPUTS
The following tables include quantitative information about the Duke Energy Registrants' derivatives classified as Level 3.
June 30, 2025
Weighted
Fair ValueAverage
Investment Type(in millions)Valuation TechniqueUnobservable InputRangeRange
Duke Energy Ohio 
FTRs$1 RTO auction pricingFTR price – per MWh$— -$0.78 $0.20 
Duke Energy Indiana 
FTRs13 RTO auction pricingFTR price – per MWh(2.09)-17.87 0.95 
Duke Energy
Total Level 3 derivatives$14 
December 31, 2024
Weighted
Fair ValueAverage
Investment Type(in millions)Valuation TechniqueUnobservable InputRangeRange
Duke Energy Ohio   
FTRs$1 RTO auction pricingFTR price – per MWh$— –$1.13 $0.48 
Duke Energy Indiana   
FTRs8 RTO auction pricingFTR price – per MWh(0.63)–9.24 0.94 
Duke Energy
Total Level 3 derivatives$9 
OTHER FAIR VALUE DISCLOSURES
The fair value and book value of long-term debt, including current maturities, is summarized in the following table. Estimates determined are not necessarily indicative of amounts that could have been settled in current markets. Fair value of long-term debt uses Level 2 measurements.
June 30, 2025December 31, 2024
(in millions)Book ValueFair ValueBook ValueFair Value
Duke Energy(a)
$83,960 $77,104 $80,689 $73,440 
Duke Energy Carolinas18,345 16,916 17,490 15,975 
Progress Energy26,880 24,999 24,496 22,548 
Duke Energy Progress14,215 12,757 12,504 11,009 
Duke Energy Florida11,020 10,449 10,348 9,752 
Duke Energy Ohio4,364 4,095 4,165 3,871 
Duke Energy Indiana5,095 4,655 4,798 4,329 
Piedmont4,004 3,670 4,003 3,584 
(a)Book value of long-term debt includes $1 billion at June 30, 2025, and December 31, 2024, of net unamortized debt discount and premium of purchase accounting adjustments related to the mergers with Progress Energy and Piedmont that are excluded from fair value of long-term debt.
At both June 30, 2025, and December 31, 2024, fair value of cash and cash equivalents, accounts and notes receivable, accounts payable, notes payable and commercial paper and nonrecourse notes payable of VIEs are not materially different from their carrying amounts because of the short-term nature of these instruments and/or because the stated rates approximate market rates.
v3.25.2
Variable Interest Entities
 6 Months Ended
Jun. 30, 2025
Variable Interest Entities [Abstract]  
Variable Interest Entities VARIABLE INTEREST ENTITIES
CONSOLIDATED VIEs
The obligations of the consolidated VIEs discussed in the following paragraphs are nonrecourse to the Duke Energy Registrants. The registrants have no requirement to provide liquidity to purchase assets of or guarantee performance of these VIEs unless noted in the following paragraphs.
No financial support was provided to any of the consolidated VIEs during the six months ended June 30, 2025, and the year ended December 31, 2024, or is expected to be provided in the future that was not previously contractually required.
Receivables Financing – DERF/DEPR/DEFR
DERF, DEPR and DEFR were bankruptcy remote, special purpose subsidiaries of Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, respectively. DERF, DEPR and DEFR were wholly owned LLCs with separate legal existence from their parent companies, and their assets were not generally available to creditors of their parent companies. On a revolving basis, DERF, DEPR and DEFR bought certain accounts receivable arising from the sale of electricity and related services from their parent companies.
DERF, DEPR and DEFR borrowed amounts under credit facilities to buy these receivables. Borrowing availability from the credit facilities was limited to the amount of qualified receivables purchased, which generally excluded receivables past due more than a predetermined number of days and reserves for expected past-due balances. The sole source of funds to satisfy the related debt obligations were cash collections from the receivables. Amounts borrowed under the DERF and DEPR credit facilities were reflected on the Condensed Consolidated Balance Sheets as Current maturities of long-term debt as of December 31, 2024.
The most significant activity that impacted the economic performance of DERF, DEPR and DEFR were the decisions made to manage delinquent receivables. Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida were considered the primary beneficiaries and consolidated DERF, DEPR and DEFR, respectively, as they made those decisions.
In April 2024, Duke Energy Florida repaid all outstanding DEFR borrowings totaling $325 million and terminated the related DEFR credit facility. Additionally, Duke Energy Florida's related restricted receivables outstanding at DEFR at the time of termination totaled $459 million and were transferred back to Duke Energy Florida to be collected and reported as Receivables on the Condensed Consolidated Balance Sheets.
In January 2025, Duke Energy Carolinas repaid all outstanding DERF borrowings totaling $500 million and terminated the related DERF credit facility. Additionally, Duke Energy Carolinas' related restricted receivables outstanding at DERF at the time of termination totaled $1,081 million and were transferred back to Duke Energy Carolinas to be collected and reported as Receivables on the Condensed Consolidated Balance Sheets.
In March 2025, Duke Energy Progress repaid all outstanding DEPR borrowings totaling $400 million and terminated the related DEPR credit facility. Additionally, Duke Energy Progress' related restricted receivables outstanding at DEPR at the time of termination totaled $943 million and were transferred back to Duke Energy Progress to be collected and reported as Receivables on the Condensed Consolidated Balance Sheets.
Receivables Financing – CRC
In March 2024, Duke Energy repaid all outstanding CRC borrowings totaling $350 million and terminated the related CRC credit facility. Additionally, Duke Energy's related restricted receivables outstanding at CRC at the time of termination totaled $682 million, consisting of $316 million and $366 million of restricted receivables that were transferred back to Duke Energy Indiana and Duke Energy Ohio, respectively, to be collected and reported as Receivables on the Condensed Consolidated Balance Sheets.
Receivables Financing – Credit Facilities
The following table summarizes the amounts and expiration dates of the credit facilities and associated restricted receivables described above.
Duke EnergyDuke Energy
CarolinasProgress
(in millions)DERFDEPR
Expiration date
(a)
(b)
Credit facility amount
(a)
(b)
Amounts borrowed at June 30, 2025— — 
Amounts borrowed at December 31, 2024500 400 
Restricted Receivables at June 30, 2025— — 
Restricted Receivables at December 31, 20241,054 835 
(a)    In January 2025, Duke Energy Carolinas repaid all outstanding DERF borrowings totaling $500 million and terminated the related DERF credit facility.
(b)    In March 2025, Duke Energy Progress repaid all outstanding DEPR borrowings totaling $400 million and terminated the related DEPR credit facility.
Nuclear Asset-Recovery Bonds
Duke Energy Florida Project Finance, LLC (DEFPF) is a bankruptcy remote, wholly owned special purpose subsidiary of Duke Energy Florida. DEFPF was formed in 2016 for the sole purpose of issuing nuclear asset-recovery bonds to finance Duke Energy Florida's unrecovered regulatory asset related to Crystal River Unit 3.
In 2016, DEFPF issued senior secured bonds and used the proceeds to acquire nuclear asset-recovery property from Duke Energy Florida. The nuclear asset-recovery property acquired includes the right to impose, bill, collect and adjust a non-bypassable nuclear asset-recovery charge from all Duke Energy Florida retail customers until the bonds are paid in full and all financing costs have been recovered. The nuclear asset-recovery bonds are secured by the nuclear asset-recovery property and cash collections from the nuclear asset-recovery charges are the sole source of funds to satisfy the debt obligation. The bondholders have no recourse to Duke Energy Florida.
DEFPF is considered a VIE primarily because the equity capitalization is insufficient to support its operations. Duke Energy Florida has the power to direct the significant activities of the VIE as described above and therefore Duke Energy Florida is considered the primary beneficiary and consolidates DEFPF.
The following table summarizes the impact of DEFPF on Duke Energy Florida's Condensed Consolidated Balance Sheets.
(in millions)June 30, 2025December 31, 2024
Regulatory Assets: Current61 61 
Current Assets: Other28 35 
Other Noncurrent Assets: Regulatory assets715 741 
Other Noncurrent Assets: Other
7 — 
Current Liabilities: Other8 8 
Current maturities of long-term debt60 59 
Long-Term Debt741 773 
Storm Recovery Bonds
Duke Energy Carolinas NC Storm Funding, LLC (DECNCSF), Duke Energy Progress NC Storm Funding, LLC (DEPNCSF) and Duke Energy Progress SC Storm Funding, LLC (DEPSCSF) are bankruptcy remote, wholly owned special purpose subsidiaries of Duke Energy Carolinas and Duke Energy Progress. DECNCSF and DEPNCSF were formed in 2021 while DEPSCSF was formed in 2024, all for the sole purpose of issuing storm recovery bonds to finance certain of Duke Energy Carolinas’ and Duke Energy Progress’ unrecovered regulatory assets related to storm costs incurred in North Carolina and South Carolina.
In 2021, DECNCSF and DEPNCSF issued senior secured bonds, and used the proceeds to acquire storm recovery property from Duke Energy Carolinas and Duke Energy Progress. The storm recovery property was created by state legislation and NCUC financing orders for the purpose of financing storm costs incurred in 2018 and 2019. In April 2024, DEPSCSF issued $177 million of senior secured bonds and used the proceeds to acquire storm recovery property from Duke Energy Progress. The storm recovery property was created by state legislation and a PSCSC financing order for the purpose of financing storm costs incurred from 2014 through 2022.
The storm recovery property acquired includes the right to impose, bill, collect and adjust a non-bypassable charge from all Duke Energy Carolinas’ and Duke Energy Progress’ North Carolina and South Carolina retail customers until the bonds are paid in full and all financing costs have been recovered. The storm recovery bonds are secured by the storm recovery property and cash collections from the storm recovery charges are the sole source of funds to satisfy the debt obligation. The bondholders have no recourse to Duke Energy Carolinas or Duke Energy Progress. These entities are considered VIEs primarily because their equity capitalization is insufficient to support their operations. Duke Energy Carolinas and Duke Energy Progress have the power to direct the significant activities of the VIEs as described above and therefore Duke Energy Carolinas and Duke Energy Progress are considered the primary beneficiaries. Duke Energy Carolinas consolidates DECNCSF and Duke Energy Progress consolidates DEPNCSF and DEPSCSF.
The following table summarizes the impact of these VIEs on Duke Energy Carolinas’ and Duke Energy Progress’ Consolidated Balance Sheets.
June 30, 2025December 31, 2024
Duke EnergyDuke EnergyDuke EnergyDuke Energy
CarolinasProgressCarolinasProgress
(in millions)DECNCSFDEPNCSFDEPSCSFDECNCSFDEPNCSFDEPSCSF
Regulatory Assets: Current$12 $39 $8 $12 $39 $8 
Current Assets: Other9 29 8 9 27 13 
Other Noncurrent Assets: Regulatory assets184 600 152 189 620 155 
Other Noncurrent Assets: Other1 4 1 1 4 1 
Current Liabilities: Other2 8 3 2 10 7 
Current Maturities of Long-Term Debt
10 35 5 10 34 9 
Long-Term Debt193 629 160 198 646 163 
Procurement Company – Duke Energy Florida
Duke Energy Florida Purchasing Company, LLC (DEF ProCo) is a wholly owned special purpose subsidiary of Duke Energy Florida. DEF ProCo was formed in 2023 as the primary procurement agent for equipment, materials and supplies for Duke Energy Florida. DEF ProCo interacts with third-party suppliers on Duke Energy Florida’s behalf with credit and risk support provided by Duke Energy Florida. DEF ProCo is a qualified reseller under Florida tax law and conveys acquired assets to Duke Energy Florida through leases on each acquired asset.
This entity is considered a VIE primarily because the equity capitalization is insufficient to support their operations. Duke Energy Florida has the power to direct the significant activities of this VIE as described above and therefore Duke Energy Florida is considered the primary beneficiary and consolidates the procurement company.
The following table summarizes the impact of this VIE on Duke Energy Florida's Consolidated Balance Sheets.
(in millions)June 30, 2025
December 31, 2024
Inventory
$548 $494 
Accounts Payable
241 208 
NON-CONSOLIDATED VIEs
Natural Gas Investments
Duke Energy has investments in various joint ventures including pipeline and renewable natural gas projects. These entities are considered VIEs due to having insufficient equity to finance their own activities without subordinated financial support. Duke Energy does not have the power to direct the activities that most significantly impact the economic performance, the obligation to absorb losses or the right to receive benefits of these VIEs and therefore does not consolidate these entities.
Non-consolidated VIEs are immaterial on the Condensed Consolidated Balance Sheets and the Duke Energy Registrants are not aware of any situations where the maximum exposure to loss significantly exceeds the carrying values.
CRC
The following table shows sales and cash flows related to receivables sold and reflects CRC activity prior to its termination in March 2024.
Duke Energy Ohio
Duke Energy Indiana
Six Months EndedSix Months Ended
(in millions)June 30, 2024June 30, 2024
Sales
Receivables sold$474 $473 
Loss recognized on sale7 6 
Cash flows
Cash proceeds from receivables sold$478 $523 
Return received on retained interests4 4 
Cash flows from sales of receivables are reflected within Cash Flows from Operating Activities and Cash Flows from Investing Activities on Duke Energy Ohio’s and Duke Energy Indiana’s Condensed Consolidated Statements of Cash Flows.
v3.25.2
Revenue
 6 Months Ended
Jun. 30, 2025
Revenue from Contract with Customer [Abstract]  
Revenue REVENUE
Duke Energy earns substantially all of its revenues through its reportable segments, EU&I and GU&I.
Electric Utilities and Infrastructure
EU&I earns the majority of its revenues through retail and wholesale electric service through the generation, transmission, distribution and sale of electricity. Duke Energy generally provides retail and wholesale electric service customers with their full electric load requirements or with supplemental load requirements when the customer has other sources of electricity.
The majority of wholesale revenues are full requirements contracts where the customers purchase the substantial majority of their energy needs and do not have a fixed quantity of contractually required energy or capacity. As such, related forecasted revenues are considered optional purchases. Supplemental requirements contracts that include contracted blocks of energy and capacity at contractually fixed prices have the following estimated remaining performance obligations:
Remaining Performance Obligations
(in millions)20252026202720282029ThereafterTotal
Duke Energy Carolinas$6 $12 $12 $12 $— $— $42 
Progress Energy17 43 13 13 13 42 141 
Duke Energy Progress3 6 6 6 6 20 47 
Duke Energy Florida14 37 7 7 7 22 94 
Duke Energy Indiana8 17 15 6 — — 46 
Revenues for block sales are recognized monthly as energy is delivered and stand-ready service is provided, consistent with invoiced amounts and unbilled estimates.
Gas Utilities and Infrastructure
GU&I earns its revenue through retail and wholesale natural gas service through the transportation, distribution and sale of natural gas. Duke Energy generally provides retail and wholesale natural gas service customers with all natural gas load requirements. Additionally, while natural gas can be stored, substantially all natural gas provided by Duke Energy is consumed by customers simultaneously with receipt of delivery.
Fixed-capacity payments under long-term contracts for the GU&I segment include minimum margin contracts and supply arrangements with municipalities and power generation facilities. Revenues for related sales are recognized monthly as natural gas is delivered and stand-ready service is provided, consistent with invoiced amounts and unbilled estimates. Estimated remaining performance obligations are as follows:
Remaining Performance Obligations
(in millions)20252026202720282029ThereafterTotal
Piedmont$32 $51 $49 $46 $44 $151 $373 
Other
The remainder of Duke Energy’s operations is presented as Other, which does not include material revenues from contracts with customers.
Disaggregated Revenues
Disaggregated revenues are presented as follows:
Three Months Ended June 30, 2025
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
   Residential$3,242 $919 $1,753 $663 $1,089 $253 $316 $— 
Commercial
2,053 693 966 426 538 147 245 — 
   Industrial850 355 264 179 82 36 196 — 
   Wholesale523 132 328 294 33 19 44 — 
   Other revenues262 96 221 111 117 18 9 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$6,930 $2,195 $3,532 $1,673 $1,859 $473 $810 $— 
Gas Utilities and Infrastructure
   Residential$189 $— $— $— $— $100 $— $89 
   Commercial136 — — — — 37 — 99 
   Industrial41 — — — — 9 — 32 
   Power Generation— — — — — — — 23 
   Other revenues70 — — — — 8 — 47 
Total Gas Utilities and Infrastructure revenue from contracts with customers$436 $— $— $— $— $154 $— $290 
Other
Revenue from contracts with customers$7 $— $— $— $— $— $— $— 
Total revenue from contracts with customers$7,373 $2,195 $3,532 $1,673 $1,859 $627 $810 $290 
Other revenue sources(a)
$135 $36 $37 $8 $26 $27 $11 $45 
Total revenues$7,508 $2,231 $3,569 $1,681 $1,885 $654 $821 $335 
Three Months Ended June 30, 2024
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
   Residential$3,092 $959 $1,625 $661 $964 $240 $269 $— 
Commercial
2,013 755 933 427 506 144 180 — 
   Industrial869 374 267 183 84 39 190 — 
   Wholesale524 127 337 298 39 10 49 — 
   Other revenues293 99 187 91 96 18 39 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$6,791 $2,314 $3,349 $1,660 $1,689 $451 $727 $— 
Gas Utilities and Infrastructure
   Residential$182 $— $— $— $— $86 $— $96 
   Commercial103 — — — — 31 — 72 
   Industrial32 — — — — 6 — 24 
   Power Generation— — — — — — — 8 
   Other revenues32 — — — — 9 — 23 
Total Gas Utilities and Infrastructure revenue from contracts with customers$349 $— $— $— $— $132 $— $223 
Other
Revenue from contracts with customers$11 $— $— $— $— $— $— $— 
Total revenue from contracts with customers$7,151 $2,314 $3,349 $1,660 $1,689 $583 $727 $223 
Other revenue sources(a)
$21 $(17)$8 $(24)$27 $25 $20 $21 
Total revenues$7,172 $2,297 $3,357 $1,636 $1,716 $608 $747 $244 
Six Months Ended June 30, 2025
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
   Residential$6,645 $2,046 $3,366 $1,483 $1,883 $535 $695 $— 
Commercial
3,974 1,394 1,809 841 968 289 478 — 
   Industrial1,673 689 528 372 156 69 383 — 
   Wholesale1,193 281 770 698 72 41 101 — 
   Other revenues498 276 467 274 193 36 8 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$13,983 $4,686 $6,940 $3,668 $3,272 $970 $1,665 $— 
Gas Utilities and Infrastructure
   Residential$895 $— $— $— $— $286 $— $609 
   Commercial458 — — — — 107 — 351 
   Industrial96 — — — — 25 — 71 
   Power Generation— — — — — — — 47 
   Other revenues144 — — — — 14 — 100 
Total Gas Utilities and Infrastructure revenue from contracts with customers$1,593 $— $— $— $— $432 $— $1,178 
Other
Revenue from contracts with customers$15 $— $— $— $— $— $— $— 
Total Revenue from contracts with customers$15,591 $4,686 $6,940 $3,668 $3,272 $1,402 $1,665 $1,178 
Other revenue sources(a)
$166 $69 $96 $31 $57 $18 $14 $14 
Total operating revenues
$15,757 $4,755 $7,036 $3,699 $3,329 $1,420 $1,679 $1,192 
Six Months Ended June 30, 2024
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
   Residential$6,207 $2,017 $3,142 $1,403 $1,739 $493 $556 $— 
Commercial
3,947 1,472 1,799 849 950 296 381 — 
   Industrial1,691 714 533 360 173 71 373 — 
   Wholesale1,078 265 692 624 68 24 97 — 
   Other revenues546 198 336 169 167 40 73 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$13,469 $4,666 $6,502 $3,405 $3,097 $924 $1,480 $— 
Gas Utilities and Infrastructure
   Residential$702 $— $— $— $— $233 $— $469 
   Commercial343 — — — — 88 — 255 
   Industrial79 — — — — 17 — 62 
   Power Generation— — — — — — — 16 
   Other revenues72 — — — — 14 — 58 
Total Gas Utilities and Infrastructure revenue from contracts with customers$1,196 $— $— $— $— $352 $— $860 
Other
Revenue from contracts with customers$18 $— $— $— $— $— $— $— 
Total Revenue from contracts with customers$14,683 $4,666 $6,502 $3,405 $3,097 $1,276 $1,480 $860 
Other revenue sources(a)
$160 $38 $83 $19 $55 $10 $26 $60 
Total operating revenues
$14,843 $4,704 $6,585 $3,424 $3,152 $1,286 $1,506 $920 
(a)Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions include regulatory mechanisms that periodically adjust for over or under collection of related revenues
The following table presents the reserve for credit losses for trade and other receivables.
Three Months Ended June 30, 2024 and 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Balance at March 31, 2024$204 $62 $73 $47 $27 $41 $16 $12 
Write-Offs(36)(16)(17)(12)(5)— — (3)
Credit Loss Expense35 10 11 6 5 1 — 2 
Other Adjustments4 9 6 6 (1)— — — 
Balance at June 30, 2024$207 $65 $73 $47 $26 $42 $16 $11 
Balance at March 31, 2025$204 $64 $67 $42 $25 $46 $17 $10 
Write-Offs(46)(12)(14)(10)(4)(8)(4)(8)
Credit Loss Expense32 5 10 3 7 — 6 11 
Other Adjustments9 — 7 7 — 3 (2)1 
Balance at June 30, 2025$199 $57 $70 $42 $28 $41 $17 $14 
Six Months Ended June 30, 2024 and 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Balance at December 31, 2023$205 $56 $74 $44 $31 $9 $5 $11 
Write-Offs(68)(28)(33)(19)(14)— — (4)
Credit Loss Expense45 17 20 10 10 2 2 4 
Other Adjustments25 20 12 12 (1)31 9 — 
Balance at June 30, 2024$207 $65 $73 $47 $26 $42 $16 $11 
Balance at December 31, 2024$209 $69 $73 $44 $29 $43 $15 $10 
Write-Offs(75)(26)(29)(18)(11)(8)(4)(8)
Credit Loss Expense46 10 18 8 10 1 6 11 
Other Adjustments19 4 8 8 — 5 — 1 
Balance at June 30, 2025$199 $57 $70 $42 $28 $41 $17 $14 
Trade and other receivables are evaluated based on an estimate of the risk of loss over the life of the receivable and current and historical conditions using supportable assumptions. Management evaluates the risk of loss for trade and other receivables by comparing the historical write-off amounts to total revenue over a specified period. Historical loss rates are adjusted due to the impact of current conditions, as well as forecasted conditions over a reasonable time period. The calculated write-off rate can be applied to the receivable balance for which an established reserve does not already exist. Management reviews the assumptions and risk of loss periodically for trade and other receivables.
v3.25.2
Stockholders' Equity
 6 Months Ended
Jun. 30, 2025
Equity [Abstract]  
Stockholders' Equity STOCKHOLDERS' EQUITY
Basic EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the weighted average number of common shares outstanding during the period. Diluted EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the diluted weighted average number of common shares outstanding during the period. Diluted EPS reflects the potential dilution that could occur if securities or other agreements to issue common stock, such as equity forward sale agreements or convertible debt, were exercised or settled. Duke Energy applies the if-converted method for calculating any potential dilutive effect of the conversion of the outstanding convertible notes on diluted EPS, if applicable. Duke Energy’s participating securities are restricted stock units that are entitled to dividends declared on Duke Energy common stock during the restricted stock unit’s vesting periods. Dividends declared on preferred stock are recorded on the Condensed Consolidated Statements of Operations as a reduction of net income to arrive at net income available to Duke Energy common stockholders. Dividends accumulated on preferred stock are an adjustment to net income used in the calculation of basic and diluted EPS.
The following table presents Duke Energy’s basic and diluted EPS calculations, the weighted average number of common shares outstanding and common and preferred share dividends declared.
Three Months Ended June 30,Six Months Ended June 30,
(in millions, except per share amounts)2025202420252024
Net Income available to Duke Energy common stockholders
$971 $886 $2,336 $1,985 
Less: Loss from discontinued operations attributable to Duke Energy common stockholders
(1)(10)(1)(13)
Accumulated preferred stock dividends adjustment— (12)— — 
Less: Impact of participating securities1 1 3 2 
Income from continuing operations available to Duke Energy common stockholders$971 $883 $2,334 $1,996 
Loss from discontinued operations, net of tax
$(1)$(10)$(1)$(13)
Add: Loss attributable to NCI
— — — — 
Loss from discontinued operations attributable to Duke Energy common stockholders
$(1)$(10)$(1)$(13)
Weighted average common shares outstanding – basic and diluted
777 772 777 771 
EPS from continuing operations available to Duke Energy common stockholders
Basic and diluted(a)
$1.25 $1.14 $3.00 $2.59 
Loss Per Share from discontinued operations attributable to Duke Energy common stockholders
   Basic and diluted(a)
$— $(0.01)$— $(0.02)
Potentially dilutive items excluded from the calculation(b)
2 2 2 2 
Dividends declared per common share$1.045 $1.025 $2.090 $2.050 
Dividends declared on Series A preferred stock per depositary share(c)
$0.359 $0.359 $0.719 $0.719 
Dividends declared on Series B preferred stock per share(d)
$— $— $— $24.375 
(a)The convertible notes were excluded from the calculations of diluted EPS because the effect was antidilutive.
(b)Performance stock awards were not included in the dilutive securities calculation because the performance measures related to the awards had not been met.
(c)5.75% Series A Cumulative Redeemable Perpetual Preferred Stock dividends are payable quarterly in arrears on the 16th day of March, June, September and December. The preferred stock has a $25 liquidation preference per depositary share.
(d)4.875% Series B Fixed-Rate Reset Cumulative Redeemable Perpetual Preferred Stock dividends were payable semiannually in arrears on the 16th day of March and September. The preferred stock was redeemed on September 16, 2024.
Common Stock
In November 2022, Duke Energy filed a prospectus supplement and executed an Equity Distribution Agreement (EDA) under which it may sell up to $1.5 billion of its common stock through an at-the-market (ATM) offering program, including an equity forward sales component. Under the terms of the EDA, Duke Energy may issue and sell shares of common stock through September 2025.
The following table shows ATM equity issuances pursuant to forward contracts executed during February and March 2025.
Tranche
Shares Priced
Initial Forward Price
1
1,710,979$116.02 
2
1,262,618$117.94 
3
1,264,410$117.79 
Total
4,238,007
The equity forwards require Duke Energy to either physically settle the transactions by issuing shares in exchange for net proceeds at the then-applicable forward sale price specified by the agreements or net settle in whole or in part through the delivery or receipt of cash or shares. The settlement alternatives are at Duke Energy's election. No amounts have or will be recorded in Duke Energy's Condensed Consolidated Financial Statements with respect to the ATM offering until settlement of the equity forwards occurs, which is expected by December 31, 2025. The initial forward sale prices will be subject to adjustment on a daily basis based on a floating interest rate factor and will decrease by other fixed amounts specified in the relevant forward sale agreements. Until settlement of the equity forwards, earnings per share dilution resulting from the agreements, if any, will be determined under the treasury stock method.
v3.25.2
Employee Benefit Plans
 6 Months Ended
Jun. 30, 2025
Retirement Benefits [Abstract]  
Employee Benefit Plans EMPLOYEE BENEFIT PLANS
DEFINED BENEFIT RETIREMENT PLANS
Duke Energy and certain subsidiaries maintain, and the Subsidiary Registrants participate in, qualified and non-qualified, non-contributory defined benefit retirement plans. Duke Energy's policy is to fund amounts on an actuarial basis to provide assets sufficient to meet benefit payments to be paid to plan participants.
QUALIFIED PENSION PLANS
The following tables include the components of net periodic pension costs for qualified pension plans.
Three Months Ended June 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$27 $9 $8 $4 $3 $1 $2 $1 
Interest cost on projected benefit obligation82 20 26 12 15 4 6 2 
Expected return on plan assets(149)(38)(55)(25)(30)(6)(10)(5)
Amortization of actuarial loss15 3 4 2 2 — 1 1 
Amortization of prior service credit(3)— — — — — (1)(1)
Amortization of settlement charges7 3 2 2 — — 1 1 
Net periodic pension costs$(21)$(3)$(15)$(5)$(10)$(1)$(1)$(1)
Three Months Ended June 30, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$29 $10 $8 $5 $4 $— $1 $1 
Interest cost on projected benefit obligation83 20 26 12 14 4 7 3 
Expected return on plan assets(154)(40)(54)(25)(29)(7)(11)(5)
Amortization of actuarial loss8 2 3 2 1 1 1 — 
Amortization of prior service credit(4)— — — — — (1)(2)
Amortization of settlement charges4 2 1 1 1 — 1 1 
Net periodic pension costs$(34)$(6)$(16)$(5)$(9)$(2)$(2)$(2)
Six Months Ended June 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$54 $18 $15 $9 $6 $1 $3 $2 
Interest cost on projected benefit obligation164 39 52 23 29 8 13 5 
Expected return on plan assets(298)(76)(110)(49)(60)(11)(20)(10)
Amortization of actuarial loss30 7 9 4 4 1 2 2 
Amortization of prior service credit(6)— — — — — (1)(3)
Amortization of settlement charges13 6 4 3 1 — 1 2 
Net periodic pension costs$(43)$(6)$(30)$(10)$(20)$(1)$(2)$(2)
Six Months Ended June 30, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$57 $19 $16 $10 $7 $1 $3 $2 
Interest cost on projected benefit obligation165 40 52 24 28 8 13 5 
Expected return on plan assets(308)(81)(108)(50)(58)(13)(21)(10)
Amortization of actuarial loss16 4 5 3 2 1 2 1 
Amortization of prior service credit(7)— — — — — (1)(4)
Amortization of settlement charges9 4 2 2 1 — 1 2 
Net periodic pension costs$(68)$(14)$(33)$(11)$(20)$(3)$(3)$(4)
NON-QUALIFIED PENSION PLANS
Net periodic pension costs for non-qualified pension plans were not material for the three and six months ended June 30, 2025, and 2024.
OTHER POST-RETIREMENT BENEFIT PLANS
Net periodic costs for OPEB plans were not material for the three and six months ended June 30, 2025, and 2024.
v3.25.2
Income Taxes
 6 Months Ended
Jun. 30, 2025
Income Tax Disclosure [Abstract]  
Income Taxes INCOME TAXES
The IRA established transferability markets for tax credits including nuclear PTCs, solar PTCs and ITCs. In April 2025, agreements were executed for the sale of approximately $643 million in net tax credits under the IRA. The sale primarily includes estimated nuclear PTCs of $478 million at Duke Energy Carolinas and $69 million at Duke Energy Progress, as well as estimated solar PTCs of $58 million at Duke Energy Florida to be earned through the end of 2025. Proceeds for the sale of the nuclear PTCs are expected to be received in November 2025.
On July 4, 2025, the One Big Beautiful Bill Act (OBBBA) was signed into law which, among other things, modified tax legislation affecting clean energy tax credits. While transferability was preserved for tax credits established by the IRA, including the nuclear PTC, which remains available through 2032, the legislation phases out or terminates certain tax credits sooner than previously scheduled. To remain eligible for the PTC or ITC, solar and wind facilities must be placed in service by December 31, 2027, unless construction begins by July 4, 2026. For other types of facilities, the credits continue to be available at full value if construction begins by December 31, 2033, although there are new prohibited foreign entity restrictions. The OBBBA did not change the federal corporate income tax rate and did not require the remeasurement of deferred tax assets or liabilities. While Duke Energy does not expect material current year impacts to the results of operations, financial position or cash flows for the Duke Energy Registrants as a result of the OBBBA being signed into law in the third quarter of 2025, the Company will continue to evaluate the future impact of this tax law change as additional information and guidance becomes available.
EFFECTIVE TAX RATES
The ETRs from continuing operations for each of the Duke Energy Registrants are included in the following table.
Three Months EndedSix Months Ended
June 30,June 30,
2025202420252024
Duke Energy10.6 %13.1 %11.5 %13.2 %
Duke Energy Carolinas7.8 %10.9 %8.5 %11.2 %
Progress Energy15.1 %16.6 %15.9 %16.6 %
Duke Energy Progress12.4 %14.9 %13.6 %14.9 %
Duke Energy Florida19.1 %19.5 %19.4 %19.5 %
Duke Energy Ohio15.8 %17.2 %17.2 %17.0 %
Duke Energy Indiana13.3 %16.7 %12.9 %16.9 %
Piedmont44.4 %20.0 %19.5 %19.6 %
The decrease in the ETR for Duke Energy for the three and six months ended June 30, 2025, was primarily due to an increase in the amortization of income tax credits and lower state tax expense.
The decrease in the ETR for Duke Energy Carolinas for the three and six months ended June 30, 2025, was primarily due to an increase in the amortization of income tax credits and lower state tax expense.
The decrease in the ETR for Progress Energy for the three months ended June 30, 2025, was primarily due to lower state tax expense.
The decrease in the ETR for Duke Energy Progress for the three and six months ended June 30, 2025, was primarily due to lower state tax expense.
The decrease in the ETR for Duke Energy Ohio for the three months ending June 30, 2025, was primarily due to an increase in AFUDC equity.
The decrease in the ETR for Duke Energy Indiana for the three and six months ended June 30, 2025, was primarily due to an increase in the amortization of EDIT.
The increase in the ETR for Piedmont for the three months ending June 30, 2025, was primarily due to higher state tax benefits in relation to pretax losses.
v3.25.2
Pay vs Performance Disclosure - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Pay vs Performance Disclosure        
Net Income (Loss) $ 984 $ 900 $ 2,363 $ 2,038
v3.25.2
Insider Trading Arrangements
 3 Months Ended
Jun. 30, 2025
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
v3.25.2
Organization and Basis of Presentation (Policies)
 6 Months Ended
Jun. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Basis of Presentation
BASIS OF PRESENTATION
These Condensed Consolidated Financial Statements have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Regulation S-X. Accordingly, these Condensed Consolidated Financial Statements do not include all information and notes required by GAAP for annual financial statements and should be read in conjunction with the Consolidated Financial Statements in Duke Energy's Annual Report on Form 10-K for the year ended December 31, 2024.
The information in these combined notes relates to each of the Duke Energy Registrants as noted in the Index to Combined Notes to Condensed Consolidated Financial Statements. However, none of the registrants make any representations as to information related solely to Duke Energy or the subsidiaries of Duke Energy other than itself.
These Condensed Consolidated Financial Statements, in the opinion of the respective companies’ management, reflect all normal recurring adjustments necessary to fairly present the financial position and results of operations of each of the Duke Energy Registrants. Amounts reported in Duke Energy’s interim Condensed Consolidated Statements of Operations and each of the Subsidiary Registrants’ interim Condensed Consolidated Statements of Operations and Comprehensive Income are not necessarily indicative of amounts expected for the respective annual periods due to effects of seasonal temperature variations on energy consumption, regulatory rulings, timing of maintenance on electric generating units, changes in mark-to-market valuations, changing commodity prices and other factors.
In preparing financial statements that conform to GAAP, management must make estimates and assumptions that affect the reported amounts of assets and liabilities, the reported amounts of revenues and expenses and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates.
Basis of Consolidation
BASIS OF CONSOLIDATION
These Condensed Consolidated Financial Statements include, after eliminating intercompany transactions and balances, the accounts of the Duke Energy Registrants and subsidiaries or VIEs where the respective Duke Energy Registrants have control. See Note 12 for additional information on VIEs. These Condensed Consolidated Financial Statements also reflect the Duke Energy Registrants’ proportionate share of certain jointly owned generation and transmission facilities.
Discontinued Operations
Discontinued Operations
Duke Energy has elected to present cash flows of discontinued operations combined with cash flows of continuing operations. Unless otherwise noted, the notes to these condensed consolidated financial statements exclude amounts related to discontinued operations for all periods presented. A portion of NCI on Duke Energy's Condensed Consolidated Balance Sheet as of December 31, 2024, relates to discontinued operations. See Note 2 for discussion of discontinued operations related to the Commercial Renewables Disposal Groups.
Cash, Cash Equivalents, and Restricted Cash
CASH, CASH EQUIVALENTS AND RESTRICTED CASH
Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress and Duke Energy Florida have restricted cash balances related primarily to collateral assets, escrow deposits and VIEs. See Notes 10 and 12 for additional information. Restricted cash amounts are included in Other within Current Assets and Other within Noncurrent Assets on the Condensed Consolidated Balance Sheets.
Accounts Payable
ACCOUNTS PAYABLE
Duke Energy has a voluntary supply chain finance program (the “program”) that allows Duke Energy suppliers, at their sole discretion, to sell their receivables from Duke Energy to a global financial institution at a rate that leverages Duke Energy’s credit rating and which may result in favorable terms compared to the rate available to the supplier on their own credit rating. Suppliers participating in the program determine at their sole discretion which invoices they will sell to the financial institution. Suppliers’ decisions on which invoices are sold do not impact Duke Energy’s payment terms, which are based on commercial terms negotiated between Duke Energy and the supplier regardless of program participation. The commercial terms negotiated between Duke Energy and its suppliers are consistent regardless of whether the supplier elects to participate in the program. Duke Energy does not issue any guarantees with respect to the program and does not participate in negotiations between suppliers and the financial institution. Duke Energy does not have an economic interest in the supplier’s decision to participate in the program and receives no interest, fees or other benefit from the financial institution based on supplier participation in the program.
New Accounting Standards
NEW ACCOUNTING STANDARDS
The following new accounting standards have been issued but not yet adopted by the Duke Energy Registrants as of June 30, 2025.
Improvements to Income Tax Disclosures. In December 2023, the Financial Accounting Standards Board (FASB) issued new accounting guidance to enhance income tax disclosures primarily related to existing rate reconciliation and income taxes paid information to include requiring disclosure at a more disaggregated level in the notes to the financial statements. The Duke Energy Registrants plan to adopt this guidance on a prospective basis as of January 1, 2025 in the Company's 2025 Form 10-K, Duke Energy is currently assessing the implementation of this guidance on the financial statement disclosures, but it will have no impact on the results of operations, cash flows or financial condition.
Disaggregation of Income Statement Expenses. In November 2024, the FASB issued new accounting guidance that requires enhanced disclosures of certain costs and expenses. This new guidance does not change the expense captions presented on the face of the Condensed Consolidated Statements of Operations but requires disaggregation of certain expense captions into specified categories in disclosures within the notes to the financial statements. For Duke Energy Registrants, the amendments will be effective for fiscal years beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027, with early adoption permitted. Duke Energy is currently assessing implementation of this guidance on the financial statement disclosures, but it will have no impact on the results of operations, cash flows or financial condition.
Environmental Costs Liabilities are recorded when losses become probable and are reasonably estimable.Costs are typically expensed as Operation, maintenance and other on the Condensed Consolidated Statements of Operations unless regulatory recovery of the costs is deemed probable.
Derivatives
Duke Energy’s interest rate swaps for its regulated operations employ regulatory accounting. With regulatory accounting, the mark-to-market gains or losses on the swaps are deferred as regulatory liabilities or regulatory assets, respectively. Regulatory assets and liabilities are amortized consistent with the treatment of the related costs in the ratemaking process. The accrual of interest on the swaps is recorded as Interest Expense on the Duke Energy Registrant's Condensed Consolidated Statements of Operations and Comprehensive Income.
Undesignated Contracts
For the Subsidiary Registrants, bulk power electricity and natural gas purchases flow through fuel adjustment clauses, formula-based contracts or other cost-sharing mechanisms. Differences between the costs included in rates and the incurred costs, including undesignated derivative contracts, are largely deferred as regulatory assets or regulatory liabilities. Piedmont policies allow for the use of financial instruments to hedge commodity price risks. The strategy and objective of these hedging programs are to use the financial instruments to reduce natural gas cost volatility for customers.
Investments As a result, the ability to hold investments in unrealized loss positions is outside the control of the Duke Energy Registrants. Accordingly, all unrealized losses associated with debt securities within the Investment Trusts are recognized immediately and deferred to regulatory accounts where appropriate.Unrealized gains and losses on all other AFS securities are included in other comprehensive income until realized, unless it is determined the carrying value of an investment has a credit loss. The Duke Energy Registrants analyze all investment holdings each reporting period to determine whether a decline in fair value is related to a credit loss. If a credit loss exists, the unrealized credit loss is included in earnings.
Revenue from Contract with Customer Duke Energy earns substantially all of its revenues through its reportable segments, EU&I and GU&I.
Earnings Per Share
Basic EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the weighted average number of common shares outstanding during the period. Diluted EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the diluted weighted average number of common shares outstanding during the period. Diluted EPS reflects the potential dilution that could occur if securities or other agreements to issue common stock, such as equity forward sale agreements or convertible debt, were exercised or settled. Duke Energy applies the if-converted method for calculating any potential dilutive effect of the conversion of the outstanding convertible notes on diluted EPS, if applicable. Duke Energy’s participating securities are restricted stock units that are entitled to dividends declared on Duke Energy common stock during the restricted stock unit’s vesting periods. Dividends declared on preferred stock are recorded on the Condensed Consolidated Statements of Operations as a reduction of net income to arrive at net income available to Duke Energy common stockholders. Dividends accumulated on preferred stock are an adjustment to net income used in the calculation of basic and diluted EPS.
v3.25.2
Organization and Basis of Presentation (Tables)
 6 Months Ended
Jun. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Cash, Cash Equivalents and Restricted Cash The following table presents the components of cash, cash equivalents and restricted cash included in the Condensed Consolidated Balance Sheets.
June 30, 2025December 31, 2024
DukeDukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyDukeEnergyProgressEnergyEnergy
EnergyCarolinasEnergyProgressFlorida
Energy
CarolinasEnergyProgressFlorida
Current Assets
Cash and cash equivalents$344 $7 $58 $24 $16 $314 $6 $73 $24 $33 
Other75 9 66 37 28 84 9 76 40 35 
Other Noncurrent Assets
Other23 1 11 5 7 20 1 11 5 7 
Total cash, cash equivalents and restricted cash$442 $17 $135 $66 $51 $418 $16 $160 $69 $75 
Schedule of Utility Inventory The components of inventory are presented in the tables below.
 June 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Materials and supplies $3,403 $1,139 $1,660 $1,059 $601 $148 $406 $13 
Coal738 339 235 158 76 22 142 — 
Natural gas, oil and other fuel293 46 195 106 90 11 2 38 
Total inventory $4,434 $1,524 $2,090 $1,323 $767 $181 $550 $51 
 December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions) EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Materials and supplies $3,387 $1,150 $1,649 $1,074 $576 $149 $389 $11 
Coal801 341 241 164 77 23 196 — 
Natural gas, oil and other fuel321 45 196 103 92 11 1 67 
Total inventory $4,509 $1,536 $2,086 $1,341 $745 $183 $586 $78 
Schedule of Accounts Payable Finance Program
The following table presents the amounts included within Accounts payable on the Condensed Consolidated Balance Sheets sold to the financial institution by our suppliers and the supplier invoices sold to the financial institution under the program included within Net cash provided by operating activities on the Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2025, and 2024.
Three Months Ended June 30, 2024 and 2025
Duke
(in millions)EnergyPiedmont
Confirmed obligations outstanding at March 31, 2024
$76 $74 
Invoices confirmed during the period63 63 
Confirmed invoices paid during the period(111)(109)
Confirmed obligations outstanding at June 30, 2024
$28 $28 
Confirmed obligations outstanding at March 31, 2025
$18 $18 
Invoices confirmed during the period14 12 
Confirmed invoices paid during the period(20)(18)
Confirmed obligations outstanding at June 30, 2025
$12 $12 
Six Months Ended June 30, 2024 and 2025
Duke
(in millions)EnergyPiedmont
Confirmed obligations outstanding at December 31, 2023
$50 $47 
Invoices confirmed during the period120 119 
Confirmed invoices paid during the period(142)(138)
Confirmed obligations outstanding at June 30, 2024
$28 $28 
Confirmed obligations outstanding at December 31, 2024
$13 $12 
Invoices confirmed during the period32 30 
Confirmed invoices paid during the period(33)(30)
Confirmed obligations outstanding at June 30, 2025
$12 $12 
v3.25.2
Dispositions (Tables)
 6 Months Ended
Jun. 30, 2025
Discontinued Operations and Disposal Groups [Abstract]  
Schedule of Dispositions
The following table presents the carrying values of the major classes of Assets held for sale and Liabilities associated with assets held for sale included in Duke Energy's Condensed Consolidated Balance Sheets.
(in millions)June 30, 2025December 31, 2024
Current Assets Held for Sale
Other$— $4 
Total current assets held for sale— 4 
Noncurrent Assets Held for Sale
Property, Plant and Equipment
Cost— 109 
Accumulated depreciation and amortization— (24)
Net property, plant and equipment— 85 
Operating lease right-of-use assets, net— 4 
Total other noncurrent assets held for sale— 4 
Total Assets Held for Sale$— $93 
Current Liabilities Associated with Assets Held for Sale
Accounts payable$18 $19 
Taxes accrued— 1 
Current maturities of long-term debt— 43 
Unrealized losses on commodity hedges
— 13 
Other— 4 
Total current liabilities associated with assets held for sale18 80 
Noncurrent Liabilities Associated with Assets Held for Sale
Operating lease liabilities— 5 
Asset retirement obligations— 5 
Unrealized losses on commodity hedges
— 66 
Other— 13 
Total other noncurrent liabilities associated with assets held for sale— 89 
Total Liabilities Associated with Assets Held for Sale$18 $169 
The following table presents the results of the Commercial Renewables Disposal Groups, which are included in Loss from Discontinued Operations, net of tax in Duke Energy's Condensed Consolidated Statements of Operations.
Three Months Ended
Six Months Ended
June 30,
June 30,
(in millions)2025202420252024
Operating revenues$— $13 $4 $7 
Operation, maintenance and other— 121 16
Property and other taxes— 1 — 1
Interest expense— — — 2
Loss on disposal
— 15 4 5 
Loss before income taxes— (15)(1)(17)
Income tax expense (benefit)
1 (5)— (4)
Net loss from discontinued operations attributable to Duke Energy Corporation
$(1)$(10)$(1)$(13)
The following table summarizes Duke Energy's cash flows from discontinued operations related to the Commercial Renewables Disposal Groups.
Six Months Ended
June 30,
(in millions)20252024
Cash flows (used in) provided by:
Operating activities$(3)$7 
Investing activities— (13)
v3.25.2
Business Segments (Tables)
 6 Months Ended
Jun. 30, 2025
Segment Reporting Information [Line Items]  
Business Segment Information
Business segment information is presented in the following tables. Segment assets presented exclude intercompany assets.
Three Months Ended June 30, 2025
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Unaffiliated revenues$7,030 $471 $7,501 $7 $— $7,508 
Intersegment revenues15 22 37 33 (70)— 
Total operating revenues
$7,045 $493 $7,538 $40 $(70)$7,508 
Less:
Fuel used in electric generation and purchased power$1,898 $— $1,898 $— $(20)$1,878 
Cost of natural gas— 158 158 — — 158 
Operation, maintenance and other1,594 129 1,723 (23)(45)1,655 
Depreciation and amortization1,402 112 1,514 77 (8)1,583 
Property and other taxes371 41 412 3 — 415 
Impairment of assets and other charges(1)— (1)5 (1)3 
Interest expense535 65 600 318 (21)897 
Income tax expense (benefit)200 (4)196 (77)— 119 
Other Segment Items
Noncontrolling interests(a)
23 — 23 — — 23 
Preferred dividends— — — 13 — 13 
Add: Equity in earnings of unconsolidated affiliates
— 1 1 9 1 11 
Add: Other(b)
171 13 184 39 (26)197 
Segment income (loss)
$1,194 $6 $1,200 $(228)$— $972 
Discontinued Operations
(1)
Net income available to Duke Energy Corporation Common Stockholders
$971 
Add back: Net income attributable to noncontrolling interest
23 
Add back: Preferred dividends
13 
Net Income
$1,007 
Three Months Ended June 30, 2024
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Unaffiliated revenues$6,802 $359 $7,161 $11 $— $7,172 
Intersegment revenues18 22 40 29 (69)— 
Total operating revenues
$6,820 $381 $7,201 $40 $(69)$7,172 
Less:
Fuel used in electric generation and purchased power$2,247 $— $2,247 $— $(19)$2,228 
Cost of natural gas— 78 78 — — 78 
Operation, maintenance and other1,262 117 1,379 (8)(51)1,320 
Depreciation and amortization1,246 96 1,342 73 (6)1,409 
Property and other taxes351 38 389 4 — 393 
Impairment of assets and other charges42 — 42 1 — 43 
Interest expense488 61 549 306 (31)824 
Income tax expense (benefit)214 2 216 (77)1 140 
Other Segment Items
Noncontrolling interests(a)
22 — 22 — (1)21 
Preferred dividends— — — 14 — 14 
Add: Equity in earnings of unconsolidated affiliates
1 — 1 19 1 21 
Add: Other(b)
141 17 158 54 (39)173 
Segment income (loss)(c)
$1,090 $6 $1,096 $(200)$— $896 
Discontinued Operations
(10)
Net income available to Duke Energy Corporation Common Stockholders
$886 
Add back: Net Income available to noncontrolling interest
21 
Add back: Preferred dividends
14 
Net Income
$921 
(a)Net income attributable to NCI related to continuing operations.
(b)    Other for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net.
(c)    EU&I includes $42 million recorded within Impairment of assets and other charges, $2 million within Operations, maintenance and other, and an $11 million reduction recorded within Interest Expense on Duke Energy Carolinas' and Duke Energy Progress' Condensed Consolidated Statement of Operations, related to the 2024 South Carolina rate case order.
Six Months Ended June 30, 2025
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Unaffiliated revenues$14,155 $1,587 $15,742 $15 $— $15,757 
Intersegment revenues30 46 76 67 (143)— 
Total operating revenues
$14,185 $1,633 $15,818 $82 $(143)$15,757 
Less:
Fuel used in electric generation and purchased power$4,017 $— $4,017 $— $(40)$3,977 
Cost of natural gas— 532 532 — — 532 
Operation, maintenance and other3,018 254 3,272 (21)(97)3,154 
Depreciation and amortization2,736 219 2,955 154 (14)3,095 
Property and other taxes749 88 837 6 — 843 
Impairment of assets and other charges(1)— (1)5 (1)3 
Interest expense1,065 130 1,195 636 (45)1,786 
Income tax expense (benefit)389 87 476 (164)— 312 
Other Segment Items
Noncontrolling interests(a)
48 — 48 — — 48 
Preferred dividends— — — 27 — 27 
Add: Equity in earnings of unconsolidated affiliates
— 6 6 15 1 22 
Add: Other(b)
306 26 332 58 (55)335 
Segment income (loss)
$2,470 $355 $2,825 $(488)$— $2,337 
Discontinued Operations
(1)
Net income available to Duke Energy Corporation Common Stockholders
$2,336 
Add back: Net income attributable to noncontrolling interest
48 
Add back: Preferred dividends
27 
Net Income
$2,411 
Capital investments expenditures and acquisitions$5,724 $548 $6,272 $156 $— $6,428 
Segment assets
167,420 18,305 185,725 3,988 — 189,713 
Six Months Ended June 30, 2024
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Unaffiliated revenues$13,587 $1,238 $14,825 $18 $— $14,843 
Intersegment revenues36 45 81 60 (141)— 
Total operating revenues
$13,623 $1,283 $14,906 $78 $(141)$14,843 
Less:
Fuel used in electric generation and purchased power$4,602 $— $4,602 $— $(39)$4,563 
Cost of natural gas— 310 310 — — 310 
Operation, maintenance and other2,578 246 2,824 (26)(99)2,699 
Depreciation and amortization2,471 194 2,665 144 (13)2,796 
Property and other taxes688 84 772 7 — 779 
Impairment of assets and other charges43 — 43 1 — 44 
Interest expense987 122 1,109 600 (68)1,641 
Income tax expense (benefit)387 71 458 (141)1 318 
Other Segment Items
Noncontrolling interests(a)
35 — 35 — (1)34 
Preferred dividends— — — 53 — 53 
Add: Equity in earnings of unconsolidated affiliates
2 — 2 36 — 38 
Add: Other(b)
277 34 311 121 (78)354 
Segment income (loss)(c)
$2,111 $290 $2,401 $(403)$— $1,998 
Discontinued Operations
(13)
Net income available to Duke Energy Corporation Common Stockholders
$1,985 
Add back: Net Income available to noncontrolling interest
34 
Add back: Preferred dividends
53 
Net Income
$2,072 
Capital investments expenditures and acquisitions$5,349 $723 $6,072 $140 $— $6,212 
Segment assets
159,770 17,600 177,370 4,205 — 181,575 
(a)Net income attributable to NCI related to continuing operations.
(b)    Other for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net.
(c)    EU&I includes $42 million recorded within Impairment of assets and other charges, $2 million within Operations, maintenance and other, and an $11 million reduction recorded within Interest Expense on Duke Energy Carolinas' and Duke Energy Progress' Condensed Consolidated Statement of Operations, related to the 2024 South Carolina rate case order.
Duke Energy Carolinas  
Segment Reporting Information [Line Items]  
Business Segment Information
Duke Energy Carolinas has one reportable segment, EU&I. The remainder of Duke Energy Carolinas' operations is presented as Other.
Three Months Ended June 30, 2025Six Months Ended June 30, 2025
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$2,231 $— $2,231 $4,755 $— $4,755 
Less:
Fuel used in electric generation and purchased power$571 $— $571 $1,374 $— $1,374 
Operation, maintenance and other488 12 500 962 22 984 
Depreciation and amortization482 — 482 914 — 914 
Property and other taxes85 — 85 187 — 187 
Impairment of assets and other charges(1)— (1)(1)— (1)
Interest expense200 — 200 400 — 400 
Income tax expense (benefit)39 (3)36 92 (5)87 
Add: Other segment items(a)
68 (1)67 129 (1)128 
Segment income (loss) / Net income$435 $(10)$425 $956 $(18)$938 
Capital expenditures$2,145 $— $2,145 
Segment assets56,335 264 56,599 
Three Months Ended June 30, 2024Six Months Ended June 30, 2024
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$2,297 $— $2,297 $4,704 $— $4,704 
Less:
Fuel used in electric generation and purchased power$749 $— $749 $1,609 $— $1,609 
Operation, maintenance and other434 10 444 874 21 895 
Depreciation and amortization437 — 437 834 — 834 
Property and other taxes89 — 89 183 — 183 
Impairment of assets and other charges33 — 33 34 — 34 
Interest expense168 — 168 348 — 348 
Income tax expense (benefit)51 (3)48 109 (5)104 
Add: Other segment items(a)
63 (1)62 125 (1)124 
Segment income (loss) / Net income$399 $(8)$391 $838 $(17)$821 
Capital expenditures$1,949 $— $1,949 
Segment assets53,160 214 53,374 
(a)    Other segment items include Gains on sales of other assets and other, net, and Other income and expenses, net.
Progress Energy  
Segment Reporting Information [Line Items]  
Business Segment Information
Progress Energy has one reportable segment, EU&I. The remainder of Progress Energy's operations is presented as Other.
Three Months Ended June 30, 2025Six Months Ended June 30, 2025
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$3,566 $3 $3,569 $7,028 $8 $7,036 
Less:
Fuel used in electric generation and purchased power$1,025 $— $1,025 $2,131 $— $2,131 
Operation, maintenance and other828 15 843 1,501 30 1,531 
Depreciation and amortization609 — 609 1,240 — 1,240 
Property and other taxes175 — 175 347 — 347 
Interest expense255 28 283 501 57 558 
Income tax expense (benefit)121 (13)108 239 (21)218 
Add: Other segment items(a)
76 5 81 137 5 142 
Segment income (loss) / Net income$629 $(22)$607 $1,206 $(53)$1,153 
Capital expenditures$2,742 $— $2,742 
Segment assets69,489 4,822 74,311 
Three Months Ended June 30, 2024Six Months Ended June 30, 2024
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$3,352 $5 $3,357 $6,576 $9 $6,585 
Less:
Fuel used in electric generation and purchased power$1,202 $— $1,202 $2,345 $— $2,345 
Operation, maintenance and other571 17 588 1,187 29 1,216 
Depreciation and amortization568 — 568 1,155 — 1,155 
Property and other taxes167 (1)166 324 — 324 
Impairment of assets and other charges9 — 9 9 — 9 
Interest expense237 28 265 468 57 525 
Income tax expense (benefit)114 (10)104 209 (19)190 
Add: Other segment items(a)
56 10 66 117 18 135 
Segment income (loss) / Net income$540 $(19)$521 $996 $(40)$956 
Capital expenditures$2,623 $— $2,623 
Segment assets65,620 3,844 69,464 
(a)    Other segment items include Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Progress  
Segment Reporting Information [Line Items]  
Business Segment Information
Duke Energy Progress has one reportable segment, EU&I. The remainder of Duke Energy Progress' operations is presented as Other.
Three Months Ended June 30, 2025Six Months Ended June 30, 2025
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$1,681 $— $1,681 $3,699 $— $3,699 
Less:
Fuel used in electric generation and purchased power$574 $— $574 $1,299 $— $1,299 
Operation, maintenance and other333 7 340 724 14 738 
Depreciation and amortization319 — 319 676 — 676 
Property and other taxes45 — 45 105 — 105 
Interest expense139 — 139 267 — 267 
Income tax expense (benefit)40 (1)39 98 (3)95 
Add: Other segment items(a)
50 — 50 89 (2)87 
Segment income (loss) / Net income$281 $(6)$275 $619 $(13)$606 
Capital expenditures$1,524 $— $1,524 
Segment assets40,486 1,072 41,558 
Three Months Ended June 30, 2024Six Months Ended June 30, 2024
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$1,636 $— $1,636 $3,424 $— $3,424 
Less:
Fuel used in electric generation and purchased power$597 $— $597 $1,217 $— $1,217 
Operation, maintenance and other320 6 326 689 12 701 
Depreciation and amortization306 — 306 645 — 645 
Property and other taxes50 — 50 101 — 101 
Impairment of assets and other charges9 — 9 9 — 9 
Interest expense123 — 123 243 — 243 
Income tax expense (benefit)39 — 39 89 (2)87 
Add: Other segment items(a)
36 1 37 72 2 74 
Segment income (loss) / Net income$228 $(5)$223 $503 $(8)$495 
Capital expenditures$1,373 $— $1,373 
Segment assets38,562 99 38,661 
(a)    Other segment items include Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Florida  
Segment Reporting Information [Line Items]  
Business Segment Information
Duke Energy Florida has one reportable segment, EU&I. The remainder of Duke Energy Florida's operations is presented as Other.
Three Months Ended June 30, 2025Six Months Ended June 30, 2025
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$1,885 $— $1,885 $3,329 $— $3,329 
Less:
Fuel used in electric generation and purchased power$451 $— $451 $832 $— $832 
Operation, maintenance and other495 5 500 777 9 786 
Depreciation and amortization290 — 290 564 — 564 
Property and other taxes130 — 130 242 — 242 
Interest expense116 — 116 234 — 234 
Income tax expense (benefit)81 — 81 141 (2)139 
Add: Other segment items(a)
26 1 27 48 (2)46 
Segment income (loss) / Net income$348 $(4)$344 $587 $(9)$578 
Capital expenditures$1,218 $— $1,218 
Segment assets29,003 89 29,092 
Three Months Ended June 30, 2024Six Months Ended June 30, 2024
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$1,716 $— $1,716 $3,152 $— $3,152 
Less:
Fuel used in electric generation and purchased power$605 $— $605 $1,128 $— $1,128 
Operation, maintenance and other251 5 256 498 9 507 
Depreciation and amortization262 — 262 510 — 510 
Property and other taxes117 — 117 223 — 223 
Interest expense114 — 114 225 — 225 
Income tax expense (benefit)75 — 75 120 (2)118 
Add: Other segment items(a)
20 2 22 45 2 47 
Segment income (loss) / Net income$312 $(3)$309 $493 $(5)$488 
Capital expenditures$1,251 $— $1,251 
Segment assets27,058 20 27,078 
(a)    Other segment items include Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Ohio  
Segment Reporting Information [Line Items]  
Business Segment Information
Duke Energy Ohio has two reportable segments, EU&I and GU&I. The remainder of Duke Energy Ohio's operations is presented as Other.
Three Months Ended June 30, 2025
ElectricGasTotal
Utilities andUtilities andReportable
Eliminations/
(in millions)InfrastructureInfrastructureSegmentsOtherTotal
Total operating revenues
$498 $156 $654 $— $654 
Less:
Fuel used in electric generation and purchased power$161 $— $161 $— $161 
Cost of natural gas— 35 35 — 35 
Operation, maintenance and other87 27 114 1 115 
Depreciation and amortization83 39 122 (1)121 
Property and other taxes80 21 101 — 101 
Interest expense32 18 50 1 51 
Income tax expense (benefit)9 3 12 — 12 
Add: Other segment items(a)
4 2 6 — 6 
Segment income (loss) / Net income
$50 $15 $65 $(1)$64 
Three Months Ended June 30, 2024
ElectricGasTotal
Utilities andUtilities andReportable
Eliminations/
(in millions)InfrastructureInfrastructureSegmentsOtherTotal
Total operating revenues
$476 $132 $608 $— $608 
Less:
Fuel used in electric generation and purchased power$132 $— $132 — $132 
Cost of natural gas— 21 21 — 21 
Operation, maintenance and other88 30 118 3 121 
Depreciation and amortization65 31 96 — 96 
Property and other taxes80 22 102 — 102 
Interest expense32 17 49 (2)47 
Income tax expense (benefit)13 4 17 (1)16 
Add: Other segment items(a)
3 2 5 (1)4 
Segment income (loss) / Net income$69 $9 $78 $(1)$77 
(a)    Other segment items for EU&I and GU&I include Gains on sales of other assets and other, net, and Other income and expenses, net.
Six Months Ended June 30, 2025
ElectricGasTotal
Utilities andUtilities andReportable
Eliminations/
(in millions)InfrastructureInfrastructureSegmentsOtherTotal
Total operating revenues
$985 $435 $1,420 $— $1,420 
Less:
Fuel used in electric generation and purchased power$310 $— $310 $— $310 
Cost of natural gas— 136 136 — 136 
Operation, maintenance and other179 56 235 4 239 
Depreciation and amortization159 75 234 (1)233 
Property and other taxes166 51 217 — 217 
Interest expense63 34 97 1 98 
Income tax expense (benefit)18 17 35 (1)34 
Add: Other segment items(a)
8 4 12 (1)11 
Segment income (loss) / Net income
$98 $70 $168 $(4)$164 
Capital expenditures$303 $168 $471 $— $471 
Segment assets8,378 4,582 12,960 36 12,996 
Six Months Ended June 30, 2024
ElectricGasTotal
Utilities andUtilities andReportable
Eliminations/
(in millions)InfrastructureInfrastructureSegmentsOtherTotal
Total operating revenues
$934 $352 $1,286 $— $1,286 
Less:
Fuel used in electric generation and purchased power$270 $— $270 — $270 
Cost of natural gas— 82 82 — 82 
Operation, maintenance and other181 62 243 4 247 
Depreciation and amortization131 64 195 — 195 
Property and other taxes151 53 204 — 204 
Interest expense61 32 93 (1)92 
Income tax expense (benefit)23 13 36 (1)35 
Add: Other segment items(a)
7 4 11 (1)10 
Segment income (loss) / Net income
$124 $50 $174 $(3)$171 
Capital expenditures$273 $144 $417 $— $417 
Segment assets8,034 4,389 12,423 178 12,601 
(a)    Other segment items for EU&I and GU&I include Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Indiana  
Segment Reporting Information [Line Items]  
Business Segment Information
Duke Energy Indiana has one reportable segment, EU&I. The remainder of Duke Energy Indiana's operations is presented as Other.
Three Months Ended June 30, 2025Six Months Ended June 30, 2025
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$821 $— $821 $1,679 $— $1,679 
Less:
Fuel used in electric generation and purchased power$219 $— $219 $479 $— $479 
Operation, maintenance and other189 3 192 382 5 387 
Depreciation and amortization222 — 222 414 — 414 
Property and other taxes17 — 17 35 — 35 
Interest expense56 1 57 116 — 116 
Income tax expense (benefit)20 (2)18 38 (2)36 
Add: Other segment items(a)
22 (1)21 32 (1)31 
Segment income (loss) / Net income$120 $(3)$117 $247 $(4)$243 
Capital expenditures$526 $— $526 
Segment assets15,940 240 16,180 
Three Months Ended June 30, 2024Six Months Ended June 30, 2024
ElectricElectric
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$747 $— $747 $1,506 $— $1,506 
Less:
Fuel used in electric generation and purchased power$223 $— $223 $494 $— $494 
Operation, maintenance and other161 — 161 339 2 341 
Depreciation and amortization172 — 172 341 — 341 
Property and other taxes16 — 16 30 — 30 
Interest expense58 — 58 115 — 115 
Income tax expense (benefit)22 — 22 36 — 36 
Add: Other segment items(a)
16 (1)15 29 (1)28 
Segment income (loss) / Net income$111 $(1)$110 $180 $(3)$177 
Capital expenditures$489 $— $489 
Segment assets15,590 59 15,649 
(a)    Other segment items include Gains on sales of other assets and other, net, and Other income and expenses, net.
Piedmont  
Segment Reporting Information [Line Items]  
Business Segment Information
Piedmont has one reportable segment, GU&I. The remainder of Piedmont's operations is presented as Other.
Three Months Ended June 30, 2025Six Months Ended June 30, 2025
Gas
Gas
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$335 $— $335 $1,192 $— $1,192 
Less:
Cost of natural gas$124 $— $124 $396 $— $396 
Operation, maintenance and other101 2 103 195 4 199 
Depreciation and amortization71 — 71 141 — 141 
Property and other taxes19 — 19 37 — 37 
Interest expense47 1 48 94 1 95 
Income tax (benefit) expense
(7)(1)(8)69 (1)68 
Other Segment Items
Add: Equity in earnings of unconsolidated affiliates— 1 1 — 3 3 
Add: Other(a)
11 — 11 22 — 22 
Segment (loss) income / Net (loss) income
$(9)$(1)$(10)$282 $(1)$281 
Capital expenditures$380 $— $380 
Segment assets11,844 87 11,931 
Three Months Ended June 30, 2024Six Months Ended June 30, 2024
Gas
Gas
Utilities andEliminations/Utilities andEliminations/
(in millions)InfrastructureOtherTotalInfrastructureOtherTotal
Total operating revenues
$244 $— $244 $920 $— $920 
Less:
Cost of natural gas$58 $— $58 $228 $— $228 
Operation, maintenance and other83 2 85 178 2 180 
Depreciation and amortization64 — 64 126 — 126 
Property and other taxes16 — 16 31 — 31 
Interest expense43 — 43 88 — 88 
Income tax (benefit) expense
(1)— (1)58 1 59 
Other Segment Items
Add: Equity in earnings of unconsolidated affiliates— 2 2 — 4 4 
Add: Other(a)
15 — 15 30 — 30 
Segment (loss) income / Net (loss) income
$(4)$— $(4)$241 $1 $242 
Capital expenditures$571 $— $571 
Segment assets11,208 93 11,301 
(a)    Other includes Gains on sales of other assets and other, net, and Other income and expenses, net.
v3.25.2
Commitments and Contingencies (Tables)
 6 Months Ended
Jun. 30, 2025
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Reserves
The following table contains information regarding reserves for probable and estimable costs related to the various environmental sites. These reserves are recorded in Accounts Payable within Other Current Liabilities and Other within Other Noncurrent Liabilities on the Condensed Consolidated Balance Sheets.
(in millions)June 30, 2025December 31, 2024
Reserves for Environmental Remediation
Duke Energy$73 $73 
Duke Energy Carolinas32 24 
Progress Energy19 19 
Duke Energy Progress9 9 
Duke Energy Florida10 10 
Duke Energy Ohio14 21 
Duke Energy Indiana2 2 
Piedmont6 7 
v3.25.2
Debt and Credit Facilities (Tables)
 6 Months Ended
Jun. 30, 2025
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments
The following table summarizes significant debt issuances (in millions).
Six Months Ended June 30, 2025
Duke DukeDukeDukeDukeDuke
MaturityInterestDukeEnergyEnergyEnergyEnergy EnergyEnergy
Issuance DateDateRateEnergy(Parent)CarolinasProgressFloridaOhioIndianaPiedmont
First Mortgage Bonds
January 2025(a)
March 2030
4.85 %$400 $— $400 $— $— $— $— $— 
January 2025(a)
March 2035
5.25 %700 — 700 — — — — — 
March 2025(b)
March 2027
4.35 %500 — — 500 — — — — 
March 2025(b)
March 2035
5.05 %850 — — 850 — — — — 
March 2025(b)
March 2055
5.55 %750 — — 750 — — — — 
May 2025(c)
May 2055
5.90 %300 — — — — — 300 — 
June 2025(d)
June 2035
5.30 %350 — — — — 350 — — 
Total issuances$3,850 $— $1,100 $2,100 $— $350 $300 $— 
(a)Proceeds were used to pay off the $500 million DERF accounts receivable securitization facility due January 2025, to pay off short-term debt and for general company purposes.
(b)Proceeds were used to pay off the $400 million DEPR accounts receivable securitization facility due April 2025, to pay off short-term debt and for general company purposes.
(c)Proceeds were used to pay down short-term debt and for general company purposes.
(d)Proceeds were used to pay off $150 million of maturities due June 2025, to pay off short-term debt and for general corporate purposes.
The following table shows the significant components of Current maturities of long-term debt on the Condensed Consolidated Balance Sheets. The Duke Energy Registrants currently anticipate satisfying these obligations with cash on hand and proceeds from additional borrowings.
(in millions)Maturity DateInterest RateJune 30, 2025
Unsecured Debt
Duke Energy (Parent)September 20250.900 %650 
Piedmont
September 20253.600 %150 
Duke Energy Florida Term Loan Facility(a)
October 20255.071 %800 
Duke Energy Ohio(b)
October 20253.230 %95 
Duke Energy (Parent)December 20255.000 %500 
Duke Energy (Parent) Convertible Senior Notes
April 20264.125 %1,725 
First Mortgage Bonds
Duke Energy Florida(a)(c)
October 2073
4.009 %200 
Duke Energy Florida(a)(c)
April 20744.009 %173 
Duke Energy ProgressAugust 20253.250 %500 
Other(d)
253 
Current maturities of long-term debt$5,046 
(a)Debt has a floating interest rate.
(b)Current maturity relates to Duke Energy Kentucky.
(c)These first mortgage bonds are classified as Current maturities of long-term debt on the Condensed Consolidated Balance Sheets based on terms of the indentures, which could require repayment in less than 12 months if exercised by the bondholders.
(d)Includes finance lease obligations, amortizing debt, tax-exempt bonds with mandatory put options and small bullet maturities.
Schedule of Line of Credit Facilities
The table below includes the current borrowing sublimits and available capacity under these credit facilities.
June 30, 2025
DukeDukeDukeDukeDukeDuke
DukeEnergyEnergyEnergyEnergyEnergyEnergy
(in millions)Energy(Parent)CarolinasProgressFloridaOhioIndianaPiedmont
Facility size(a)
$10,000 $3,925 $1,000 $1,125 $1,150 $950 $800 $1,050 
Reduction to backstop issuances
Commercial paper(b)
(3,017)(2,385)(300)(150)(1)(26)(150)(5)
Outstanding letters of credit(14)(2)(4)(1)(7)— — — 
Tax-exempt bonds(81)— — — — — (81)— 
Available capacity under the Master Credit Facility$6,888 $1,538 $696 $974 $1,142 $924 $569 $1,045 
(a)Represents the sublimit of each borrower.
(b)Duke Energy issued $625 million of commercial paper and loaned the proceeds through the money pool to Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana. The balances are classified as Long-Term Debt Payable to Affiliated Companies on the Condensed Consolidated Balance Sheets.
v3.25.2
Related Party Transactions (Tables)
 6 Months Ended
Jun. 30, 2025
Related Party Transactions [Abstract]  
Schedule of Related Party Transactions, Other Revenue and Expense Transactions with related parties included on the Condensed Consolidated Statements of Operations and Comprehensive Income are presented in the following table.
Three Months Ended June 30,Six Months Ended June 30,
(in millions)2025202420252024
Duke Energy Carolinas
Corporate governance and shared service expenses(a)
$157 $189 $335 $403 
Indemnification coverages(b)
14 11 27 22 
JDA revenue(c)
8 6 90 22 
JDA expense(c)
71 53 187 93 
Intercompany natural gas purchases(d)
2 5 4 9 
Progress Energy
Corporate governance and shared service expenses(a)
$141 $171 $291 $359 
Indemnification coverages(b)
16 15 32 29 
JDA revenue(c)
71 53 187 93 
JDA expense(c)
8 6 90 22 
Intercompany natural gas purchases(d)
19 18 38 37 
Duke Energy Progress
Corporate governance and shared service expenses(a)
$81 $100 $167 $214 
Indemnification coverages(b)
6 6 13 12 
JDA revenue(c)
71 53 187 93 
JDA expense(c)
8 6 90 22 
Intercompany natural gas purchases(d)
19 18 38 37 
Duke Energy Florida
Corporate governance and shared service expenses(a)
$60 $71 $124 $145 
Indemnification coverages(b)
10 9 19 17 
Duke Energy Ohio
Corporate governance and shared service expenses(a)
$70 $77 $134 $154 
Indemnification coverages(b)
2 1 3 3 
Duke Energy Indiana
Corporate governance and shared service expenses(a)
$73 $83 $144 $185 
Indemnification coverages(b)
3 3 5 5 
Piedmont
Corporate governance and shared service expenses(a)
$36 $40 $67 $81 
Indemnification coverages(b)
2 1 3 2 
Intercompany natural gas sales(d)
21 23 42 46 
Natural gas storage and transportation costs(e)
5 6 11 12 
(a)The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared services costs, primarily related to human resources, employee benefits, information technology, legal and accounting fees, as well as other third-party costs. These amounts are primarily recorded in Operation, maintenance and other and Impairment of assets and other charges on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(b)The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, maintenance and other on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(c)Duke Energy Carolinas and Duke Energy Progress participate in a JDA, which allows the collective dispatch of power plants between the service territories to reduce customer rates. Revenues from the sale of power and expenses from the purchase of power pursuant to the JDA are recorded in Operating Revenues and Fuel used in electric generation and purchased power, respectively, on the Condensed Consolidated Statements of Operations and Comprehensive Income.
(d)Piedmont provides long-term natural gas delivery service to certain Duke Energy Carolinas and Duke Energy Progress natural gas-fired generation facilities. Piedmont records the sales in Operating Revenues, and Duke Energy Carolinas and Duke Energy Progress record the related purchases as a component of Fuel used in electric generation and purchased power on their respective Condensed Consolidated Statements of Operations and Comprehensive Income.
(e)Piedmont has related party transactions as a customer of its equity method investments in Pine Needle LNG Company, LLC, Hardy Storage Company, LLC and Cardinal Pipeline Company, LLC natural gas storage and transportation facilities. These expenses are included in Cost of natural gas on Piedmont's Condensed Consolidated Statements of Operations and Comprehensive Income.The following table includes the balance of intercompany income tax receivables and payables for the Subsidiary Registrants.
DukeDukeDukeDukeDuke
EnergyProgressEnergyEnergyEnergyEnergy
(in millions)CarolinasEnergyProgressFloridaOhioIndianaPiedmont
June 30, 2025
Intercompany income tax receivable$— $— $16 $— $— $— $45 
Intercompany income tax payable$85 $119 $— $153 $15 $27 $— 
December 31, 2024
Intercompany income tax receivable$— $— $— $154 $— $— $— 
Intercompany income tax payable419 169 315 — 43 110 43 
v3.25.2
Derivatives and Hedging (Tables)
 6 Months Ended
Jun. 30, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Notional Amounts of Outstanding Derivative Positions
The following tables show notional amounts of outstanding derivatives related to interest rate risk.
June 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaIndianaOhio
Cash flow hedges$3,225 $— $— $— $— $— $— 
Undesignated contracts4,027 1,875 1,800 600 1,200 325 27 
Total notional amount$7,252 $1,875 $1,800 $600 $1,200 $325 $27 
December 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaIndianaOhio
Cash flow hedges$2,825 $— $— $— $— $— $— 
Undesignated contracts3,202 1,150 1,775 1,125 650 250 27 
Total notional amount$6,027 $1,150 $1,775 $1,125 $650 $250 $27 
The tables below include volumes of outstanding commodity derivatives. Amounts disclosed represent the absolute value of notional volumes of commodity contracts excluding NPNS. The Duke Energy Registrants have netted contractual amounts where offsetting purchase and sale contracts exist with identical delivery locations and times of delivery. Where all commodity positions are perfectly offset, no quantities are shown.
June 30, 2025
DukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergy
EnergyCarolinasEnergyProgressOhioIndianaPiedmont
Electricity (GWh)24,145 — — — 3,000 21,145 — 
Natural gas (millions of dekatherms)778 290 255 255 — 27 206 
December 31, 2024
DukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergy
EnergyCarolinasEnergyProgressOhioIndianaPiedmont
Electricity (GWh)12,229 — — — 1,287 10,942 — 
Natural gas (millions of dekatherms)779 276 246 246 — 32 225 
The following table shows Duke Energy's outstanding derivatives related to foreign currency risk at June 30, 2025.
Fair Value Gain (Loss)(a)
(in millions)
Pay NotionalReceive NotionalReceiveHedgeThree Months Ended June 30,Six Months Ended June 30,
(in millions)Pay Rate(in millions)RateMaturity Date2025202420252024
Fair value hedges
$645 4.75 %600 euros3.10 %June 2028$58 $(2)$86 $— 
537 5.31 %500 euros3.85 %June 203449 (2)72 — 
815 5.65 %750 
euros
3.75 %April 203173 (9)108 (9)
Total notional amount$1,997 1,850 euros$180 $(13)$266 $(9)
(a)    Amounts are recorded in Other Income and expenses, net on the Condensed Consolidated Statement of Operations, which offsets an equal translation adjustment of the foreign denominated debt. See the Condensed Consolidated Statements of Comprehensive Income for amounts excluded from the assessment of effectiveness for which the difference between changes in fair value and periodic amortization is recorded
Location and Fair Value of Derivatives Recognized in the Condensed Consolidated Balance Sheets
The following tables show the fair value and balance sheet location of derivative instruments. Although derivatives subject to master netting arrangements are netted on the Condensed Consolidated Balance Sheets, the fair values presented below are shown gross and cash collateral on the derivatives have not been netted against the fair values shown.
Derivative AssetsJune 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current$93 $37 $33 $33 $— $1 $21 $— 
Noncurrent90 45 45 45 — — — — 
Total Derivative Assets – Commodity Contracts$183 $82 $78 $78 $— $1 $21 $— 
Interest Rate Contracts
Designated as Hedging Instruments
Current$84 $— $— $— $— $— $— $— 
Noncurrent26 — — — — — — — 
Not Designated as Hedging Instruments
Current3 — 3 — 3 — — — 
Noncurrent48 28 21 13 7 — — — 
Total Derivative Assets – Interest Rate Contracts$161 $28 $24 $13 $10 $— $— $— 
Foreign Currency Contracts
Designated as Hedging Instruments
Noncurrent195 — — — — — — — 
Total Derivative Assets – Foreign Currency Contracts$195 $— $— $— $— $— $— $— 
Total Derivative Assets$539 $110 $102 $91 $10 $1 $21 $— 
Derivative LiabilitiesJune 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current$70 $35 $10 $10 $— $— $2 $24 
Noncurrent119 16 11 11 — — — 91 
Total Derivative Liabilities – Commodity Contracts$189 $51 $21 $21 $— $— $2 $115 
Interest Rate Contracts
Designated as Hedging Instruments
Current$5 $— $— $— $— $— $— $— 
Noncurrent2 — — — — — — — 
Not Designated as Hedging Instruments
Current12 — 11 — 11 — — — 
Noncurrent23 9 9 4 5 1 5 — 
Total Derivative Liabilities – Interest Rate Contracts$42 $9 $20 $4 $16 $1 $5 $— 
Foreign Currency Contracts
Designated as Hedging Instruments
Current25 — — — — — — — 
Total Derivative Liabilities – Foreign Currency Contracts$25 $— $— $— $— $— $— $— 
Total Derivative Liabilities$256 $60 $41 $25 $16 $1 $7 $115 
Derivative AssetsDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current$49 $20 $17 $17 $— $1 $8 $1 
Noncurrent60 29 32 32 — — — — 
Total Derivative Assets – Commodity Contracts$109 $49 $49 $49 $— $1 $8 $1 
Interest Rate Contracts
Designated as Hedging Instruments
Current108 — — — — — — — 
Noncurrent52 — — — — — — — 
Not Designated as Hedging Instruments
Current110 19 55 44 11 — 36 — 
Noncurrent50 26 23 16 7 — — — 
Total Derivative Assets – Interest Rate Contracts$320 $45 $78 $60 $18 $— $36 $— 
Foreign Currency Contracts
Designated as Hedging Instruments
Noncurrent5 — — — — — — — 
Total Derivative Assets – Foreign Currency Contracts
$5 $— $— $— $— $— $— $— 
Total Derivative Assets$434 $94 $127 $109 $18 $1 $44 $1 
Derivative LiabilitiesDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Commodity Contracts
Not Designated as Hedging Instruments
Current$108 $57 $32 $32 $— $— $3 $16 
Noncurrent134 31 24 24 — — — 78 
Total Derivative Liabilities – Commodity Contracts$242 $88 $56 $56 $— $— $3 $94 
Interest Rate Contracts
Not Designated as Hedging Instruments
Current2 — 2 1 1 — — — 
Noncurrent1 — — — — 1 — — 
Total Derivative Liabilities – Interest Rate Contracts$3 $— $2 $1 $1 $1 $— $— 
Foreign Currency Contracts
Designated as Hedging Instruments
Current35 — — — — — — — 
Noncurrent39 — — — — — — — 
Total Derivative Liabilities – Foreign Currency Contracts
$74 $— $— $— $— $— $— $— 
Total Derivative Liabilities$319 $88 $58 $57 $1 $1 $3 $94 
Offsetting Assets
The following tables present the line items on the Condensed Consolidated Balance Sheets where derivatives are reported. Substantially all of Duke Energy's outstanding derivative contracts are subject to enforceable master netting arrangements. The amounts shown are calculated by counterparty. Accounts receivable or accounts payable may also be available to offset exposures in the event of bankruptcy. These amounts are not included in the tables below.
Derivative AssetsJune 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$180 $37 $36 $33 $3 $1 $21 $— 
Offset
(20)(10)(10)(10)— — — — 
Net amounts presented in Current Assets: Other$160 $27 $26 $23 $3 $1 $21 $— 
Noncurrent
Gross amounts recognized$359 $73 $66 $58 $7 $— $— $— 
Offset
(23)(12)(12)(12)— — — — 
Net amounts presented in Other Noncurrent Assets: Other$336 $61 $54 $46 $7 $— $— $— 
Derivative LiabilitiesJune 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$112 $35 $21 $10 $11 $— $2 $24 
Offset
(20)(10)(10)(10)— — — — 
Cash collateral posted
(1)— — — — — (1)— 
Net amounts presented in Current Liabilities: Other$91 $25 $11 $— $11 $— $1 $24 
Noncurrent
Gross amounts recognized$144 $25 $20 $15 $5 $1 $5 $91 
Offset
(23)(12)(12)(12)— — — — 
Net amounts presented in Other Noncurrent Liabilities: Other$121 $13 $8 $3 $5 $1 $5 $91 
Derivative AssetsDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$267 $39 $72 $61 $11 $1 $44 $1 
Offset
(29)(15)(14)(14)— — — — 
Net amounts presented in Current Assets: Other$238 $24 $58 $47 $11 $1 $44 $1 
Noncurrent
Gross amounts recognized$167 $55 $55 $48 $7 $— $— $— 
Offset
(37)(19)(17)(17)— — — — 
Net amounts presented in Other Noncurrent Assets: Other$130 $36 $38 $31 $7 $— $— $— 
Derivative LiabilitiesDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$145 $57 $34 $33 $1 $— $3 $16 
Offset
(29)(15)(14)(14)— — — — 
Cash collateral posted
(3)(2)— — — — (1)— 
Net amounts presented in Current Liabilities: Other$113 $40 $20 $19 $1 $— $2 $16 
Noncurrent
Gross amounts recognized$174 $31 $24 $24 $— $1 $— $78 
Offset
(37)(19)(17)(17)— — — — 
Cash collateral posted
(4)(4)— — — — — — 
Net amounts presented in Other Noncurrent Liabilities: Other$133 $8 $7 $7 $— $1 $— $78 
Offsetting Liabilities
The following tables present the line items on the Condensed Consolidated Balance Sheets where derivatives are reported. Substantially all of Duke Energy's outstanding derivative contracts are subject to enforceable master netting arrangements. The amounts shown are calculated by counterparty. Accounts receivable or accounts payable may also be available to offset exposures in the event of bankruptcy. These amounts are not included in the tables below.
Derivative AssetsJune 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$180 $37 $36 $33 $3 $1 $21 $— 
Offset
(20)(10)(10)(10)— — — — 
Net amounts presented in Current Assets: Other$160 $27 $26 $23 $3 $1 $21 $— 
Noncurrent
Gross amounts recognized$359 $73 $66 $58 $7 $— $— $— 
Offset
(23)(12)(12)(12)— — — — 
Net amounts presented in Other Noncurrent Assets: Other$336 $61 $54 $46 $7 $— $— $— 
Derivative LiabilitiesJune 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$112 $35 $21 $10 $11 $— $2 $24 
Offset
(20)(10)(10)(10)— — — — 
Cash collateral posted
(1)— — — — — (1)— 
Net amounts presented in Current Liabilities: Other$91 $25 $11 $— $11 $— $1 $24 
Noncurrent
Gross amounts recognized$144 $25 $20 $15 $5 $1 $5 $91 
Offset
(23)(12)(12)(12)— — — — 
Net amounts presented in Other Noncurrent Liabilities: Other$121 $13 $8 $3 $5 $1 $5 $91 
Derivative AssetsDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$267 $39 $72 $61 $11 $1 $44 $1 
Offset
(29)(15)(14)(14)— — — — 
Net amounts presented in Current Assets: Other$238 $24 $58 $47 $11 $1 $44 $1 
Noncurrent
Gross amounts recognized$167 $55 $55 $48 $7 $— $— $— 
Offset
(37)(19)(17)(17)— — — — 
Net amounts presented in Other Noncurrent Assets: Other$130 $36 $38 $31 $7 $— $— $— 
Derivative LiabilitiesDecember 31, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Current
Gross amounts recognized$145 $57 $34 $33 $1 $— $3 $16 
Offset
(29)(15)(14)(14)— — — — 
Cash collateral posted
(3)(2)— — — — (1)— 
Net amounts presented in Current Liabilities: Other$113 $40 $20 $19 $1 $— $2 $16 
Noncurrent
Gross amounts recognized$174 $31 $24 $24 $— $1 $— $78 
Offset
(37)(19)(17)(17)— — — — 
Cash collateral posted
(4)(4)— — — — — — 
Net amounts presented in Other Noncurrent Liabilities: Other$133 $8 $7 $7 $— $1 $— $78 
Derivative Contracts with Contingent Credit Features The following tables show information with respect to derivative contracts that are in a net liability position and contain objective credit risk-related payment provisions.
June 30, 2025
DukeDuke
DukeEnergyProgressEnergy
(in millions)EnergyCarolinasEnergyProgress
Aggregate fair value of derivatives in a net liability position$9 $9 $— $— 
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered$9 $9 $— $— 
December 31, 2024
DukeDuke
DukeEnergyProgressEnergy
(in millions)EnergyCarolinasEnergyProgress
Aggregate fair value of derivatives in a net liability position$101 $52 $49 $49 
Fair value of collateral already posted6 6 — — 
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered$95 $46 $49 $49 
v3.25.2
Investments in Debt and Equity Securities (Tables)
 6 Months Ended
Jun. 30, 2025
Debt Securities, Available-for-sale [Line Items]  
Debt Securities, Trading, and Equity Securities, FV-NI
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $145 $— $— $139 
Equity securities6,210 36 8,637 5,753 61 8,233 
Corporate debt securities14 24 822 6 33 673 
Municipal bonds1 20 355 2 14 342 
U.S. government bonds17 51 1,897 3 84 1,806 
Other debt securities2 6 253 1 8 239 
Total NDTF Investments$6,244 $137 $12,109 $5,765 $200 $11,432 
Other Investments
Cash and cash equivalents$— $— $138 $— $— $47 
Equity securities45 — 125 39 4 160 
Corporate debt securities— 3 77 — 5 79 
Municipal bonds— 2 67 — 1 83 
U.S. government bonds— 5 51 — 5 59 
Other debt securities— 3 43 — 4 45 
Total Other Investments$45 $13 $501 $39 $19 $473 
Total Investments$6,289 $150 $12,610 $5,804 $219 $11,905 
Debt Securities, Available-for-sale
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $145 $— $— $139 
Equity securities6,210 36 8,637 5,753 61 8,233 
Corporate debt securities14 24 822 6 33 673 
Municipal bonds1 20 355 2 14 342 
U.S. government bonds17 51 1,897 3 84 1,806 
Other debt securities2 6 253 1 8 239 
Total NDTF Investments$6,244 $137 $12,109 $5,765 $200 $11,432 
Other Investments
Cash and cash equivalents$— $— $138 $— $— $47 
Equity securities45 — 125 39 4 160 
Corporate debt securities— 3 77 — 5 79 
Municipal bonds— 2 67 — 1 83 
U.S. government bonds— 5 51 — 5 59 
Other debt securities— 3 43 — 4 45 
Total Other Investments$45 $13 $501 $39 $19 $473 
Total Investments$6,289 $150 $12,610 $5,804 $219 $11,905 
Schedule of Realized Gain (Loss)
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three and six months ended June 30, 2025, and 2024, were as follows.
Three Months EndedSix Months Ended
(in millions)June 30, 2025June 30, 2024June 30, 2025June 30, 2024
FV-NI:
 Realized gains $41 $127 $167 $195 
 Realized losses40 27 81 45 
AFS:
 Realized gains10 2 20 12 
 Realized losses17 22 37 36 
Investments Classified by Contractual Maturity Date
The table below summarizes the maturity date for debt securities.
June 30, 2025
DukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaIndiana
Due in one year or less$87 $5 $79 $17 $62 $1 
Due after one through five years896 397 438 375 63 8 
Due after five through 10 years695 360 285 268 17 6 
Due after 10 years1,887 1,074 712 664 48 11 
Total$3,565 $1,836 $1,514 $1,324 $190 $26 
Duke Energy Carolinas  
Debt Securities, Available-for-sale [Line Items]  
Debt Securities, Trading, and Equity Securities, FV-NI
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $60 $— $— $62 
Equity securities3,638 18 4,983 3,386 33 4,751 
Corporate debt securities6 21 501 2 27 401 
Municipal bonds— 6 38 — 4 36 
U.S. government bonds9 33 1,056 — 50 991 
Other debt securities2 6 241 1 8 223 
Total NDTF Investments$3,655 $84 $6,879 $3,389 $122 $6,464 
Debt Securities, Available-for-sale
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $60 $— $— $62 
Equity securities3,638 18 4,983 3,386 33 4,751 
Corporate debt securities6 21 501 2 27 401 
Municipal bonds— 6 38 — 4 36 
U.S. government bonds9 33 1,056 — 50 991 
Other debt securities2 6 241 1 8 223 
Total NDTF Investments$3,655 $84 $6,879 $3,389 $122 $6,464 
Schedule of Realized Gain (Loss)
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three and six months ended June 30, 2025, and 2024, were as follows.
Three Months EndedSix Months Ended
(in millions)June 30, 2025June 30, 2024June 30, 2025June 30, 2024
FV-NI:
 Realized gains$22 $72 $104 $125 
 Realized losses 19 15 41 21 
AFS:
 Realized gains8 1 15 5 
 Realized losses9 11 23 17 
Progress Energy  
Debt Securities, Available-for-sale [Line Items]  
Debt Securities, Trading, and Equity Securities, FV-NI
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $85 $— $— $77 
Equity securities2,572 18 3,654 2,367 28 3,482 
Corporate debt securities8 3 321 4 6 272 
Municipal bonds1 14 317 2 10 306 
U.S. government bonds8 18 841 3 34 815 
Other debt securities— — 12 — — 16 
Total NDTF Investments$2,589 $53 $5,230 $2,376 $78 $4,968 
Other Investments
Cash and cash equivalents$— $— $16 $— $— $23 
Municipal bonds— 1 23 — — 24 
Total Other Investments$— $1 $39 $— $— $47 
Total Investments$2,589 $54 $5,269 $2,376 $78 $5,015 
Debt Securities, Available-for-sale
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $85 $— $— $77 
Equity securities2,572 18 3,654 2,367 28 3,482 
Corporate debt securities8 3 321 4 6 272 
Municipal bonds1 14 317 2 10 306 
U.S. government bonds8 18 841 3 34 815 
Other debt securities— — 12 — — 16 
Total NDTF Investments$2,589 $53 $5,230 $2,376 $78 $4,968 
Other Investments
Cash and cash equivalents$— $— $16 $— $— $23 
Municipal bonds— 1 23 — — 24 
Total Other Investments$— $1 $39 $— $— $47 
Total Investments$2,589 $54 $5,269 $2,376 $78 $5,015 
Schedule of Realized Gain (Loss)
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three and six months ended June 30, 2025, and 2024, were as follows.
Three Months EndedSix Months Ended
(in millions)June 30, 2025June 30, 2024June 30, 2025June 30, 2024
FV-NI:
 Realized gains$19 $55 $63 $70 
 Realized losses21 12 40 24 
AFS:
 Realized gains2 1 5 7 
 Realized losses8 11 14 19 
Duke Energy Progress  
Debt Securities, Available-for-sale [Line Items]  
Debt Securities, Trading, and Equity Securities, FV-NI
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $67 $— $— $54 
Equity securities2,457 18 3,531 2,256 28 3,362 
Corporate debt securities7 3 302 4 6 256 
Municipal bonds1 14 317 2 10 306 
U.S. government bonds8 13 694 3 26 645 
Other debt securities— — 11 — — 14 
Total NDTF Investments$2,473 $48 $4,922 $2,265 $70 $4,637 
Other Investments
Cash and cash equivalents$— $— $11 $— $— $16 
Total Other Investments$— $— $11 $— $— $16 
Total Investments$2,473 $48 $4,933 $2,265 $70 $4,653 
Debt Securities, Available-for-sale
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $67 $— $— $54 
Equity securities2,457 18 3,531 2,256 28 3,362 
Corporate debt securities7 3 302 4 6 256 
Municipal bonds1 14 317 2 10 306 
U.S. government bonds8 13 694 3 26 645 
Other debt securities— — 11 — — 14 
Total NDTF Investments$2,473 $48 $4,922 $2,265 $70 $4,637 
Other Investments
Cash and cash equivalents$— $— $11 $— $— $16 
Total Other Investments$— $— $11 $— $— $16 
Total Investments$2,473 $48 $4,933 $2,265 $70 $4,653 
Schedule of Realized Gain (Loss)
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three and six months ended June 30, 2025, and 2024, were as follows.
Three Months EndedSix Months Ended
(in millions)June 30, 2025June 30, 2024June 30, 2025June 30, 2024
FV-NI:
 Realized gains$17 $55 $61 $70 
 Realized losses21 12 40 24 
AFS:
 Realized gains2 1 5 7 
 Realized losses7 10 13 18 
Duke Energy Florida  
Debt Securities, Available-for-sale [Line Items]  
Debt Securities, Trading, and Equity Securities, FV-NI
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $18 $— $— $23 
Equity securities115 — 123 111 — 120 
Corporate debt securities1 — 19 — — 16 
U.S. government bonds— 5 147 — 8 170 
Other debt securities— — 1 — — 2 
Total NDTF Investments(a)
$116 $5 $308 $111 $8 $331 
Other Investments
Cash and cash equivalents$— $— $2 $— $— $3 
Municipal bonds— 1 23 — — 24 
Total Other Investments$— $1 $25 $— $— $27 
Total Investments$116 $6 $333 $111 $8 $358 
(a)During the six months ended June 30, 2025, and the year ended December 31, 2024, Duke Energy Florida received reimbursements from the NDTF for costs related to ongoing decommissioning activity of Crystal River Unit 3.
Debt Securities, Available-for-sale
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $18 $— $— $23 
Equity securities115 — 123 111 — 120 
Corporate debt securities1 — 19 — — 16 
U.S. government bonds— 5 147 — 8 170 
Other debt securities— — 1 — — 2 
Total NDTF Investments(a)
$116 $5 $308 $111 $8 $331 
Other Investments
Cash and cash equivalents$— $— $2 $— $— $3 
Municipal bonds— 1 23 — — 24 
Total Other Investments$— $1 $25 $— $— $27 
Total Investments$116 $6 $333 $111 $8 $358 
(a)During the six months ended June 30, 2025, and the year ended December 31, 2024, Duke Energy Florida received reimbursements from the NDTF for costs related to ongoing decommissioning activity of Crystal River Unit 3.
Duke Energy Indiana  
Debt Securities, Available-for-sale [Line Items]  
Debt Securities, Trading, and Equity Securities, FV-NI
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are measured at FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedEstimated
HoldingHoldingFairHoldingFair
(in millions)GainsLossesValueLossesValue
Investments
Cash and cash equivalents$— $— $2 $— $1 
Equity securities1 — 47 4 89 
Corporate debt securities— — 1 — 6 
Municipal bonds— 1 25 1 43 
U.S. government bonds— — — — 7 
Total Investments$1 $1 $75 $5 $146 
Debt Securities, Available-for-sale
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are measured at FV-NI and debt investments are classified as AFS.
June 30, 2025December 31, 2024
GrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedEstimated
HoldingHoldingFairHoldingFair
(in millions)GainsLossesValueLossesValue
Investments
Cash and cash equivalents$— $— $2 $— $1 
Equity securities1 — 47 4 89 
Corporate debt securities— — 1 — 6 
Municipal bonds— 1 25 1 43 
U.S. government bonds— — — — 7 
Total Investments$1 $1 $75 $5 $146 
v3.25.2
Fair Value Measurements (Tables)
 6 Months Ended
Jun. 30, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair Value Measurement amounts for Assets and Liabilities
The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets. Derivative amounts in the tables below for all Duke Energy Registrants exclude cash collateral, which is disclosed in Note 9. See Note 10 for additional information related to investments by major security type for the Duke Energy Registrants.
June 30, 2025
(in millions)Total Fair ValueLevel 1Level 2Level 3Not Categorized
NDTF cash and cash equivalents$145 $145 $— $— $— 
NDTF equity securities8,637 8,609 3 — 25 
NDTF debt securities3,327 1,051 2,276 — — 
Other equity securities125 125 — — — 
Other debt securities238 51 187 — — 
Other cash and cash equivalents138 138 — — — 
Derivative assets539 8 517 14 — 
Total assets13,149 10,127 2,983 14 25 
Derivative liabilities(256)(2)(254)— — 
Net assets$12,893 $10,125 $2,729 $14 $25 
December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Level 3Not Categorized
NDTF cash and cash equivalents$139 $139 $— $— $— 
NDTF equity securities8,233 8,203 2 — 28 
NDTF debt securities3,060 1,022 2,038 — — 
Other equity securities160 160 — — — 
Other debt securities266 52 214 — — 
Other cash and cash equivalents47 47 — — — 
Derivative assets434 2 423 9 — 
Total assets12,339 9,625 2,677 9 28 
Derivative liabilities(319)(3)(316)— — 
Net assets$12,020 $9,622 $2,361 $9 $28 
Reconciliation of Assets and Liabilities Measured At Fair Value on a Recurring Basis Using Unobservable Inputs
The following table provides reconciliations of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.
Derivatives (net)
Three Months Ended June 30,Six Months Ended June 30,
(in millions) 2025202420252024
Balance at beginning of period$3 $6 $9 $15 
Purchases, sales, issuances and settlements:
Purchases14 29 14 29 
Settlements8 (10)2 (23)
Total (losses) gains included on the Condensed Consolidated Balance Sheet
(11)10 (11)14 
Balance at end of period$14 $35 $14 $35 
Quantitative Information Table - Level 3
The following tables include quantitative information about the Duke Energy Registrants' derivatives classified as Level 3.
June 30, 2025
Weighted
Fair ValueAverage
Investment Type(in millions)Valuation TechniqueUnobservable InputRangeRange
Duke Energy Ohio 
FTRs$1 RTO auction pricingFTR price – per MWh$— -$0.78 $0.20 
Duke Energy Indiana 
FTRs13 RTO auction pricingFTR price – per MWh(2.09)-17.87 0.95 
Duke Energy
Total Level 3 derivatives$14 
December 31, 2024
Weighted
Fair ValueAverage
Investment Type(in millions)Valuation TechniqueUnobservable InputRangeRange
Duke Energy Ohio   
FTRs$1 RTO auction pricingFTR price – per MWh$— –$1.13 $0.48 
Duke Energy Indiana   
FTRs8 RTO auction pricingFTR price – per MWh(0.63)–9.24 0.94 
Duke Energy
Total Level 3 derivatives$9 
Schedule of Long Term Debt Fair Value
The fair value and book value of long-term debt, including current maturities, is summarized in the following table. Estimates determined are not necessarily indicative of amounts that could have been settled in current markets. Fair value of long-term debt uses Level 2 measurements.
June 30, 2025December 31, 2024
(in millions)Book ValueFair ValueBook ValueFair Value
Duke Energy(a)
$83,960 $77,104 $80,689 $73,440 
Duke Energy Carolinas18,345 16,916 17,490 15,975 
Progress Energy26,880 24,999 24,496 22,548 
Duke Energy Progress14,215 12,757 12,504 11,009 
Duke Energy Florida11,020 10,449 10,348 9,752 
Duke Energy Ohio4,364 4,095 4,165 3,871 
Duke Energy Indiana5,095 4,655 4,798 4,329 
Piedmont4,004 3,670 4,003 3,584 
(a)Book value of long-term debt includes $1 billion at June 30, 2025, and December 31, 2024, of net unamortized debt discount and premium of purchase accounting adjustments related to the mergers with Progress Energy and Piedmont that are excluded from fair value of long-term debt.
Duke Energy Carolinas  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair Value Measurement amounts for Assets and Liabilities
The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.
June 30, 2025
(in millions)Total Fair ValueLevel 1Level 2Not Categorized
NDTF cash and cash equivalents$60 $60 $— $— 
NDTF equity securities4,983 4,955 3 25 
NDTF debt securities1,836 517 1,319 — 
Derivative assets110 — 110 — 
Total assets6,989 5,532 1,432 25 
Derivative liabilities(60)— (60)— 
Net assets$6,929 $5,532 $1,372 $25 
December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Not Categorized
NDTF cash and cash equivalents$62 $62 $— $— 
NDTF equity securities4,751 4,721 2 28 
NDTF debt securities1,651 520 1,131 — 
Derivative assets94 — 94 — 
Total assets6,558 5,303 1,227 28 
Derivative liabilities(88)— (88)— 
Net assets$6,470 $5,303 $1,139 $28 
Progress Energy  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair Value Measurement amounts for Assets and Liabilities
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.
June 30, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Total Fair ValueLevel 1Level 2
NDTF cash and cash equivalents$85 $85 $— $77 $77 $— 
NDTF equity securities3,654 3,654 — 3,482 3,482 — 
NDTF debt securities1,491 534 957 1,409 502 907 
Other debt securities23 — 23 24 — 24 
Other cash and cash equivalents16 16 — 23 23 — 
Derivative assets102 — 102 127 — 127 
Total assets5,371 4,289 1,082 5,142 4,084 1,058 
Derivative liabilities(41)— (41)(58)— (58)
Net assets$5,330 $4,289 $1,041 $5,084 $4,084 $1,000 
Duke Energy Progress  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair Value Measurement amounts for Assets and Liabilities
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.
June 30, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Total Fair ValueLevel 1Level 2
NDTF cash and cash equivalents$67 $67 $— $54 $54 $— 
NDTF equity securities3,531 3,531 — 3,362 3,362 — 
NDTF debt securities1,324 413 911 1,221 365 856 
Other cash and cash equivalents11 11 — 16 16 — 
Derivative assets91 — 91 109 — 109 
Total assets5,024 4,022 1,002 4,762 3,797 965 
Derivative liabilities(25)— (25)(57)— (57)
Net assets$4,999 $4,022 $977 $4,705 $3,797 $908 
Duke Energy Florida  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair Value Measurement amounts for Assets and Liabilities
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.
June 30, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Total Fair ValueLevel 1Level 2
NDTF cash and cash equivalents$18 $18 $— $23 $23 $— 
NDTF equity securities123 123 — 120 120 — 
NDTF debt securities167 121 46 188 137 51 
Other debt securities23 — 23 24 — 24 
Other cash and cash equivalents2 2 — 3 3 — 
Derivative assets10 — 10 18 — 18 
Total assets343 264 79 376 283 93 
Derivative liabilities(16)— (16)(1)— (1)
Net assets$327 $264 $63 $375 $283 $92 
Duke Energy Indiana  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair Value Measurement amounts for Assets and Liabilities
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.
June 30, 2025December 31, 2024
(in millions)Total Fair ValueLevel 1Level 2Level 3Total Fair ValueLevel 1Level 2Level 3
Other equity securities$47 $47 $— $— $89 $89 $— $— 
Other debt securities26 — 26 — 56 — 56 — 
Other cash and cash equivalents2 2 — — 1 1 — — 
Derivative assets21 8 — 13 44 — 36 8 
Total assets96 57 26 13 190 90 92 8 
Derivative liabilities(7)(2)(5)— (3)(3)— — 
Net assets$89 $55 $21 $13 $187 $87 $92 $8 
Reconciliation of Assets and Liabilities Measured At Fair Value on a Recurring Basis Using Unobservable Inputs
The following table provides a reconciliation of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.
Derivatives (net)
Three Months Ended June 30,Six Months Ended June 30,
(in millions)2025202420252024
Balance at beginning of period$2 $5 $8 $13 
Purchases, sales, issuances and settlements:
Purchases12 27 12 27 
Settlements9 (9)3 (20)
Total (losses) gains included on the Condensed Consolidated Balance Sheet
(10)10 (10)13 
Balance at end of period$13 $33 $13 $33 
Piedmont  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair Value Measurement amounts for Assets and Liabilities
The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Condensed Consolidated Balance Sheets.
June 30, 2025December 31, 2024
(in millions)Total Fair ValueLevel 2Total Fair ValueLevel 1Level 2
Derivative assets$— $— $1 $1 $— 
Derivative liabilities(115)(115)(94)— (94)
Net (liabilities) assets$(115)$(115)$(93)$1 $(94)
v3.25.2
Variable Interest Entities (Tables)
 6 Months Ended
Jun. 30, 2025
VIE primary beneficiary  
Variable Interest Entities [Line Items]  
Schedule of Variable Interest Entities
The following table summarizes the amounts and expiration dates of the credit facilities and associated restricted receivables described above.
Duke EnergyDuke Energy
CarolinasProgress
(in millions)DERFDEPR
Expiration date
(a)
(b)
Credit facility amount
(a)
(b)
Amounts borrowed at June 30, 2025— — 
Amounts borrowed at December 31, 2024500 400 
Restricted Receivables at June 30, 2025— — 
Restricted Receivables at December 31, 20241,054 835 
(a)    In January 2025, Duke Energy Carolinas repaid all outstanding DERF borrowings totaling $500 million and terminated the related DERF credit facility.
(b)    In March 2025, Duke Energy Progress repaid all outstanding DEPR borrowings totaling $400 million and terminated the related DEPR credit facility.
DEFPF | VIE primary beneficiary  
Variable Interest Entities [Line Items]  
Schedule of Variable Interest Entities
The following table summarizes the impact of DEFPF on Duke Energy Florida's Condensed Consolidated Balance Sheets.
(in millions)June 30, 2025December 31, 2024
Regulatory Assets: Current61 61 
Current Assets: Other28 35 
Other Noncurrent Assets: Regulatory assets715 741 
Other Noncurrent Assets: Other
7 — 
Current Liabilities: Other8 8 
Current maturities of long-term debt60 59 
Long-Term Debt741 773 
DECNCSF and DEPNCSF | VIE primary beneficiary  
Variable Interest Entities [Line Items]  
Schedule of Variable Interest Entities
The following table summarizes the impact of these VIEs on Duke Energy Carolinas’ and Duke Energy Progress’ Consolidated Balance Sheets.
June 30, 2025December 31, 2024
Duke EnergyDuke EnergyDuke EnergyDuke Energy
CarolinasProgressCarolinasProgress
(in millions)DECNCSFDEPNCSFDEPSCSFDECNCSFDEPNCSFDEPSCSF
Regulatory Assets: Current$12 $39 $8 $12 $39 $8 
Current Assets: Other9 29 8 9 27 13 
Other Noncurrent Assets: Regulatory assets184 600 152 189 620 155 
Other Noncurrent Assets: Other1 4 1 1 4 1 
Current Liabilities: Other2 8 3 2 10 7 
Current Maturities of Long-Term Debt
10 35 5 10 34 9 
Long-Term Debt193 629 160 198 646 163 
DEF ProCo | VIE primary beneficiary  
Variable Interest Entities [Line Items]  
Schedule of Variable Interest Entities
The following table summarizes the impact of this VIE on Duke Energy Florida's Consolidated Balance Sheets.
(in millions)June 30, 2025
December 31, 2024
Inventory
$548 $494 
Accounts Payable
241 208 
Cinergy Receivables | VIE not primary beneficiary  
Variable Interest Entities [Line Items]  
Schedule of Variable Interest Entities
The following table shows sales and cash flows related to receivables sold and reflects CRC activity prior to its termination in March 2024.
Duke Energy Ohio
Duke Energy Indiana
Six Months EndedSix Months Ended
(in millions)June 30, 2024June 30, 2024
Sales
Receivables sold$474 $473 
Loss recognized on sale7 6 
Cash flows
Cash proceeds from receivables sold$478 $523 
Return received on retained interests4 4 
v3.25.2
Revenue (Tables)
 6 Months Ended
Jun. 30, 2025
Revenue from Contract with Customer [Abstract]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction Supplemental requirements contracts that include contracted blocks of energy and capacity at contractually fixed prices have the following estimated remaining performance obligations:
Remaining Performance Obligations
(in millions)20252026202720282029ThereafterTotal
Duke Energy Carolinas$6 $12 $12 $12 $— $— $42 
Progress Energy17 43 13 13 13 42 141 
Duke Energy Progress3 6 6 6 6 20 47 
Duke Energy Florida14 37 7 7 7 22 94 
Duke Energy Indiana8 17 15 6 — — 46 
Estimated remaining performance obligations are as follows:
Remaining Performance Obligations
(in millions)20252026202720282029ThereafterTotal
Piedmont$32 $51 $49 $46 $44 $151 $373 
Disaggregation of Revenue
Disaggregated revenues are presented as follows:
Three Months Ended June 30, 2025
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
   Residential$3,242 $919 $1,753 $663 $1,089 $253 $316 $— 
Commercial
2,053 693 966 426 538 147 245 — 
   Industrial850 355 264 179 82 36 196 — 
   Wholesale523 132 328 294 33 19 44 — 
   Other revenues262 96 221 111 117 18 9 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$6,930 $2,195 $3,532 $1,673 $1,859 $473 $810 $— 
Gas Utilities and Infrastructure
   Residential$189 $— $— $— $— $100 $— $89 
   Commercial136 — — — — 37 — 99 
   Industrial41 — — — — 9 — 32 
   Power Generation— — — — — — — 23 
   Other revenues70 — — — — 8 — 47 
Total Gas Utilities and Infrastructure revenue from contracts with customers$436 $— $— $— $— $154 $— $290 
Other
Revenue from contracts with customers$7 $— $— $— $— $— $— $— 
Total revenue from contracts with customers$7,373 $2,195 $3,532 $1,673 $1,859 $627 $810 $290 
Other revenue sources(a)
$135 $36 $37 $8 $26 $27 $11 $45 
Total revenues$7,508 $2,231 $3,569 $1,681 $1,885 $654 $821 $335 
Three Months Ended June 30, 2024
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
   Residential$3,092 $959 $1,625 $661 $964 $240 $269 $— 
Commercial
2,013 755 933 427 506 144 180 — 
   Industrial869 374 267 183 84 39 190 — 
   Wholesale524 127 337 298 39 10 49 — 
   Other revenues293 99 187 91 96 18 39 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$6,791 $2,314 $3,349 $1,660 $1,689 $451 $727 $— 
Gas Utilities and Infrastructure
   Residential$182 $— $— $— $— $86 $— $96 
   Commercial103 — — — — 31 — 72 
   Industrial32 — — — — 6 — 24 
   Power Generation— — — — — — — 8 
   Other revenues32 — — — — 9 — 23 
Total Gas Utilities and Infrastructure revenue from contracts with customers$349 $— $— $— $— $132 $— $223 
Other
Revenue from contracts with customers$11 $— $— $— $— $— $— $— 
Total revenue from contracts with customers$7,151 $2,314 $3,349 $1,660 $1,689 $583 $727 $223 
Other revenue sources(a)
$21 $(17)$8 $(24)$27 $25 $20 $21 
Total revenues$7,172 $2,297 $3,357 $1,636 $1,716 $608 $747 $244 
Six Months Ended June 30, 2025
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
   Residential$6,645 $2,046 $3,366 $1,483 $1,883 $535 $695 $— 
Commercial
3,974 1,394 1,809 841 968 289 478 — 
   Industrial1,673 689 528 372 156 69 383 — 
   Wholesale1,193 281 770 698 72 41 101 — 
   Other revenues498 276 467 274 193 36 8 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$13,983 $4,686 $6,940 $3,668 $3,272 $970 $1,665 $— 
Gas Utilities and Infrastructure
   Residential$895 $— $— $— $— $286 $— $609 
   Commercial458 — — — — 107 — 351 
   Industrial96 — — — — 25 — 71 
   Power Generation— — — — — — — 47 
   Other revenues144 — — — — 14 — 100 
Total Gas Utilities and Infrastructure revenue from contracts with customers$1,593 $— $— $— $— $432 $— $1,178 
Other
Revenue from contracts with customers$15 $— $— $— $— $— $— $— 
Total Revenue from contracts with customers$15,591 $4,686 $6,940 $3,668 $3,272 $1,402 $1,665 $1,178 
Other revenue sources(a)
$166 $69 $96 $31 $57 $18 $14 $14 
Total operating revenues
$15,757 $4,755 $7,036 $3,699 $3,329 $1,420 $1,679 $1,192 
Six Months Ended June 30, 2024
DukeDukeDukeDukeDuke
(in millions)DukeEnergyProgressEnergyEnergyEnergyEnergy
By market or type of customerEnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Electric Utilities and Infrastructure
   Residential$6,207 $2,017 $3,142 $1,403 $1,739 $493 $556 $— 
Commercial
3,947 1,472 1,799 849 950 296 381 — 
   Industrial1,691 714 533 360 173 71 373 — 
   Wholesale1,078 265 692 624 68 24 97 — 
   Other revenues546 198 336 169 167 40 73 — 
Total Electric Utilities and Infrastructure revenue from contracts with customers$13,469 $4,666 $6,502 $3,405 $3,097 $924 $1,480 $— 
Gas Utilities and Infrastructure
   Residential$702 $— $— $— $— $233 $— $469 
   Commercial343 — — — — 88 — 255 
   Industrial79 — — — — 17 — 62 
   Power Generation— — — — — — — 16 
   Other revenues72 — — — — 14 — 58 
Total Gas Utilities and Infrastructure revenue from contracts with customers$1,196 $— $— $— $— $352 $— $860 
Other
Revenue from contracts with customers$18 $— $— $— $— $— $— $— 
Total Revenue from contracts with customers$14,683 $4,666 $6,502 $3,405 $3,097 $1,276 $1,480 $860 
Other revenue sources(a)
$160 $38 $83 $19 $55 $10 $26 $60 
Total operating revenues
$14,843 $4,704 $6,585 $3,424 $3,152 $1,286 $1,506 $920 
(a)Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions include regulatory mechanisms that periodically adjust for over or under collection of related revenues.
Reserve for Credit Losses for Trade and Other Receivables
The following table presents the reserve for credit losses for trade and other receivables.
Three Months Ended June 30, 2024 and 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Balance at March 31, 2024$204 $62 $73 $47 $27 $41 $16 $12 
Write-Offs(36)(16)(17)(12)(5)— — (3)
Credit Loss Expense35 10 11 6 5 1 — 2 
Other Adjustments4 9 6 6 (1)— — — 
Balance at June 30, 2024$207 $65 $73 $47 $26 $42 $16 $11 
Balance at March 31, 2025$204 $64 $67 $42 $25 $46 $17 $10 
Write-Offs(46)(12)(14)(10)(4)(8)(4)(8)
Credit Loss Expense32 5 10 3 7 — 6 11 
Other Adjustments9 — 7 7 — 3 (2)1 
Balance at June 30, 2025$199 $57 $70 $42 $28 $41 $17 $14 
Six Months Ended June 30, 2024 and 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Balance at December 31, 2023$205 $56 $74 $44 $31 $9 $5 $11 
Write-Offs(68)(28)(33)(19)(14)— — (4)
Credit Loss Expense45 17 20 10 10 2 2 4 
Other Adjustments25 20 12 12 (1)31 9 — 
Balance at June 30, 2024$207 $65 $73 $47 $26 $42 $16 $11 
Balance at December 31, 2024$209 $69 $73 $44 $29 $43 $15 $10 
Write-Offs(75)(26)(29)(18)(11)(8)(4)(8)
Credit Loss Expense46 10 18 8 10 1 6 11 
Other Adjustments19 4 8 8 — 5 — 1 
Balance at June 30, 2025$199 $57 $70 $42 $28 $41 $17 $14 
v3.25.2
Stockholders' Equity (Tables)
 6 Months Ended
Jun. 30, 2025
Equity [Abstract]  
Schedule of Earnings Per Share
The following table presents Duke Energy’s basic and diluted EPS calculations, the weighted average number of common shares outstanding and common and preferred share dividends declared.
Three Months Ended June 30,Six Months Ended June 30,
(in millions, except per share amounts)2025202420252024
Net Income available to Duke Energy common stockholders
$971 $886 $2,336 $1,985 
Less: Loss from discontinued operations attributable to Duke Energy common stockholders
(1)(10)(1)(13)
Accumulated preferred stock dividends adjustment— (12)— — 
Less: Impact of participating securities1 1 3 2 
Income from continuing operations available to Duke Energy common stockholders$971 $883 $2,334 $1,996 
Loss from discontinued operations, net of tax
$(1)$(10)$(1)$(13)
Add: Loss attributable to NCI
— — — — 
Loss from discontinued operations attributable to Duke Energy common stockholders
$(1)$(10)$(1)$(13)
Weighted average common shares outstanding – basic and diluted
777 772 777 771 
EPS from continuing operations available to Duke Energy common stockholders
Basic and diluted(a)
$1.25 $1.14 $3.00 $2.59 
Loss Per Share from discontinued operations attributable to Duke Energy common stockholders
   Basic and diluted(a)
$— $(0.01)$— $(0.02)
Potentially dilutive items excluded from the calculation(b)
2 2 2 2 
Dividends declared per common share$1.045 $1.025 $2.090 $2.050 
Dividends declared on Series A preferred stock per depositary share(c)
$0.359 $0.359 $0.719 $0.719 
Dividends declared on Series B preferred stock per share(d)
$— $— $— $24.375 
(a)The convertible notes were excluded from the calculations of diluted EPS because the effect was antidilutive.
(b)Performance stock awards were not included in the dilutive securities calculation because the performance measures related to the awards had not been met.
(c)5.75% Series A Cumulative Redeemable Perpetual Preferred Stock dividends are payable quarterly in arrears on the 16th day of March, June, September and December. The preferred stock has a $25 liquidation preference per depositary share.
(d)4.875% Series B Fixed-Rate Reset Cumulative Redeemable Perpetual Preferred Stock dividends were payable semiannually in arrears on the 16th day of March and September. The preferred stock was redeemed on September 16, 2024.
Equity Issuances Pursuant to Forward Contracts
The following table shows ATM equity issuances pursuant to forward contracts executed during February and March 2025.
Tranche
Shares Priced
Initial Forward Price
1
1,710,979$116.02 
2
1,262,618$117.94 
3
1,264,410$117.79 
Total
4,238,007
v3.25.2
Employee Benefit Plans (Tables)
 6 Months Ended
Jun. 30, 2025
Qualified Pension Plans  
Defined Benefit Plan Disclosure [Line Items]  
Components of Net Periodic Pension Costs
The following tables include the components of net periodic pension costs for qualified pension plans.
Three Months Ended June 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$27 $9 $8 $4 $3 $1 $2 $1 
Interest cost on projected benefit obligation82 20 26 12 15 4 6 2 
Expected return on plan assets(149)(38)(55)(25)(30)(6)(10)(5)
Amortization of actuarial loss15 3 4 2 2 — 1 1 
Amortization of prior service credit(3)— — — — — (1)(1)
Amortization of settlement charges7 3 2 2 — — 1 1 
Net periodic pension costs$(21)$(3)$(15)$(5)$(10)$(1)$(1)$(1)
Three Months Ended June 30, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$29 $10 $8 $5 $4 $— $1 $1 
Interest cost on projected benefit obligation83 20 26 12 14 4 7 3 
Expected return on plan assets(154)(40)(54)(25)(29)(7)(11)(5)
Amortization of actuarial loss8 2 3 2 1 1 1 — 
Amortization of prior service credit(4)— — — — — (1)(2)
Amortization of settlement charges4 2 1 1 1 — 1 1 
Net periodic pension costs$(34)$(6)$(16)$(5)$(9)$(2)$(2)$(2)
Six Months Ended June 30, 2025
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$54 $18 $15 $9 $6 $1 $3 $2 
Interest cost on projected benefit obligation164 39 52 23 29 8 13 5 
Expected return on plan assets(298)(76)(110)(49)(60)(11)(20)(10)
Amortization of actuarial loss30 7 9 4 4 1 2 2 
Amortization of prior service credit(6)— — — — — (1)(3)
Amortization of settlement charges13 6 4 3 1 — 1 2 
Net periodic pension costs$(43)$(6)$(30)$(10)$(20)$(1)$(2)$(2)
Six Months Ended June 30, 2024
DukeDukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaOhioIndianaPiedmont
Service cost$57 $19 $16 $10 $7 $1 $3 $2 
Interest cost on projected benefit obligation165 40 52 24 28 8 13 5 
Expected return on plan assets(308)(81)(108)(50)(58)(13)(21)(10)
Amortization of actuarial loss16 4 5 3 2 1 2 1 
Amortization of prior service credit(7)— — — — — (1)(4)
Amortization of settlement charges9 4 2 2 1 — 1 2 
Net periodic pension costs$(68)$(14)$(33)$(11)$(20)$(3)$(3)$(4)
v3.25.2
Income Taxes (Tables)
 6 Months Ended
Jun. 30, 2025
Income Tax Disclosure [Abstract]  
Summary of Effective Tax Rates
The ETRs from continuing operations for each of the Duke Energy Registrants are included in the following table.
Three Months EndedSix Months Ended
June 30,June 30,
2025202420252024
Duke Energy10.6 %13.1 %11.5 %13.2 %
Duke Energy Carolinas7.8 %10.9 %8.5 %11.2 %
Progress Energy15.1 %16.6 %15.9 %16.6 %
Duke Energy Progress12.4 %14.9 %13.6 %14.9 %
Duke Energy Florida19.1 %19.5 %19.4 %19.5 %
Duke Energy Ohio15.8 %17.2 %17.2 %17.0 %
Duke Energy Indiana13.3 %16.7 %12.9 %16.9 %
Piedmont44.4 %20.0 %19.5 %19.6 %
v3.25.2
Organization and Basis of Presentation (Schedule of Cash and Cash Equivalents) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Jun. 30, 2024
Dec. 31, 2023
Current Assets        
Cash and cash equivalents $ 344 $ 314    
Other Noncurrent Assets        
Total cash, cash equivalents and restricted cash 442 421 $ 483 $ 357
Duke Energy (Parent)        
Current Assets        
Cash and cash equivalents 344 314    
Other 75 84    
Other Noncurrent Assets        
Other 23 20    
Total cash, cash equivalents and restricted cash 442 418    
Duke Energy Carolinas        
Current Assets        
Cash and cash equivalents 7 6    
Other 9 9    
Other Noncurrent Assets        
Other 1 1    
Total cash, cash equivalents and restricted cash 17 16 20 19
Progress Energy        
Current Assets        
Cash and cash equivalents 58 73    
Other 66 76    
Other Noncurrent Assets        
Other 11 11    
Total cash, cash equivalents and restricted cash 135 160 160 135
Duke Energy Progress        
Current Assets        
Cash and cash equivalents 24 24    
Other 37 40    
Other Noncurrent Assets        
Other 5 5    
Total cash, cash equivalents and restricted cash 66 69 70 51
Duke Energy Florida        
Current Assets        
Cash and cash equivalents 16 33    
Other 28 35    
Other Noncurrent Assets        
Other 7 7    
Total cash, cash equivalents and restricted cash $ 51 $ 75 $ 73 $ 67
v3.25.2
Organization and Basis of Presentation (Schedule of Inventory) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Public Utilities, Inventory [Line Items]    
Total inventory $ 4,434 $ 4,509
Duke Energy (Parent)    
Public Utilities, Inventory [Line Items]    
Materials and supplies 3,403 3,387
Coal 738 801
Natural gas, oil and other fuel 293 321
Total inventory 4,434 4,509
Duke Energy Carolinas    
Public Utilities, Inventory [Line Items]    
Materials and supplies 1,139 1,150
Coal 339 341
Natural gas, oil and other fuel 46 45
Total inventory 1,524 1,536
Progress Energy    
Public Utilities, Inventory [Line Items]    
Materials and supplies 1,660 1,649
Coal 235 241
Natural gas, oil and other fuel 195 196
Total inventory 2,090 2,086
Duke Energy Progress    
Public Utilities, Inventory [Line Items]    
Materials and supplies 1,059 1,074
Coal 158 164
Natural gas, oil and other fuel 106 103
Total inventory 1,323 1,341
Duke Energy Florida    
Public Utilities, Inventory [Line Items]    
Materials and supplies 601 576
Coal 76 77
Natural gas, oil and other fuel 90 92
Total inventory 767 745
Duke Energy Ohio    
Public Utilities, Inventory [Line Items]    
Materials and supplies 148 149
Coal 22 23
Natural gas, oil and other fuel 11 11
Total inventory 181 183
Duke Energy Indiana    
Public Utilities, Inventory [Line Items]    
Materials and supplies 406 389
Coal 142 196
Natural gas, oil and other fuel 2 1
Total inventory 550 586
Piedmont    
Public Utilities, Inventory [Line Items]    
Materials and supplies 13 11
Coal 0 0
Natural gas, oil and other fuel 38 67
Total inventory $ 51 $ 78
v3.25.2
Organization and Basis of Presentation (Other Noncurrent Assets) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Regulatory Asset [Line Items]    
Other $ 3,792 $ 3,509
Offshore Wind Arrangement    
Regulatory Asset [Line Items]    
Other $ 150 $ 150
v3.25.2
Organization and Basis of Presentation (Accounts Payable Finance Program) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Duke Energy (Parent)        
Supplier Finance Program, Obligation [Roll Forward]        
Confirmed obligations at beginning of period $ 18 $ 76 $ 13 $ 50
Invoices confirmed during the period 14 63 32 120
Confirmed invoices paid during the period (20) (111) (33) (142)
Confirmed obligations at end of period 12 28 12 28
Piedmont        
Supplier Finance Program, Obligation [Roll Forward]        
Confirmed obligations at beginning of period 18 74 12 47
Invoices confirmed during the period 12 63 30 119
Confirmed invoices paid during the period (18) (109) (30) (138)
Confirmed obligations at end of period $ 12 $ 28 $ 12 $ 28
v3.25.2
Dispositions (Narrative) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 35 Months Ended
Aug. 04, 2025
Jul. 27, 2025
Jun. 30, 2024
Jun. 30, 2028
Dec. 31, 2027
Jun. 30, 2027
Dec. 31, 2026
Jun. 30, 2026
Jun. 30, 2024
Jun. 30, 2028
Dec. 31, 2024
Oct. 25, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Aggregate investment from noncontrolling owner     $ 47           $ 47      
Subsequent event | Florida Progress LLC | Forecast                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Noncontrolling ownership percentage       19.70%       9.20%   19.70%    
Aggregate investment from noncontrolling owner       $ 1,000 $ 1,500 $ 500 $ 200 $ 2,800   $ 6,000    
Investment Agreement, termination fee $ 240                      
Discontinued Operations, Disposed of by Sale | Piedmont's Tennessee Business | Subsequent event                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Consideration to be received   $ 2,480                    
Purchase Agreement termination fee, percentage   6.50%                    
Discontinued Operations, Disposed of by Sale | Commercial Renewables                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Consideration to be received                       $ 1,100
Consideration period                       18 months
Discontinued Operations, Disposed of by Sale | Commercial Renewables | Noncurrent assets                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Consideration to be received                     $ 551  
Discontinued Operations, Held-for-sale | Commercial Renewables                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Noncontrolling interest balance                     $ 18  
v3.25.2
Dispositions (Balance Sheet) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Current Assets Held for Sale    
Total current assets held for sale $ 0 $ 4
Noncurrent Assets Held for Sale    
Total other noncurrent assets held for sale 0 89
Current Liabilities Associated with Assets Held for Sale    
Total current liabilities associated with assets held for sale 18 80
Noncurrent Liabilities Associated with Assets Held for Sale    
Total other noncurrent liabilities associated with assets held for sale 0 89
Discontinued Operations, Held-for-sale | Commercial Renewables    
Current Assets Held for Sale    
Other 0 4
Total current assets held for sale 0 4
Noncurrent Assets Held for Sale    
Cost 0 109
Accumulated depreciation and amortization 0 (24)
Net property, plant and equipment 0 85
Operating lease right-of-use assets, net 0 4
Total other noncurrent assets held for sale 0 4
Total Assets Held for Sale 0 93
Current Liabilities Associated with Assets Held for Sale    
Accounts payable 18 19
Taxes accrued 0 1
Current maturities of long-term debt 0 43
Unrealized losses on commodity hedges 0 13
Other 0 4
Total current liabilities associated with assets held for sale 18 80
Noncurrent Liabilities Associated with Assets Held for Sale    
Operating lease liabilities 0 5
Asset retirement obligations 0 5
Unrealized losses on commodity hedges 0 66
Other 0 13
Total other noncurrent liabilities associated with assets held for sale 0 89
Total Liabilities Associated with Assets Held for Sale $ 18 $ 169
v3.25.2
Dispositions (Income Statement) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Net loss from discontinued operations attributable to Duke Energy Corporation $ (1) $ (10) $ (1) $ (13)
Discontinued Operations, Held-for-sale | Commercial Renewables        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Operating revenues 0 13 4 7
Operation, maintenance and other 0 12 1 16
Property and other taxes 0 1 0 1
Interest expense 0 0 0 2
Loss on disposal 0 15 4 5
Loss before income taxes 0 (15) (1) (17)
Income tax expense (benefit) 1 (5) 0 (4)
Net loss from discontinued operations attributable to Duke Energy Corporation $ (1) $ (10) $ (1) $ (13)
v3.25.2
Dispositions (Cash Flow Statement) (Details) - Commercial Renewables - Discontinued Operations, Held-for-sale - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Operating activities $ (3) $ 7
Investing activities $ 0 $ (13)
v3.25.2
Business Segments (Narrative) (Details)
 6 Months Ended
Jun. 30, 2025
segment
Segment Reporting Information [Line Items]  
Number of reportable segments 2
Duke Energy Carolinas  
Segment Reporting Information [Line Items]  
Number of reportable segments 1
Progress Energy  
Segment Reporting Information [Line Items]  
Number of reportable segments 1
Duke Energy Progress  
Segment Reporting Information [Line Items]  
Number of reportable segments 1
Duke Energy Florida  
Segment Reporting Information [Line Items]  
Number of reportable segments 1
Duke Energy Ohio  
Segment Reporting Information [Line Items]  
Number of reportable segments 2
Duke Energy Indiana  
Segment Reporting Information [Line Items]  
Number of reportable segments 1
Piedmont  
Segment Reporting Information [Line Items]  
Number of reportable segments 1
v3.25.2
Business Segments (Business Segment Data) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues $ 7,508 $ 7,172 $ 15,757 $ 14,843  
Less:          
Operation, maintenance and other 1,655 1,320 3,154 2,699  
Depreciation and amortization 1,583 1,409 3,095 2,796  
Property and other taxes 415 393 843 779  
Impairment of assets and other charges 3 43 3 44  
Interest expense 897 824 1,786 1,641  
Income tax expense (benefit) 119 140 312 318  
Noncontrolling interests 23 21 48 34  
Preferred dividends 13 14 27 53  
Equity in earnings of unconsolidated affiliates 11 21 22 38  
Add: Other 197 173 335 354  
Segment income (loss) 972 896 2,337 1,998  
Loss From Discontinued Operations, net of tax (1) (10) (1) (13)  
Net Income Available to Duke Energy Corporation Common Stockholders 971 886 2,336 1,985  
Income (loss) attributable to noncontrolling interest 23 21 48 34  
Net income 1,007 921 2,411 2,072  
Capital investments expenditures and acquisitions     6,428 6,212  
Total Assets 189,713 181,575 189,713 181,575 $ 186,343
Fuel used in electric generation and purchased power          
Less:          
Cost of sales 1,878 2,228 3,977 4,563  
Cost of natural gas          
Less:          
Cost of sales 158 78 532 310  
Duke Energy Carolinas          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 2,231 2,297 4,755 4,704  
Less:          
Cost of sales 571 749 1,374 1,609  
Operation, maintenance and other 500 444 984 895  
Depreciation and amortization 482 437 914 834  
Property and other taxes 85 89 187 183  
Impairment of assets and other charges (1) 33 (1) 34  
Interest expense 200 168 400 348  
Income tax expense (benefit) 36 48 87 104  
Add: Other 67 62 128 124  
Segment income (loss) 425 391 938 821  
Net income     938 821  
Capital investments expenditures and acquisitions     2,145 1,949  
Total Assets 56,599 53,374 56,599 53,374 55,005
Duke Energy Carolinas | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 571 749 1,374 1,609  
Progress Energy          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 3,569 3,357 7,036 6,585  
Less:          
Cost of sales 1,025 1,202 2,131 2,345  
Operation, maintenance and other 843 588 1,531 1,216  
Depreciation and amortization 609 568 1,240 1,155  
Property and other taxes 175 166 347 324  
Impairment of assets and other charges 0 9 0 9  
Interest expense 283 265 558 525  
Income tax expense (benefit) 108 104 218 190  
Add: Other 81 66 142 135  
Segment income (loss) 607 521 1,153 956  
Net income 607 521 1,153 956  
Capital investments expenditures and acquisitions     2,742 2,623  
Total Assets 74,311 69,464 74,311 69,464 71,636
Progress Energy | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 1,025 1,202 2,131 2,345  
Duke Energy Progress          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 1,681 1,636 3,699 3,424  
Less:          
Cost of sales 574 597 1,299 1,217  
Operation, maintenance and other 340 326 738 701  
Depreciation and amortization 319 306 676 645  
Property and other taxes 45 50 105 101  
Impairment of assets and other charges 0 9 0 9  
Interest expense 139 123 267 243  
Income tax expense (benefit) 39 39 95 87  
Add: Other 50 37 87 74  
Segment income (loss) 275 223 606 495  
Net income     606 495  
Capital investments expenditures and acquisitions     1,524 1,373  
Total Assets 41,558 38,661 41,558 38,661 39,493
Duke Energy Progress | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 574 597 1,299 1,217  
Duke Energy Florida          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 1,885 1,716 3,329 3,152  
Less:          
Cost of sales 451 605 832 1,128  
Operation, maintenance and other 500 256 786 507  
Depreciation and amortization 290 262 564 510  
Property and other taxes 130 117 242 223  
Interest expense 116 114 234 225  
Income tax expense (benefit) 81 75 139 118  
Add: Other 27 22 46 47  
Segment income (loss) 344 309 578 488  
Net income     578 488  
Capital investments expenditures and acquisitions     1,218 1,251  
Total Assets 29,092 27,078 29,092 27,078 28,569
Duke Energy Florida | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 451 605 832 1,128  
Duke Energy Ohio          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 654 608 1,420 1,286  
Less:          
Operation, maintenance and other 115 121 239 247  
Depreciation and amortization 121 96 233 195  
Property and other taxes 101 102 217 204  
Interest expense 51 47 98 92  
Income tax expense (benefit) 12 16 34 35  
Add: Other 6 4 11 10  
Segment income (loss) 64 77 164 171  
Net income     164 171  
Capital investments expenditures and acquisitions     471 417  
Total Assets 12,996 12,601 12,996 12,601 12,768
Duke Energy Ohio | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 161 132 310 270  
Duke Energy Ohio | Cost of natural gas          
Less:          
Cost of sales 35 21 136 82  
Duke Energy Indiana          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 821 747 1,679 1,506  
Less:          
Cost of sales 219 223 479 494  
Operation, maintenance and other 192 161 387 341  
Depreciation and amortization 222 172 414 341  
Property and other taxes 17 16 35 30  
Interest expense 57 58 116 115  
Income tax expense (benefit) 18 22 36 36  
Add: Other 21 15 31 28  
Segment income (loss) 117 110 243 177  
Net income     243 177  
Capital investments expenditures and acquisitions     526 489  
Total Assets 16,180 15,649 16,180 15,649 15,727
Duke Energy Indiana | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 219 223 479 494  
Piedmont          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 335 244 1,192 920  
Less:          
Cost of sales 124 58 396 228  
Operation, maintenance and other 103 85 199 180  
Depreciation and amortization 71 64 141 126  
Property and other taxes 19 16 37 31  
Interest expense 48 43 95 88  
Income tax expense (benefit) (8) (1) 68 59  
Equity in earnings of unconsolidated affiliates 1 2 3 4  
Add: Other 11 15 22 30  
Segment income (loss) (10) (4) 281 242  
Net income (10) (4) 281 242  
Capital investments expenditures and acquisitions     380 571  
Total Assets 11,931 11,301 11,931 11,301 $ 11,799
Piedmont | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 124 58 396 228  
Other          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 7 11 15 18  
Less:          
Operation, maintenance and other (23) (8) (21) (26)  
Depreciation and amortization 77 73 154 144  
Property and other taxes 3 4 6 7  
Impairment of assets and other charges 5 1 5 1  
Interest expense 318 306 636 600  
Income tax expense (benefit) (77) (77) (164) (141)  
Noncontrolling interests 0 0 0 0  
Preferred dividends 13 14 27 53  
Equity in earnings of unconsolidated affiliates 9 19 15 36  
Add: Other 39 54 58 121  
Segment income (loss) (228) (200) (488) (403)  
Capital investments expenditures and acquisitions     156 140  
Total Assets 3,988 4,205 3,988 4,205  
Other | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 0 0 0 0  
Other | Cost of natural gas          
Less:          
Cost of sales 0 0 0 0  
Eliminations, Corporate and Reconciling Items          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 40 40 82 78  
Eliminations, Corporate and Reconciling Items | Duke Energy Carolinas          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 0 0 0 0  
Less:          
Operation, maintenance and other 12 10 22 21  
Depreciation and amortization 0 0 0 0  
Property and other taxes 0 0 0 0  
Impairment of assets and other charges 0 0 0 0  
Interest expense 0 0 0 0  
Income tax expense (benefit) (3) (3) (5) (5)  
Add: Other (1) (1) (1) (1)  
Segment income (loss) (10) (8) (18) (17)  
Capital investments expenditures and acquisitions     0 0  
Total Assets 264 214 264 214  
Eliminations, Corporate and Reconciling Items | Duke Energy Carolinas | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 0 0 0 0  
Eliminations, Corporate and Reconciling Items | Progress Energy          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 3 5 8 9  
Less:          
Operation, maintenance and other 15 17 30 29  
Depreciation and amortization 0 0 0 0  
Property and other taxes 0 (1) 0 0  
Impairment of assets and other charges   0   0  
Interest expense 28 28 57 57  
Income tax expense (benefit) (13) (10) (21) (19)  
Add: Other 5 10 5 18  
Segment income (loss) (22) (19) (53) (40)  
Capital investments expenditures and acquisitions     0 0  
Total Assets 4,822 3,844 4,822 3,844  
Eliminations, Corporate and Reconciling Items | Progress Energy | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 0 0 0 0  
Eliminations, Corporate and Reconciling Items | Duke Energy Progress          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 0 0 0 0  
Less:          
Operation, maintenance and other 7 6 14 12  
Depreciation and amortization 0 0 0 0  
Property and other taxes 0 0 0 0  
Impairment of assets and other charges   0   0  
Interest expense 0 0 0 0  
Income tax expense (benefit) (1) 0 (3) (2)  
Add: Other 0 1 (2) 2  
Segment income (loss) (6) (5) (13) (8)  
Capital investments expenditures and acquisitions     0 0  
Total Assets 1,072 99 1,072 99  
Eliminations, Corporate and Reconciling Items | Duke Energy Progress | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 0 0 0 0  
Eliminations, Corporate and Reconciling Items | Duke Energy Florida          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 0 0 0 0  
Less:          
Operation, maintenance and other 5 5 9 9  
Depreciation and amortization 0 0 0 0  
Property and other taxes 0 0 0 0  
Interest expense 0 0 0 0  
Income tax expense (benefit) 0 0 (2) (2)  
Add: Other 1 2 (2) 2  
Segment income (loss) (4) (3) (9) (5)  
Capital investments expenditures and acquisitions     0 0  
Total Assets 89 20 89 20  
Eliminations, Corporate and Reconciling Items | Duke Energy Florida | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 0 0 0 0  
Eliminations, Corporate and Reconciling Items | Duke Energy Ohio          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 0 0 0 0  
Less:          
Operation, maintenance and other 1 3 4 4  
Depreciation and amortization (1) 0 (1) 0  
Property and other taxes 0 0 0 0  
Interest expense 1 (2) 1 (1)  
Income tax expense (benefit) 0 (1) (1) (1)  
Add: Other 0 (1) (1) (1)  
Segment income (loss) (1) (1) (4) (3)  
Capital investments expenditures and acquisitions     0 0  
Total Assets 36 178 36 178  
Eliminations, Corporate and Reconciling Items | Duke Energy Ohio | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 0 0 0 0  
Eliminations, Corporate and Reconciling Items | Duke Energy Ohio | Cost of natural gas          
Less:          
Cost of sales 0 0 0 0  
Eliminations, Corporate and Reconciling Items | Duke Energy Indiana          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 0 0 0 0  
Less:          
Operation, maintenance and other 3 0 5 2  
Depreciation and amortization 0 0 0 0  
Property and other taxes 0 0 0 0  
Interest expense 1 0 0 0  
Income tax expense (benefit) (2) 0 (2) 0  
Add: Other (1) (1) (1) (1)  
Segment income (loss) (3) (1) (4) (3)  
Capital investments expenditures and acquisitions     0 0  
Total Assets 240 59 240 59  
Eliminations, Corporate and Reconciling Items | Duke Energy Indiana | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 0 0 0 0  
Eliminations, Corporate and Reconciling Items | Piedmont          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 0 0 0 0  
Less:          
Operation, maintenance and other 2 2 4 2  
Depreciation and amortization 0 0 0 0  
Property and other taxes 0 0 0 0  
Interest expense 1 0 1 0  
Income tax expense (benefit) (1) 0 (1) 1  
Equity in earnings of unconsolidated affiliates 1 2 3 4  
Add: Other 0 0 0 0  
Segment income (loss) (1) 0 (1) 1  
Capital investments expenditures and acquisitions     0 0  
Total Assets 87 93 87 93  
Eliminations, Corporate and Reconciling Items | Piedmont | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 0 0 0 0  
Eliminations and Reconciling Items          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues (33) (29) (67) (60)  
Eliminations          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues (70) (69) (143) (141)  
Less:          
Operation, maintenance and other (45) (51) (97) (99)  
Depreciation and amortization (8) (6) (14) (13)  
Property and other taxes 0 0 0 0  
Impairment of assets and other charges (1) 0 (1) 0  
Interest expense (21) (31) (45) (68)  
Income tax expense (benefit) 0 1 0 1  
Noncontrolling interests 0 (1) 0 (1)  
Preferred dividends 0 0 0 0  
Equity in earnings of unconsolidated affiliates 1 1 1 0  
Add: Other (26) (39) (55) (78)  
Segment income (loss) 0 0 0 0  
Capital investments expenditures and acquisitions     0 0  
Total Assets 0 0 0 0  
Eliminations | Fuel used in electric generation and purchased power          
Less:          
Cost of sales (20) (19) (40) (39)  
Eliminations | Cost of natural gas          
Less:          
Cost of sales 0 0 0 0  
Total Reportable Segments          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 7,501 7,161 15,742 14,825  
Total Reportable Segments | Operating Segments          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 7,538 7,201 15,818 14,906  
Less:          
Operation, maintenance and other 1,723 1,379 3,272 2,824  
Depreciation and amortization 1,514 1,342 2,955 2,665  
Property and other taxes 412 389 837 772  
Impairment of assets and other charges (1) 42 (1) 43  
Interest expense 600 549 1,195 1,109  
Income tax expense (benefit) 196 216 476 458  
Noncontrolling interests 23 22 48 35  
Preferred dividends 0 0 0 0  
Equity in earnings of unconsolidated affiliates 1 1 6 2  
Add: Other 184 158 332 311  
Segment income (loss) 1,200 1,096 2,825 2,401  
Capital investments expenditures and acquisitions     6,272 6,072  
Total Assets 185,725 177,370 185,725 177,370  
Total Reportable Segments | Operating Segments | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 1,898 2,247 4,017 4,602  
Total Reportable Segments | Operating Segments | Cost of natural gas          
Less:          
Cost of sales 158 78 532 310  
Total Reportable Segments | Operating Segments | Duke Energy Ohio          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 654 608 1,420 1,286  
Less:          
Operation, maintenance and other 114 118 235 243  
Depreciation and amortization 122 96 234 195  
Property and other taxes 101 102 217 204  
Interest expense 50 49 97 93  
Income tax expense (benefit) 12 17 35 36  
Add: Other 6 5 12 11  
Segment income (loss) 65 78 168 174  
Capital investments expenditures and acquisitions     471 417  
Total Assets 12,960 12,423 12,960 12,423  
Total Reportable Segments | Operating Segments | Duke Energy Ohio | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 161 132 310 270  
Total Reportable Segments | Operating Segments | Duke Energy Ohio | Cost of natural gas          
Less:          
Cost of sales 35 21 136 82  
Total Reportable Segments | Eliminations          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues (37) (40) (76) (81)  
Electric Utilities and Infrastructure          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 7,030 6,802 14,155 13,587  
Electric Utilities and Infrastructure | Operating Segments          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 7,045 6,820 14,185 13,623  
Less:          
Operation, maintenance and other 1,594 1,262 3,018 2,578  
Depreciation and amortization 1,402 1,246 2,736 2,471  
Property and other taxes 371 351 749 688  
Impairment of assets and other charges (1) 42 (1) 43  
Interest expense 535 488 1,065 987  
Income tax expense (benefit) 200 214 389 387  
Noncontrolling interests 23 22 48 35  
Preferred dividends 0 0 0 0  
Equity in earnings of unconsolidated affiliates 0 1 0 2  
Add: Other 171 141 306 277  
Segment income (loss) 1,194 1,090 2,470 2,111  
Capital investments expenditures and acquisitions     5,724 5,349  
Total Assets 167,420 159,770 167,420 159,770  
Electric Utilities and Infrastructure | Operating Segments | South Carolina rate case order          
Less:          
Operation, maintenance and other   2   2  
Impairment of assets and other charges   42   42  
Interest expense   (11)   (11)  
Electric Utilities and Infrastructure | Operating Segments | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 1,898 2,247 4,017 4,602  
Electric Utilities and Infrastructure | Operating Segments | Cost of natural gas          
Less:          
Cost of sales 0 0 0 0  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 2,231 2,297 4,755 4,704  
Less:          
Operation, maintenance and other 488 434 962 874  
Depreciation and amortization 482 437 914 834  
Property and other taxes 85 89 187 183  
Impairment of assets and other charges (1) 33 (1) 34  
Interest expense 200 168 400 348  
Income tax expense (benefit) 39 51 92 109  
Add: Other 68 63 129 125  
Segment income (loss) 435 399 956 838  
Capital investments expenditures and acquisitions     2,145 1,949  
Total Assets 56,335 53,160 56,335 53,160  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 571 749 1,374 1,609  
Electric Utilities and Infrastructure | Operating Segments | Progress Energy          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 3,566 3,352 7,028 6,576  
Less:          
Operation, maintenance and other 828 571 1,501 1,187  
Depreciation and amortization 609 568 1,240 1,155  
Property and other taxes 175 167 347 324  
Impairment of assets and other charges   9   9  
Interest expense 255 237 501 468  
Income tax expense (benefit) 121 114 239 209  
Add: Other 76 56 137 117  
Segment income (loss) 629 540 1,206 996  
Capital investments expenditures and acquisitions     2,742 2,623  
Total Assets 69,489 65,620 69,489 65,620  
Electric Utilities and Infrastructure | Operating Segments | Progress Energy | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 1,025 1,202 2,131 2,345  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 1,681 1,636 3,699 3,424  
Less:          
Operation, maintenance and other 333 320 724 689  
Depreciation and amortization 319 306 676 645  
Property and other taxes 45 50 105 101  
Impairment of assets and other charges   9   9  
Interest expense 139 123 267 243  
Income tax expense (benefit) 40 39 98 89  
Add: Other 50 36 89 72  
Segment income (loss) 281 228 619 503  
Capital investments expenditures and acquisitions     1,524 1,373  
Total Assets 40,486 38,562 40,486 38,562  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 574 597 1,299 1,217  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Florida          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 1,885 1,716 3,329 3,152  
Less:          
Operation, maintenance and other 495 251 777 498  
Depreciation and amortization 290 262 564 510  
Property and other taxes 130 117 242 223  
Interest expense 116 114 234 225  
Income tax expense (benefit) 81 75 141 120  
Add: Other 26 20 48 45  
Segment income (loss) 348 312 587 493  
Capital investments expenditures and acquisitions     1,218 1,251  
Total Assets 29,003 27,058 29,003 27,058  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Florida | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 451 605 832 1,128  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 498 476 985 934  
Less:          
Operation, maintenance and other 87 88 179 181  
Depreciation and amortization 83 65 159 131  
Property and other taxes 80 80 166 151  
Interest expense 32 32 63 61  
Income tax expense (benefit) 9 13 18 23  
Add: Other 4 3 8 7  
Segment income (loss) 50 69 98 124  
Capital investments expenditures and acquisitions     303 273  
Total Assets 8,378 8,034 8,378 8,034  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 161 132 310 270  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Cost of natural gas          
Less:          
Cost of sales 0 0 0 0  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Indiana          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 821 747 1,679 1,506  
Less:          
Operation, maintenance and other 189 161 382 339  
Depreciation and amortization 222 172 414 341  
Property and other taxes 17 16 35 30  
Interest expense 56 58 116 115  
Income tax expense (benefit) 20 22 38 36  
Add: Other 22 16 32 29  
Segment income (loss) 120 111 247 180  
Capital investments expenditures and acquisitions     526 489  
Total Assets 15,940 15,590 15,940 15,590  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Indiana | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 219 223 479 494  
Electric Utilities and Infrastructure | Eliminations          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues (15) (18) (30) (36)  
Gas Utilities and Infrastructure          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 471 359 1,587 1,238  
Gas Utilities and Infrastructure | Operating Segments          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 493 381 1,633 1,283  
Less:          
Operation, maintenance and other 129 117 254 246  
Depreciation and amortization 112 96 219 194  
Property and other taxes 41 38 88 84  
Impairment of assets and other charges 0 0 0 0  
Interest expense 65 61 130 122  
Income tax expense (benefit) (4) 2 87 71  
Noncontrolling interests 0 0 0 0  
Preferred dividends 0 0 0 0  
Equity in earnings of unconsolidated affiliates 1 0 6 0  
Add: Other 13 17 26 34  
Segment income (loss) 6 6 355 290  
Capital investments expenditures and acquisitions     548 723  
Total Assets 18,305 17,600 18,305 17,600  
Gas Utilities and Infrastructure | Operating Segments | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 0 0 0 0  
Gas Utilities and Infrastructure | Operating Segments | Cost of natural gas          
Less:          
Cost of sales 158 78 532 310  
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 156 132 435 352  
Less:          
Operation, maintenance and other 27 30 56 62  
Depreciation and amortization 39 31 75 64  
Property and other taxes 21 22 51 53  
Interest expense 18 17 34 32  
Income tax expense (benefit) 3 4 17 13  
Add: Other 2 2 4 4  
Segment income (loss) 15 9 70 50  
Capital investments expenditures and acquisitions     168 144  
Total Assets 4,582 4,389 4,582 4,389  
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 0 0 0 0  
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Cost of natural gas          
Less:          
Cost of sales 35 21 136 82  
Gas Utilities and Infrastructure | Operating Segments | Piedmont          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues 335 244 1,192 920  
Less:          
Operation, maintenance and other 101 83 195 178  
Depreciation and amortization 71 64 141 126  
Property and other taxes 19 16 37 31  
Interest expense 47 43 94 88  
Income tax expense (benefit) (7) (1) 69 58  
Equity in earnings of unconsolidated affiliates 0 0 0 0  
Add: Other 11 15 22 30  
Segment income (loss) (9) (4) 282 241  
Capital investments expenditures and acquisitions     380 571  
Total Assets 11,844 11,208 11,844 11,208  
Gas Utilities and Infrastructure | Operating Segments | Piedmont | Fuel used in electric generation and purchased power          
Less:          
Cost of sales 124 58 396 228  
Gas Utilities and Infrastructure | Eliminations          
Segment Reporting Information, Profit (Loss) [Abstract]          
Operating Revenues $ (22) $ (22) $ (46) $ (45)  
v3.25.2
Regulatory Matters (Regulatory Matters Narrative - Duke Energy Carolinas and Duke Energy Progress) (Details) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 25, 2025
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2026
Apr. 16, 2025
Mar. 21, 2025
Dec. 31, 2024
Public Utilities, General Disclosures [Line Items]              
Capital expenditures   $ 6,428 $ 6,204        
Duke Energy Carolinas and Duke Energy Progress | Hurricanes Debby and Helene              
Public Utilities, General Disclosures [Line Items]              
Storm restoration costs incurred   812          
Capital expenditures, cumulative   468          
Duke Energy Carolinas and Duke Energy Progress | Hurricanes Debby and Helene | Forecast              
Public Utilities, General Disclosures [Line Items]              
Capital expenditures       $ 70      
Duke Energy Carolinas              
Public Utilities, General Disclosures [Line Items]              
Capital expenditures   2,145 1,949        
Duke Energy Carolinas | Hurricanes Debby and Helene              
Public Utilities, General Disclosures [Line Items]              
Storm restoration costs incurred   530          
Increase (reduction) in regulatory liabilities   (82)          
Capital expenditures, cumulative   378          
Duke Energy Progress              
Public Utilities, General Disclosures [Line Items]              
Capital expenditures   1,524 $ 1,373        
Duke Energy Progress | Hurricanes Debby and Helene              
Public Utilities, General Disclosures [Line Items]              
Storm restoration costs incurred   282          
Increase (reduction) in regulatory liabilities   34          
Capital expenditures, cumulative   $ 90          
PSCSC | Duke Energy Carolinas | Hurricane Helene              
Public Utilities, General Disclosures [Line Items]              
Storm reserves           $ 25  
Total storm restoration costs $ 556            
Hurricanes Helene, Debby and Milton | NCUC | Duke Energy Carolinas | North Carolina Storms              
Public Utilities, General Disclosures [Line Items]              
Storm reserves         $ 584   $ 200
Hurricanes Helene, Debby and Milton | NCUC | Duke Energy Progress | North Carolina Storms              
Public Utilities, General Disclosures [Line Items]              
Storm reserves         $ 461   $ 100
v3.25.2
Regulatory Matters (Regulatory Matters Narrative - Duke Energy Carolinas) (Details) - Duke Energy Carolinas - USD ($)
$ in Millions
 1 Months Ended 12 Months Ended 36 Months Ended
Jul. 01, 2025
Dec. 15, 2023
Jan. 19, 2023
Jun. 07, 2021
Aug. 31, 2023
Dec. 14, 2026
Dec. 14, 2025
Dec. 14, 2024
Dec. 14, 2026
Oconee Nuclear Station Subsequent License Renewal | NRC | Oconee Nuclear Station                  
Public Utilities, General Disclosures [Line Items]                  
Operating license extension (in years)       20 years          
2023 North Carolina Rate Case | NCUC                  
Public Utilities, General Disclosures [Line Items]                  
Proposed rate period (in years)     3 years            
Settlement rate, amount         $ 19,500        
Settlement rate, period (in years)         3 years        
Approved rate increase (decrease), amount               $ 436  
Approved return on equity percentage (as a percent)   10.10%              
Approved equity capital structure, percentage (as a percent)   53.00%              
2023 North Carolina Rate Case | NCUC | Forecast                  
Public Utilities, General Disclosures [Line Items]                  
Approved rate increase (decrease), amount           $ 158 $ 174   $ 768
2023 North Carolina Rate Case, Retail Allocated | NCUC                  
Public Utilities, General Disclosures [Line Items]                  
Settlement rate, amount         $ 4,600        
2025 South Carolina Rate Case | PSCSC | Subsequent event                  
Public Utilities, General Disclosures [Line Items]                  
Requested rate increase (decrease), amount $ 151                
Requested return on equity (as a percent) 10.85%                
Requested equity capital structure, percentage (as a percent) 53.00%                
Requested rate increase (decrease) (as a percent) 7.70%                
v3.25.2
Regulatory Matters (Regulatory Matters Narrative - Duke Energy Progress) (Details) - Duke Energy Progress
$ in Millions
 1 Months Ended 12 Months Ended 36 Months Ended
Jun. 12, 2025
USD ($)
Apr. 08, 2025
Feb. 07, 2025
USD ($)
MW
Aug. 18, 2023
USD ($)
Apr. 30, 2023
Oct. 31, 2022
Aug. 17, 2026
USD ($)
Aug. 17, 2025
USD ($)
Aug. 17, 2024
USD ($)
Aug. 17, 2026
USD ($)
2022 North Carolina Rate Case | NCUC                    
Public Utilities, General Disclosures [Line Items]                    
Settlement rate, period (in years)       3 years   3 years        
Proposed rate period (in years)         3 years          
Approved rate increase (decrease), amount                 $ 233  
Settlement rate, amount       $ 12,200            
Approved return on equity percentage (as a percent)       9.80%            
Approved equity capital structure, percentage (as a percent)       53.00%            
2022 North Carolina Rate Case | NCUC | Forecast                    
Public Utilities, General Disclosures [Line Items]                    
Approved rate increase (decrease), amount             $ 135 $ 126   $ 494
2022 North Carolina Rate Case, Retail Allocated | NCUC                    
Public Utilities, General Disclosures [Line Items]                    
Settlement rate, amount       $ 3,500            
Person County Cycle CPCN Proceeding | NCUC                    
Public Utilities, General Disclosures [Line Items]                    
Generation capacity (MW) | MW     1,360              
Generation capacity, co-owned (MW) | MW     225              
Requested rate increase (decrease), amount     $ 113              
Requested rate increase (decrease) (as a percent)     2.60%              
Robinson Subsequent License Renewal | NRC                    
Public Utilities, General Disclosures [Line Items]                    
Operating license extension (in years)   20 years                
2025 South Carolina Rate Case | PSCSC                    
Public Utilities, General Disclosures [Line Items]                    
Requested rate increase (decrease), amount $ 75                  
Requested rate increase (decrease) (as a percent) 12.10%                  
Requested return on equity (as a percent) 10.85%                  
Equity ratio (as a percent) 53.00%                  
v3.25.2
Regulatory Matters (Regulatory Matters Narrative - Duke Energy Florida) (Details)
$ in Millions
 1 Months Ended 6 Months Ended 12 Months Ended
Oct. 31, 2022
USD ($)
Jul. 31, 2020
USD ($)
plant
MW
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Jan. 31, 2025
USD ($)
Aug. 01, 2024
USD ($)
Jul. 31, 2024
USD ($)
Apr. 30, 2022
USD ($)
Public Utilities, General Disclosures [Line Items]                
Regulatory assets     $ 14,172 $ 14,254        
Duke Energy Florida                
Public Utilities, General Disclosures [Line Items]                
Regulatory assets     2,105 2,064        
Duke Energy Florida | Hurricanes Helene, Debby and Milton                
Public Utilities, General Disclosures [Line Items]                
Regulatory assets     $ 454 936        
Capital expenditures       81        
Duke Energy Florida | Solar Project                
Public Utilities, General Disclosures [Line Items]                
Estimated cost of facilities   $ 1,100            
FPSC | Duke Energy Florida                
Public Utilities, General Disclosures [Line Items]                
Number of solar plants | plant   10            
Generation capacity (MW) | MW   749            
Storm Protection Plan | FPSC | Duke Energy Florida                
Public Utilities, General Disclosures [Line Items]                
Cost reduction period (in years) 10 years   10 years          
Investment in transmission and distribution         $ 7,000     $ 7,000
Cost reduction to transmission loop $ 80              
Hurricane Ian | FPSC | Duke Energy Florida | Hurricanes Helene, Debby and Milton                
Public Utilities, General Disclosures [Line Items]                
Storm reserves       $ 1,100   $ 132 $ 63  
v3.25.2
Regulatory Matters (Regulatory Matters Narrative - Duke Energy Ohio) (Details) - USD ($)
$ in Millions
 1 Months Ended
Jun. 02, 2025
May 15, 2024
Oct. 12, 2023
Dec. 31, 2024
Apr. 30, 2024
Apr. 30, 2023
Jun. 30, 2025
Duke Energy Ohio Gas Base Rate Case | PUCO | Duke Energy Ohio              
Public Utilities, General Disclosures [Line Items]              
Requested rate increase (decrease), amount           $ 32  
Equity ratio (as a percent)           52.32%  
Requested return on equity (as a percent)           9.60%  
Duke Energy Ohio Energy Security Plan | PUCO | Duke Energy Ohio              
Public Utilities, General Disclosures [Line Items]              
Settlement rate, period (in years)   3 years     3 years    
Regulatory assets       $ 30     $ 6
Duke Energy Kentucky Electric Base Rate Case | KPSC | Duke Energy Ohio              
Public Utilities, General Disclosures [Line Items]              
Equity ratio (as a percent)     52.145%        
Approved rate increase (decrease), amount     $ 48        
Duke Energy Kentucky Electric Base Rate Case, Electric Base Rates | KPSC | Duke Energy Ohio              
Public Utilities, General Disclosures [Line Items]              
Approved return on equity percentage (as a percent)     9.75%        
Duke Energy Kentucky Electric Base Rate Case, Electric Riders | KPSC | Duke Energy Ohio              
Public Utilities, General Disclosures [Line Items]              
Approved return on equity percentage (as a percent)     9.65%        
Duke Energy Kentucky 2024 Electric Base Rate Case | KPSC | Duke Energy Kentucky              
Public Utilities, General Disclosures [Line Items]              
Requested rate increase (decrease), amount       $ 70      
Equity ratio (as a percent)       52.728%      
Requested return on equity (as a percent)       10.85%      
Requested rate increase, percentage, net of tax       14.70%      
Duke Energy Kentucky 2025 Natural Gas Base Rate Case | KPSC | Duke Energy Kentucky              
Public Utilities, General Disclosures [Line Items]              
Requested rate increase (decrease), amount $ 26            
Equity ratio (as a percent) 52.649%            
Requested return on equity (as a percent) 10.75%            
Requested rate increase, percentage, net of tax 17.00%            
v3.25.2
Regulatory Matters (Regulatory Matters Narrative - Duke Energy Indiana) (Details) - IURC - Duke Energy Indiana
$ in Millions
Feb. 13, 2025
USD ($)
MW
Feb. 07, 2025
USD ($)
Feb. 03, 2025
USD ($)
Apr. 30, 2024
USD ($)
Sep. 20, 2023
Jun. 15, 2022
USD ($)
Indiana Coal Ash Recovery            
Public Utilities, General Disclosures [Line Items]            
Interest rate on refunds (as a percent)         4.71%  
TDSIG 2.0            
Public Utilities, General Disclosures [Line Items]            
Future investment in infrastructure           $ 2,000
2024 Indiana Rate Case            
Public Utilities, General Disclosures [Line Items]            
Future investment in infrastructure       $ 1,600    
Approved return on equity percentage (as a percent)     9.75%      
Equity ratio (as a percent)     53.00%      
Approved rate increase (decrease), amount   $ 385 $ 296      
Cayuga Combined Cycle CPCN, Gas-Fired            
Public Utilities, General Disclosures [Line Items]            
New combustion turbines (in megawatts) | MW 1,476          
Cayuga Combined Cycle CPCN, Coal-Fired            
Public Utilities, General Disclosures [Line Items]            
New combustion turbines (in megawatts) | MW 1,005          
Cayuga Combined Cycle CPCN            
Public Utilities, General Disclosures [Line Items]            
New combustion turbines (in megawatts) | MW 471          
Estimated cost of facilities $ 3,300          
Requested rate increase, percentage, net of tax 5.40%          
v3.25.2
Commitments and Contingencies (Schedule of Environmental Loss Contingencies) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Environmental Matters Details [Line Items]    
Reserves for Environmental Remediation $ 73 $ 73
Duke Energy Carolinas    
Environmental Matters Details [Line Items]    
Reserves for Environmental Remediation 32 24
Progress Energy    
Environmental Matters Details [Line Items]    
Reserves for Environmental Remediation 19 19
Duke Energy Progress    
Environmental Matters Details [Line Items]    
Reserves for Environmental Remediation 9 9
Duke Energy Florida    
Environmental Matters Details [Line Items]    
Reserves for Environmental Remediation 10 10
Duke Energy Ohio    
Environmental Matters Details [Line Items]    
Reserves for Environmental Remediation 14 21
Duke Energy Indiana    
Environmental Matters Details [Line Items]    
Reserves for Environmental Remediation 2 2
Piedmont    
Environmental Matters Details [Line Items]    
Reserves for Environmental Remediation $ 6 $ 7
v3.25.2
Commitments and Contingencies (Narrative) (Details)
$ in Millions
Dec. 20, 2024
plaintiff
Jul. 31, 2025
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Mooresville Coal Ash Class Action Litigation        
Loss Contingencies [Line Items]        
Number of plaintiffs | plaintiff 15      
Duke Energy Carolinas | Asbestos-related Injuries and Damages Claims        
Loss Contingencies [Line Items]        
Asbestos-related injuries and damages reserves     $ 379 $ 396
Probable insurance recoveries     540 539
Duke Energy and Duke Energy Carolinas        
Loss Contingencies [Line Items]        
Reserve for credit losses for insurance receivables     $ 9 $ 9
Duke Energy Indiana | Subsequent event        
Loss Contingencies [Line Items]        
Settlement disbursement period   1 year    
v3.25.2
Debt and Credit Facilities (Summary of Debt Issuances) (Details) - USD ($)
 1 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jan. 31, 2025
Apr. 30, 2024
Debt Instrument [Line Items]        
Debt issuances $ 3,850,000,000      
4.85% January 2025 First Mortgage Bonds Due March 2030 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Interest rate 4.85%      
Debt issuances $ 400,000,000      
5.25% January 2025 First Mortgage Bonds Due March 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Interest rate 5.25%      
Debt issuances $ 700,000,000      
4.35% March 2025 First Mortgage Bonds Due March 2027 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Interest rate 4.35%      
Debt issuances $ 500,000,000      
5.05% March 2025 First Mortgage Bonds Due March 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Interest rate 5.05%      
Debt issuances $ 850,000,000      
5.55% March 2025 First Mortgage Bonds Due March 2055 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Interest rate 5.55%      
Debt issuances $ 750,000,000      
5.90% May 2025 First Mortgage Bonds Due May 2055 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Interest rate 5.90%      
Debt issuances $ 300,000,000      
5.30% June 2025 First Mortgage Bonds Due June 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Interest rate 5.30%      
Debt issuances $ 350,000,000      
Duke Energy (Parent)        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy (Parent) | 4.85% January 2025 First Mortgage Bonds Due March 2030 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy (Parent) | 5.25% January 2025 First Mortgage Bonds Due March 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy (Parent) | 4.35% March 2025 First Mortgage Bonds Due March 2027 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy (Parent) | 5.05% March 2025 First Mortgage Bonds Due March 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy (Parent) | 5.55% March 2025 First Mortgage Bonds Due March 2055 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy (Parent) | 5.90% May 2025 First Mortgage Bonds Due May 2055 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy (Parent) | 5.30% June 2025 First Mortgage Bonds Due June 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Carolinas        
Debt Instrument [Line Items]        
Debt issuances 1,100,000,000      
Duke Energy Carolinas | 4.85% January 2025 First Mortgage Bonds Due March 2030 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 400,000,000      
Duke Energy Carolinas | 5.25% January 2025 First Mortgage Bonds Due March 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 700,000,000      
Duke Energy Carolinas | 4.35% March 2025 First Mortgage Bonds Due March 2027 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Carolinas | 5.05% March 2025 First Mortgage Bonds Due March 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Carolinas | 5.55% March 2025 First Mortgage Bonds Due March 2055 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Carolinas | 5.90% May 2025 First Mortgage Bonds Due May 2055 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Carolinas | 5.30% June 2025 First Mortgage Bonds Due June 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Carolinas | DERF accounts receivable securitization facility due January 2025 | Secured Debt | VIE primary beneficiary        
Debt Instrument [Line Items]        
Repayments of debt     $ 500,000,000  
Duke Energy Carolinas | DEPR accounts receivable securitization facility due April 2025 | Secured Debt | VIE primary beneficiary        
Debt Instrument [Line Items]        
Repayments of debt     $ 500,000,000  
Duke Energy Progress        
Debt Instrument [Line Items]        
Debt issuances 2,100,000,000      
Duke Energy Progress | 4.85% January 2025 First Mortgage Bonds Due March 2030 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Progress | 5.25% January 2025 First Mortgage Bonds Due March 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Progress | 4.35% March 2025 First Mortgage Bonds Due March 2027 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 500,000,000      
Duke Energy Progress | 5.05% March 2025 First Mortgage Bonds Due March 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 850,000,000      
Duke Energy Progress | 5.55% March 2025 First Mortgage Bonds Due March 2055 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 750,000,000      
Duke Energy Progress | 5.90% May 2025 First Mortgage Bonds Due May 2055 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Progress | 5.30% June 2025 First Mortgage Bonds Due June 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Progress | DEPR accounts receivable securitization facility due April 2025 | Secured Debt | VIE primary beneficiary        
Debt Instrument [Line Items]        
Repayments of debt   $ 400,000,000    
Duke Energy Florida        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Florida | 4.85% January 2025 First Mortgage Bonds Due March 2030 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Florida | 5.25% January 2025 First Mortgage Bonds Due March 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Florida | 4.35% March 2025 First Mortgage Bonds Due March 2027 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Florida | 5.05% March 2025 First Mortgage Bonds Due March 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Florida | 5.55% March 2025 First Mortgage Bonds Due March 2055 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Florida | 5.90% May 2025 First Mortgage Bonds Due May 2055 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Florida | 5.30% June 2025 First Mortgage Bonds Due June 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Florida | DEPR accounts receivable securitization facility due April 2025 | Secured Debt | VIE primary beneficiary        
Debt Instrument [Line Items]        
Repayments of debt       $ 325,000,000
Duke Energy Ohio        
Debt Instrument [Line Items]        
Debt issuances 350,000,000      
Duke Energy Ohio | Unsecured Debt        
Debt Instrument [Line Items]        
Repayments of debt 150,000,000      
Duke Energy Ohio | 4.85% January 2025 First Mortgage Bonds Due March 2030 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Ohio | 5.25% January 2025 First Mortgage Bonds Due March 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Ohio | 4.35% March 2025 First Mortgage Bonds Due March 2027 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Ohio | 5.05% March 2025 First Mortgage Bonds Due March 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Ohio | 5.55% March 2025 First Mortgage Bonds Due March 2055 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Ohio | 5.90% May 2025 First Mortgage Bonds Due May 2055 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Ohio | 5.30% June 2025 First Mortgage Bonds Due June 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 350,000,000      
Duke Energy Indiana        
Debt Instrument [Line Items]        
Debt issuances 300,000,000      
Duke Energy Indiana | 4.85% January 2025 First Mortgage Bonds Due March 2030 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Indiana | 5.25% January 2025 First Mortgage Bonds Due March 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Indiana | 4.35% March 2025 First Mortgage Bonds Due March 2027 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Indiana | 5.05% March 2025 First Mortgage Bonds Due March 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Indiana | 5.55% March 2025 First Mortgage Bonds Due March 2055 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Duke Energy Indiana | 5.90% May 2025 First Mortgage Bonds Due May 2055 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 300,000,000      
Duke Energy Indiana | 5.30% June 2025 First Mortgage Bonds Due June 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Piedmont        
Debt Instrument [Line Items]        
Debt issuances 0      
Piedmont | 4.85% January 2025 First Mortgage Bonds Due March 2030 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Piedmont | 5.25% January 2025 First Mortgage Bonds Due March 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Piedmont | 4.35% March 2025 First Mortgage Bonds Due March 2027 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Piedmont | 5.05% March 2025 First Mortgage Bonds Due March 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Piedmont | 5.55% March 2025 First Mortgage Bonds Due March 2055 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Piedmont | 5.90% May 2025 First Mortgage Bonds Due May 2055 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances 0      
Piedmont | 5.30% June 2025 First Mortgage Bonds Due June 2035 | First Mortgage Bonds        
Debt Instrument [Line Items]        
Debt issuances $ 0      
v3.25.2
Debt and Credit Facilities (Narrative) (Details) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended
Feb. 28, 2022
Jan. 31, 2026
Oct. 31, 2025
Apr. 30, 2025
Nov. 30, 2024
Jan. 31, 2024
Dec. 31, 2022
Mar. 31, 2025
Dec. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Aug. 12, 2025
Feb. 28, 2025
Mar. 31, 2022
Debt Instrument [Line Items]                            
Aggregate principal amount                   $ 3,850,000,000        
Repayments of long-term debt                   1,815,000,000 $ 2,731,000,000      
Duke Energy (Parent)                            
Debt Instrument [Line Items]                            
Aggregate principal amount                   0        
Duke Energy Carolinas                            
Debt Instrument [Line Items]                            
Aggregate principal amount                   1,100,000,000        
Repayments of long-term debt                   503,000,000 9,000,000      
Duke Energy Progress                            
Debt Instrument [Line Items]                            
Aggregate principal amount                   2,100,000,000        
Repayments of long-term debt                   423,000,000 41,000,000      
Duke Energy Florida                            
Debt Instrument [Line Items]                            
Aggregate principal amount                   0        
Repayments of long-term debt                   35,000,000 $ 365,000,000      
Unsecured Debt | Notes maturing October 2025 | Forecast                            
Debt Instrument [Line Items]                            
Repayments of long-term debt     $ 95,000,000                      
Unsecured Debt | Notes maturing January 2026 | Forecast                            
Debt Instrument [Line Items]                            
Repayments of long-term debt   $ 45,000,000                        
Unsecured Debt | Duke Energy Kentucky | Senior Unsecured Debentures issued August 2025 | Forecast                            
Debt Instrument [Line Items]                            
Aggregate principal amount                       $ 150,000,000    
Unsecured Debt | Duke Energy Kentucky | Senior Unsecured Debentures maturing September 2030 | Forecast                            
Debt Instrument [Line Items]                            
Aggregate principal amount                       $ 68,000,000    
Interest rate                       5.41%    
Unsecured Debt | Duke Energy Kentucky | Senior Unsecured Debentures maturing September 2035 | Forecast                            
Debt Instrument [Line Items]                            
Aggregate principal amount                       $ 43,000,000    
Interest rate                       6.01%    
Unsecured Debt | Duke Energy Kentucky | Senior Unsecured Debentures maturing September 2037 | Forecast                            
Debt Instrument [Line Items]                            
Aggregate principal amount                       $ 40,000,000    
Interest rate                       6.11%    
Line of Credit | Duke Energy Term Loan Facility                            
Debt Instrument [Line Items]                            
Facility term (in years)         2 years                  
Line of Credit | Duke Energy Carolinas | Duke Energy Term Loan Facility                            
Debt Instrument [Line Items]                            
Facility size         $ 700,000,000         700,000,000        
Extension period (in years)         6 months                  
Increase in term loan facility         $ 300,000,000                  
Borrowing amount       $ 100,000,000       $ 145,000,000 $ 455,000,000          
Line of Credit | Duke Energy Progress | Duke Energy Term Loan Facility                            
Debt Instrument [Line Items]                            
Facility size         $ 250,000,000         250,000,000        
Extension period (in years)         6 months                  
Increase in term loan facility         $ 150,000,000                  
Borrowing amount               65,000,000 185,000,000          
Line of Credit | Duke Energy Florida | Duke Energy Term Loan Facility                            
Debt Instrument [Line Items]                            
Facility size         $ 800,000,000         800,000,000        
Facility term (in years)         364 days                  
Extension period (in years)         4 months                  
Increase in term loan facility         $ 400,000,000                  
Borrowing amount               700,000,000 $ 100,000,000          
Revolving Credit Facility                            
Debt Instrument [Line Items]                            
Facility size               $ 10,000,000,000   10,000,000,000     $ 9,000,000,000  
Revolving Credit Facility | Duke Energy Carolinas                            
Debt Instrument [Line Items]                            
Facility size                   1,000,000,000        
Revolving Credit Facility | Duke Energy Progress                            
Debt Instrument [Line Items]                            
Facility size                   1,125,000,000        
Revolving Credit Facility | Duke Energy Florida                            
Debt Instrument [Line Items]                            
Facility size                   $ 1,150,000,000        
Revolving Credit Facility | Line of Credit | Duke Energy (Parent) | Three-Year Revolving Credit Facility                            
Debt Instrument [Line Items]                            
Facility size $ 1,000,000,000                          
Facility term (in years) 3 years                          
Unsecured Debt | Line of Credit | Duke Energy (Parent) | Term Loan Credit Facility                            
Debt Instrument [Line Items]                            
Facility size                           $ 1,400,000,000
Repayments of debt           $ 1,000,000,000 $ 400,000,000              
v3.25.2
Debt and Credit Facilities (Summary of Current Maturities of Long-term Debt) (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Debt Instrument [Line Items]    
Current maturities of long-term debt $ 5,046 $ 4,349
Other debt securities    
Debt Instrument [Line Items]    
Current maturities of long-term debt $ 253  
Duke Energy (Parent) | Debt Maturing September 2025 | Unsecured Debt    
Debt Instrument [Line Items]    
Interest rate 0.90%  
Current maturities of long-term debt $ 650  
Duke Energy (Parent) | Debt Maturing December 2025 | Unsecured Debt    
Debt Instrument [Line Items]    
Interest rate 5.00%  
Current maturities of long-term debt $ 500  
Duke Energy (Parent) | Debt Maturing April 2026 | Unsecured Debt    
Debt Instrument [Line Items]    
Interest rate 4.125%  
Current maturities of long-term debt $ 1,725  
Duke Energy Ohio    
Debt Instrument [Line Items]    
Current maturities of long-term debt $ 140 245
Duke Energy Ohio | Debt Maturing October 2025 | Unsecured Debt    
Debt Instrument [Line Items]    
Interest rate 3.23%  
Current maturities of long-term debt $ 95  
Piedmont    
Debt Instrument [Line Items]    
Current maturities of long-term debt $ 205 205
Piedmont | Debt Maturing September 2025 | Unsecured Debt    
Debt Instrument [Line Items]    
Interest rate 3.60%  
Current maturities of long-term debt $ 150  
Duke Energy Florida    
Debt Instrument [Line Items]    
Current maturities of long-term debt $ 1,235 534
Duke Energy Florida | Debt Maturing October 2025 | Unsecured Debt    
Debt Instrument [Line Items]    
Interest rate 5.071%  
Current maturities of long-term debt $ 800  
Duke Energy Florida | Debt Maturing October 2073 and April 2074 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Facility term (in years) 12 months  
Duke Energy Florida | Debt Maturing October 2073 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Interest rate 4.009%  
Current maturities of long-term debt $ 200  
Duke Energy Florida | Debt Maturing April 2074 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Interest rate 4.009%  
Current maturities of long-term debt $ 173  
Duke Energy Progress    
Debt Instrument [Line Items]    
Current maturities of long-term debt $ 582 $ 983
Duke Energy Progress | Debt Maturing August 2025 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Interest rate 3.25%  
Current maturities of long-term debt $ 500  
v3.25.2
Debt and Credit Facilities (Schedule of Line of Credit Facilities) (Details) - Revolving Credit Facility - USD ($)
Jun. 30, 2025
Mar. 31, 2025
Feb. 28, 2025
Line of Credit Facility [Line Items]      
Facility size $ 10,000,000,000 $ 10,000,000,000 $ 9,000,000,000
Commercial paper (3,017,000,000)    
Outstanding letters of credit (14,000,000)    
Tax-exempt bonds (81,000,000)    
Available capacity under the Master Credit Facility 6,888,000,000    
Duke Energy Carolinas      
Line of Credit Facility [Line Items]      
Facility size 1,000,000,000    
Commercial paper (300,000,000)    
Outstanding letters of credit (4,000,000)    
Tax-exempt bonds 0    
Available capacity under the Master Credit Facility 696,000,000    
Duke Energy Progress      
Line of Credit Facility [Line Items]      
Facility size 1,125,000,000    
Commercial paper (150,000,000)    
Outstanding letters of credit (1,000,000)    
Tax-exempt bonds 0    
Available capacity under the Master Credit Facility 974,000,000    
Duke Energy Florida      
Line of Credit Facility [Line Items]      
Facility size 1,150,000,000    
Commercial paper (1,000,000)    
Outstanding letters of credit (7,000,000)    
Tax-exempt bonds 0    
Available capacity under the Master Credit Facility 1,142,000,000    
Duke Energy Ohio      
Line of Credit Facility [Line Items]      
Facility size 950,000,000    
Commercial paper (26,000,000)    
Outstanding letters of credit 0    
Tax-exempt bonds 0    
Available capacity under the Master Credit Facility 924,000,000    
Duke Energy Indiana      
Line of Credit Facility [Line Items]      
Facility size 800,000,000    
Commercial paper (150,000,000)    
Outstanding letters of credit 0    
Tax-exempt bonds (81,000,000)    
Available capacity under the Master Credit Facility 569,000,000    
Piedmont      
Line of Credit Facility [Line Items]      
Facility size 1,050,000,000    
Commercial paper (5,000,000)    
Outstanding letters of credit 0    
Tax-exempt bonds 0    
Available capacity under the Master Credit Facility 1,045,000,000    
Duke Energy (Parent) | Proceeds loaned to subsidiary registrants      
Line of Credit Facility [Line Items]      
Commercial paper (625,000,000)    
Duke Energy (Parent) | Duke Energy (Parent)      
Line of Credit Facility [Line Items]      
Facility size 3,925,000,000    
Commercial paper (2,385,000,000)    
Outstanding letters of credit (2,000,000)    
Tax-exempt bonds 0    
Available capacity under the Master Credit Facility $ 1,538,000,000    
v3.25.2
Goodwill (Details) - USD ($)
Jun. 30, 2025
Dec. 31, 2024
Goodwill [Line Items]    
Goodwill $ 19,303,000,000 $ 19,303,000,000
Accumulated impairment charges 0 0
Duke Energy Ohio    
Goodwill [Line Items]    
Goodwill 920,000,000 920,000,000
Accumulated impairment charges 216,000,000 216,000,000
Progress Energy    
Goodwill [Line Items]    
Goodwill 3,655,000,000 3,655,000,000
Piedmont    
Goodwill [Line Items]    
Goodwill 49,000,000 49,000,000
Electric Utilities and Infrastructure    
Goodwill [Line Items]    
Goodwill 17,400,000,000 17,400,000,000
Electric Utilities and Infrastructure | Duke Energy Ohio    
Goodwill [Line Items]    
Goodwill 596,000,000 596,000,000
Electric Utilities and Infrastructure | Progress Energy    
Goodwill [Line Items]    
Accumulated impairment charges 0 0
Gas Utilities and Infrastructure    
Goodwill [Line Items]    
Goodwill 1,900,000,000 1,900,000,000
Gas Utilities and Infrastructure | Duke Energy Ohio    
Goodwill [Line Items]    
Goodwill 324,000,000 324,000,000
Gas Utilities and Infrastructure | Piedmont    
Goodwill [Line Items]    
Accumulated impairment charges $ 0 $ 0
v3.25.2
Related Party Transactions (Other Revenue and Expense) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party $ 5,692 $ 5,471 $ 11,604 $ 11,191
Duke Energy Carolinas        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 1,637 1,752 3,458 3,555
Duke Energy Carolinas | Corporate governance and shared service expenses | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 157 189 335 403
Duke Energy Carolinas | Indemnification coverages | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 14 11 27 22
Duke Energy Carolinas | JDA | Duke Energy Progress        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 71 53 187 93
Related party transaction, other revenues from transactions with related party 8 6 90 22
Duke Energy Carolinas | Intercompany natural gas purchases and sales | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 2 5 4 9
Progress Energy        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 2,652 2,533 5,249 5,049
Progress Energy | Corporate governance and shared service expenses | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 141 171 291 359
Progress Energy | Indemnification coverages | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 16 15 32 29
Progress Energy | JDA | Duke Energy Carolinas        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 8 6 90 22
Related party transaction, other revenues from transactions with related party 71 53 187 93
Progress Energy | Intercompany natural gas purchases and sales | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 19 18 38 37
Duke Energy Progress        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 1,278 1,288 2,818 2,673
Duke Energy Progress | Corporate governance and shared service expenses | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 81 100 167 214
Duke Energy Progress | Indemnification coverages | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 6 6 13 12
Duke Energy Progress | JDA | Duke Energy Carolinas        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 8 6 90 22
Related party transaction, other revenues from transactions with related party 71 53 187 93
Duke Energy Progress | Intercompany natural gas purchases and sales | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 19 18 38 37
Duke Energy Florida        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 1,371 1,240 2,424 2,368
Duke Energy Florida | Corporate governance and shared service expenses | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 60 71 124 145
Duke Energy Florida | Indemnification coverages | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 10 9 19 17
Duke Energy Ohio        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 533 472 1,135 998
Duke Energy Ohio | Corporate governance and shared service expenses | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 70 77 134 154
Duke Energy Ohio | Indemnification coverages | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 2 1 3 3
Duke Energy Indiana        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 650 572 1,315 1,206
Duke Energy Indiana | Corporate governance and shared service expenses | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 73 83 144 185
Duke Energy Indiana | Indemnification coverages | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 3 3 5 5
Piedmont        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 317 223 773 565
Piedmont | Corporate governance and shared service expenses | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 36 40 67 81
Piedmont | Indemnification coverages | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party 2 1 3 2
Piedmont | Intercompany natural gas purchases and sales | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, other revenues from transactions with related party 21 23 42 46
Piedmont | Natural gas storage and transportation costs | Related Party        
Related Party Transaction [Line Items]        
Related party transaction, expenses from transactions with related party $ 5 $ 6 $ 11 $ 12
v3.25.2
Related Party Transactions (Intercompany Income Taxes) (Details) - Related Party - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Duke Energy Carolinas    
Related Party Transaction [Line Items]    
Intercompany income tax receivable $ 0 $ 0
Intercompany income tax payable 85 419
Progress Energy    
Related Party Transaction [Line Items]    
Intercompany income tax receivable 0 0
Intercompany income tax payable 119 169
Duke Energy Progress    
Related Party Transaction [Line Items]    
Intercompany income tax receivable 16 0
Intercompany income tax payable 0 315
Duke Energy Florida    
Related Party Transaction [Line Items]    
Intercompany income tax receivable 0 154
Intercompany income tax payable 153 0
Duke Energy Ohio    
Related Party Transaction [Line Items]    
Intercompany income tax receivable 0 0
Intercompany income tax payable 15 43
Duke Energy Indiana    
Related Party Transaction [Line Items]    
Intercompany income tax receivable 0 0
Intercompany income tax payable 27 110
Piedmont    
Related Party Transaction [Line Items]    
Intercompany income tax receivable 45 0
Intercompany income tax payable $ 0 $ 43
v3.25.2
Derivatives and Hedging (Notional Amounts of Derivative Instruments) (Details)
Mcf in Millions, $ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2025
USD ($)
GWh
Mcf
Dec. 31, 2024
USD ($)
GWh
Mcf
Interest Rate Contracts    
Derivative [Line Items]    
Notional amount $ 7,252 $ 6,027
Commodity contracts | Electricity (GWh)    
Derivative [Line Items]    
Notional amount, energy measure (in gigawatt-hours) | GWh 24,145 12,229
Commodity contracts | Natural gas (millions of dekatherms)    
Derivative [Line Items]    
Notional amount, volume (in millions of dekatherms) | Mcf 778 779
Designated contracts | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount $ 3,225 $ 2,825
Undesignated contracts | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount 4,027 3,202
Duke Energy Carolinas | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount $ 1,875 $ 1,150
Duke Energy Carolinas | Commodity contracts | Electricity (GWh)    
Derivative [Line Items]    
Notional amount, energy measure (in gigawatt-hours) | GWh 0 0
Duke Energy Carolinas | Commodity contracts | Natural gas (millions of dekatherms)    
Derivative [Line Items]    
Notional amount, volume (in millions of dekatherms) | Mcf 290 276
Duke Energy Carolinas | Designated contracts | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount $ 0 $ 0
Duke Energy Carolinas | Undesignated contracts | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount 1,875 1,150
Progress Energy | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount $ 1,800 $ 1,775
Progress Energy | Commodity contracts | Electricity (GWh)    
Derivative [Line Items]    
Notional amount, energy measure (in gigawatt-hours) | GWh 0 0
Progress Energy | Commodity contracts | Natural gas (millions of dekatherms)    
Derivative [Line Items]    
Notional amount, volume (in millions of dekatherms) | Mcf 255 246
Progress Energy | Designated contracts | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount $ 0 $ 0
Progress Energy | Undesignated contracts | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount 1,800 1,775
Duke Energy Progress | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount $ 600 $ 1,125
Duke Energy Progress | Commodity contracts | Electricity (GWh)    
Derivative [Line Items]    
Notional amount, energy measure (in gigawatt-hours) | GWh 0 0
Duke Energy Progress | Commodity contracts | Natural gas (millions of dekatherms)    
Derivative [Line Items]    
Notional amount, volume (in millions of dekatherms) | Mcf 255 246
Duke Energy Progress | Designated contracts | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount $ 0 $ 0
Duke Energy Progress | Undesignated contracts | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount 600 1,125
Duke Energy Florida | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount 1,200 650
Duke Energy Florida | Designated contracts | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount 0 0
Duke Energy Florida | Undesignated contracts | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount 1,200 650
Duke Energy Indiana | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount $ 325 $ 250
Duke Energy Indiana | Commodity contracts | Electricity (GWh)    
Derivative [Line Items]    
Notional amount, energy measure (in gigawatt-hours) | GWh 21,145 10,942
Duke Energy Indiana | Commodity contracts | Natural gas (millions of dekatherms)    
Derivative [Line Items]    
Notional amount, volume (in millions of dekatherms) | Mcf 27 32
Duke Energy Indiana | Designated contracts | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount $ 0 $ 0
Duke Energy Indiana | Undesignated contracts | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount 325 250
Duke Energy Ohio | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount $ 27 $ 27
Duke Energy Ohio | Commodity contracts | Electricity (GWh)    
Derivative [Line Items]    
Notional amount, energy measure (in gigawatt-hours) | GWh 3,000 1,287
Duke Energy Ohio | Commodity contracts | Natural gas (millions of dekatherms)    
Derivative [Line Items]    
Notional amount, volume (in millions of dekatherms) | Mcf 0 0
Duke Energy Ohio | Designated contracts | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount $ 0 $ 0
Duke Energy Ohio | Undesignated contracts | Interest Rate Contracts    
Derivative [Line Items]    
Notional amount $ 27 $ 27
Piedmont | Commodity contracts | Electricity (GWh)    
Derivative [Line Items]    
Notional amount, energy measure (in gigawatt-hours) | GWh 0 0
Piedmont | Commodity contracts | Natural gas (millions of dekatherms)    
Derivative [Line Items]    
Notional amount, volume (in millions of dekatherms) | Mcf 206 225
v3.25.2
Derivatives and Hedging (Foreign Exchange Risk) (Details) - Foreign Currency Contracts - Designated contracts
€ in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2025
EUR (€)
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Notional amount $ 1,997   $ 1,997    
Receive notional | €         € 1,850
Fair value gain (loss) 180 $ (13) 266 $ (9)  
Senior Notes, 3.10% Due June 2028          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Notional amount $ 645   $ 645    
Pay Rate 4.75%   4.75%   4.75%
Receive notional | €         € 600
Rate 0.0310   0.0310   0.0310
Fair value gain (loss) $ 58 (2) $ 86 0  
Senior Notes, 3.85% Due June 2034          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Notional amount $ 537   $ 537    
Pay Rate 5.31%   5.31%   5.31%
Receive notional | €         € 500
Rate 0.0385   0.0385   0.0385
Fair value gain (loss) $ 49 (2) $ 72 0  
Senior Notes, 3.75% Due April 2031          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Notional amount $ 815   $ 815    
Pay Rate 5.65%   5.65%   5.65%
Receive notional | €         € 750
Rate 0.0375   0.0375   0.0375
Fair value gain (loss) $ 73 $ (9) $ 108 $ (9)  
v3.25.2
Derivatives and Hedging (Location and Fair Value Amounts of Derivatives Reflected in the Condensed Consolidated Balance Sheets) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Derivatives, Fair Value [Line Items]    
Derivative assets $ 539 $ 434
Derivative liabilities 256 319
Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 180 267
Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 359 167
Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 112 145
Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 144 174
Commodity Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 183 109
Derivative liabilities 189 242
Interest Rate Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 161 320
Derivative liabilities 42 3
Foreign Currency Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 195 5
Derivative liabilities 25 74
Designated as Hedging Instruments | Interest Rate Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 84  
Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 26  
Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   108
Derivative liabilities 5  
Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   52
Derivative liabilities 2  
Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 195  
Designated as Hedging Instruments | Foreign Currency Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 25 35
Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   5
Derivative liabilities   39
Not Designated as Hedging Instruments | Commodity Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 93 49
Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 90 60
Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 70 108
Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 119 134
Not Designated as Hedging Instruments | Interest Rate Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 3 110
Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 48 50
Not Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 12 2
Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 23 1
Duke Energy Carolinas    
Derivatives, Fair Value [Line Items]    
Derivative assets 110 94
Derivative liabilities 60 88
Duke Energy Carolinas | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 37 39
Duke Energy Carolinas | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 73 55
Duke Energy Carolinas | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 35 57
Duke Energy Carolinas | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 25 31
Duke Energy Carolinas | Commodity Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 82 49
Derivative liabilities 51 88
Duke Energy Carolinas | Interest Rate Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 28 45
Derivative liabilities 9 0
Duke Energy Carolinas | Foreign Currency Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Derivative liabilities 0 0
Duke Energy Carolinas | Designated as Hedging Instruments | Interest Rate Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Duke Energy Carolinas | Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Duke Energy Carolinas | Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities 0  
Duke Energy Carolinas | Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities 0  
Duke Energy Carolinas | Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Duke Energy Carolinas | Designated as Hedging Instruments | Foreign Currency Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 0
Duke Energy Carolinas | Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities   0
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 37 20
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 45 29
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 35 57
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 16 31
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 19
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 28 26
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 0
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 9 0
Progress Energy    
Derivatives, Fair Value [Line Items]    
Derivative assets 102 127
Derivative liabilities 41 58
Progress Energy | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 36 72
Progress Energy | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 66 55
Progress Energy | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 21 34
Progress Energy | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 20 24
Progress Energy | Commodity Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 78 49
Derivative liabilities 21 56
Progress Energy | Interest Rate Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 24 78
Derivative liabilities 20 2
Progress Energy | Foreign Currency Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Derivative liabilities 0 0
Progress Energy | Designated as Hedging Instruments | Interest Rate Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Progress Energy | Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Progress Energy | Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities 0  
Progress Energy | Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities 0  
Progress Energy | Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Progress Energy | Designated as Hedging Instruments | Foreign Currency Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 0
Progress Energy | Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities   0
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 33 17
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 45 32
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 10 32
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 11 24
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 3 55
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 21 23
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 11 2
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 9 0
Duke Energy Progress    
Derivatives, Fair Value [Line Items]    
Derivative assets 91 109
Derivative liabilities 25 57
Duke Energy Progress | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 33 61
Duke Energy Progress | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 58 48
Duke Energy Progress | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 10 33
Duke Energy Progress | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 15 24
Duke Energy Progress | Commodity Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 78 49
Derivative liabilities 21 56
Duke Energy Progress | Interest Rate Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 13 60
Derivative liabilities 4 1
Duke Energy Progress | Foreign Currency Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Derivative liabilities 0 0
Duke Energy Progress | Designated as Hedging Instruments | Interest Rate Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Duke Energy Progress | Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Duke Energy Progress | Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities 0  
Duke Energy Progress | Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities 0  
Duke Energy Progress | Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Duke Energy Progress | Designated as Hedging Instruments | Foreign Currency Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 0
Duke Energy Progress | Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities   0
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 33 17
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 45 32
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 10 32
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 11 24
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 44
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 13 16
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 1
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 4 0
Duke Energy Florida    
Derivatives, Fair Value [Line Items]    
Derivative assets 10 18
Derivative liabilities 16 1
Duke Energy Florida | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 3 11
Duke Energy Florida | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 7 7
Duke Energy Florida | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 11 1
Duke Energy Florida | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 5 0
Duke Energy Florida | Commodity Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Derivative liabilities 0 0
Duke Energy Florida | Interest Rate Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 10 18
Derivative liabilities 16 1
Duke Energy Florida | Foreign Currency Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Derivative liabilities 0 0
Duke Energy Florida | Designated as Hedging Instruments | Interest Rate Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Duke Energy Florida | Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Duke Energy Florida | Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities 0  
Duke Energy Florida | Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities 0  
Duke Energy Florida | Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Duke Energy Florida | Designated as Hedging Instruments | Foreign Currency Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 0
Duke Energy Florida | Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities   0
Duke Energy Florida | Not Designated as Hedging Instruments | Commodity Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Duke Energy Florida | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Duke Energy Florida | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 0
Duke Energy Florida | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 0
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 3 11
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 7 7
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 11 1
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 5 0
Duke Energy Ohio    
Derivatives, Fair Value [Line Items]    
Derivative assets 1 1
Derivative liabilities 1 1
Duke Energy Ohio | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 1 1
Duke Energy Ohio | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Duke Energy Ohio | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 0
Duke Energy Ohio | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 1 1
Duke Energy Ohio | Commodity Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 1 1
Derivative liabilities 0 0
Duke Energy Ohio | Interest Rate Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Derivative liabilities 1 1
Duke Energy Ohio | Foreign Currency Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Derivative liabilities 0 0
Duke Energy Ohio | Designated as Hedging Instruments | Interest Rate Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Duke Energy Ohio | Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Duke Energy Ohio | Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities 0  
Duke Energy Ohio | Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities 0  
Duke Energy Ohio | Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Duke Energy Ohio | Designated as Hedging Instruments | Foreign Currency Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 0
Duke Energy Ohio | Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities   0
Duke Energy Ohio | Not Designated as Hedging Instruments | Commodity Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 1 1
Duke Energy Ohio | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Duke Energy Ohio | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 0
Duke Energy Ohio | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 0
Duke Energy Ohio | Not Designated as Hedging Instruments | Interest Rate Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Duke Energy Ohio | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Duke Energy Ohio | Not Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 0
Duke Energy Ohio | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 1 1
Duke Energy Indiana    
Derivatives, Fair Value [Line Items]    
Derivative assets 21 44
Derivative liabilities 7 3
Duke Energy Indiana | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 21 44
Duke Energy Indiana | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Duke Energy Indiana | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 2 3
Duke Energy Indiana | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 5 0
Duke Energy Indiana | Commodity Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 21 8
Derivative liabilities 2 3
Duke Energy Indiana | Interest Rate Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 36
Derivative liabilities 5 0
Duke Energy Indiana | Foreign Currency Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Derivative liabilities 0 0
Duke Energy Indiana | Designated as Hedging Instruments | Interest Rate Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Duke Energy Indiana | Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Duke Energy Indiana | Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities 0  
Duke Energy Indiana | Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities 0  
Duke Energy Indiana | Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Duke Energy Indiana | Designated as Hedging Instruments | Foreign Currency Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 0
Duke Energy Indiana | Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities   0
Duke Energy Indiana | Not Designated as Hedging Instruments | Commodity Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 21 8
Duke Energy Indiana | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Duke Energy Indiana | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 2 3
Duke Energy Indiana | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 0
Duke Energy Indiana | Not Designated as Hedging Instruments | Interest Rate Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 36
Duke Energy Indiana | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Duke Energy Indiana | Not Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 0
Duke Energy Indiana | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 5 0
Piedmont    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 1
Derivative liabilities 115 94
Piedmont | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 1
Piedmont | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Piedmont | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 24 16
Piedmont | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 91 78
Piedmont | Commodity Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 1
Derivative liabilities 115 94
Piedmont | Interest Rate Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Derivative liabilities 0 0
Piedmont | Foreign Currency Contracts    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Derivative liabilities 0 0
Piedmont | Designated as Hedging Instruments | Interest Rate Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Piedmont | Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Piedmont | Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities 0  
Piedmont | Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities 0  
Piedmont | Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0  
Piedmont | Designated as Hedging Instruments | Foreign Currency Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 0
Piedmont | Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative assets   0
Derivative liabilities   0
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 1
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 24 16
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 91 78
Piedmont | Not Designated as Hedging Instruments | Interest Rate Contracts | Current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Piedmont | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets    
Derivatives, Fair Value [Line Items]    
Derivative assets 0 0
Piedmont | Not Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities 0 0
Piedmont | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liabilities $ 0 $ 0
v3.25.2
Derivatives and Hedging (Offsetting Assets) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized $ 539 $ 434
Derivative assets, current $ 160 $ 238
Derivative assets, current, location Current Assets: Other Current Assets: Other
Derivative assets, noncurrent $ 336 $ 130
Derivative assets, noncurrent, location Other Other
Current assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized $ 180 $ 267
Offset (20) (29)
Noncurrent assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 359 167
Offset (23) (37)
Duke Energy Carolinas    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 110 94
Derivative assets, current 27 24
Derivative assets, noncurrent 61 36
Duke Energy Carolinas | Current assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 37 39
Offset (10) (15)
Duke Energy Carolinas | Noncurrent assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 73 55
Offset (12) (19)
Progress Energy    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 102 127
Derivative assets, current 26 58
Derivative assets, noncurrent 54 38
Progress Energy | Current assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 36 72
Offset (10) (14)
Progress Energy | Noncurrent assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 66 55
Offset (12) (17)
Duke Energy Progress    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 91 109
Derivative assets, current 23 47
Derivative assets, noncurrent 46 31
Duke Energy Progress | Current assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 33 61
Offset (10) (14)
Duke Energy Progress | Noncurrent assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 58 48
Offset (12) (17)
Duke Energy Florida    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 10 18
Derivative assets, current 3 11
Derivative assets, noncurrent 7 7
Duke Energy Florida | Current assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 3 11
Offset 0 0
Duke Energy Florida | Noncurrent assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 7 7
Offset 0 0
Duke Energy Ohio    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 1 1
Derivative assets, current 1 1
Derivative assets, noncurrent 0 0
Duke Energy Ohio | Current assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 1 1
Offset 0 0
Duke Energy Ohio | Noncurrent assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 0 0
Offset 0 0
Duke Energy Indiana    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 21 44
Derivative assets, current 21 44
Derivative assets, noncurrent 0 0
Duke Energy Indiana | Current assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 21 44
Offset 0 0
Duke Energy Indiana | Noncurrent assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 0 0
Offset 0 0
Piedmont    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 0 1
Derivative assets, current 0 1
Derivative assets, noncurrent 0 0
Piedmont | Current assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 0 1
Offset 0 0
Piedmont | Noncurrent assets    
Offsetting Derivative Assets [Abstract]    
Gross amounts recognized 0 0
Offset $ 0 $ 0
v3.25.2
Derivatives and Hedging (Offsetting Liabilities) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized $ 256 $ 319
Derivative liabilities, current $ 91 $ 113
Derivative liabilities, current, location Current Liabilities: Other Current Liabilities: Other
Derivative liabilities, noncurrent $ 121 $ 133
Derivative liabilities, noncurrent, location Other Other
Current liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized $ 112 $ 145
Offset (20) (29)
Cash collateral posted (1) (3)
Noncurrent liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 144 174
Offset (23) (37)
Cash collateral posted   (4)
Duke Energy Carolinas    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 60 88
Derivative liabilities, current 25 40
Derivative liabilities, noncurrent 13 8
Duke Energy Carolinas | Current liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 35 57
Offset (10) (15)
Cash collateral posted 0 (2)
Duke Energy Carolinas | Noncurrent liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 25 31
Offset (12) (19)
Cash collateral posted   (4)
Progress Energy    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 41 58
Derivative liabilities, current 11 20
Derivative liabilities, noncurrent 8 7
Progress Energy | Current liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 21 34
Offset (10) (14)
Cash collateral posted 0 0
Progress Energy | Noncurrent liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 20 24
Offset (12) (17)
Cash collateral posted   0
Duke Energy Progress    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 25 57
Derivative liabilities, current 0 19
Derivative liabilities, noncurrent 3 7
Duke Energy Progress | Current liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 10 33
Offset (10) (14)
Cash collateral posted 0 0
Duke Energy Progress | Noncurrent liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 15 24
Offset (12) (17)
Cash collateral posted   0
Duke Energy Florida    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 16 1
Derivative liabilities, current 11 1
Derivative liabilities, noncurrent 5 0
Duke Energy Florida | Current liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 11 1
Offset 0 0
Cash collateral posted 0 0
Duke Energy Florida | Noncurrent liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 5 0
Offset 0 0
Cash collateral posted   0
Duke Energy Ohio    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 1 1
Derivative liabilities, current 0 0
Derivative liabilities, noncurrent 1 1
Duke Energy Ohio | Current liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 0 0
Offset 0 0
Cash collateral posted 0 0
Duke Energy Ohio | Noncurrent liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 1 1
Offset 0 0
Cash collateral posted   0
Duke Energy Indiana    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 7 3
Derivative liabilities, current 1 2
Derivative liabilities, noncurrent 5 0
Duke Energy Indiana | Current liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 2 3
Offset 0 0
Cash collateral posted (1) (1)
Duke Energy Indiana | Noncurrent liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 5 0
Offset 0 0
Cash collateral posted   0
Piedmont    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 115 94
Derivative liabilities, current 24 16
Derivative liabilities, noncurrent 91 78
Piedmont | Current liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 24 16
Offset 0 0
Cash collateral posted 0 0
Piedmont | Noncurrent liabilities    
Offsetting Derivative Liabilities [Abstract]    
Gross amounts recognized 91 78
Offset $ 0 0
Cash collateral posted   $ 0
v3.25.2
Derivatives and Hedging (Derivative Instruments with Credit-Risk Related Contingent Features and Cash Collateral) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features    
Aggregate fair value of derivatives in a net liability position $ 9 $ 101
Fair value of collateral already posted   6
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered 9 95
Duke Energy Carolinas    
Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features    
Aggregate fair value of derivatives in a net liability position 9 52
Fair value of collateral already posted   6
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered 9 46
Progress Energy    
Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features    
Aggregate fair value of derivatives in a net liability position 0 49
Fair value of collateral already posted   0
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered 0 49
Duke Energy Progress    
Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features    
Aggregate fair value of derivatives in a net liability position 0 49
Fair value of collateral already posted   0
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered $ 0 $ 49
v3.25.2
Investments in Debt and Equity Securities (Estimated Fair Value of Investments in Debt and Equity Securities) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Debt Securities, Available-for-sale    
Estimated Fair Value $ 3,565  
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]    
Gross Unrealized Holding Gains 6,289 $ 5,804
Gross Unrealized Holding Losses 150 219
Estimated Fair Value 12,610 11,905
NDTF    
Cash and Cash Equivalents    
Estimated Fair Value 145 139
Equity Securities, FV-NI    
Gross Unrealized Holding Gains 6,210 5,753
Gross Unrealized Holding Losses 36 61
Estimated Fair Value 8,637 8,233
Debt Securities, Available-for-sale    
Estimated Fair Value 3,327 3,060
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]    
Gross Unrealized Holding Gains 6,244 5,765
Gross Unrealized Holding Losses 137 200
Estimated Fair Value 12,109 11,432
Other Investments    
Cash and Cash Equivalents    
Estimated Fair Value 138 47
Equity Securities, FV-NI    
Gross Unrealized Holding Gains 45 39
Gross Unrealized Holding Losses 0 4
Estimated Fair Value 125 160
Debt Securities, Available-for-sale    
Estimated Fair Value 238 266
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]    
Gross Unrealized Holding Gains 45 39
Gross Unrealized Holding Losses 13 19
Estimated Fair Value 501 473
Duke Energy Carolinas    
Debt Securities, Available-for-sale    
Estimated Fair Value 1,836  
Duke Energy Carolinas | NDTF    
Cash and Cash Equivalents    
Estimated Fair Value 60 62
Equity Securities, FV-NI    
Gross Unrealized Holding Gains 3,638 3,386
Gross Unrealized Holding Losses 18 33
Estimated Fair Value 4,983 4,751
Debt Securities, Available-for-sale    
Estimated Fair Value 1,836 1,651
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]    
Gross Unrealized Holding Gains 3,655 3,389
Gross Unrealized Holding Losses 84 122
Estimated Fair Value 6,879 6,464
Progress Energy    
Debt Securities, Available-for-sale    
Estimated Fair Value 1,514  
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]    
Gross Unrealized Holding Gains 2,589 2,376
Gross Unrealized Holding Losses 54 78
Estimated Fair Value 5,269 5,015
Progress Energy | NDTF    
Cash and Cash Equivalents    
Estimated Fair Value 85 77
Equity Securities, FV-NI    
Gross Unrealized Holding Gains 2,572 2,367
Gross Unrealized Holding Losses 18 28
Estimated Fair Value 3,654 3,482
Debt Securities, Available-for-sale    
Estimated Fair Value 1,491 1,409
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]    
Gross Unrealized Holding Gains 2,589 2,376
Gross Unrealized Holding Losses 53 78
Estimated Fair Value 5,230 4,968
Progress Energy | Other Investments    
Cash and Cash Equivalents    
Estimated Fair Value 16 23
Debt Securities, Available-for-sale    
Estimated Fair Value 23 24
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]    
Gross Unrealized Holding Gains 0 0
Gross Unrealized Holding Losses 1 0
Estimated Fair Value 39 47
Duke Energy Progress    
Debt Securities, Available-for-sale    
Estimated Fair Value 1,324  
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]    
Gross Unrealized Holding Gains 2,473 2,265
Gross Unrealized Holding Losses 48 70
Estimated Fair Value 4,933 4,653
Duke Energy Progress | NDTF    
Cash and Cash Equivalents    
Estimated Fair Value 67 54
Equity Securities, FV-NI    
Gross Unrealized Holding Gains 2,457 2,256
Gross Unrealized Holding Losses 18 28
Estimated Fair Value 3,531 3,362
Debt Securities, Available-for-sale    
Estimated Fair Value 1,324 1,221
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]    
Gross Unrealized Holding Gains 2,473 2,265
Gross Unrealized Holding Losses 48 70
Estimated Fair Value 4,922 4,637
Duke Energy Progress | Other Investments    
Cash and Cash Equivalents    
Estimated Fair Value 11 16
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]    
Gross Unrealized Holding Gains 0 0
Gross Unrealized Holding Losses 0 0
Estimated Fair Value 11 16
Duke Energy Florida    
Debt Securities, Available-for-sale    
Estimated Fair Value 190  
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]    
Gross Unrealized Holding Gains 116 111
Gross Unrealized Holding Losses 6 8
Estimated Fair Value 333 358
Duke Energy Florida | NDTF    
Cash and Cash Equivalents    
Estimated Fair Value 18 23
Equity Securities, FV-NI    
Gross Unrealized Holding Gains 115 111
Gross Unrealized Holding Losses 0 0
Estimated Fair Value 123 120
Debt Securities, Available-for-sale    
Estimated Fair Value 167 188
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]    
Gross Unrealized Holding Gains 116 111
Gross Unrealized Holding Losses 5 8
Estimated Fair Value 308 331
Duke Energy Florida | Other Investments    
Cash and Cash Equivalents    
Estimated Fair Value 2 3
Debt Securities, Available-for-sale    
Estimated Fair Value 23 24
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]    
Gross Unrealized Holding Gains 0 0
Gross Unrealized Holding Losses 1 0
Estimated Fair Value 25 27
Duke Energy Indiana    
Debt Securities, Available-for-sale    
Estimated Fair Value 26  
Duke Energy Indiana | Other Investments    
Cash and Cash Equivalents    
Estimated Fair Value 2 1
Equity Securities, FV-NI    
Gross Unrealized Holding Gains 1  
Gross Unrealized Holding Losses 0 4
Estimated Fair Value 47 89
Debt Securities, Available-for-sale    
Estimated Fair Value 26 56
Investments, Accumulated Gross Unrealized Gains (Losses) [Abstract]    
Gross Unrealized Holding Gains 1  
Gross Unrealized Holding Losses 1 5
Estimated Fair Value 75 146
Corporate debt securities | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 14 6
Gross Unrealized Holding Losses 24 33
Estimated Fair Value 822 673
Corporate debt securities | Other Investments    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 0 0
Gross Unrealized Holding Losses 3 5
Estimated Fair Value 77 79
Corporate debt securities | Duke Energy Carolinas | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 6 2
Gross Unrealized Holding Losses 21 27
Estimated Fair Value 501 401
Corporate debt securities | Progress Energy | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 8 4
Gross Unrealized Holding Losses 3 6
Estimated Fair Value 321 272
Corporate debt securities | Duke Energy Progress | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 7 4
Gross Unrealized Holding Losses 3 6
Estimated Fair Value 302 256
Corporate debt securities | Duke Energy Florida | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 1 0
Gross Unrealized Holding Losses 0 0
Estimated Fair Value 19 16
Corporate debt securities | Duke Energy Indiana | Other Investments    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 0  
Gross Unrealized Holding Losses 0 0
Estimated Fair Value 1 6
Municipal bonds | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 1 2
Gross Unrealized Holding Losses 20 14
Estimated Fair Value 355 342
Municipal bonds | Other Investments    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 0 0
Gross Unrealized Holding Losses 2 1
Estimated Fair Value 67 83
Municipal bonds | Duke Energy Carolinas | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 0 0
Gross Unrealized Holding Losses 6 4
Estimated Fair Value 38 36
Municipal bonds | Progress Energy | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 1 2
Gross Unrealized Holding Losses 14 10
Estimated Fair Value 317 306
Municipal bonds | Progress Energy | Other Investments    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 0 0
Gross Unrealized Holding Losses 1 0
Estimated Fair Value 23 24
Municipal bonds | Duke Energy Progress | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 1 2
Gross Unrealized Holding Losses 14 10
Estimated Fair Value 317 306
Municipal bonds | Duke Energy Florida | Other Investments    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 0 0
Gross Unrealized Holding Losses 1 0
Estimated Fair Value 23 24
Municipal bonds | Duke Energy Indiana | Other Investments    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 0  
Gross Unrealized Holding Losses 1 1
Estimated Fair Value 25 43
U.S. government bonds | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 17 3
Gross Unrealized Holding Losses 51 84
Estimated Fair Value 1,897 1,806
U.S. government bonds | Other Investments    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 0 0
Gross Unrealized Holding Losses 5 5
Estimated Fair Value 51 59
U.S. government bonds | Duke Energy Carolinas | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 9 0
Gross Unrealized Holding Losses 33 50
Estimated Fair Value 1,056 991
U.S. government bonds | Progress Energy | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 8 3
Gross Unrealized Holding Losses 18 34
Estimated Fair Value 841 815
U.S. government bonds | Duke Energy Progress | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 8 3
Gross Unrealized Holding Losses 13 26
Estimated Fair Value 694 645
U.S. government bonds | Duke Energy Florida | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 0 0
Gross Unrealized Holding Losses 5 8
Estimated Fair Value 147 170
U.S. government bonds | Duke Energy Indiana | Other Investments    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 0  
Gross Unrealized Holding Losses 0 0
Estimated Fair Value 0 7
Other debt securities | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 2 1
Gross Unrealized Holding Losses 6 8
Estimated Fair Value 253 239
Other debt securities | Other Investments    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 0 0
Gross Unrealized Holding Losses 3 4
Estimated Fair Value 43 45
Other debt securities | Duke Energy Carolinas | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 2 1
Gross Unrealized Holding Losses 6 8
Estimated Fair Value 241 223
Other debt securities | Progress Energy | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 0 0
Gross Unrealized Holding Losses 0 0
Estimated Fair Value 12 16
Other debt securities | Duke Energy Progress | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 0 0
Gross Unrealized Holding Losses 0 0
Estimated Fair Value 11 14
Other debt securities | Duke Energy Florida | NDTF    
Debt Securities, Available-for-sale    
Gross Unrealized Holding Gains 0 0
Gross Unrealized Holding Losses 0 0
Estimated Fair Value $ 1 $ 2
v3.25.2
Investments in Debt and Equity Securities (Realized Gains and Losses) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
FV-NI:        
Realized gains $ 41 $ 127 $ 167 $ 195
Realized losses 40 27 81 45
AFS:        
Realized gains 10 2 20 12
Realized losses 17 22 37 36
Duke Energy Carolinas        
FV-NI:        
Realized gains 22 72 104 125
Realized losses 19 15 41 21
AFS:        
Realized gains 8 1 15 5
Realized losses 9 11 23 17
Progress Energy        
FV-NI:        
Realized gains 19 55 63 70
Realized losses 21 12 40 24
AFS:        
Realized gains 2 1 5 7
Realized losses 8 11 14 19
Duke Energy Progress        
FV-NI:        
Realized gains 17 55 61 70
Realized losses 21 12 40 24
AFS:        
Realized gains 2 1 5 7
Realized losses $ 7 $ 10 $ 13 $ 18
v3.25.2
Investments in Debt and Equity Securities (Maturities) (Details)
$ in Millions
Jun. 30, 2025
USD ($)
Debt Securities, Available-for-sale [Line Items]  
Due in one year or less $ 87
Due after one through five years 896
Due after five through 10 years 695
Due after 10 years 1,887
Total 3,565
Duke Energy Carolinas  
Debt Securities, Available-for-sale [Line Items]  
Due in one year or less 5
Due after one through five years 397
Due after five through 10 years 360
Due after 10 years 1,074
Total 1,836
Progress Energy  
Debt Securities, Available-for-sale [Line Items]  
Due in one year or less 79
Due after one through five years 438
Due after five through 10 years 285
Due after 10 years 712
Total 1,514
Duke Energy Progress  
Debt Securities, Available-for-sale [Line Items]  
Due in one year or less 17
Due after one through five years 375
Due after five through 10 years 268
Due after 10 years 664
Total 1,324
Duke Energy Florida  
Debt Securities, Available-for-sale [Line Items]  
Due in one year or less 62
Due after one through five years 63
Due after five through 10 years 17
Due after 10 years 48
Total 190
Duke Energy Indiana  
Debt Securities, Available-for-sale [Line Items]  
Due in one year or less 1
Due after one through five years 8
Due after five through 10 years 6
Due after 10 years 11
Total $ 26
v3.25.2
Fair Value Measurements (Fair Value Measurement Amounts for Assets and Liabilities) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities $ 3,565  
Derivative assets 539 $ 434
Total assets 13,149 12,339
Derivative liabilities (256) (319)
Net assets (liabilities) 12,893 12,020
NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 145 139
Equity securities 8,637 8,233
Debt securities 3,327 3,060
NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 8,637 8,233
Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 138 47
Equity securities 125 160
Debt securities 238 266
Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 8 2
Total assets 10,127 9,625
Derivative liabilities (2) (3)
Net assets (liabilities) 10,125 9,622
Level 1 | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 145 139
Debt securities 1,051 1,022
Level 1 | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 8,609 8,203
Level 1 | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 138 47
Equity securities 125 160
Debt securities 51 52
Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 517 423
Total assets 2,983 2,677
Derivative liabilities (254) (316)
Net assets (liabilities) 2,729 2,361
Level 2 | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Debt securities 2,276 2,038
Level 2 | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 3 2
Level 2 | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Equity securities 0 0
Debt securities 187 214
Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 14 9
Total assets 14 9
Derivative liabilities 0 0
Net assets (liabilities) 14 9
Level 3 | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Debt securities 0 0
Level 3 | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 0 0
Level 3 | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Equity securities 0 0
Debt securities 0 0
Not Categorized    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 0 0
Total assets 25 28
Derivative liabilities 0 0
Net assets (liabilities) 25 28
Not Categorized | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Debt securities 0 0
Not Categorized | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 25 28
Not Categorized | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Equity securities 0 0
Debt securities 0 0
Duke Energy Carolinas    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 1,836  
Derivative assets 110 94
Total assets 6,989 6,558
Derivative liabilities (60) (88)
Net assets (liabilities) 6,929 6,470
Duke Energy Carolinas | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 60 62
Equity securities 4,983 4,751
Debt securities 1,836 1,651
Duke Energy Carolinas | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 4,983 4,751
Duke Energy Carolinas | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 0 0
Total assets 5,532 5,303
Derivative liabilities 0 0
Net assets (liabilities) 5,532 5,303
Duke Energy Carolinas | Level 1 | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 60 62
Debt securities 517 520
Duke Energy Carolinas | Level 1 | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 4,955 4,721
Duke Energy Carolinas | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 110 94
Total assets 1,432 1,227
Derivative liabilities (60) (88)
Net assets (liabilities) 1,372 1,139
Duke Energy Carolinas | Level 2 | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Debt securities 1,319 1,131
Duke Energy Carolinas | Level 2 | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 3 2
Duke Energy Carolinas | Not Categorized    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 0 0
Total assets 25 28
Derivative liabilities 0 0
Net assets (liabilities) 25 28
Duke Energy Carolinas | Not Categorized | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Debt securities 0 0
Duke Energy Carolinas | Not Categorized | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 25 28
Progress Energy    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 1,514  
Derivative assets 102 127
Total assets 5,371 5,142
Derivative liabilities (41) (58)
Net assets (liabilities) 5,330 5,084
Progress Energy | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 85 77
Equity securities 3,654 3,482
Debt securities 1,491 1,409
Progress Energy | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 3,654 3,482
Progress Energy | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 16 23
Debt securities 23 24
Progress Energy | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 0 0
Total assets 4,289 4,084
Derivative liabilities 0 0
Net assets (liabilities) 4,289 4,084
Progress Energy | Level 1 | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 85 77
Debt securities 534 502
Progress Energy | Level 1 | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 3,654 3,482
Progress Energy | Level 1 | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 16 23
Debt securities 0 0
Progress Energy | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 102 127
Total assets 1,082 1,058
Derivative liabilities (41) (58)
Net assets (liabilities) 1,041 1,000
Progress Energy | Level 2 | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Debt securities 957 907
Progress Energy | Level 2 | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 0 0
Progress Energy | Level 2 | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Debt securities 23 24
Duke Energy Progress    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 1,324  
Derivative assets 91 109
Total assets 5,024 4,762
Derivative liabilities (25) (57)
Net assets (liabilities) 4,999 4,705
Duke Energy Progress | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 67 54
Equity securities 3,531 3,362
Debt securities 1,324 1,221
Duke Energy Progress | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 3,531 3,362
Duke Energy Progress | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 11 16
Duke Energy Progress | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 0 0
Total assets 4,022 3,797
Derivative liabilities 0 0
Net assets (liabilities) 4,022 3,797
Duke Energy Progress | Level 1 | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 67 54
Debt securities 413 365
Duke Energy Progress | Level 1 | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 3,531 3,362
Duke Energy Progress | Level 1 | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 11 16
Duke Energy Progress | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 91 109
Total assets 1,002 965
Derivative liabilities (25) (57)
Net assets (liabilities) 977 908
Duke Energy Progress | Level 2 | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Debt securities 911 856
Duke Energy Progress | Level 2 | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 0 0
Duke Energy Progress | Level 2 | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Duke Energy Florida    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 190  
Derivative assets 10 18
Total assets 343 376
Derivative liabilities (16) (1)
Net assets (liabilities) 327 375
Duke Energy Florida | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 18 23
Equity securities 123 120
Debt securities 167 188
Duke Energy Florida | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 123 120
Duke Energy Florida | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 2 3
Debt securities 23 24
Duke Energy Florida | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 0 0
Total assets 264 283
Derivative liabilities 0 0
Net assets (liabilities) 264 283
Duke Energy Florida | Level 1 | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 18 23
Debt securities 121 137
Duke Energy Florida | Level 1 | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 123 120
Duke Energy Florida | Level 1 | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 2 3
Debt securities 0 0
Duke Energy Florida | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 10 18
Total assets 79 93
Derivative liabilities (16) (1)
Net assets (liabilities) 63 92
Duke Energy Florida | Level 2 | NDTF    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Debt securities 46 51
Duke Energy Florida | Level 2 | NDTF equity securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Equity securities 0 0
Duke Energy Florida | Level 2 | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Debt securities 23 24
Duke Energy Indiana    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt securities 26  
Derivative assets 21 44
Total assets 96 190
Derivative liabilities (7) (3)
Net assets (liabilities) 89 187
Duke Energy Indiana | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 2 1
Equity securities 47 89
Debt securities 26 56
Duke Energy Indiana | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 8 0
Total assets 57 90
Derivative liabilities (2) (3)
Net assets (liabilities) 55 87
Duke Energy Indiana | Level 1 | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 2 1
Equity securities 47 89
Debt securities 0 0
Duke Energy Indiana | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 0 36
Total assets 26 92
Derivative liabilities (5) 0
Net assets (liabilities) 21 92
Duke Energy Indiana | Level 2 | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Equity securities 0 0
Debt securities 26 56
Duke Energy Indiana | Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 13 8
Total assets 13 8
Derivative liabilities 0 0
Net assets (liabilities) 13 8
Duke Energy Indiana | Level 3 | Other Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 0 0
Equity securities 0 0
Debt securities 0 0
Piedmont    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 0 1
Derivative liabilities (115) (94)
Net assets (liabilities) (115) (93)
Piedmont | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets   1
Derivative liabilities   0
Net assets (liabilities)   1
Piedmont | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative assets 0 0
Derivative liabilities (115) (94)
Net assets (liabilities) $ (115) $ (94)
v3.25.2
Fair Value Measurements (Reconciliation of Assets and Liabilities Measured At Fair Value On A Recurring Basis Using Unobservable Inputs) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Derivatives (net)        
Balance at beginning of period $ 3 $ 6 $ 9 $ 15
Purchases, sales, issuances and settlements:        
Purchases 14 29 14 29
Settlements 8 (10) 2 (23)
Total (losses) gains included on the Condensed Consolidated Balance Sheet (11) 10 (11) 14
Balance at end of period 14 35 14 35
Duke Energy Indiana        
Derivatives (net)        
Balance at beginning of period 2 5 8 13
Purchases, sales, issuances and settlements:        
Purchases 12 27 12 27
Settlements 9 (9) 3 (20)
Total (losses) gains included on the Condensed Consolidated Balance Sheet (10) 10 (10) 13
Balance at end of period $ 13 $ 33 $ 13 $ 33
v3.25.2
Fair Value Measurements (Quantitative Level 3 Fair Value Disclosures) (Details)
$ in Millions
Jun. 30, 2025
USD ($)
$ / MWh
Mar. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
$ / MWh
Jun. 30, 2024
USD ($)
Mar. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Fair Value Measurement Inputs and Valuation Techniques            
Net derivative asset (liability) | $ $ 14 $ 3 $ 9 $ 35 $ 6 $ 15
Duke Energy Ohio | FTRs | RTO auction pricing            
Fair Value Measurement Inputs and Valuation Techniques            
Net derivative asset (liability) | $ $ 1   $ 1      
Duke Energy Ohio | FTRs | RTO auction pricing | Minimum            
Fair Value Measurement Inputs and Valuation Techniques            
Input measurements (in usd per MWh and usd per MMBtu) 0   0      
Duke Energy Ohio | FTRs | RTO auction pricing | Maximum            
Fair Value Measurement Inputs and Valuation Techniques            
Input measurements (in usd per MWh and usd per MMBtu) 0.78   1.13      
Duke Energy Ohio | FTRs | RTO auction pricing | Weighted Average            
Fair Value Measurement Inputs and Valuation Techniques            
Input measurements (in usd per MWh and usd per MMBtu) 0.20   0.48      
Duke Energy Indiana            
Fair Value Measurement Inputs and Valuation Techniques            
Net derivative asset (liability) | $ $ 13 $ 2 $ 8 $ 33 $ 5 $ 13
Duke Energy Indiana | FTRs | RTO auction pricing            
Fair Value Measurement Inputs and Valuation Techniques            
Net derivative asset (liability) | $ $ 13   $ 8      
Duke Energy Indiana | FTRs | RTO auction pricing | Minimum            
Fair Value Measurement Inputs and Valuation Techniques            
Input measurements (in usd per MWh and usd per MMBtu) (2.09)   (0.63)      
Duke Energy Indiana | FTRs | RTO auction pricing | Maximum            
Fair Value Measurement Inputs and Valuation Techniques            
Input measurements (in usd per MWh and usd per MMBtu) 17.87   9.24      
Duke Energy Indiana | FTRs | RTO auction pricing | Weighted Average            
Fair Value Measurement Inputs and Valuation Techniques            
Input measurements (in usd per MWh and usd per MMBtu) 0.95   0.94      
v3.25.2
Fair Value Measurements (Other Fair Value Disclosure) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Book Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt $ 83,960 $ 80,689
Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 77,104 73,440
Piedmont Natural Gas and Progress Energy    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Unamortized debt discount (premium), net 1,000 1,000
Duke Energy Carolinas | Book Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 18,345 17,490
Duke Energy Carolinas | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 16,916 15,975
Progress Energy | Book Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 26,880 24,496
Progress Energy | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 24,999 22,548
Duke Energy Progress | Book Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 14,215 12,504
Duke Energy Progress | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 12,757 11,009
Duke Energy Florida | Book Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 11,020 10,348
Duke Energy Florida | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 10,449 9,752
Duke Energy Ohio | Book Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 4,364 4,165
Duke Energy Ohio | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 4,095 3,871
Duke Energy Indiana | Book Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 5,095 4,798
Duke Energy Indiana | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 4,655 4,329
Piedmont | Book Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 4,004 4,003
Piedmont | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt $ 3,670 $ 3,584
v3.25.2
Variable Interest Entities (Narrative) (Details) - VIE primary beneficiary - USD ($)
 1 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2025
Jan. 31, 2025
Apr. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Dec. 31, 2024
Feb. 28, 2025
Feb. 29, 2024
Variable Interest Entities [Line Items]                
Variable interest entity, financial or other support, amount         $ 0 $ 0    
Duke Energy Florida | DEPR accounts receivable securitization facility due April 2025 | Secured Debt                
Variable Interest Entities [Line Items]                
Repayments of debt     $ 325,000,000          
Duke Energy Carolinas | DEPR accounts receivable securitization facility due April 2025 | Secured Debt                
Variable Interest Entities [Line Items]                
Repayments of debt   $ 500,000,000            
Duke Energy Progress | DEPR accounts receivable securitization facility due April 2025 | Secured Debt                
Variable Interest Entities [Line Items]                
Repayments of debt $ 400,000,000              
DEFR | Duke Energy Florida                
Variable Interest Entities [Line Items]                
Accounts receivable from securitization       $ 459,000,000        
DEFR | Duke Energy Carolinas                
Variable Interest Entities [Line Items]                
Accounts receivable from securitization           $ 1,081,000,000    
DEPR | Duke Energy (Parent)                
Variable Interest Entities [Line Items]                
Accounts receivable from securitization             $ 943,000,000  
Cinergy Receivables                
Variable Interest Entities [Line Items]                
Repayments of debt       $ 350,000,000        
Accounts receivable from securitization               $ 682,000,000
Cinergy Receivables | Duke Energy Indiana                
Variable Interest Entities [Line Items]                
Accounts receivable from securitization               316,000,000
Cinergy Receivables | Duke Energy Ohio                
Variable Interest Entities [Line Items]                
Accounts receivable from securitization               $ 366,000,000
DEPSCSF | Duke Energy Progress                
Variable Interest Entities [Line Items]                
Proceeds from issuance of senior secured bonds     $ 177,000,000          
v3.25.2
Variable Interest Entities (Schedule of Accounts Receivable Securitizations) (Details) - USD ($)
$ in Millions
 1 Months Ended
Mar. 31, 2025
Jan. 31, 2025
Jun. 30, 2025
Dec. 31, 2024
Variable Interest Entities [Line Items]        
Long-Term Debt     $ 78,914 $ 76,340
Duke Energy Carolinas        
Variable Interest Entities [Line Items]        
Long-Term Debt     18,022 16,669
Duke Energy Carolinas | VIE primary beneficiary | DERF        
Variable Interest Entities [Line Items]        
Long-Term Debt     0 500
Accounts receivable from securitization     0 1,054
Duke Energy Carolinas | VIE primary beneficiary | DERF | Secured Debt        
Variable Interest Entities [Line Items]        
Repayments of debt   $ 500    
Duke Energy Progress        
Variable Interest Entities [Line Items]        
Long-Term Debt     13,483 11,371
Duke Energy Progress | VIE primary beneficiary | DEPR        
Variable Interest Entities [Line Items]        
Long-Term Debt     0 400
Accounts receivable from securitization     $ 0 $ 835
Duke Energy Progress | VIE primary beneficiary | DEPR | Secured Debt        
Variable Interest Entities [Line Items]        
Repayments of debt $ 400      
v3.25.2
Variable Interest Entities (Schedule of Consolidated VIEs) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Variable Interest Entities [Line Items]    
Regulatory Assets: Current $ 2,269 $ 2,756
Current Assets: Other 1,001 695
Other Noncurrent Assets: Regulatory assets 14,172 14,254
Other Noncurrent Assets: Other 3,792 3,509
Current Liabilities: Other 1,887 2,084
Current maturities of long-term debt 5,046 4,349
Long-Term Debt 78,914 76,340
Inventory 4,434 4,509
Accounts payable 4,373 5,479
Duke Energy Carolinas    
Variable Interest Entities [Line Items]    
Regulatory Assets: Current 656 685
Current Assets: Other 354 52
Other Noncurrent Assets: Regulatory assets 3,985 4,199
Other Noncurrent Assets: Other 1,198 1,127
Current Liabilities: Other 477 541
Current maturities of long-term debt 23 521
Long-Term Debt 18,022 16,669
Inventory 1,524 1,536
Accounts payable 1,347 1,809
Duke Energy Progress    
Variable Interest Entities [Line Items]    
Regulatory Assets: Current 614 626
Current Assets: Other 159 104
Other Noncurrent Assets: Regulatory assets 4,654 4,555
Other Noncurrent Assets: Other 770 724
Current Liabilities: Other 310 427
Current maturities of long-term debt 582 983
Long-Term Debt 13,483 11,371
Inventory 1,323 1,341
Accounts payable 581 749
Duke Energy Florida    
Variable Interest Entities [Line Items]    
Regulatory Assets: Current 562 1,022
Current Assets: Other 85 227
Other Noncurrent Assets: Regulatory assets 2,105 2,064
Other Noncurrent Assets: Other 491 465
Current Liabilities: Other 352 342
Current maturities of long-term debt 1,235 534
Long-Term Debt 9,785 9,814
Inventory 767 745
Accounts payable 977 1,418
DEFPF | Duke Energy Florida | VIE primary beneficiary    
Variable Interest Entities [Line Items]    
Regulatory Assets: Current 61 61
Current Assets: Other 28 35
Other Noncurrent Assets: Regulatory assets 715 741
Other Noncurrent Assets: Other 7 0
Current Liabilities: Other 8 8
Current maturities of long-term debt 60 59
Long-Term Debt 741 773
DECNCSF | Duke Energy Carolinas | VIE primary beneficiary    
Variable Interest Entities [Line Items]    
Regulatory Assets: Current 12 12
Current Assets: Other 9 9
Other Noncurrent Assets: Regulatory assets 184 189
Other Noncurrent Assets: Other 1 1
Current Liabilities: Other 2 2
Current maturities of long-term debt 10 10
Long-Term Debt 193 198
DEPNCSF | Duke Energy Progress | VIE primary beneficiary    
Variable Interest Entities [Line Items]    
Regulatory Assets: Current 39 39
Current Assets: Other 29 27
Other Noncurrent Assets: Regulatory assets 600 620
Other Noncurrent Assets: Other 4 4
Current Liabilities: Other 8 10
Current maturities of long-term debt 35 34
Long-Term Debt 629 646
DEPSCSF | Duke Energy Progress | VIE primary beneficiary    
Variable Interest Entities [Line Items]    
Regulatory Assets: Current 8 8
Current Assets: Other 8 13
Other Noncurrent Assets: Regulatory assets 152 155
Other Noncurrent Assets: Other 1 1
Current Liabilities: Other 3 7
Current maturities of long-term debt 5 9
Long-Term Debt 160 163
DEF ProCo | Duke Energy Florida | VIE primary beneficiary    
Variable Interest Entities [Line Items]    
Inventory 548 494
Accounts payable $ 241 $ 208
v3.25.2
Variable Interest Entities (Sales and Cash Flows) (Details) - VIE not primary beneficiary - Cinergy Receivables
$ in Millions
 6 Months Ended
Jun. 30, 2024
USD ($)
Duke Energy Ohio  
Sales  
Receivables sold $ 474
Loss recognized on sale 7
Cash flows  
Cash proceeds from receivables sold 478
Return received on retained interests 4
Duke Energy Indiana  
Sales  
Receivables sold 473
Loss recognized on sale 6
Cash flows  
Cash proceeds from receivables sold 523
Return received on retained interests $ 4
v3.25.2
Revenue (Remaining Performance Obligations) (Details)
$ in Millions
Jun. 30, 2025
USD ($)
Duke Energy Carolinas  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 42
Duke Energy Carolinas | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-07-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 6 months
Revenue, remaining performance obligation, amount $ 6
Duke Energy Carolinas | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 12
Duke Energy Carolinas | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 12
Duke Energy Carolinas | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 12
Duke Energy Carolinas | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 0
Duke Energy Carolinas | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period
Revenue, remaining performance obligation, amount $ 0
Progress Energy  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 141
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-07-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 6 months
Revenue, remaining performance obligation, amount $ 17
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 43
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 13
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 13
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 13
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period
Revenue, remaining performance obligation, amount $ 42
Duke Energy Progress  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 47
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-07-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 6 months
Revenue, remaining performance obligation, amount $ 3
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 6
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 6
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 6
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 6
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period
Revenue, remaining performance obligation, amount $ 20
Duke Energy Florida  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 94
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-07-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 6 months
Revenue, remaining performance obligation, amount $ 14
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 37
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 7
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 7
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 7
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period
Revenue, remaining performance obligation, amount $ 22
Duke Energy Indiana  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 46
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-07-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 6 months
Revenue, remaining performance obligation, amount $ 8
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 17
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 15
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 6
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 0
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period
Revenue, remaining performance obligation, amount $ 0
Piedmont  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 373
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-07-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 6 months
Revenue, remaining performance obligation, amount $ 32
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 51
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 49
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 46
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, remaining performance obligation, amount $ 44
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, expected timing of satisfaction, period
Revenue, remaining performance obligation, amount $ 151
v3.25.2
Revenue (Disaggregation of Revenue) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers $ 7,373 $ 7,151 $ 15,591 $ 14,683
Revenue from sources other than contracts with customers 135 21 166 160
Total operating revenues 7,508 7,172 15,757 14,843
Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 7 11 15 18
Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 6,930 6,791 13,983 13,469
Total operating revenues 7,030 6,802 14,155 13,587
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 3,242 3,092 6,645 6,207
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 2,053 2,013 3,974 3,947
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 850 869 1,673 1,691
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 523 524 1,193 1,078
Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 262 293 498 546
Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 436 349 1,593 1,196
Total operating revenues 471 359 1,587 1,238
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 189 182 895 702
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 136 103 458 343
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 41 32 96 79
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Gas Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 70 32 144 72
Duke Energy Carolinas        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 2,195 2,314 4,686 4,666
Revenue from sources other than contracts with customers 36 (17) 69 38
Total operating revenues 2,231 2,297 4,755 4,704
Duke Energy Carolinas | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Carolinas | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 2,195 2,314 4,686 4,666
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 919 959 2,046 2,017
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 693 755 1,394 1,472
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 355 374 689 714
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 132 127 281 265
Duke Energy Carolinas | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 96 99 276 198
Duke Energy Carolinas | Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Carolinas | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Carolinas | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Carolinas | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Carolinas | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Carolinas | Gas Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Progress Energy        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 3,532 3,349 6,940 6,502
Revenue from sources other than contracts with customers 37 8 96 83
Total operating revenues 3,569 3,357 7,036 6,585
Progress Energy | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Progress Energy | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 3,532 3,349 6,940 6,502
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,753 1,625 3,366 3,142
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 966 933 1,809 1,799
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 264 267 528 533
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 328 337 770 692
Progress Energy | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 221 187 467 336
Progress Energy | Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Progress Energy | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Progress Energy | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Progress Energy | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Progress Energy | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Progress Energy | Gas Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Progress        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,673 1,660 3,668 3,405
Revenue from sources other than contracts with customers 8 (24) 31 19
Total operating revenues 1,681 1,636 3,699 3,424
Duke Energy Progress | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Progress | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,673 1,660 3,668 3,405
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 663 661 1,483 1,403
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 426 427 841 849
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 179 183 372 360
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 294 298 698 624
Duke Energy Progress | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 111 91 274 169
Duke Energy Progress | Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Progress | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Progress | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Progress | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Progress | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Progress | Gas Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Florida        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,859 1,689 3,272 3,097
Revenue from sources other than contracts with customers 26 27 57 55
Total operating revenues 1,885 1,716 3,329 3,152
Duke Energy Florida | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Florida | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,859 1,689 3,272 3,097
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,089 964 1,883 1,739
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 538 506 968 950
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 82 84 156 173
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 33 39 72 68
Duke Energy Florida | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 117 96 193 167
Duke Energy Florida | Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Florida | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Florida | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Florida | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Florida | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Florida | Gas Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Ohio        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 627 583 1,402 1,276
Revenue from sources other than contracts with customers 27 25 18 10
Total operating revenues 654 608 1,420 1,286
Duke Energy Ohio | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Ohio | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 473 451 970 924
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 253 240 535 493
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 147 144 289 296
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 36 39 69 71
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 19 10 41 24
Duke Energy Ohio | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 18 18 36 40
Duke Energy Ohio | Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 154 132 432 352
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 100 86 286 233
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 37 31 107 88
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 9 6 25 17
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Ohio | Gas Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 8 9 14 14
Duke Energy Indiana        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 810 727 1,665 1,480
Revenue from sources other than contracts with customers 11 20 14 26
Total operating revenues 821 747 1,679 1,506
Duke Energy Indiana | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Indiana | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 810 727 1,665 1,480
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 316 269 695 556
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 245 180 478 381
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 196 190 383 373
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 44 49 101 97
Duke Energy Indiana | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 9 39 8 73
Duke Energy Indiana | Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Indiana | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Indiana | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Indiana | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Indiana | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Indiana | Gas Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Piedmont        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 290 223 1,178 860
Revenue from sources other than contracts with customers 45 21 14 60
Total operating revenues 335 244 1,192 920
Piedmont | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Piedmont | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Piedmont | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Piedmont | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Piedmont | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Piedmont | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Piedmont | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Piedmont | Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 290 223 1,178 860
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 89 96 609 469
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 99 72 351 255
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 32 24 71 62
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 23 8 47 16
Piedmont | Gas Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers $ 47 $ 23 $ 100 $ 58
v3.25.2
Revenue (Reserve for Credit Losses for Trade and Other Receivables) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance $ 204 $ 204 $ 209 $ 205
Write-Offs (46) (36) (75) (68)
Credit Loss Expense 32 35 46 45
Other Adjustments 9 4 19 25
Ending balance 199 207 199 207
Duke Energy Carolinas        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 64 62 69 56
Write-Offs (12) (16) (26) (28)
Credit Loss Expense 5 10 10 17
Other Adjustments 0 9 4 20
Ending balance 57 65 57 65
Progress Energy        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 67 73 73 74
Write-Offs (14) (17) (29) (33)
Credit Loss Expense 10 11 18 20
Other Adjustments 7 6 8 12
Ending balance 70 73 70 73
Duke Energy Progress        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 42 47 44 44
Write-Offs (10) (12) (18) (19)
Credit Loss Expense 3 6 8 10
Other Adjustments 7 6 8 12
Ending balance 42 47 42 47
Duke Energy Florida        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 25 27 29 31
Write-Offs (4) (5) (11) (14)
Credit Loss Expense 7 5 10 10
Other Adjustments 0 (1) 0 (1)
Ending balance 28 26 28 26
Duke Energy Ohio        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 46 41 43 9
Write-Offs (8) 0 (8) 0
Credit Loss Expense 0 1 1 2
Other Adjustments 3 0 5 31
Ending balance 41 42 41 42
Duke Energy Indiana        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 17 16 15 5
Write-Offs (4) 0 (4) 0
Credit Loss Expense 6 0 6 2
Other Adjustments (2) 0 0 9
Ending balance 17 16 17 16
Piedmont        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance 10 12 10 11
Write-Offs (8) (3) (8) (4)
Credit Loss Expense 11 2 11 4
Other Adjustments 1 0 1 0
Ending balance $ 14 $ 11 $ 14 $ 11
v3.25.2
Stockholders' Equity (Earnings Per Share Data) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Class of Stock [Line Items]        
Net Income Available to Duke Energy Corporation Common Stockholders $ 971 $ 886 $ 2,336 $ 1,985
Loss From Discontinued Operations, net of tax (1) (10) (1) (13)
Accumulated preferred stock dividends adjustment 0 (12) 0 0
Less: Impact of participating securities 1 1 3 2
Income from continuing operations available to Duke Energy common stockholders 971 883 2,334 1,996
Loss from discontinued operations, net of tax (1) (10) (1) (13)
Add: Net (income) loss attributable to noncontrolling interest included in discontinued operations $ 0 $ 0 $ 0 $ 0
Weighted average common shares outstanding – basic (in shares) 777 772 777 771
Weighted average common shares outstanding – diluted (in shares) 777 772 777 771
EPS from continuing operations available to Duke Energy common stockholders        
Basic (in usd per share) $ 1.25 $ 1.14 $ 3.00 $ 2.59
Diluted (in usd per share) 1.25 1.14 3.00 2.59
Loss Per Share from discontinued operations attributable to Duke Energy common stockholders        
Basic (usd per share) 0 (0.01) 0 (0.02)
Diluted (usd per share) $ 0 $ (0.01) $ 0 $ (0.02)
EPS from continuing operations available to Duke Energy common stockholders        
Potentially dilutive items excluded from the calculation (in shares) 2 2 2 2
Dividends declared per common share (in usd per share) $ 1.045 $ 1.025 $ 2.090 $ 2.050
Preferred stock, Series A        
EPS from continuing operations available to Duke Energy common stockholders        
Dividends declared on preferred stock per depositary share (in usd per share) 0.359 0.359 $ 0.719 0.719
Cumulative dividend rate per annum     5.75%  
Liquidation preference per share (in usd per share) 25   $ 25  
Preferred stock, Series B        
EPS from continuing operations available to Duke Energy common stockholders        
Dividends declared on preferred stock per depositary share (in usd per share) $ 0 $ 0 $ 0 $ 24.375
Cumulative dividend rate per annum     4.875%  
v3.25.2
Stockholders' Equity - Narrative (Details)
$ in Billions
 1 Months Ended
Nov. 30, 2022
USD ($)
Equity [Abstract]  
Maximum value of shares to be issued under ATM program $ 1.5
v3.25.2
Stockholders' Equity - Equity Issuances Pursuant to Forward Contracts (Details) - If net share settlement was elected
 6 Months Ended
Jun. 30, 2025
$ / shares
shares
Forward Contract Indexed to Issuer's Equity [Line Items]  
Shares Priced (shares) 4,238,007
Equity Forwards, First Tranche  
Forward Contract Indexed to Issuer's Equity [Line Items]  
Shares Priced (shares) 1,710,979
Initial Forward Price (in usd per share) | $ / shares $ 116.02
Equity Forwards, Second Tranche  
Forward Contract Indexed to Issuer's Equity [Line Items]  
Shares Priced (shares) 1,262,618
Initial Forward Price (in usd per share) | $ / shares $ 117.94
Equity Forwards, Third Tranche  
Forward Contract Indexed to Issuer's Equity [Line Items]  
Shares Priced (shares) 1,264,410
Initial Forward Price (in usd per share) | $ / shares $ 117.79
v3.25.2
Employee Benefit Plans (Details) - Qualified Pension Plans - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost $ 27 $ 29 $ 54 $ 57
Interest cost on projected benefit obligation 82 83 164 165
Expected return on plan assets (149) (154) (298) (308)
Amortization of actuarial loss 15 8 30 16
Amortization of prior service credit (3) (4) (6) (7)
Amortization of settlement charges 7 4 13 9
Net periodic pension costs (21) (34) (43) (68)
Duke Energy Carolinas        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost 9 10 18 19
Interest cost on projected benefit obligation 20 20 39 40
Expected return on plan assets (38) (40) (76) (81)
Amortization of actuarial loss 3 2 7 4
Amortization of prior service credit 0 0 0 0
Amortization of settlement charges 3 2 6 4
Net periodic pension costs (3) (6) (6) (14)
Progress Energy        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost 8 8 15 16
Interest cost on projected benefit obligation 26 26 52 52
Expected return on plan assets (55) (54) (110) (108)
Amortization of actuarial loss 4 3 9 5
Amortization of prior service credit 0 0 0 0
Amortization of settlement charges 2 1 4 2
Net periodic pension costs (15) (16) (30) (33)
Duke Energy Progress        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost 4 5 9 10
Interest cost on projected benefit obligation 12 12 23 24
Expected return on plan assets (25) (25) (49) (50)
Amortization of actuarial loss 2 2 4 3
Amortization of prior service credit 0 0 0 0
Amortization of settlement charges 2 1 3 2
Net periodic pension costs (5) (5) (10) (11)
Duke Energy Florida        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost 3 4 6 7
Interest cost on projected benefit obligation 15 14 29 28
Expected return on plan assets (30) (29) (60) (58)
Amortization of actuarial loss 2 1 4 2
Amortization of prior service credit 0 0 0 0
Amortization of settlement charges 0 1 1 1
Net periodic pension costs (10) (9) (20) (20)
Duke Energy Ohio        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost 1 0 1 1
Interest cost on projected benefit obligation 4 4 8 8
Expected return on plan assets (6) (7) (11) (13)
Amortization of actuarial loss 0 1 1 1
Amortization of prior service credit 0 0 0 0
Amortization of settlement charges 0 0 0 0
Net periodic pension costs (1) (2) (1) (3)
Duke Energy Indiana        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost 2 1 3 3
Interest cost on projected benefit obligation 6 7 13 13
Expected return on plan assets (10) (11) (20) (21)
Amortization of actuarial loss 1 1 2 2
Amortization of prior service credit (1) (1) (1) (1)
Amortization of settlement charges 1 1 1 1
Net periodic pension costs (1) (2) (2) (3)
Piedmont        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost 1 1 2 2
Interest cost on projected benefit obligation 2 3 5 5
Expected return on plan assets (5) (5) (10) (10)
Amortization of actuarial loss 1 0 2 1
Amortization of prior service credit (1) (2) (3) (4)
Amortization of settlement charges 1 1 2 2
Net periodic pension costs $ (1) $ (2) $ (2) $ (4)
v3.25.2
Income Taxes (Narrative) (Details)
$ in Millions
 1 Months Ended
Apr. 30, 2025
USD ($)
Tax Credit Carryforward [Line Items]  
Tax credits $ 643
Duke Energy Carolinas | Sale of Nuclear Power PTCs  
Tax Credit Carryforward [Line Items]  
Decrease in deferred tax asset 478
Duke Energy Progress | Sale of Nuclear Power PTCs  
Tax Credit Carryforward [Line Items]  
Decrease in deferred tax asset 69
Duke Energy Florida | Sale of Nuclear Power PTCs  
Tax Credit Carryforward [Line Items]  
Decrease in deferred tax asset $ 58
v3.25.2
Income Taxes (Effective Tax Rates) (Details)
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Income Tax Disclosure [Line Items]        
Effective tax rate 10.60% 13.10% 11.50% 13.20%
Duke Energy Carolinas        
Income Tax Disclosure [Line Items]        
Effective tax rate 7.80% 10.90% 8.50% 11.20%
Progress Energy        
Income Tax Disclosure [Line Items]        
Effective tax rate 15.10% 16.60% 15.90% 16.60%
Duke Energy Progress        
Income Tax Disclosure [Line Items]        
Effective tax rate 12.40% 14.90% 13.60% 14.90%
Duke Energy Florida        
Income Tax Disclosure [Line Items]        
Effective tax rate 19.10% 19.50% 19.40% 19.50%
Duke Energy Ohio        
Income Tax Disclosure [Line Items]        
Effective tax rate 15.80% 17.20% 17.20% 17.00%
Duke Energy Indiana        
Income Tax Disclosure [Line Items]        
Effective tax rate 13.30% 16.70% 12.90% 16.90%
Piedmont        
Income Tax Disclosure [Line Items]        
Effective tax rate 44.40% 20.00% 19.50% 19.60%