T-MOBILE US, INC., 10-Q filed on 4/28/2026
Quarterly Report
v3.26.1
Cover Page - shares
 3 Months Ended
Mar. 31, 2026
Apr. 24, 2026
Entity Listings [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2026  
Document Transition Report false  
Entity File Number 1-33409  
Entity Registrant Name T-MOBILE US, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 20-0836269  
Entity Address, Address Line One 12920 SE 38th Street  
Entity Address, City or Town Bellevue  
Entity Address, State or Province WA  
Entity Address, Postal Zip Code 98006-1350  
City Area Code (425)  
Local Phone Number 378-4000  
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 (in shares)   1,082,204,717
Entity Central Index Key 0001283699  
Amendment Flag false  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Current Fiscal Year End Date --12-31  
Common Stock, par value $0.00001 per share    
Entity Listings [Line Items]    
Title of 12(b) Security Common Stock, par value $0.00001 per share  
Trading Symbol TMUS  
Security Exchange Name NASDAQ  
3.550% Senior Notes due 2029    
Entity Listings [Line Items]    
Title of 12(b) Security 3.550% Senior Notes due 2029  
Trading Symbol TMUS29  
Security Exchange Name NASDAQ  
3.700% Senior Notes due 2032    
Entity Listings [Line Items]    
Title of 12(b) Security 3.700% Senior Notes due 2032  
Trading Symbol TMUS32  
Security Exchange Name NASDAQ  
3.150% Senior Notes due 2032    
Entity Listings [Line Items]    
Title of 12(b) Security 3.150% Senior Notes due 2032  
Trading Symbol TMUS32A  
Security Exchange Name NASDAQ  
3.200% Senior Notes due 2032    
Entity Listings [Line Items]    
Title of 12(b) Security 3.200% Senior Notes due 2032  
Trading Symbol TMUS32B  
Security Exchange Name NASDAQ  
3.625% Senior Notes due 2035    
Entity Listings [Line Items]    
Title of 12(b) Security 3.625% Senior Notes due 2035  
Trading Symbol TMUS35  
Security Exchange Name NASDAQ  
3.850% Senior Notes due 2036    
Entity Listings [Line Items]    
Title of 12(b) Security 3.850% Senior Notes due 2036  
Trading Symbol TMUS36  
Security Exchange Name NASDAQ  
3.500% Senior Notes due 2037    
Entity Listings [Line Items]    
Title of 12(b) Security 3.500% Senior Notes due 2037  
Trading Symbol TMUS37  
Security Exchange Name NASDAQ  
3.900% Senior Notes due 2038    
Entity Listings [Line Items]    
Title of 12(b) Security 3.900% Senior Notes due 2038  
Trading Symbol TMUS38  
Security Exchange Name NASDAQ  
3.800% Senior Notes due 2045    
Entity Listings [Line Items]    
Title of 12(b) Security 3.800% Senior Notes due 2045  
Trading Symbol TMUS45  
Security Exchange Name NASDAQ  
6.250% Senior Notes due 2069    
Entity Listings [Line Items]    
Title of 12(b) Security 6.250% Senior Notes due 2069  
Trading Symbol TMUSL  
Security Exchange Name NASDAQ  
5.500% Senior Notes due March 2070    
Entity Listings [Line Items]    
Title of 12(b) Security 5.500% Senior Notes due March 2070  
Trading Symbol TMUSZ  
Security Exchange Name NASDAQ  
5.500% Senior Notes due June 2070    
Entity Listings [Line Items]    
Title of 12(b) Security 5.500% Senior Notes due June 2070  
Trading Symbol TMUSI  
Security Exchange Name NASDAQ  
v3.26.1
Condensed Consolidated Balance Sheets - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Current assets    
Cash and cash equivalents $ 3,520 $ 5,598
Accounts receivable, net of allowance for credit losses of $217 and $226 4,866 4,874
Equipment installment plan receivables, net of allowance for credit losses and imputed discount of $748 and $733 4,935 4,997
Inventory 2,327 2,405
Prepaid expenses 1,067 1,215
Other current assets 5,403 5,372
Total current assets 22,118 24,461
Property and equipment, net 37,262 38,333
Operating lease right-of-use assets 25,021 25,692
Financing lease right-of-use assets 2,766 2,760
Goodwill 13,664 13,678
Spectrum licenses 97,564 98,032
Other intangible assets, net 3,573 3,843
Equipment installment plan receivables due after one year, net of allowance for credit losses and imputed discount of $217 and $213 2,553 2,683
Other assets 10,146 9,755
Total assets 214,667 219,237
Current liabilities    
Accounts payable and accrued liabilities 9,522 10,280
Short-term debt 2,238 5,135
Deferred revenue 1,468 1,533
Short-term operating lease liabilities 3,639 3,814
Short-term financing lease liabilities 1,155 1,163
Other current liabilities 2,322 2,575
Total current liabilities 20,344 24,500
Tower obligations 3,496 3,532
Deferred tax liabilities 20,266 19,583
Operating lease liabilities 25,856 26,371
Financing lease liabilities 1,024 1,107
Other long-term liabilities 3,993 3,794
Total long-term liabilities 138,444 135,534
Commitments and contingencies (Note 13)
Stockholders' equity    
Common stock, par value $0.00001 per share, 2,000,000,000 shares authorized; 1,278,047,828 and 1,275,774,235 shares issued, 1,085,872,037 and 1,106,930,661 shares outstanding 0 0
Additional paid-in capital 69,670 69,460
Treasury stock, at cost, 192,175,791 and 168,843,574 shares (35,497) (30,545)
Accumulated other comprehensive loss (835) (848)
Retained earnings 22,541 21,136
Total stockholders' equity 55,879 59,203
Total liabilities and stockholders' equity 214,667 219,237
Nonrelated Party    
Current liabilities    
Long-term debt 83,809 79,649
Related Party    
Current liabilities    
Long-term debt $ 0 $ 1,498
v3.26.1
Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Statement of Financial Position [Abstract]    
Allowance for credit losses $ 217 $ 226
Allowance for credit losses and imputed discount current 748 733
Allowance for credit losses and imputed discount noncurrent $ 217 $ 213
Common stock, par value (in USD per share) $ 0.00001 $ 0.00001
Common stock, shares authorized (in shares) 2,000,000,000 2,000,000,000
Common stock, shares issued (in shares) 1,278,047,828 1,275,774,235
Common stock, shares outstanding (in shares) 1,085,872,037 1,106,930,661
Treasury stock, at cost (in shares) 192,175,791 168,843,574
v3.26.1
Condensed Consolidated Statements of Comprehensive Income - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Revenues    
Total revenues $ 23,107 $ 20,886
Operating expenses    
Selling, general and administrative 5,966 5,488
Depreciation and amortization 3,817 3,198
Total operating expenses 18,610 16,086
Operating income 4,497 4,800
Other expense, net    
Interest expense, net (1,031) (916)
Other expense, net (132) (46)
Total other expense, net (1,163) (962)
Income before income taxes 3,334 3,838
Income tax expense (830) (885)
Net income 2,504 2,953
Other comprehensive income (loss), net of tax    
Reclassification of loss from cash flow hedges, net of tax effect of $17 and $16 50 46
Losses on fair value hedges, net of tax effect of $(12) and $(61) (36) (177)
Amortization of actuarial gain, net of tax effect of $0 and $0 (1) (1)
Other comprehensive income (loss) 13 (132)
Total comprehensive income $ 2,517 $ 2,821
Earnings per share    
Basic (in USD per share) $ 2.28 $ 2.59
Diluted (in USD per share) $ 2.27 $ 2.58
Weighted-average shares outstanding    
Basic (in shares) 1,100,174,423 1,140,537,935
Diluted (in shares) 1,102,053,246 1,144,655,297
Service    
Revenues    
Total revenues $ 18,831 $ 16,925
Operating expenses    
Cost of services, exclusive of depreciation and amortization shown separately below 3,339 2,602
Postpaid revenues    
Revenues    
Total revenues 15,629 13,594
Prepaid revenues    
Revenues    
Total revenues 2,517 2,643
Wholesale and other service revenues    
Revenues    
Total revenues 685 688
Equipment revenues    
Revenues    
Total revenues 3,996 3,704
Operating expenses    
Cost of services, exclusive of depreciation and amortization shown separately below 5,488 4,798
Other revenues    
Revenues    
Total revenues $ 280 $ 257
v3.26.1
Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Income Statement [Abstract]    
Cash flow hedges, tax effect $ 17 $ 16
Fair value hedges, tax effect (12) (61)
Amortization of actuarial gain, net of tax effect $ 0 $ 0
v3.26.1
Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Operating activities    
Net income $ 2,504 $ 2,953
Adjustments to reconcile net income to net cash provided by operating activities    
Depreciation and amortization 3,817 3,198
Stock-based compensation expense 209 186
Deferred income tax expense 682 771
Bad debt expense 426 323
Losses from sales of receivables 20 22
Changes in operating assets and liabilities    
Accounts receivable (162) (93)
Equipment installment plan receivables (55) 24
Inventory 86 (318)
Operating lease right-of-use assets 1,196 855
Other current and long-term assets 33 10
Accounts payable and accrued liabilities (408) (268)
Short- and long-term operating lease liabilities (1,218) (898)
Other current and long-term liabilities (109) (88)
Other, net 201 170
Net cash provided by operating activities 7,222 6,847
Investing activities    
Purchases of property and equipment, including capitalized interest of $(7) and $(10) (2,623) (2,451)
Purchases of spectrum licenses and other intangible assets, including deposits (26) (73)
Proceeds from the sale of property, equipment and intangible assets 95 7
Acquisition of companies, net of cash acquired (1) (727)
Investments in unconsolidated affiliates, net 0 (75)
Other, net (294) (90)
Net cash used in investing activities (2,849) (3,409)
Financing activities    
Proceeds from issuance of long-term debt, net 6,398 7,774
Repayments of financing lease obligations (304) (315)
Repayments of long-term debt (6,435) (479)
Repurchases of common stock (4,826) (2,494)
Dividends on common stock (1,120) (1,003)
Tax withholdings on share-based awards (154) (272)
Other, net 1 (18)
Net cash (used in) provided by financing activities (6,440) 3,193
Change in cash and cash equivalents, including restricted cash (2,067) 6,631
Cash and cash equivalents, including restricted cash    
Beginning of period 5,976 5,713
End of period $ 3,909 $ 12,344
v3.26.1
Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Statement of Cash Flows [Abstract]    
Capitalized interest $ (7) $ (10)
v3.26.1
Condensed Consolidated Statement of Stockholders’ Equity - USD ($)
$ in Millions
Total
Common Stock Outstanding
Treasury Stock Outstanding
Par Value and Additional Paid-in Capital
Accumulated Other Comprehensive Loss
Retained Earnings
Beginning balance (in shares) at Dec. 31, 2024   1,144,579,681        
Beginning balance of treasury stock, (in shares) at Dec. 31, 2024     126,494,683      
Beginning balance at Dec. 31, 2024 $ 61,741   $ (20,584) $ 68,798 $ (857) $ 14,384
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 2,953         2,953
Dividends declared (995)         (995)
Other comprehensive income (132)       (132)  
Stock-based compensation 177     177    
Stock issued for employee stock purchase plan (in shares)   712,672        
Stock issued for employee stock purchase plan 125     125    
Issuance of vested restricted stock units (in shares)   3,105,719        
Shares withheld related to net share settlement of stock awards and stock options (in shares)   (1,008,606)        
Shares withheld related to net share settlement of stock awards and stock options (273)     (273)    
Repurchases of common stock (in shares)   (10,091,227) 10,091,227      
Repurchases of common stock (2,495)   $ (2,495)      
Other, net (in shares)   41,339 12,244      
Other, net 4   $ (6) 10    
Ending balance (in shares) at Mar. 31, 2025   1,137,339,578        
Ending balance of treasury stock, (in shares) at Mar. 31, 2025     136,598,154      
Ending balance at Mar. 31, 2025 $ 61,105   $ (23,085) 68,837 (989) 16,342
Beginning balance (in shares) at Dec. 31, 2025 1,106,930,661 1,106,930,661        
Beginning balance of treasury stock, (in shares) at Dec. 31, 2025 168,843,574   168,843,574      
Beginning balance at Dec. 31, 2025 $ 59,203   $ (30,545) 69,460 (848) 21,136
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 2,504         2,504
Dividends declared (1,099)         (1,099)
Other comprehensive income 13       13  
Stock-based compensation 226     226    
Stock issued for employee stock purchase plan (in shares)   754,705        
Stock issued for employee stock purchase plan 135     135    
Issuance of vested restricted stock units (in shares)   2,193,169        
Shares withheld related to net share settlement of stock awards and stock options (in shares)   (703,284)        
Shares withheld related to net share settlement of stock awards and stock options (154)     (154)    
Repurchases of common stock (in shares)   (23,329,925) 23,329,925      
Repurchases of common stock (4,950)   $ (4,950)      
Other, net (in shares)   26,711 2,292      
Other, net $ 1   $ (2) 3    
Ending balance (in shares) at Mar. 31, 2026 1,085,872,037 1,085,872,037        
Ending balance of treasury stock, (in shares) at Mar. 31, 2026 192,175,791   192,175,791      
Ending balance at Mar. 31, 2026 $ 55,879   $ (35,497) $ 69,670 $ (835) $ 22,541
v3.26.1
Condensed Consolidated Statement of Stockholders’ Equity (Parenthetical) - $ / shares
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Statement of Stockholders' Equity [Abstract]    
Common stock, dividends declared (in USD per share) $ 1.02 $ 0.88
v3.26.1
Summary of Significant Accounting Policies
 3 Months Ended
Mar. 31, 2026
Accounting Policies [Abstract]  
Summary of Significant Accounting Policies
Note 1 – Summary of Significant Accounting Policies

Basis of Presentation

The unaudited condensed consolidated financial statements of T-Mobile US, Inc. (“T-Mobile,” “we,” “our,” “us” or the “Company”) include all adjustments of a normal recurring nature necessary for the fair presentation of the results for the interim periods presented. The results for the interim periods are not necessarily indicative of those for the full year. The condensed consolidated financial statements should be read in conjunction with our consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2025.

The condensed consolidated financial statements include the balances and results of operations of T-Mobile and our consolidated subsidiaries. We consolidate majority-owned subsidiaries over which we exercise control, variable interest entities (“VIEs”) for which we are deemed to be the primary beneficiary and VIEs which cannot be deconsolidated, such as those related to our tower obligations as discussed in Note 8 - Tower Obligations. Intercompany transactions and balances have been eliminated in consolidation. Investments in entities that we do not control but have significant influence are accounted for under the equity method. We record our proportionate share of our equity method investees’ earnings (losses) within Other expense, net on our Condensed Consolidated Statements of Comprehensive Income.

The preparation of financial statements in conformity with United States (“U.S.”) generally accepted accounting principles (“GAAP”) requires our management to make estimates and assumptions that affect the financial statements and accompanying notes. Estimates are based on historical experience, where applicable, and other assumptions that management believes are reasonable under the circumstances. Estimates are inherently subject to judgment and actual results could differ from those estimates.

Accounting Pronouncements Adopted During the Current Year

Interim Reporting

In December 2025, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2025-11, “Interim Reporting (Topic 270): Narrow-Scope Improvements.” The standard improves the navigability of interim disclosures, clarifies when Topic 270 applies and provides additional interim disclosure guidance, including a principle to disclose material events since the most recent annual reporting period. The amendments do not change the underlying objectives of interim reporting but are designed to enhance clarity in application. We evaluated this standard and concluded our interim reporting disclosures are consistent with this standard. Accordingly, the adoption of this standard in the first quarter of 2026 did not have a material impact on our interim reporting disclosures.

Internal-Use Software Accounting and Disclosures

In September 2025, the FASB issued ASU 2025-06, “Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software.” The amendments remove all references to project stages in ASC 350-40, clarify the threshold entities apply to begin capitalizing costs and address challenges arising from the evolution of software development practices. The new guidance modernizes accounting for software developed using incremental and iterative methods, where the existing model provided limited direction on when capitalization should begin. The ASU also specifies that the disclosures under ASC 360-10, “Property, Plant, and Equipment—Overall,” apply to capitalized software costs accounted for under ASC 350-40, regardless of how those costs are presented in the financial statements. As of January 1, 2026, we have adopted this standard, and it was applied prospectively after this date. The adoption of this standard did not have a material impact on our condensed consolidated financial statements and related disclosures.

Accounting Pronouncements Not Yet Adopted

Disaggregation of Income Statement Expenses

In November 2024, the FASB issued ASU 2024-03, “Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses.” The standard requires that public business entities disclose additional information about specific expense categories in the notes to financial statements for interim and annual reporting periods. The standard will become effective for us for our fiscal year 2027 annual financial
statements and interim financial statements thereafter and may be applied prospectively to periods after the adoption date or retrospectively for all prior periods presented in the financial statements, with early adoption permitted. We plan to adopt the standard when it becomes effective for us beginning in our fiscal year 2027 annual financial statements, and we are currently evaluating the impact this guidance will have on the disclosures included in the Notes to the Consolidated Financial Statements.
v3.26.1
Business Combinations
 3 Months Ended
Mar. 31, 2026
Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract]  
Business Combinations
Note 2 – Business Combinations

Acquisition of Ka’ena Corporation

On March 9, 2023, we entered into a merger and unit purchase agreement (the “Merger and Unit Purchase Agreement”) for the acquisition of 100% of the outstanding equity of Ka’ena Corporation and its subsidiaries, including, among others, Mint Mobile LLC (collectively, “Ka’ena”), for a maximum purchase price of $1.35 billion to be paid out 39% in cash and 61% in shares of T-Mobile common stock (the “Ka’ena Acquisition”). On March 13, 2024, we entered into Amendment No. 1 to the Merger and Unit Purchase Agreement, which amended, among other things, certain mechanics of the payment of the purchase consideration for the Ka’ena Acquisition, which resulted in a nominal increase in the percentage of cash compared to shares of T-Mobile common stock to be paid out as part of the total purchase price.

Upon the completion of certain customary closing conditions, including the receipt of certain regulatory approvals, on May 1, 2024 (the “Ka’ena Acquisition Date”), we completed the Ka’ena Acquisition, and as a result, Ka’ena became a wholly owned subsidiary of T-Mobile. Concurrently, and as agreed upon through the Merger and Unit Purchase Agreement, T-Mobile and Ka’ena entered into certain separate transactions, including the effective settlement of the preexisting wholesale arrangement between T-Mobile and Ka’ena and agreements with certain of the sellers to provide services to T-Mobile during the post-acquisition period.

In accordance with the terms of the Merger and Unit Purchase Agreement, the total purchase price consisted of an upfront payment on the Ka’ena Acquisition Date and an earnout payable in the third quarter of 2026. On June 30, 2025, we amended the Merger and Unit Purchase Agreement to set the calculation of the earnout as the difference between the maximum purchase price of $1.35 billion and the upfront payment, as adjusted, and removed the requirement for Ka’ena to achieve specified performance indicators.

Based on the amount of the adjusted upfront payment, an additional $420 million in future cash and T-Mobile common stock is
payable in satisfaction of the earnout, related to:

•$251 million for the acquired Ka’ena business; and
•$169 million for services to be provided to T-Mobile by certain of the sellers during the post-acquisition period, as well as the replacement of equity awards of certain Ka’ena employees.

As of March 31, 2026 and December 31, 2025, $244 million and $242 million of liabilities for deferred earnout consideration, respectively, and $164 million and $157 million of liabilities for post-acquisition services, respectively, were presented within current liabilities on our Condensed Consolidated Balance Sheets.

Acquisition of UScellular Wireless Business

On May 24, 2024, we entered into a securities purchase agreement with United States Cellular Corporation (“UScellular”), Telephone and Data Systems, Inc., and USCC Wireless Holdings, LLC for the acquisition of substantially all of UScellular’s wireless operations and select AWS, PCS, 600 MHz, 700 MHz and other spectrum assets for an aggregate purchase price of approximately $4.4 billion, payable in cash and the assumption of up to $2.0 billion of debt through exchange offers to certain UScellular debtholders.

On May 23, 2025, we launched exchange offers (the “Exchange Offers”) for any and all of certain outstanding senior notes of UScellular for new notes of T-Mobile with the same interest rate, interest payment dates, maturity dates and redemption terms as each corresponding series of senior notes of UScellular.

On July 22, 2025, we entered into three separate asset purchase agreements for the acquisition of substantially all of the wireless operations assets (together with UScellular’s wireless operations and select spectrum assets, the “UScellular Wireless Business”) of each of Farmers Cellular Telephone Company, Inc., Iowa RSA No. 9 Limited Partnership and Iowa RSA No. 12 Limited Partnership (collectively, the “Iowa Entities”) for an aggregate purchase price of $175 million payable in cash. Prior to our acquisition of the Iowa Entities, UScellular held a minority interest in each of the Iowa Entities.
On August 1, 2025, upon the completion of certain customary closing conditions, including the receipt of certain regulatory approvals (the “UScellular Acquisition Date”), we completed the acquisition of the UScellular Wireless Business (the “UScellular Acquisition”), and as a result, the UScellular Wireless Business became wholly owned by T-Mobile. In exchange, on the UScellular Acquisition Date, we transferred cash of $2.8 billion. Additionally, the closing of the UScellular Acquisition obligated us to execute the Exchange Offers. UScellular senior notes with an aggregate outstanding principal balance of $1.7 billion were subsequently exchanged for T-Mobile notes in the Exchange Offers on August 5, 2025. The obligation to execute the Exchange Offers was recorded as debt assumed in the UScellular Acquisition with an aggregate assigned fair value of $1.7 billion.

We have accounted for the UScellular Acquisition as a business combination. The identifiable assets acquired and liabilities assumed of the UScellular Wireless Business were recorded at their provisionally assigned fair values as of the UScellular Acquisition Date and consolidated with those of T-Mobile. We are in the process of finalizing the valuation of the assets acquired and liabilities assumed.

Intangible Assets

Goodwill was assigned to our Wireless segment and has a provisionally assigned value of $209 million, which represents the excess of the consideration transferred over the fair values of assets acquired and liabilities assumed. The provisionally assigned goodwill recognized includes synergies expected to be achieved from the operations of the combined company, the assembled workforce of UScellular and intangible assets that do not qualify for separate recognition. Of the total provisionally assigned amount of goodwill resulting from the UScellular Acquisition of $209 million, the preliminary amount deductible for tax purposes is $32 million. Expected synergies from the UScellular Acquisition include the cost savings from the planned integration of network infrastructure, facilities, personnel and systems.

Acquisition of Vistar Media Inc.

On December 20, 2024, we entered into an agreement and plan of merger for the acquisition of 100% of the outstanding capital stock of Vistar Media Inc. (“Vistar”), a provider of technology solutions for digital-out-of-home advertisements (the “Vistar Acquisition”).

Upon the completion of certain customary closing conditions, including the receipt of certain regulatory approvals, on February 3, 2025 (the “Vistar Acquisition Date”), we completed the Vistar Acquisition, and as a result, Vistar became a wholly owned subsidiary of T-Mobile. In exchange, we transferred cash of $621 million. A portion of the payment made on the Vistar Acquisition Date was for the settlement of preexisting relationships with Vistar and is excluded from the fair value of consideration transferred.

Fair Value of Assets Acquired and Liabilities Assumed

We have accounted for the Vistar Acquisition as a business combination. The identifiable assets acquired and liabilities assumed from Vistar were recorded at their fair values as of the Vistar Acquisition Date and consolidated with those of T-Mobile. Assigning fair values to the assets acquired and liabilities assumed at the Vistar Acquisition Date requires the use of judgment regarding estimates and assumptions. For the fair values of the assets acquired and liabilities assumed, we used the cost and income approaches.
The following table summarizes the assigned fair values for each class of assets acquired and liabilities assumed at the Vistar Acquisition Date, as adjusted for information identified during the measurement period, which closed on February 2, 2026.
(in millions)February 3, 2025
Cash and cash equivalents$42 
Accounts receivable157 
Prepaid expense and other current assets2 
Property and equipment1 
Operating lease right-of-use assets1 
Goodwill341 
Other intangible assets264 
Total assets acquired808 
Accounts payable and accrued liabilities128 
Deferred revenue1 
Deferred tax liabilities59 
Operating lease liabilities2 
Total liabilities assumed190 
Total consideration transferred$618 

Acquisition of Blis Holdco Limited

On February 18, 2025, we entered into a share purchase agreement for the acquisition of 100% of the outstanding capital stock of Blis Holdco Limited (“Blis”), a provider of advertising solutions (the “Blis Acquisition”).

Upon the completion of certain customary closing conditions, including the receipt of certain regulatory approvals, on March 3, 2025 (the “Blis Acquisition Date”), we completed the Blis Acquisition, and as a result, Blis became a wholly owned subsidiary of T-Mobile. In exchange, we transferred cash of $180 million. A portion of the payment made on the Blis Acquisition Date was for the settlement of preexisting relationships with Blis and is excluded from the fair value of consideration transferred.

We have accounted for the Blis Acquisition as a business combination. The fair value of consideration transferred as of the Blis Acquisition Date totaled $174 million. The identifiable assets acquired and liabilities assumed from Blis were recorded at their fair values as of the Blis Acquisition Date and consolidated with those of T-Mobile. The assigned fair values of total assets acquired were $263 million, including goodwill of $103 million, and total liabilities assumed were $89 million at the Blis Acquisition Date. These amounts reflect adjustments or information identified during the measurement period, which closed on March 2, 2026.
v3.26.1
Receivables and Related Allowance for Credit Losses
 3 Months Ended
Mar. 31, 2026
Receivables [Abstract]  
Receivables and Related Allowance for Credit Losses
Note 3 – Receivables and Related Allowance for Credit Losses

We maintain an allowance for credit losses by applying an expected credit loss model. Each period, management assesses the appropriateness of the level of allowance for credit losses by considering credit risk inherent within each portfolio segment as of the end of the period.

We consider a receivable past due when a customer has not paid us by the contractually specified payment due date. Account balances are written off against the allowance for credit losses if collection efforts are unsuccessful and the receivable balance is deemed uncollectible (customer default), based on factors such as customer credit ratings, as well as the length of time the amounts are past due.

Our portfolio of receivables is comprised of two portfolio segments: accounts receivable and equipment installment plan (“EIP”) receivables.

Accounts Receivable Portfolio Segment

Accounts receivable balances are predominately comprised of amounts currently due from customers (e.g., for wireless communications services), device insurance administrators, wholesale partners, other carriers and third-party retail channels.

We estimate credit losses associated with our accounts receivable portfolio segment using an expected credit loss model, which utilizes an aging schedule methodology based on historical information and is adjusted for asset-specific considerations, current economic conditions and reasonable and supportable forecasts.
Our approach considers a number of factors, including our overall historical credit losses and payment experience, as well as current collection trends, such as write-off frequency and severity. We also consider other qualitative factors such as current and forecasted macroeconomic conditions.

We consider the need to adjust our estimate of credit losses for reasonable and supportable forecasts of future macroeconomic conditions. To do so, we monitor external forecasts of changes in real U.S. gross domestic product and forecasts of consumer credit behavior for comparable credit exposures.

EIP Receivables Portfolio Segment

Based upon customer credit profiles at the time of customer origination, as well as subsequent credit performance, we designate the EIP receivables segment into two customer classes of “Prime” and “Subprime.” Prime customer receivables are those with lower credit risk, and Subprime customer receivables are those with higher credit risk. Customers may be required to make a down payment on their equipment purchases if their assessed credit risk exceeds established underwriting thresholds. In addition, certain customers within the Subprime category may be required to pay a deposit.

To determine a customer’s credit profile and assist in determining their credit class, we use a proprietary credit scoring model that measures the credit quality of a customer leveraging several factors, such as credit bureau information and consumer credit risk scores, as well as service and device plan characteristics.

EIP receivables had a combined weighted-average effective interest rate of 10.4% and 10.3% as of March 31, 2026 and December 31, 2025, respectively.

The following table summarizes the EIP receivables, including imputed discounts and related allowance for credit losses:
(in millions)March 31,
2026		December 31,
2025
EIP receivables, gross $8,453 $8,626 
Unamortized imputed discount(560)(566)
EIP receivables, net of unamortized imputed discount7,893 8,060 
Allowance for credit losses(405)(380)
EIP receivables, net of allowance for credit losses and imputed discount$7,488 $7,680 
Classified on our condensed consolidated balance sheets as:
Equipment installment plan receivables, net of allowance for credit losses and imputed discount$4,935 $4,997 
Equipment installment plan receivables due after one year, net of allowance for credit losses and imputed discount2,553 2,683 
EIP receivables, net of allowance for credit losses and imputed discount$7,488 $7,680 

Many of our loss estimation techniques rely on delinquency-based models categorized by customer credit class; therefore, delinquency is an important indicator of credit quality in the establishment of our allowance for credit losses for EIP receivables. We manage our EIP receivables portfolio segment using delinquency and customer credit class as key credit quality indicators.

The following table presents the amortized cost of our EIP receivables by delinquency status, customer credit class and year of origination as of March 31, 2026:
Originated in 2026Originated in 2025Originated prior to 2025Total EIP Receivables, Net of
Unamortized Imputed Discount
(in millions)PrimeSubprimePrimeSubprimePrimeSubprimePrimeSubprimeTotal
Current - 30 days past due$1,489 $347 $3,864 $789 $1,026 $195 $6,379 $1,331 $7,710 
31 - 60 days past due13 10 24 23 6 5 43 38 81 
61 - 90 days past due2 1 19 20 5 5 26 26 52 
More than 90 days past due— — 16 20 7 7 23 27 50 
EIP receivables, net of unamortized imputed discount$1,504 $358 $3,923 $852 $1,044 $212 $6,471 $1,422 $7,893 
We estimate credit losses on our EIP receivables segment by applying an expected credit loss model, which relies on historical loss data adjusted for current conditions to calculate default probabilities or an estimate for the frequency of customer default. Our assessment of default probabilities or frequency includes receivables delinquency status, historical loss experience, how long the receivables have been outstanding and customer credit ratings, as well as customer tenure. We multiply these estimated default probabilities by our estimated loss given default, which is the estimated amount of default or the severity of loss.

As we do for our accounts receivable portfolio segment, we consider the need to adjust our estimate of credit losses on EIP receivables for reasonable and supportable forecasts of economic conditions through monitoring external forecasts and periodic internal statistical analyses.

The following table presents write-offs of our EIP receivables by year of origination for the three months ended March 31, 2026:
(in millions)Originated in 2026Originated in 2025Originated prior to 2025Total
Write-offs$3 $166 $48 $217 

Activity for the three months ended March 31, 2026 and 2025, in the allowance for credit losses and unamortized imputed discount balances for the accounts receivable and EIP receivables segments were as follows:
March 31, 2026March 31, 2025
(in millions)Accounts Receivable AllowanceEIP Receivables AllowanceTotalAccounts Receivable AllowanceEIP Receivables AllowanceTotal
Allowance for credit losses and imputed discount, beginning of period$226 $946 $1,172 $176 $814 $990 
Bad debt expense184 242 426 165 158 323 
Write-offs(193)(217)(410)(166)(158)(324)
Change in imputed discount on short-term and long-term EIP receivablesN/A42 42 N/A36 36 
Impact on the imputed discount from sales of EIP receivablesN/A(48)(48)N/A(42)(42)
Allowance for credit losses and imputed discount, end of period$217 $965 $1,182 $175 $808 $983 

Off-Balance-Sheet Credit Exposures

We do not have material off-balance-sheet credit exposures as of March 31, 2026. In connection with the sales of certain service accounts receivable and EIP receivables pursuant to the sale arrangements, we provide guarantees of credit performance included on our Condensed Consolidated Balance Sheets measured at fair value that are based on a discounted cash flow model using Level 3 inputs, including estimated customer default rates and credit worthiness, dilutions and recoveries. See Note 4 – Sales of Certain Receivables for further information.
v3.26.1
Sales of Certain Receivables
 3 Months Ended
Mar. 31, 2026
Transfers and Servicing [Abstract]  
Sales of Certain Receivables
Note 4 – Sales of Certain Receivables

We regularly enter into transactions to sell certain service accounts receivable and EIP receivables. The transactions, including our continuing involvement with the sold receivables and the respective impacts to our condensed consolidated financial statements, are described below.

Sales of EIP Receivables

Overview of the Transaction

In 2015, we entered into an arrangement to sell certain EIP receivables on a revolving basis (the “EIP Sale Arrangement”), which expires November 2026. As of both March 31, 2026, and December 31, 2025, the EIP Sale Arrangement provided funding of $1.3 billion.

In connection with this EIP Sale Arrangement, we formed a wholly owned subsidiary, which qualifies as a bankruptcy remote entity (the “EIP BRE”). We consolidate the EIP BRE under the VIE model.
The following table summarizes the carrying amounts and classification of liabilities, which consist of the recourse guarantee, included on our Condensed Consolidated Balance Sheets with respect to the EIP BRE:
(in millions)March 31,
2026		December 31,
2025
Other current liabilities$92 $90 
Other long-term liabilities13 13 

Sales of Service Accounts Receivable

Overview of the Transaction

In 2014, we entered into an arrangement to sell certain service accounts receivable on a revolving basis (the “Service Receivable Sale Arrangement”). On February 24, 2026, we extended the scheduled expiration date of the Service Receivable Sale Arrangement to February 23, 2027. As of both March 31, 2026, and December 31, 2025, the Service Receivable Sale Arrangement provided funding of $775 million.

In connection with the Service Receivable Sale Arrangement, we formed a wholly owned subsidiary, which qualifies as a bankruptcy remote entity, to sell service accounts receivable (the “Service BRE”). We consolidate the Service BRE under the VIE model.

The following table summarizes the carrying amounts and classification of liabilities included on our Condensed Consolidated Balance Sheets with respect to the Service BRE:
(in millions)March 31,
2026		December 31,
2025
Other current liabilities$287 $306 

Sales of Receivables

The credit enhancement feature of each of the EIP Sale Arrangement and the Service Receivable Sale Arrangement is in the form of a recourse guarantee liability, which is collateralized by pledged but unsold receivables. The recourse guarantee represents a financial instrument that is primarily tied to the creditworthiness of our customers. At inception, we elected to measure the recourse guarantee liabilities at fair value with changes in fair value included in Selling, general and administrative expenses on our Condensed Consolidated Statements of Comprehensive Income. The fair value of the recourse guarantee liabilities is determined based on a discounted cash flow model, which primarily uses Level 3 inputs, including estimated customer default rates and credit worthiness, dilutions and recoveries. Our recourse guarantee liabilities related to the sales of service receivables and EIP receivables were $132 million and $130 million as of March 31, 2026, and December 31, 2025, respectively. These liabilities were collateralized by $284 million and $266 million of gross service receivables and $579 million and $535 million of gross EIP receivables pledged, but unsold as of March 31, 2026, and December 31, 2025, respectively, which represent our maximum exposure under the recourse guarantee.

The following table summarizes the impact of the sales of certain service receivables and EIP receivables on our Condensed Consolidated Balance Sheets:
(in millions)March 31,
2026		December 31,
2025
Derecognized net service accounts receivable and EIP receivables$1,669 $1,651 
Other current liabilities379 397 
of which, recourse guarantee119 117 
Other long-term liabilities13 13 
of which, recourse guarantee13 13 
Net cash proceeds since inception1,352 1,372 
Of which:
Change in net cash proceeds during the year-to-date period(20)(96)
Net cash proceeds funded by reinvested collections1,372 1,468 

We recognized losses from sales of receivables, including changes in fair value of the recourse guarantee liabilities, of $20 million and $22 million for the three months ended March 31, 2026 and 2025, respectively, in Selling, general and administrative expenses on our Condensed Consolidated Statements of Comprehensive Income.
Continuing Involvement
Pursuant to the EIP Sale Arrangement and Service Receivable Sale Arrangement described above, we have continuing involvement with the EIP receivables and service accounts receivables we sell, as we service the receivables, are required to replace certain receivables, including ineligible receivables, aged receivables and receivables where a write-off is imminent, and may be responsible for absorbing credit losses through performance under our recourse guarantee liabilities. We continue to service the customers and their related receivables, including facilitating customer payment collection, in exchange for a monthly servicing fee. As the receivables are sold on a revolving basis, the customer payment collections on sold receivables may be reinvested in new receivable sales. At the direction of the purchasers of the sold receivables, we apply the same policies and procedures while servicing the sold receivables as we apply to our owned receivables, and we continue to maintain normal relationships with our customers.
v3.26.1
Spectrum License Transactions
 3 Months Ended
Mar. 31, 2026
Goodwill and Intangible Assets Disclosure [Abstract]  
Spectrum License Transactions
Note 5 – Spectrum License Transactions

Spectrum Licenses

The following table summarizes our spectrum license activity for the three months ended March 31, 2026:
(in millions)Spectrum
Spectrum licenses, beginning of year$98,032 
Spectrum license acquisitions39 
Spectrum licenses transferred to held for sale(507)
Spectrum licenses, end of period$97,564 

Cash payments to acquire spectrum licenses and payments for costs to clear spectrum are included in Purchases of spectrum licenses and other intangible assets, including deposits. Cash proceeds from the sale of spectrum licenses are included in Proceeds from the sale of property, equipment and intangible assets on our Condensed Consolidated Statements of Cash Flows.

License Purchase Agreements

Comcast Corporation

On September 12, 2023, we entered into a license purchase agreement (the “Comcast License Purchase Agreement”) with Comcast Corporation and its affiliate, Comcast OTR1, LLC (together with Comcast Corporation, “Comcast”), pursuant to which we will acquire spectrum in the 600 MHz band from Comcast (the “Comcast Licenses”) in exchange for total cash consideration of between $1.2 billion and $3.3 billion, subject to an application for FCC approval. The licenses will be acquired without any associated networks.

The final purchase price will be determined, in the aggregate and on a per license basis, based on the set of Comcast Licenses at the time the parties make required transfer filings with the FCC. Prior to the time of such filings, Comcast has the right to remove any or all of a certain specified subset of the Comcast Licenses, totaling $2.1 billion (the “Optional Sale Licenses”), from the Comcast License Purchase Agreement. The removal of any Optional Sale Licenses would reduce the final purchase price by the assigned value of each such license, from the maximum purchase price of $3.3 billion.

The Comcast Licenses are subject to an exclusive leasing arrangement between us and Comcast, which was entered into contemporaneously with the Comcast License Purchase Agreement. If Comcast elects to remove an Optional Sale License from the Comcast License Purchase Agreement, the associated lease for such Optional Sale License will terminate, but no sooner than two years from the date of the Comcast License Purchase Agreement (with us having a minimum period of time after any such termination to cease transmitting on such license’s associated spectrum).

On January 13, 2025, we and Comcast entered into an amendment to the Comcast License Purchase Agreement pursuant to which we will acquire additional spectrum. Subsequent to the amendment, the total cash consideration for the transaction is between $1.2 billion and $3.4 billion.

As a result of additional spectrum acquisitions we are planning with third parties, we have agreed with Comcast to accelerate the consummation of our acquisition of approximately $45 million of the Comcast Licenses. The parties are currently targeting a closing on the acquisition of this accelerated portion of the Comcast Licenses in 2026, with the remaining spectrum license acquisitions targeting a closing in the first half of 2028.
Grain Management, LLC

On May 30, 2025, we entered into a License and Unit Purchase Agreement with NEWLEVEL IV, L.P. and NEWLEVEL, LLC, both of which are affiliates of Grain Management, LLC (“Grain”), pursuant to which we will sell our 800 MHz spectrum licenses in exchange for cash consideration of $2.9 billion and the receipt of Grain’s 600 MHz spectrum licenses, which we are currently utilizing under lease agreements with Grain. In addition, we may receive a share of certain future proceeds from transactions entered into by Grain that monetize the 800 MHz spectrum licenses, subject to certain terms and conditions and following a certain return on invested capital for Grain. As of March 31, 2026, $3.6 billion of the associated 800 MHz spectrum licenses have been classified as held for sale at cost, with $2.9 billion and $690 million presented in Other current assets and Other assets, respectively, on our Condensed Consolidated Balance Sheets based on the nature of consideration to be received. The transaction is subject to customary closing conditions and contingent on the receipt of regulatory approvals, including the FCC’s approval regarding certain modifications to the 800 MHz spectrum licenses, and the parties are currently targeting a closing in 2026. We do not expect the transaction to have a material impact on our Condensed Consolidated Statements of Comprehensive Income upon the transaction close. In addition, we expect an increase to our cash income tax liability of approximately $850 million upon the transaction close.

Spectrum Exchange Transactions

During the three months ended March 31, 2026 and 2025, we recognized $5 million and $172 million, respectively, of non-cash spectrum license acquisitions associated with the closing of certain exchange transactions, which were included in Spectrum Licenses on our Condensed Consolidated Balance Sheets.

During the three months ended March 31, 2026 and 2025, we recognized $2 million and $12 million, respectively, of gains associated with the closing of certain spectrum exchange transactions as a reduction to Selling, general and administrative expenses on our Condensed Consolidated Statements of Comprehensive Income.

As of March 31, 2026 and December 31, 2025, $507 million and $3 million of spectrum licenses were classified as held for sale within Other assets on our Condensed Consolidated Balance Sheets related to additional spectrum exchange agreements pending regulatory approval and closing, which are expected to close in the next 12 months. The closings of these transactions are not expected to have a significant impact on our Condensed Consolidated Statements of Comprehensive Income.
v3.26.1
Fair Value Measurements
 3 Months Ended
Mar. 31, 2026
Fair Value Disclosures [Abstract]  
Fair Value Measurements
Note 6 – Fair Value Measurements

The carrying values of Cash and cash equivalents, Accounts receivable and Accounts payable and accrued liabilities approximate fair value due to the short-term maturities of these instruments. The carrying values of EIP receivables approximate fair value as the receivables are generally recorded at their present value using an imputed interest rate.

Derivative Financial Instruments

We use derivatives to manage exposure to market risk, such as exposure to fluctuations in foreign currency exchange rates and interest rates. We designate certain derivatives as hedging instruments in a qualifying hedge accounting relationship to mitigate fluctuations in values or cash flows related to such risks caused by foreign currency or interest rate volatility. We do not use derivatives for trading or speculative purposes.

Cash flows associated with qualifying hedge derivative instruments are presented in the same category on our Condensed Consolidated Statements of Cash Flows as the item being hedged. For fair value hedges, other than foreign currency hedges, the change in the fair value of the derivative instruments is recognized in earnings through the same income statement line item as the change in the fair value of the hedged item. For cash flow hedges, as well as fair value foreign currency hedges, the change in the fair value of the derivative instruments is reported in Accumulated other comprehensive loss and recognized in earnings when the hedged item is recognized in earnings, again, through the same income statement line item.

We record derivatives on our Condensed Consolidated Balance Sheets at fair value that is derived primarily from observable market data, including exchange rates, interest rates and forward curves. These market inputs are utilized in the discounted cash flow calculation considering the instrument's term, notional amount, discount rate and credit risk. Significant inputs to derivative valuations are generally observable in active markets and, as such, are classified as Level 2 in the fair value hierarchy.
Cross-Currency Swaps

We enter into cross-currency swaps to offset changes in the value of our payments on foreign-denominated debt in USD and to mitigate the impact of foreign currency transaction gains and losses.

We have entered into cross-currency swap agreements, with the same notional amounts as our EUR-denominated debt issuances, to effectively convert €7.3 billion to USD borrowings, with the same maturities as our EUR-denominated debt issuances. The swaps qualify and have been designated as fair value hedges of our EUR-denominated debt, mitigating our exposure to foreign currency transaction gains and losses.

Accordingly, all changes in the fair value of the swaps will be initially recorded through Accumulated other comprehensive loss on our Condensed Consolidated Balance Sheets and reclassified to earnings in an amount that exactly offsets the periodic transaction gain or loss on remeasuring the debt, such that there will be no earnings volatility due to changes in foreign-currency exchange rates. Transaction gains or losses on remeasuring the EUR-denominated debt, as well as the offsetting swap amounts, are recorded within Other expense, net on our Condensed Consolidated Statements of Comprehensive Income.

Changes in the fair value of the swaps may be different from the current period transaction gain or loss on remeasurement of the debt, in which case the difference will remain in Accumulated other comprehensive loss on our Condensed Consolidated Balance Sheets. These differences generally represent credit or liquidity risk, referred to as a basis spread, and the time value of money (“excluded components”). The value of the excluded components is recognized in earnings using a systematic and rational method by accruing the current-period swap settlements into Interest expense, net, on our Condensed Consolidated Statements of Comprehensive Income. If an amount remains in Accumulated other comprehensive loss on our Condensed Consolidated Balance Sheets upon settlement of the derivative, those amounts will be reclassified to earnings at that time.

The following table summarizes the activity of our cross-currency swaps:
Three Months Ended March 31,
(in millions)20262025
Other expense, net
Pre-tax transaction gain (loss) on remeasurement of EUR-denominated debt$183 $(218)
Amount recognized in Other expense, net reclassified from Accumulated other comprehensive loss
(183)218 
Accumulated other comprehensive loss
Amount recognized in Accumulated other comprehensive loss reclassified to Other expense, net
$183 $(218)
Losses associated with the change in fair value of cross-currency swaps recognized in Accumulated other comprehensive loss
(231)(20)

Interest Rate Lock Derivatives

In April 2020, we terminated our interest rate lock derivatives entered into in October 2018. Aggregate changes in the fair value of our terminated interest rate lock derivatives, net of amortization, of $721 million and $771 million are presented in Accumulated other comprehensive loss on our Condensed Consolidated Balance Sheets as of March 31, 2026 and December 31, 2025, respectively.

During the three months ended March 31, 2026 and 2025, we amortized $67 million and $62 million, respectively, from Accumulated other comprehensive loss into Interest expense, net, on our Condensed Consolidated Statements of Comprehensive Income. We expect to amortize $279 million of the Accumulated other comprehensive loss associated with the derivatives into Interest expense, net, over the 12 months ending March 31, 2027.
Debt

The fair values of our Senior Notes and spectrum-backed Senior Secured Notes to third parties were determined based on quoted market prices in active markets. Accordingly, our Senior Notes and spectrum-backed Senior Secured Notes to third parties were classified as Level 1 within the fair value hierarchy. The fair value of our Senior Notes to affiliates was determined based on the fair value of the Senior Notes to third parties with similar terms and maturities. Accordingly, our Senior Notes to affiliates were classified as Level 2 within the fair value hierarchy. The fair values of our Senior Notes to third parties (EUR-denominated) and asset-backed notes (“ABS Notes”) were primarily based on quoted prices in inactive markets for identical instruments and observable changes in market interest rates, both of which are Level 2 inputs. Accordingly, our Senior Notes to third parties (EUR-denominated) and ABS Notes were classified as Level 2 within the fair value hierarchy. The fair value of our borrowings related to credit agreements with certain financial institutions, backed by Export Credit Agencies (the “ECA Facilities”) and the MRFA (as defined below) were determined based on a discounted cash flow approach using market interest rates of instruments with similar maturities and credit risk. Accordingly, our borrowings related to the ECA Facilities and MRFA were classified as Level 2 within the fair value hierarchy.

Although we have determined the estimated fair values using available market information and commonly accepted valuation methodologies, judgment was required in interpreting market data to develop fair value estimates for the Senior Notes to third parties (EUR-denominated), Senior Notes to affiliates, ABS Notes, and borrowings related to the ECA Facilities and MRFA. The fair value estimates were based on information available as of March 31, 2026 and December 31, 2025. As such, our estimates are not necessarily indicative of the amount we could realize in a current market exchange.

The carrying amounts and fair values of our short-term and long-term debt, excluding accrued interest, included on our Condensed Consolidated Balance Sheets were as follows:
(in millions)Level within the Fair Value HierarchyMarch 31, 2026December 31, 2025
Carrying AmountFair ValueCarrying AmountFair Value
Liabilities:
Senior Notes to third parties1$72,247 $67,093 $74,575 $70,517 
Senior Notes to third parties (EUR-denominated)28,284 8,060 5,551 5,460 
Senior Notes to affiliates2— — 1,498 1,500 
Senior Secured Notes to third parties1748 738 844 835 
ABS Notes to third parties21,994 2,003 1,995 2,017 
Borrowings related to ECA Facilities and MRFA22,774 2,828 1,819 1,876 
v3.26.1
Debt
 3 Months Ended
Mar. 31, 2026
Debt Disclosure [Abstract]  
Debt
Note 7 – Debt

The following table sets forth the debt balances and activity as of, and for the three months ended, March 31, 2026:
(in millions)December 31,
2025
Proceeds from Issuances and Borrowings (1)
Note Redemptions (1)
Repayments
Reclassifications (1)
Other (2)
March 31,
2026
Short-term debt$5,135 $— $(3,300)$(135)$538 $— $2,238 
Long-term debt79,649 6,393 (1,497)— (538)(198)83,809 
Total debt to third parties84,784 6,393 (4,797)(135)— (198)86,047 
Long-term debt to affiliates1,498 — (1,498)— — — — 
Total debt$86,282 $6,393 $(6,295)$(135)$— $(198)$86,047 
(1)Issuances and borrowings, note redemptions and reclassifications are recorded net of accrued or paid issuance costs and discounts.
(2)Other includes the amortization of premiums, discounts, debt issuance costs and consent fees, and the impact from changes in foreign currency exchange rates.

Our effective interest rate, excluding the impact of derivatives and capitalized interest, was 4.2% and 4.0% on weighted-average debt outstanding of $86.7 billion and $80.8 billion for the three months ended March 31, 2026 and 2025, respectively. The weighted-average debt outstanding was calculated by applying an average of the monthly ending balances of total short-term and long-term debt to third parties and short-term and long-term debt to affiliates, net of unamortized premiums, discounts, debt issuance costs and consent fees.
Issuances and Borrowings

During the three months ended March 31, 2026, we issued and borrowed the following debt:
(in millions)Principal IssuancesDiscounts and Issuance CostsNet Proceeds from Issuance of DebtIssue Date
5.000% Senior Notes due 2036
$1,150 $(8)$1,142 January 12, 2026
5.850% Senior Notes due 2056
850 (8)842 January 12, 2026
3.200% Senior Notes due 2032 (EUR-denominated)
881 (5)876 February 19, 2026
3.625% Senior Notes due 2035 (EUR-denominated)
881 (5)876 February 19, 2026
3.900% Senior Notes due 2038 (EUR-denominated)
1,175 (12)1,163 February 19, 2026
Total of Senior Notes issued4,937 (38)4,899 
4.250% Class A Senior ABS Notes due 2030
500 (2)498 March 20, 2026
Total of ABS Notes issued500 (2)498 
4.557% MRFA due 2027
1,000 (4)996 February 5, 2026
Total borrowings1,000 (4)996 
Total issuances and borrowings$6,437 $(44)$6,393 

Credit Facilities

On January 5, 2026, we entered into a Second Amended and Restated Credit Agreement (the “January 2026 Credit Agreement”) with certain financial institutions named therein. The January 2026 Credit Agreement amends and restates in its entirety the Amended and Restated Credit Agreement, dated as of October 17, 2022, and provides for a $10.0 billion revolving credit facility, including a letter of credit sub-facility of up to $1.5 billion and a swingline loan sub-facility of up to $500 million. Commitments under the January 2026 Credit Agreement will mature on January 5, 2031, except as otherwise extended or replaced. Borrowings under the January 2026 Credit Agreement will bear interest based upon the applicable benchmark rate, depending on the type of loan and, in some cases, at our election, plus a margin that is determined by reference to the credit rating of T-Mobile USA’s senior unsecured long-term debt. The January 2026 Credit Agreement contains customary representations, warranties and covenants, including a financial maintenance covenant of 4.5x with respect to T-Mobile USA, Inc.’s Leverage Ratio (as defined therein). As of March 31, 2026, we did not have an outstanding balance under this facility.

Note Redemptions and Repayments

During the three months ended March 31, 2026, we made the following redemptions and repayments:
(in millions)Principal Amount
Write-off of Issuance Cost and Consent Fees (1)
Redemption or Repayment DateRedemption Price
4.750% Senior Notes due 2028
$1,500 $3 February 1, 2026100 %
4.750% Senior Notes to affiliates due 2028
1,500 2 February 1, 2026100 %
1.500% Senior Notes due 2026
1,000 — February 15, 2026N/A
2.250% Senior Notes due 2026
1,800 — February 15, 2026N/A
5.050% Class A Senior ABS Notes due 2029
500 — March 20, 2026100 %
Total Redemptions$6,300 $5 
ECA Facility due March 2036$43 $— VariousN/A
5.152% Series 2018-1 A-2 Notes due 2028
92 — VariousN/A
Total Repayments$135 $— 
(1)Write-off of issuance costs and consent fees are included in Other expense, net on our Condensed Consolidated Statements of Comprehensive Income. Write-off of issuance costs and consent fees are included in Other, net within Net cash provided by operating activities on our Condensed Consolidated Statements of Cash Flows.
Asset-backed Notes

On March 20, 2026, we issued $500 million of 4.250% Class A Senior ABS Notes to third parties in a private placement transaction. Net Proceeds of $498 million from these ABS Notes are presented in Proceeds from issuance of long-term debt, net on our Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2026.

As of March 31, 2026, $2.0 billion of our ABS Notes were secured in total by $2.6 billion of gross EIP receivables and future collections on such receivables. Our ABS Notes and the assets securing this debt are included on our Condensed Consolidated Balance Sheets.

The expected maturities of our ABS Notes as of March 31, 2026, were as follows:
(in millions)Expected Maturities
2026$136 
20271,008 
2028758 
202998 
Total$2,000 

Variable Interest Entities

In connection with our ABS Notes issuances, we formed a wholly owned subsidiary, which qualifies as a bankruptcy remote entity (the “ABS BRE”), and a trust (the “ABS Trust” and together with the ABS BRE, the “ABS Entities”), in which the ABS BRE holds a residual interest. Each of the ABS Entities meet the definition of a VIE for which we have determined that we are the primary beneficiary, as we have the power to direct the activities of the ABS Entities that most significantly impact their performance. Accordingly, we include the balances and results of operations of the ABS Entities on our condensed consolidated financial statements.

The following table summarizes the carrying amounts and classification of assets and liabilities included on our Condensed Consolidated Balance Sheets with respect to the ABS Entities:
(in millions)March 31,
2026		December 31,
2025
Assets
Equipment installment plan receivables, net$1,761 $1,865 
Equipment installment plan receivables due after one year, net646 543 
Other current assets222 232 
Liabilities
Accounts payable and accrued liabilities$2 $3 
Short-term debt284 594 
Long-term debt1,709 1,401 

See Note 3 – Receivables and Related Allowance for Credit Losses for additional information on the EIP receivables used to secure the ABS Notes.

Master Receivables Financing Agreement

On February 5, 2026, we entered into a master receivables financing agreement with certain third parties that provides for a revolving loan facility secured by pledged service customer relationships, which include current as well as future monthly service receivables, during the borrowing period (the “MRFA”). Concurrently with the execution of the MRFA, we borrowed $1.0 billion with a floating interest rate indexed to the Secured Overnight Financing Rate (“SOFR”) plus an applicable margin, with an initial scheduled expiry date of February 5, 2027, and principal paydowns beginning thereafter. The net proceeds are presented in Proceeds from issuance of long-term debt on our Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2026.

As of March 31, 2026, $1.0 billion of borrowings are secured by approximately $195 million of outstanding service accounts receivable, the related customer service account contracts and future monthly service receivables. The borrowings related to the MRFA and assets securing these borrowings are included on our Condensed Consolidated Balance Sheets.
Restricted Cash

Certain provisions of our debt agreements require us to maintain specified cash collateral balances. Amounts associated with these balances are considered to be restricted cash. See Note 15 – Additional Financial Information for our reconciliation of Cash and cash equivalents, including restricted cash.
v3.26.1
Tower Obligations
 3 Months Ended
Mar. 31, 2026
Leases [Abstract]  
Tower Obligations
Note 8 – Tower Obligations

Existing CCI Tower Lease Arrangements

In 2012, we conveyed to Crown Castle International Corp. (“CCI”) the exclusive right to manage and operate approximately 6,200 tower sites (“CCI Lease Sites”) via a master prepaid lease with site lease terms ranging from 23 to 37 years. CCI has fixed-price purchase options for the CCI Lease Sites totaling approximately $2.0 billion, exercisable annually on a per-tranche basis at the end of the lease term during the period from December 31, 2035, through December 31, 2049. If CCI exercises its purchase option for any tranche, it must purchase all the towers in the tranche. We lease back a portion of the space at certain tower sites.

Assets and liabilities associated with the operation of the tower sites were transferred to special purpose entities (“SPEs”). Assets included ground lease agreements or deeds for the land on which the towers are situated, the towers themselves and existing subleasing agreements with other mobile network operator tenants that lease space at the tower sites. Liabilities included the obligation to pay ground lease rentals, property taxes and other executory costs.

We determined the SPEs containing the CCI Lease Sites (“Lease Site SPEs”) are VIEs as they lack sufficient equity to finance their activities. We have a variable interest in the Lease Site SPEs but are not the primary beneficiary as we lack the power to direct the activities that most significantly impact the Lease Site SPEs’ economic performance. These activities include managing tenants and underlying ground leases, performing repair and maintenance on the towers, the obligation to absorb expected losses and the right to receive the expected future residual returns from the purchase option to acquire the CCI Lease Sites. As we determined that we are not the primary beneficiary and do not have a controlling financial interest in the Lease Site SPEs, the Lease Site SPEs are not included on our condensed consolidated financial statements.

However, we also considered if this arrangement resulted in the sale of the CCI Lease Sites for which we would derecognize the tower assets. By assessing whether control had transferred, we concluded that transfer of control criteria, as discussed in the revenue standard, were not met. Accordingly, we recorded this arrangement as a financing whereby we recorded debt, a financial obligation, and the CCI Lease Sites tower assets remained on our Condensed Consolidated Balance Sheets. We recorded long-term financial obligations in the amount of the net proceeds received and recognize interest on the tower obligations. The tower obligations are increased by interest expense and amortized through contractual leaseback payments made by us to CCI and through net cash flows generated and retained by CCI from the operation of the tower sites.

Acquired CCI Tower Lease Arrangements

Prior to our merger (the “Sprint Merger”) with Sprint Corporation (“Sprint”), Sprint entered into a lease-out and leaseback arrangement with Global Signal Inc., a third party that was subsequently acquired by CCI, that conveyed to CCI the exclusive right to manage and operate approximately 6,400 tower sites (“Master Lease Sites”) via a master prepaid lease. These agreements were assumed upon the close of the Sprint Merger, at which point the remaining term of the lease-out was approximately 17 years with no renewal options. CCI has a fixed price purchase option for all (but not less than all) of the leased or subleased sites for approximately $2.3 billion, exercisable one year prior to the expiration of the agreement and ending 120 days prior to the expiration of the agreement. We lease back a portion of the space at certain tower sites.

We considered if this arrangement resulted in the sale of the Master Lease Sites for which we would derecognize the tower assets. By assessing whether control had transferred, we concluded that transfer of control criteria, as discussed in the revenue standard, were not met. Accordingly, we recorded this arrangement as a financing whereby we recorded debt, a financial obligation, and the Master Lease Sites tower assets remained on our Condensed Consolidated Balance Sheets.

We recognize interest expense on the tower obligations. The tower obligations are increased by the interest expense and amortized through contractual leaseback payments made by us to CCI. The tower assets are reported in Property and equipment, net on our Condensed Consolidated Balance Sheets and are depreciated to their estimated residual values over the expected useful life of the towers, which is 20 years.
Leaseback Arrangement

On January 3, 2022, we entered into an agreement (the “Crown Agreement”) with CCI. The Crown Agreement extends the current term of the leasebacks by up to 12 years and modifies the leaseback payments for both the Existing CCI Tower Lease Arrangements and the Acquired CCI Tower Lease Arrangements. As a result of the Crown Agreement, there was an increase in our financing obligation as of the effective date of the Crown Agreement of approximately $1.2 billion, with a corresponding decrease to Other long-term liabilities associated with unfavorable contract terms. The modification resulted in a revised interest rate under the effective interest method for the tower obligations: 11.6% for the Existing CCI Tower Lease Arrangements and 5.3% for the Acquired CCI Tower Lease Arrangements. There were no changes made to either of our master prepaid leases with CCI.

The following table summarizes the balances associated with both of the tower arrangements on our Condensed Consolidated Balance Sheets:
(in millions)March 31,
2026		December 31,
2025
Property and equipment, net$1,886 $1,922 
Tower obligations3,496 3,532 
Other long-term liabilities554 554 

Future minimum payments related to the tower obligations are approximately $391 million for the 12-month period ending March 31, 2027, $816 million in total for both of the 12-month periods ending March 31, 2028 and 2029, $869 million in total for both of the 12-month periods ending March 31, 2030 and 2031, and $3.1 billion in total thereafter.
We are contingently liable for future ground lease payments through the remaining term of the CCI Lease Sites and the Master Lease Sites. These contingent obligations are not included in Operating lease liabilities, as any amount due is contractually owed by CCI based on the subleasing arrangement. Under the arrangement, we remain primarily liable for ground lease payments on approximately 900 sites and have included lease liabilities of $239 million in our Operating lease liabilities as of March 31, 2026.
v3.26.1
Revenue from Contracts with Customers
 3 Months Ended
Mar. 31, 2026
Revenue from Contract with Customer [Abstract]  
Revenue from Contracts with Customers
Note 9 – Revenue from Contracts with Customers

Disaggregation of Revenue

We provide wireless communications and broadband services to a variety of customers, but focus primarily on two categories:

•Postpaid generally includes customers that are qualified to pay after receiving service utilizing phones, 5G broadband gateways, fiber connections, mobile internet devices (including tablets and hotspots), wearables, DIGITS and other connected devices (including SyncUP and IoT); and
•Prepaid generally includes customers that pay for service in advance.

We also provide services to wholesale customers which include Machine-to-Machine and Mobile Virtual Network Operator customers that operate on our network but are managed by wholesale partners.

The balances presented in each revenue line item on our Condensed Consolidated Statements of Comprehensive Income represent categories of revenue from contracts with customers disaggregated by type of product and service. Postpaid and prepaid service revenues also include revenues earned for providing premium services to customers, such as device insurance services.

Contract Balances

The contract asset and contract liability balances from contracts with customers as of March 31, 2026 and December 31, 2025, were as follows:
(in millions)Contract
Assets		Contract
Liabilities
Balance as of December 31, 2025$1,307 $1,653 
Balance as of March 31, 20261,368 1,568 
Change$61 $(85)
Contract assets primarily represent revenue recognized for equipment sales with promotional bill credits offered to customers that are paid over time and are contingent on the customer maintaining a service contract.

The change in the contract asset balance reflects customer activity related to new promotions, offset by billings on existing contracts and impairment, which is recognized as bad debt expense. The current portion of our contract assets of $1.0 billion and $920 million as of March 31, 2026 and December 31, 2025, respectively, was included in Other current assets on our Condensed Consolidated Balance Sheets.

Contract liabilities are recorded when fees are collected, or we have an unconditional right to consideration (a receivable) in advance of delivery of goods or services. Changes in contract liabilities are primarily related to the activity of prepaid customers and contract liabilities assumed in the UScellular Acquisition. Contract liabilities are primarily included in Deferred revenue on our Condensed Consolidated Balance Sheets.

Revenues for the three months ended March 31, 2026 and 2025, include the following:
Three Months Ended March 31,
(in millions)20262025
Amounts included in the beginning of year contract liability balance$1,060 $903 

Remaining Performance Obligations

As of March 31, 2026, the aggregate amount of the transaction price allocated to remaining service performance obligations for postpaid contracts with subsidized devices and promotional bill credits that result in an extended service contract is $2.8 billion. We expect to recognize revenue as the service is provided on these postpaid contracts, generally over a period of 24 months from the time of origination.

Information about remaining performance obligations that are part of a contract that has an original expected duration of one year or less has been excluded from the above, which primarily consists of monthly service contracts.

Certain of our wholesale, roaming and service contracts include variable consideration based on usage and performance. This variable consideration has been excluded from the disclosure of remaining performance obligations. As of March 31, 2026, the aggregate amount of the contractual minimum consideration for wholesale, roaming and service contracts is $986 million, $968 million and $2.2 billion for the remainder of 2026, 2027, and 2028 and beyond, respectively. These contracts have a remaining duration ranging from less than one year to six years.

Contract Costs

The balance of deferred incremental costs to obtain contracts with customers was $2.0 billion for both March 31, 2026 and December 31, 2025, and is included in Other assets on our Condensed Consolidated Balance Sheets. Deferred contract costs incurred to obtain postpaid service contracts are amortized over a period of 24 months. The amortization period is monitored to reflect any significant change in assumptions. Amortization of deferred contract costs included in Selling, general and administrative expenses on our Condensed Consolidated Statements of Comprehensive Income were $473 million and $485 million for the three months ended March 31, 2026 and 2025, respectively.

The deferred contract cost asset is assessed for impairment on a periodic basis. There were no impairment losses recognized on deferred contract cost assets for the three months ended March 31, 2026 and 2025.
v3.26.1
Segment Reporting
 3 Months Ended
Mar. 31, 2026
Segment Reporting [Abstract]  
Segment Reporting
Note 10 – Segment Reporting

We manage our business activities on a consolidated basis and operate as a single operating segment: Wireless. We primarily derive our revenue in the United States by providing wireless communications and broadband services to customers using our wireless networks and selling devices that provide customers access to our wireless networks. The accounting policies of the Wireless segment are the same as those described in Part II, Item 8, Note 1 – Summary of Significant Accounting Policies of our Annual Report on Form 10-K for the year ended December 31, 2025.

Our chief operating decision maker (“CODM”) is our President and Chief Executive Officer. The CODM uses Net income, as reported on our Condensed Consolidated Statements of Comprehensive Income, in evaluating performance of the Wireless segment and determining how to allocate resources of the Company as a whole, including investing in our networks and
customers, stockholder return programs and acquisition strategy. The CODM does not review assets in evaluating the results of the Wireless segment, and therefore, such information is not presented.

The following table provides the operating financial results of our Wireless segment:
Three Months Ended March 31,
(in millions)20262025
Total revenues$23,107 $20,886 
Less: Significant and other segment expenses
Cost of equipment sales5,488 4,798 
Employee expenses 2,134 1,909 
Lease expense1,582 1,207 
Advertising expense901 812 
Bad debt expense426 323 
Other segment items (1)
4,262 3,839 
Depreciation and amortization3,817 3,198 
Interest expense, net1,031 916 
Other expense, net132 46 
Income tax expense830 885 
Segment net income$2,504 $2,953 
(1)Other segment items included in Segment net income primarily includes certain third-party commissions, external labor and services and backhaul expenses.
v3.26.1
Stockholder Return Programs
 3 Months Ended
Mar. 31, 2026
Equity [Abstract]  
Stockholder Return Programs
Note 11 – Stockholder Return Program

2026 Stockholder Return Program

On December 11, 2025, we announced that our Board of Directors authorized our 2026 Stockholder Return Program of up to $14.6 billion that will run through December 31, 2026 (the “2026 Stockholder Return Program”). The 2026 Stockholder Return Program consists of repurchases of shares of our common stock and the payment of cash dividends. The amount available under the 2026 Stockholder Return Program for share repurchases will be reduced by the amount of any cash dividends declared and paid by us.

On December 4, 2025, our Board of Directors declared a cash dividend of $1.02 per share on our issued and outstanding common stock, which was paid on March 12, 2026, to stockholders of record as of the close of business on February 27, 2026.

On March 19, 2026, our Board of Directors declared a cash dividend of $1.02 per share on our issued and outstanding common stock, which will be paid on June 11, 2026, to stockholders of record as of the close of business on May 29, 2026.

During the three months ended March 31, 2026, we paid an aggregate of $1.1 billion in cash dividends to our stockholders, which was presented within Net cash (used in) provided by financing activities on our Condensed Consolidated Statements of Cash Flows, of which $594 million was paid to Deutsche Telekom AG (“DT”). As of March 31, 2026, $1.1 billion for dividends payable is presented within Other current liabilities on our Condensed Consolidated Balance Sheets, of which $594 million is payable to DT.

During the three months ended March 31, 2026, we repurchased 23,329,925 shares of our common stock at an average price per share of $210.07 for a total purchase price of $4.9 billion, under the 2026 Stockholder Return Program. All shares repurchased during the three months ended March 31, 2026, were purchased at market price. As of March 31, 2026, we had up to $8.6 billion remaining under the 2026 Stockholder Return Program for repurchases of shares and quarterly dividends through December 31, 2026.

Subsequent to March 31, 2026, on April 23, 2026, we announced that our Board of Directors increased the 2026 Stockholder Return Program authorization to up to $18.2 billion.

Subsequent to March 31, 2026, from April 1, 2026, through April 24, 2026, we repurchased 3,791,020 shares of our common stock at an average price per share of $195.87 for a total purchase price of $743 million. As of April 24, 2026, we had up to $11.5 billion remaining under the 2026 Stockholder Return Program for repurchases of shares and quarterly dividends through December 31, 2026.
v3.26.1
Earnings Per Share
 3 Months Ended
Mar. 31, 2026
Earnings Per Share [Abstract]  
Earnings Per Share
Note 12 – Earnings Per Share

The computation of basic and diluted earnings per share was as follows:
Three Months Ended March 31,
(in millions, except shares and per share amounts)20262025
Net income$2,504 $2,953 
Weighted-average shares outstanding – basic (1)
1,100,174,423 1,140,537,935 
Effect of dilutive securities:
Outstanding stock options and unvested stock awards (1)
1,878,823 4,117,362 
Weighted-average shares outstanding – diluted1,102,053,246 1,144,655,297 
Earnings per share – basic$2.28 $2.59 
Earnings per share – diluted$2.27 $2.58 
Potentially dilutive securities:
Outstanding stock options and unvested stock awards2,193,273 961,773 
Ka’ena Acquisition earnout (2)
— 979,153 
(1)     For the three months ended March 31, 2026, the weighted-average number of shares issuable related to the Ka’ena Acquisition earnout (“Ka’ena Shares”) are included in our calculations of basic and diluted weighted-average shares outstanding based on the 20 trading day volume-weighted average price as of March 31, 2026, as further described below.
(2)     Represents the Ka’ena Shares that were contingently issuable based on achievement of specified performance indicators from the Ka’ena Acquisition closing date of May 1, 2024, based on the maximum number of shares contingently issuable for the earnout and 20 trading day volume-weighted average price as of March 31, 2025.

As of March 31, 2026, we had authorized 100 million shares of preferred stock, with a par value of $0.00001 per share. There was no preferred stock outstanding as of March 31, 2026 and 2025. Potentially dilutive securities were not included in the computation of diluted earnings per share if to do so would have been anti-dilutive.
The Ka’ena Shares were previously contingent consideration for the Ka’ena Acquisition. On June 30, 2025, we amended the Merger and Unit Purchase Agreement to set the calculation of the earnout as the difference between the maximum purchase price of $1.35 billion and the upfront payment, as adjusted, and removed the requirement for Ka’ena to achieve specified performance indicators. The Ka’ena Shares issuable are included in the calculation of basic and diluted weighted-average shares outstanding for the three months ended March 31, 2026. The Ka’ena Shares are expected to be issued after the Ka’ena Acquisition earnout payment date.
v3.26.1
Commitments and Contingencies
 3 Months Ended
Mar. 31, 2026
Commitments and Contingencies Disclosure [Abstract]  
Commitments and Contingencies
Note 13 – Commitments and Contingencies

Sprint Merger Commitments

In connection with the regulatory proceedings and approvals of the Sprint Merger pursuant to the Business Combination Agreement with Sprint and the other parties named therein (as amended, the “Business Combination Agreement”) and the other transactions contemplated by the Business Combination Agreement, we have commitments and other obligations to various state and federal agencies and certain nongovernmental organizations, including pursuant to the Consent Decree agreed to by us, DT, Sprint, SoftBank Group Corp. (“SoftBank”) and DISH Network Corporation (“DISH”) and entered by the U.S. District Court for the District of Columbia, and the FCC’s memorandum opinion and order approving our applications for approval of the Sprint Merger. These commitments and obligations include, among other things, extensive 5G network build-out commitments, obligations to deliver high-speed wireless services to the vast majority of Americans, including Americans residing in rural areas, the marketing of an in-home broadband product where spectrum capacity is available and national security commitments. Many of the commitments specify time frames for compliance and reporting. Failure to fulfill our obligations and commitments in a timely manner could result in substantial fines, penalties, or other legal and administrative actions.
Contingencies and Litigation

Litigation and Regulatory Matters

We are involved in various lawsuits and disputes, claims, government agency investigations and enforcement actions, and other proceedings (“Litigation and Regulatory Matters”) that arise in the ordinary course of business, which include claims of patent infringement (most of which are asserted by non-practicing entities primarily seeking monetary damages), class actions, and proceedings to enforce FCC or other government agency rules and regulations. Those Litigation and Regulatory Matters are at various stages, and some of them may proceed to trial, arbitration, hearing, or other adjudication that could result in fines, penalties, or awards of monetary or injunctive relief in the coming 12 months if they are not otherwise resolved. We have established an accrual with respect to certain of these matters, where appropriate. The accruals are reflected on our condensed consolidated financial statements, but they are not considered to be, individually or in the aggregate, material. An accrual is established when we believe it is both probable that a loss has been incurred and an amount can be reasonably estimated. For other matters, where we have not determined that a loss is probable or because the amount of loss cannot be reasonably estimated, we have not recorded an accrual due to various factors typical in contested proceedings, including, but not limited to, uncertainty concerning legal theories and their resolution by courts or regulators, uncertain damage theories and demands, and a less than fully developed factual record. For Litigation and Regulatory Matters that may result in a contingent gain, we recognize such gains on our condensed consolidated financial statements when the gain is realized or realizable. We recognize legal costs expected to be incurred in connection with Litigation and Regulatory Matters as they are incurred. Except as otherwise specified below, we do not expect that the ultimate resolution of these Litigation and Regulatory Matters, individually or in the aggregate, will have a material adverse effect on our financial position, but we note that an unfavorable outcome of some or all of the specific matters identified below, or other matters that we are or may become involved in could have a material adverse impact on results of operations or cash flows for a particular period. This assessment is based on our current understanding of relevant facts and circumstances. As such, our view of these matters is subject to inherent uncertainties and may change in the future.

On February 28, 2020, T-Mobile and Sprint each received a Notice of Apparent Liability for Forfeiture and Admonishment from the FCC, which proposed a penalty for allegedly violating section 222 of the Communications Act and the FCC’s regulations governing the privacy of customer information. On April 29, 2024, the FCC issued Forfeiture Orders against T-Mobile and Sprint that largely adopted the allegations and conclusions of the Notices of Apparent Liability and imposed penalties on T-Mobile and Sprint. T-Mobile and Sprint paid those penalties under protest, and on June 27, 2024, T-Mobile and Sprint filed Petitions for Review challenging the FCC’s Forfeiture Orders in the United States Court of Appeals for the District of Columbia. On August 15, 2025, a panel of three judges denied the petitions for review. On January 23, 2026, the Court of Appeals denied T-Mobile’s petitions for rehearing and rehearing en banc. T-Mobile intends to file a petition for a writ of certiorari with the United States Supreme Court. We are unable to predict the potential outcome of those proceedings.

On April 1, 2020, in connection with the closing of the Sprint Merger, we assumed the contingencies and litigation matters of Sprint. Those matters include a wide variety of disputes, claims, government agency investigations and enforcement actions, and other proceedings.

On June 1, 2021, a putative shareholder class action and derivative lawsuit was filed in the Delaware Court of Chancery, Dinkevich v. Deutsche Telekom AG, et al., Case No. C.A. No. 2021-0479, against DT, SoftBank and certain of our current and former officers and directors, asserting breach of fiduciary duty claims relating to the repricing amendment to the Business Combination Agreement and to SoftBank’s monetization of its T-Mobile shares. We are also named as a nominal defendant in the case. We are unable to predict the potential outcome of these claims.

On August 12, 2021, we became aware of a cybersecurity issue involving unauthorized access to T-Mobile’s systems (the “August 2021 cyberattack”). Our investigation uncovered that the perpetrator had illegally gained access to certain areas of our systems on or about March 18, 2021, but only gained access to and took data of current, former, and prospective customers beginning on or about August 3, 2021.

As a result of the August 2021 cyberattack, we have become subject to numerous lawsuits, including mass arbitration claims and multiple class action lawsuits that have been filed in numerous jurisdictions seeking, among other things, unspecified monetary damages, costs and attorneys’ fees arising out of the August 2021 cyberattack. In December 2021, the Judicial Panel on Multidistrict Litigation consolidated the federal class action lawsuits in the U.S. District Court for the Western District of Missouri under the caption In re: T-Mobile Customer Data Security Breach Litigation, Case No. 21-md-3019-BCW. On July 22, 2022, we entered into an agreement to settle the lawsuit. On June 29, 2023, the Court issued an order granting final approval of the settlement. All appeals have been resolved, and the settlement is now final. Under the terms of the settlement, we have paid an aggregate of $350 million to fund claims submitted by class members, the legal fees of plaintiffs’ counsel and the costs
of administering the settlement. As required under the terms of the settlement, we have spent an aggregate of $150 million for data security and related technology in 2022 and 2023. The settlement provides a full release of all claims arising out of the August 2021 cyberattack by class members who did not opt out, against all defendants, including us, our subsidiaries and affiliates, and our directors and officers. The settlement contains no admission of liability, wrongdoing or responsibility by any of the defendants.

We anticipate that this settlement of the class action, along with other settlements of separate consumer claims that have been previously completed or are currently pending, will resolve substantially all of the claims brought to date by our current, former and prospective customers who were impacted by the 2021 cyberattack. In connection with the class action settlement and the separate settlements, we recorded a total pre-tax charge of approximately $400 million in the second quarter of 2022.

We have also received inquiries and contested legal proceedings from various government agencies, law enforcement and other governmental authorities related to the August 2021 cyberattack, which could result in substantial fines or penalties. We reached an agreement with the FCC, which was announced on September 30, 2024, to resolve one of those inquiries. We will continue to respond to the other agencies and regulators inquiring about the matter with an aim to resolve all of these matters. While we hope to resolve them in the near term, we cannot predict the timing or outcome of any of these matters or whether we may be subject to further regulatory inquiries, investigations, or legal or enforcement actions.

In light of the inherent uncertainties involved in such matters, and based on the information currently available to us, in addition to the previously recorded pre-tax charge of approximately $400 million noted above, we believe it is reasonably possible that we could incur additional losses associated with these proceedings and inquiries, and we will continue to evaluate information as it becomes known and will record an estimate for losses at the time or times when it is both probable that a loss has been incurred and the amount of the loss is reasonably estimable. Ongoing legal and other costs related to these proceedings and inquiries, as well as any potential future actions, may be substantial, and losses associated with any adverse judgments, settlements, penalties or other resolutions of such proceedings and inquiries could be material to our business, reputation, financial condition, cash flows and operating results.

On June 17, 2022, plaintiffs filed a putative antitrust class action complaint in the Northern District of Illinois, Dale, et al. v. Deutsche Telekom AG, et al., Case No. 1:22-cv-03189, against DT, T-Mobile, and SoftBank, alleging that the Sprint Merger violated the antitrust laws and harmed competition in the U.S. retail cell service market. Plaintiffs seek injunctive relief and trebled monetary damages on behalf of a purported class of AT&T and Verizon customers whom plaintiffs allege paid artificially inflated prices due to the Sprint Merger. We are vigorously defending this lawsuit, but we are unable to predict the potential outcome.

On January 5, 2023, we identified that a bad actor was obtaining data through a single Application Programming Interface (“API”) without authorization. Based on our investigation, the impacted API is only able to provide a limited set of customer account data, including name, billing address, email, phone number, date of birth, T-Mobile account number and information, such as the number of lines on the account and plan features. The result from our investigation indicates that the bad actor(s) obtained data from this API for approximately 37 million current postpaid and prepaid customer accounts, though many of these accounts did not include the full data set. We believe that the bad actor first retrieved data through the impacted API starting on or around November 25, 2022. We have notified individuals whose information was impacted consistent with state and federal requirements.

In connection with the January 2023 cyberattack, we became subject to consumer class actions and regulatory inquiries, to which we will continue to respond in due course and may incur significant expenses. However, we cannot predict the timing or outcome of any of these potential matters or whether we may be subject to additional legal proceedings, claims, regulatory inquiries, investigations, or enforcement actions.

On February 25, 2025, a purported Company shareholder filed a putative class action and derivative lawsuit in the Delaware Court of Chancery under the caption Palkon v. Deutsche Telekom AG, et al., Case No. 2025-0211-PAF, against four DT entities, our current directors, and certain of our former directors, asserting breach of fiduciary duty and unjust enrichment claims relating to our 2022 Stock Repurchase Program and our 2023-2024 Stockholder Return Program. We are also named as a nominal defendant in the lawsuit. We are unable to predict the potential outcome of these claims.
v3.26.1
Restructuring Costs
 3 Months Ended
Mar. 31, 2026
Restructuring and Related Activities [Abstract]  
Restructuring Costs
Note 14 – Restructuring Costs

UScellular Acquisition Restructuring Initiatives

Upon completing the UScellular Acquisition on August 1, 2025, we began implementing restructuring initiatives to realize cost efficiencies and eliminate redundancies. The major activities associated with the UScellular Acquisition restructuring initiatives will include contract termination costs associated with the rationalization of retail stores, distribution channels, duplicative network and backhaul services and other agreements, severance costs associated with the integration of redundant processes and functions and the decommissioning of certain cell sites and distributed antenna systems to achieve synergies in network costs.

The following table summarizes the expenses incurred in connection with our UScellular Acquisition restructuring initiatives:
(in millions)Three Months Ended March 31, 2026Incurred to Date
Contract termination costs$41 $73 
Severance costs26 89 
Network decommissioning18 34 
Total restructuring plan expenses$85 $196 

The expenses associated with our UScellular Acquisition restructuring initiatives are included in Cost of services and Selling, general and administrative expenses on our Condensed Consolidated Statements of Comprehensive Income.

Our UScellular Acquisition restructuring initiatives will also include the acceleration or termination of certain of our operating leases for cell sites, switch sites and retail stores. Incremental expenses associated with terminated leases and leases for which we have recognized accelerated lease expense were $280 million for the three months ended March 31, 2026, and are included in Cost of services on our Condensed Consolidated Statements of Comprehensive Income.

Additionally, we recognized $229 million of accelerated depreciation for the three months ended March 31, 2026, related to assets associated with the decommissioning of cell sites, which is included in Depreciation and amortization on our Condensed Consolidated Statements of Comprehensive Income.

The changes in the liabilities associated with our UScellular Acquisition restructuring initiatives, including expenses incurred and cash payments, are as follows:
(in millions)December 31,
2025		Expenses IncurredCash PaymentsMarch 31,
2026
Contract termination costs$31 $41 $(32)$40 
Severance costs59 26 (8)77 
Network decommissioning1 18 (15)4 
Total$91 $85 $(55)$121 

The liabilities accrued in connection with our UScellular Acquisition restructuring initiatives are presented in Accounts payable and accrued liabilities on our Condensed Consolidated Balance Sheets.

Our UScellular Acquisition restructuring activities are expected to occur over the next two years, with substantially all costs incurred by the end of fiscal year 2027. We are evaluating additional restructuring initiatives associated with the UScellular Acquisition, which are dependent on consultations and negotiations with certain counterparties and the expected impact on our business operations, which could affect the amount or timing of the restructuring costs and related payments.

Network Restructuring Initiative

Recent technological advancements have enhanced our Customer-Driven Coverage insights, enabling us to identify, assess and shut down low customer value sites. In the fourth quarter of 2025, we began implementing restructuring initiatives to identify and realize these cost savings on our network, excluding activities associated with the UScellular Acquisition (the “Network Restructuring Initiative”). The major activities associated with the Network Restructuring Initiative include the rationalization of network and backhaul services and the decommissioning of cell sites and distributed antenna systems to reduce our overall network cost.
The following table summarizes the expenses incurred in connection with our Network Restructuring Initiative:
(in millions)Three Months Ended March 31, 2026Incurred to Date
Contract termination costs$27 $32 
Network decommissioning38 102 
Total restructuring plan expenses$65 $134 

The expenses associated with our Network Restructuring Initiative are included in Cost of services on our Condensed Consolidated Statements of Comprehensive Income.

Our Network Restructuring Initiative also includes the termination of certain of our operating leases for cell sites and switch sites. Incremental expenses associated with terminated leases and leases for which we have recognized accelerated lease expense were $11 million for the three months ended March 31, 2026, and are included in Cost of services on our Condensed Consolidated Statements of Comprehensive Income.

Additionally, we recognized $60 million of accelerated depreciation for the three months ended March 31, 2026, related to assets associated with the decommissioning of cell sites, which is included in Depreciation and amortization on our Condensed Consolidated Statements of Comprehensive Income.

The changes in the liabilities associated with our Network Restructuring Initiative, including expenses incurred and cash payments, are as follows:
(in millions)December 31,
2025		Expenses IncurredCash PaymentsMarch 31,
2026
Contract termination costs$— $27 $(14)$13 
Network decommissioning1 38 (12)27 
Total$1 $65 $(26)$40 

The liabilities accrued in connection with our Network Restructuring Initiative are presented in Accounts payable and accrued liabilities on our Condensed Consolidated Balance Sheets.

Our Network Restructuring Initiative is expected to be completed prior to the end of 2027, with a majority of costs incurred by the end of 2026. We are evaluating additional restructuring activities associated with the Network Restructuring Initiative, which are dependent on consultations and negotiations with certain counterparties and the expected impact on our business operations, which could affect the amount or timing of the restructuring costs and related payments.

2025-2026 Workforce Transformation

In the fourth quarter of 2025, we began implementing a restructuring initiative to streamline operations by centralizing leaders and teams, reducing organizational layers and eliminating duplicative roles (the “2025-2026 Workforce Transformation”).

The following table summarizes the expenses incurred in connection with our 2025-2026 Workforce Transformation initiative:
(in millions)Three Months Ended March 31, 2026Incurred to Date
Severance costs$141 $531 

The expenses associated with our workforce reduction initiative are included in Cost of services and Selling, general and administrative expenses on our Condensed Consolidated Statements of Comprehensive Income.

The changes in the liabilities associated with our 2025-2026 Workforce Transformation initiative, including expenses incurred and cash payments, are as follows:
(in millions)December 31,
2025		Expenses IncurredCash PaymentsMarch 31,
2026
Severance costs$374 $141 $(123)$392 

The liabilities accrued in connection with our 2025-2026 Workforce Transformation initiative are presented in Accounts payable and accrued liabilities on our Condensed Consolidated Balance Sheets.
We have incurred substantially all of the costs associated with our 2025-2026 Workforce Transformation. We expect substantially all remaining associated employee separations and related cash outflows to occur in 2026.
v3.26.1
Additional Financial Information
 3 Months Ended
Mar. 31, 2026
Supplemental Financial Statement Elements [Abstract]  
Additional Financial Information
Note 15 – Additional Financial Information

Accounts Payable and Accrued Liabilities

Accounts payable and accrued liabilities are summarized as follows:
(in millions)March 31,
2026		December 31,
2025
Accounts payable$4,573 $5,219 
Payroll and related benefits1,316 1,709 
Property and other taxes, including payroll1,697 1,601 
Accrued interest1,073 1,025 
Other accrued liabilities863 726 
Accounts payable and accrued liabilities$9,522 $10,280 

Book overdrafts included in Accounts payable were $363 million and $823 million as of March 31, 2026 and December 31, 2025, respectively.

Supplemental Condensed Consolidated Statements of Cash Flows Information

The following table summarizes T-Mobile’s supplemental cash flow information:
Three Months Ended March 31,
(in millions)20262025
Interest payments, net of amounts capitalized$1,054 $934 
Operating lease payments1,537 1,214 
Income tax payments, net of refunds received10 10 
Non-cash investing and financing activities
Change in accounts payable and accrued liabilities for purchases of property and equipment$(357)$(463)
Operating lease right-of-use assets obtained in exchange for lease obligations525 481 
Financing lease right-of-use assets obtained in exchange for lease obligations222 248 

Cash and Cash Equivalents, Including Restricted Cash

Cash and cash equivalents, including restricted cash, presented on our Condensed Consolidated Statements of Cash Flows were included on our Condensed Consolidated Balance Sheets as follows:
(in millions)March 31,
2026		December 31,
2025
Cash and cash equivalents$3,520 $5,598 
Restricted cash (included in Other current assets)301 296 
Restricted cash (included in Other assets)88 82 
Cash and cash equivalents, including restricted cash$3,909 $5,976 
v3.26.1
Subsequent Events
 3 Months Ended
Mar. 31, 2026
Subsequent Events [Abstract]  
Subsequent Events
Note 16 – Subsequent Events

On April 23, 2026, we announced that our Board of Directors increased the 2026 Stockholder Return Program authorization from up to $14.6 billion to up to $18.2 billion.

From April 1, 2026, through April 24, 2026, we repurchased 3,791,020 shares of our common stock at an average price per share of $195.87 for a total purchase price of $743 million. See Note 11 - Stockholder Return Program for additional information.

On April 24, 2026, we entered into a definitive agreement with an affiliate of Wren House Infrastructure Management Limited (“Wren House”) to establish a joint venture that will acquire i3 Broadband, one of Wren House’s existing fiber portfolio companies. The transaction with Wren House is expected to close in the second half of 2026, subject to customary closing conditions and regulatory approvals, at which time we expect to invest approximately $700 million to acquire a 50% equity interest in the joint venture and substantially all existing residential fiber customers. Additionally, on April 25, 2026, we entered
into definitive agreements with affiliates of Oak Hill Capital Management, LLC (“Oak Hill”) to establish a joint venture that will acquire and combine GoNetspeed and Greenlight Networks, two of Oak Hill’s existing fiber portfolio companies. The transaction with Oak Hill is expected to close in the first half of 2027, subject to customary closing conditions and regulatory approvals, at which time we expect to invest approximately $2.0 billion to acquire a 50% equity interest in the joint venture and substantially all existing residential fiber customers. We expect to account for these joint ventures under the equity method of accounting and recognize service revenues for the acquired fiber customers and wholesale costs paid to the joint venture for network access within Postpaid revenues and Cost of services, respectively, on our Condensed Consolidated Statements of Comprehensive Income.
v3.26.1
Insider Trading Arrangements
 3 Months Ended
Mar. 31, 2026
shares
Trading Arrangements, by Individual  
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
Jonathan Freier [Member]  
Trading Arrangements, by Individual  
Material Terms of Trading Arrangement
On February 19, 2026, Jonathan Freier, the Company’s Chief Operating Officer, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 23,739 shares of the Company’s common stock he acquired on February 15, 2026, upon the vesting of certain time-based restricted stock unit awards and performance-based restricted stock unit awards (“PRSUs”), subject to certain conditions. The duration of this trading plan is 315 days.
Name Jonathan Freier
Title Chief Operating Officer
Rule 10b5-1 Arrangement Adopted true
Adoption Date February 19, 2026
Arrangement Duration 315 days
Aggregate Available 23,739
Mark W. Nelson [Member]  
Trading Arrangements, by Individual  
Material Terms of Trading Arrangement
On February 23, 2026, Mark W. Nelson, the Company’s Chief Legal Officer and General Counsel, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell the shares of the Company’s common stock he will acquire on February 15, 2027, upon the vesting of certain time-based restricted stock unit awards and PRSUs, up to a total of 23,596 shares assuming PRSUs will vest at maximum value, subject to certain conditions. The duration of this trading plan is 368 days.
Name Mark W. Nelson
Title Chief Legal Officer and General Counsel
Rule 10b5-1 Arrangement Adopted true
Adoption Date February 23, 2026
Arrangement Duration 368 days
Aggregate Available 23,596
Deeanne King [Member]  
Trading Arrangements, by Individual  
Material Terms of Trading Arrangement
On March 9, 2026, Deeanne King, the Company’s Chief People Officer, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 20,868 shares of the Company’s common stock, subject to certain conditions. The duration of this trading plan is 365 days.
Name Deeanne King
Title Chief People Officer
Rule 10b5-1 Arrangement Adopted true
Adoption Date March 9, 2026
Arrangement Duration 365 days
Aggregate Available 20,868
Marcelo Claure [Member]  
Trading Arrangements, by Individual  
Material Terms of Trading Arrangement
On March 13, 2026, Claure Mobile LLC, an entity affiliated with Marcelo Claure, a director of the Company, adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) to sell up to 620,400 shares of the Company’s common stock, subject to certain conditions. The duration of this trading plan is 413 days.
Name Marcelo Claure
Title director
Rule 10b5-1 Arrangement Adopted true
Adoption Date March 13, 2026
Arrangement Duration 413 days
Aggregate Available 620,400
v3.26.1
Summary of Significant Accounting Policies (Policies)
 3 Months Ended
Mar. 31, 2026
Accounting Policies [Abstract]  
Consolidation
The unaudited condensed consolidated financial statements of T-Mobile US, Inc. (“T-Mobile,” “we,” “our,” “us” or the “Company”) include all adjustments of a normal recurring nature necessary for the fair presentation of the results for the interim periods presented. The results for the interim periods are not necessarily indicative of those for the full year. The condensed consolidated financial statements should be read in conjunction with our consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2025.

The condensed consolidated financial statements include the balances and results of operations of T-Mobile and our consolidated subsidiaries. We consolidate majority-owned subsidiaries over which we exercise control, variable interest entities (“VIEs”) for which we are deemed to be the primary beneficiary and VIEs which cannot be deconsolidated, such as those related to our tower obligations as discussed in Note 8 - Tower Obligations. Intercompany transactions and balances have been eliminated in consolidation. Investments in entities that we do not control but have significant influence are accounted for under the equity method. We record our proportionate share of our equity method investees’ earnings (losses) within Other expense, net on our Condensed Consolidated Statements of Comprehensive Income.
Basis of Accounting The preparation of financial statements in conformity with United States (“U.S.”) generally accepted accounting principles (“GAAP”) requires our management to make estimates and assumptions that affect the financial statements and accompanying notes.
Use of Estimates Estimates are based on historical experience, where applicable, and other assumptions that management believes are reasonable under the circumstances. Estimates are inherently subject to judgment and actual results could differ from those estimates.
Accounting Pronouncements Adopted During the Current Year and Accounting Pronouncements Not Yet Adopted
Accounting Pronouncements Adopted During the Current Year

Interim Reporting

In December 2025, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2025-11, “Interim Reporting (Topic 270): Narrow-Scope Improvements.” The standard improves the navigability of interim disclosures, clarifies when Topic 270 applies and provides additional interim disclosure guidance, including a principle to disclose material events since the most recent annual reporting period. The amendments do not change the underlying objectives of interim reporting but are designed to enhance clarity in application. We evaluated this standard and concluded our interim reporting disclosures are consistent with this standard. Accordingly, the adoption of this standard in the first quarter of 2026 did not have a material impact on our interim reporting disclosures.

Internal-Use Software Accounting and Disclosures

In September 2025, the FASB issued ASU 2025-06, “Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software.” The amendments remove all references to project stages in ASC 350-40, clarify the threshold entities apply to begin capitalizing costs and address challenges arising from the evolution of software development practices. The new guidance modernizes accounting for software developed using incremental and iterative methods, where the existing model provided limited direction on when capitalization should begin. The ASU also specifies that the disclosures under ASC 360-10, “Property, Plant, and Equipment—Overall,” apply to capitalized software costs accounted for under ASC 350-40, regardless of how those costs are presented in the financial statements. As of January 1, 2026, we have adopted this standard, and it was applied prospectively after this date. The adoption of this standard did not have a material impact on our condensed consolidated financial statements and related disclosures.

Accounting Pronouncements Not Yet Adopted

Disaggregation of Income Statement Expenses

In November 2024, the FASB issued ASU 2024-03, “Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses.” The standard requires that public business entities disclose additional information about specific expense categories in the notes to financial statements for interim and annual reporting periods. The standard will become effective for us for our fiscal year 2027 annual financial
statements and interim financial statements thereafter and may be applied prospectively to periods after the adoption date or retrospectively for all prior periods presented in the financial statements, with early adoption permitted. We plan to adopt the standard when it becomes effective for us beginning in our fiscal year 2027 annual financial statements, and we are currently evaluating the impact this guidance will have on the disclosures included in the Notes to the Consolidated Financial Statements.
v3.26.1
Business Combinations (Tables)
 3 Months Ended
Mar. 31, 2026
Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract]  
Schedule of Fair Value of Assets Acquired and Liabilities Assumed
The following table summarizes the assigned fair values for each class of assets acquired and liabilities assumed at the Vistar Acquisition Date, as adjusted for information identified during the measurement period, which closed on February 2, 2026.
(in millions)February 3, 2025
Cash and cash equivalents$42 
Accounts receivable157 
Prepaid expense and other current assets2 
Property and equipment1 
Operating lease right-of-use assets1 
Goodwill341 
Other intangible assets264 
Total assets acquired808 
Accounts payable and accrued liabilities128 
Deferred revenue1 
Deferred tax liabilities59 
Operating lease liabilities2 
Total liabilities assumed190 
Total consideration transferred$618 
v3.26.1
Receivables and Related Allowance for Credit Losses (Tables)
 3 Months Ended
Mar. 31, 2026
Receivables [Abstract]  
Schedule of Equipment Installment Plan Receivables
The following table summarizes the EIP receivables, including imputed discounts and related allowance for credit losses:
(in millions)March 31,
2026		December 31,
2025
EIP receivables, gross $8,453 $8,626 
Unamortized imputed discount(560)(566)
EIP receivables, net of unamortized imputed discount7,893 8,060 
Allowance for credit losses(405)(380)
EIP receivables, net of allowance for credit losses and imputed discount$7,488 $7,680 
Classified on our condensed consolidated balance sheets as:
Equipment installment plan receivables, net of allowance for credit losses and imputed discount$4,935 $4,997 
Equipment installment plan receivables due after one year, net of allowance for credit losses and imputed discount2,553 2,683 
EIP receivables, net of allowance for credit losses and imputed discount$7,488 $7,680 
Schedule of Equipment Installment Plan Receivables by Credit Category
The following table presents the amortized cost of our EIP receivables by delinquency status, customer credit class and year of origination as of March 31, 2026:
Originated in 2026Originated in 2025Originated prior to 2025Total EIP Receivables, Net of
Unamortized Imputed Discount
(in millions)PrimeSubprimePrimeSubprimePrimeSubprimePrimeSubprimeTotal
Current - 30 days past due$1,489 $347 $3,864 $789 $1,026 $195 $6,379 $1,331 $7,710 
31 - 60 days past due13 10 24 23 6 5 43 38 81 
61 - 90 days past due2 1 19 20 5 5 26 26 52 
More than 90 days past due— — 16 20 7 7 23 27 50 
EIP receivables, net of unamortized imputed discount$1,504 $358 $3,923 $852 $1,044 $212 $6,471 $1,422 $7,893 
Schedule of Write Offs Net of Recoveries
The following table presents write-offs of our EIP receivables by year of origination for the three months ended March 31, 2026:
(in millions)Originated in 2026Originated in 2025Originated prior to 2025Total
Write-offs$3 $166 $48 $217 
Schedule of Unamortized Imputed Discount and Allowance for Credit Losses for Equipment Installment Plan Receivables
Activity for the three months ended March 31, 2026 and 2025, in the allowance for credit losses and unamortized imputed discount balances for the accounts receivable and EIP receivables segments were as follows:
March 31, 2026March 31, 2025
(in millions)Accounts Receivable AllowanceEIP Receivables AllowanceTotalAccounts Receivable AllowanceEIP Receivables AllowanceTotal
Allowance for credit losses and imputed discount, beginning of period$226 $946 $1,172 $176 $814 $990 
Bad debt expense184 242 426 165 158 323 
Write-offs(193)(217)(410)(166)(158)(324)
Change in imputed discount on short-term and long-term EIP receivablesN/A42 42 N/A36 36 
Impact on the imputed discount from sales of EIP receivablesN/A(48)(48)N/A(42)(42)
Allowance for credit losses and imputed discount, end of period$217 $965 $1,182 $175 $808 $983 
v3.26.1
Sales of Certain Receivables (Tables)
 3 Months Ended
Mar. 31, 2026
Transfers and Servicing [Abstract]  
Schedule of Variable Interest Entities - EIP
The following table summarizes the carrying amounts and classification of liabilities, which consist of the recourse guarantee, included on our Condensed Consolidated Balance Sheets with respect to the EIP BRE:
(in millions)March 31,
2026		December 31,
2025
Other current liabilities$92 $90 
Other long-term liabilities13 13 
Schedule of Variable Interest Entities
The following table summarizes the carrying amounts and classification of liabilities included on our Condensed Consolidated Balance Sheets with respect to the Service BRE:
(in millions)March 31,
2026		December 31,
2025
Other current liabilities$287 $306 
The following table summarizes the carrying amounts and classification of assets and liabilities included on our Condensed Consolidated Balance Sheets with respect to the ABS Entities:
(in millions)March 31,
2026		December 31,
2025
Assets
Equipment installment plan receivables, net$1,761 $1,865 
Equipment installment plan receivables due after one year, net646 543 
Other current assets222 232 
Liabilities
Accounts payable and accrued liabilities$2 $3 
Short-term debt284 594 
Long-term debt1,709 1,401 
Schedule of Factoring Arrangement
The following table summarizes the impact of the sales of certain service receivables and EIP receivables on our Condensed Consolidated Balance Sheets:
(in millions)March 31,
2026		December 31,
2025
Derecognized net service accounts receivable and EIP receivables$1,669 $1,651 
Other current liabilities379 397 
of which, recourse guarantee119 117 
Other long-term liabilities13 13 
of which, recourse guarantee13 13 
Net cash proceeds since inception1,352 1,372 
Of which:
Change in net cash proceeds during the year-to-date period(20)(96)
Net cash proceeds funded by reinvested collections1,372 1,468 
v3.26.1
Spectrum License Transactions (Tables)
 3 Months Ended
Mar. 31, 2026
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Spectrum Licenses
The following table summarizes our spectrum license activity for the three months ended March 31, 2026:
(in millions)Spectrum
Spectrum licenses, beginning of year$98,032 
Spectrum license acquisitions39 
Spectrum licenses transferred to held for sale(507)
Spectrum licenses, end of period$97,564 
v3.26.1
Fair Value Measurements (Tables)
 3 Months Ended
Mar. 31, 2026
Fair Value Disclosures [Abstract]  
Schedule of Cross Currency Swaps
The following table summarizes the activity of our cross-currency swaps:
Three Months Ended March 31,
(in millions)20262025
Other expense, net
Pre-tax transaction gain (loss) on remeasurement of EUR-denominated debt$183 $(218)
Amount recognized in Other expense, net reclassified from Accumulated other comprehensive loss
(183)218 
Accumulated other comprehensive loss
Amount recognized in Accumulated other comprehensive loss reclassified to Other expense, net
$183 $(218)
Losses associated with the change in fair value of cross-currency swaps recognized in Accumulated other comprehensive loss
(231)(20)
Schedule of Carrying Values and Fair Values of Short-Term and Long-term Debt
The carrying amounts and fair values of our short-term and long-term debt, excluding accrued interest, included on our Condensed Consolidated Balance Sheets were as follows:
(in millions)Level within the Fair Value HierarchyMarch 31, 2026December 31, 2025
Carrying AmountFair ValueCarrying AmountFair Value
Liabilities:
Senior Notes to third parties1$72,247 $67,093 $74,575 $70,517 
Senior Notes to third parties (EUR-denominated)28,284 8,060 5,551 5,460 
Senior Notes to affiliates2— — 1,498 1,500 
Senior Secured Notes to third parties1748 738 844 835 
ABS Notes to third parties21,994 2,003 1,995 2,017 
Borrowings related to ECA Facilities and MRFA22,774 2,828 1,819 1,876 
v3.26.1
Debt (Tables)
 3 Months Ended
Mar. 31, 2026
Debt Disclosure [Abstract]  
Schedule of Debt Balances and Activity
The following table sets forth the debt balances and activity as of, and for the three months ended, March 31, 2026:
(in millions)December 31,
2025
Proceeds from Issuances and Borrowings (1)
Note Redemptions (1)
Repayments
Reclassifications (1)
Other (2)
March 31,
2026
Short-term debt$5,135 $— $(3,300)$(135)$538 $— $2,238 
Long-term debt79,649 6,393 (1,497)— (538)(198)83,809 
Total debt to third parties84,784 6,393 (4,797)(135)— (198)86,047 
Long-term debt to affiliates1,498 — (1,498)— — — — 
Total debt$86,282 $6,393 $(6,295)$(135)$— $(198)$86,047 
(1)Issuances and borrowings, note redemptions and reclassifications are recorded net of accrued or paid issuance costs and discounts.
(2)Other includes the amortization of premiums, discounts, debt issuance costs and consent fees, and the impact from changes in foreign currency exchange rates.
During the three months ended March 31, 2026, we issued and borrowed the following debt:
(in millions)Principal IssuancesDiscounts and Issuance CostsNet Proceeds from Issuance of DebtIssue Date
5.000% Senior Notes due 2036
$1,150 $(8)$1,142 January 12, 2026
5.850% Senior Notes due 2056
850 (8)842 January 12, 2026
3.200% Senior Notes due 2032 (EUR-denominated)
881 (5)876 February 19, 2026
3.625% Senior Notes due 2035 (EUR-denominated)
881 (5)876 February 19, 2026
3.900% Senior Notes due 2038 (EUR-denominated)
1,175 (12)1,163 February 19, 2026
Total of Senior Notes issued4,937 (38)4,899 
4.250% Class A Senior ABS Notes due 2030
500 (2)498 March 20, 2026
Total of ABS Notes issued500 (2)498 
4.557% MRFA due 2027
1,000 (4)996 February 5, 2026
Total borrowings1,000 (4)996 
Total issuances and borrowings$6,437 $(44)$6,393 

Credit Facilities

On January 5, 2026, we entered into a Second Amended and Restated Credit Agreement (the “January 2026 Credit Agreement”) with certain financial institutions named therein. The January 2026 Credit Agreement amends and restates in its entirety the Amended and Restated Credit Agreement, dated as of October 17, 2022, and provides for a $10.0 billion revolving credit facility, including a letter of credit sub-facility of up to $1.5 billion and a swingline loan sub-facility of up to $500 million. Commitments under the January 2026 Credit Agreement will mature on January 5, 2031, except as otherwise extended or replaced. Borrowings under the January 2026 Credit Agreement will bear interest based upon the applicable benchmark rate, depending on the type of loan and, in some cases, at our election, plus a margin that is determined by reference to the credit rating of T-Mobile USA’s senior unsecured long-term debt. The January 2026 Credit Agreement contains customary representations, warranties and covenants, including a financial maintenance covenant of 4.5x with respect to T-Mobile USA, Inc.’s Leverage Ratio (as defined therein). As of March 31, 2026, we did not have an outstanding balance under this facility.
Schedule of Repayments
During the three months ended March 31, 2026, we made the following redemptions and repayments:
(in millions)Principal Amount
Write-off of Issuance Cost and Consent Fees (1)
Redemption or Repayment DateRedemption Price
4.750% Senior Notes due 2028
$1,500 $3 February 1, 2026100 %
4.750% Senior Notes to affiliates due 2028
1,500 2 February 1, 2026100 %
1.500% Senior Notes due 2026
1,000 — February 15, 2026N/A
2.250% Senior Notes due 2026
1,800 — February 15, 2026N/A
5.050% Class A Senior ABS Notes due 2029
500 — March 20, 2026100 %
Total Redemptions$6,300 $5 
ECA Facility due March 2036$43 $— VariousN/A
5.152% Series 2018-1 A-2 Notes due 2028
92 — VariousN/A
Total Repayments$135 $— 
(1)Write-off of issuance costs and consent fees are included in Other expense, net on our Condensed Consolidated Statements of Comprehensive Income. Write-off of issuance costs and consent fees are included in Other, net within Net cash provided by operating activities on our Condensed Consolidated Statements of Cash Flows.
Schedule of Maturities of ABS Notes
The expected maturities of our ABS Notes as of March 31, 2026, were as follows:
(in millions)Expected Maturities
2026$136 
20271,008 
2028758 
202998 
Total$2,000 
Schedule of Variable Interest Entities
The following table summarizes the carrying amounts and classification of liabilities included on our Condensed Consolidated Balance Sheets with respect to the Service BRE:
(in millions)March 31,
2026		December 31,
2025
Other current liabilities$287 $306 
The following table summarizes the carrying amounts and classification of assets and liabilities included on our Condensed Consolidated Balance Sheets with respect to the ABS Entities:
(in millions)March 31,
2026		December 31,
2025
Assets
Equipment installment plan receivables, net$1,761 $1,865 
Equipment installment plan receivables due after one year, net646 543 
Other current assets222 232 
Liabilities
Accounts payable and accrued liabilities$2 $3 
Short-term debt284 594 
Long-term debt1,709 1,401 
v3.26.1
Tower Obligations (Tables)
 3 Months Ended
Mar. 31, 2026
Leases [Abstract]  
Schedule of Impacts to Consolidated Balance Sheets
The following table summarizes the balances associated with both of the tower arrangements on our Condensed Consolidated Balance Sheets:
(in millions)March 31,
2026		December 31,
2025
Property and equipment, net$1,886 $1,922 
Tower obligations3,496 3,532 
Other long-term liabilities554 554 
v3.26.1
Revenue from Contracts with Customers (Tables)
 3 Months Ended
Mar. 31, 2026
Revenue from Contract with Customer [Abstract]  
Schedule of Contract Liability and Receivable Balances
The contract asset and contract liability balances from contracts with customers as of March 31, 2026 and December 31, 2025, were as follows:
(in millions)Contract
Assets		Contract
Liabilities
Balance as of December 31, 2025$1,307 $1,653 
Balance as of March 31, 20261,368 1,568 
Change$61 $(85)
Revenues for the three months ended March 31, 2026 and 2025, include the following:
Three Months Ended March 31,
(in millions)20262025
Amounts included in the beginning of year contract liability balance$1,060 $903 
v3.26.1
Segment Reporting (Tables)
 3 Months Ended
Mar. 31, 2026
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment
The following table provides the operating financial results of our Wireless segment:
Three Months Ended March 31,
(in millions)20262025
Total revenues$23,107 $20,886 
Less: Significant and other segment expenses
Cost of equipment sales5,488 4,798 
Employee expenses 2,134 1,909 
Lease expense1,582 1,207 
Advertising expense901 812 
Bad debt expense426 323 
Other segment items (1)
4,262 3,839 
Depreciation and amortization3,817 3,198 
Interest expense, net1,031 916 
Other expense, net132 46 
Income tax expense830 885 
Segment net income$2,504 $2,953 
(1)Other segment items included in Segment net income primarily includes certain third-party commissions, external labor and services and backhaul expenses.
v3.26.1
Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 2026
Earnings Per Share [Abstract]  
Schedule of Computation of Basic and Diluted Earnings Per Share
The computation of basic and diluted earnings per share was as follows:
Three Months Ended March 31,
(in millions, except shares and per share amounts)20262025
Net income$2,504 $2,953 
Weighted-average shares outstanding – basic (1)
1,100,174,423 1,140,537,935 
Effect of dilutive securities:
Outstanding stock options and unvested stock awards (1)
1,878,823 4,117,362 
Weighted-average shares outstanding – diluted1,102,053,246 1,144,655,297 
Earnings per share – basic$2.28 $2.59 
Earnings per share – diluted$2.27 $2.58 
Potentially dilutive securities:
Outstanding stock options and unvested stock awards2,193,273 961,773 
Ka’ena Acquisition earnout (2)
— 979,153 
(1)     For the three months ended March 31, 2026, the weighted-average number of shares issuable related to the Ka’ena Acquisition earnout (“Ka’ena Shares”) are included in our calculations of basic and diluted weighted-average shares outstanding based on the 20 trading day volume-weighted average price as of March 31, 2026, as further described below.
(2)     Represents the Ka’ena Shares that were contingently issuable based on achievement of specified performance indicators from the Ka’ena Acquisition closing date of May 1, 2024, based on the maximum number of shares contingently issuable for the earnout and 20 trading day volume-weighted average price as of March 31, 2025.
v3.26.1
Restructuring Costs (Tables)
 3 Months Ended
Mar. 31, 2026
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring Plan Expenses Incurred
The following table summarizes the expenses incurred in connection with our UScellular Acquisition restructuring initiatives:
(in millions)Three Months Ended March 31, 2026Incurred to Date
Contract termination costs$41 $73 
Severance costs26 89 
Network decommissioning18 34 
Total restructuring plan expenses$85 $196 
The following table summarizes the expenses incurred in connection with our Network Restructuring Initiative:
(in millions)Three Months Ended March 31, 2026Incurred to Date
Contract termination costs$27 $32 
Network decommissioning38 102 
Total restructuring plan expenses$65 $134 
Schedule of Activity Related to Expenses Incurred and Cash Payments Made
The changes in the liabilities associated with our UScellular Acquisition restructuring initiatives, including expenses incurred and cash payments, are as follows:
(in millions)December 31,
2025		Expenses IncurredCash PaymentsMarch 31,
2026
Contract termination costs$31 $41 $(32)$40 
Severance costs59 26 (8)77 
Network decommissioning1 18 (15)4 
Total$91 $85 $(55)$121 
The changes in the liabilities associated with our Network Restructuring Initiative, including expenses incurred and cash payments, are as follows:
(in millions)December 31,
2025		Expenses IncurredCash PaymentsMarch 31,
2026
Contract termination costs$— $27 $(14)$13 
Network decommissioning1 38 (12)27 
Total$1 $65 $(26)$40 
The following table summarizes the expenses incurred in connection with our 2025-2026 Workforce Transformation initiative:
(in millions)Three Months Ended March 31, 2026Incurred to Date
Severance costs$141 $531 
The changes in the liabilities associated with our 2025-2026 Workforce Transformation initiative, including expenses incurred and cash payments, are as follows:
(in millions)December 31,
2025		Expenses IncurredCash PaymentsMarch 31,
2026
Severance costs$374 $141 $(123)$392 
v3.26.1
Additional Financial Information (Tables)
 3 Months Ended
Mar. 31, 2026
Supplemental Financial Statement Elements [Abstract]  
Schedule of Accounts Payable and Accrued Liabilities
Accounts payable and accrued liabilities are summarized as follows:
(in millions)March 31,
2026		December 31,
2025
Accounts payable$4,573 $5,219 
Payroll and related benefits1,316 1,709 
Property and other taxes, including payroll1,697 1,601 
Accrued interest1,073 1,025 
Other accrued liabilities863 726 
Accounts payable and accrued liabilities$9,522 $10,280 
Schedule of Supplemental Consolidated Statements of Cash Flows Information
The following table summarizes T-Mobile’s supplemental cash flow information:
Three Months Ended March 31,
(in millions)20262025
Interest payments, net of amounts capitalized$1,054 $934 
Operating lease payments1,537 1,214 
Income tax payments, net of refunds received10 10 
Non-cash investing and financing activities
Change in accounts payable and accrued liabilities for purchases of property and equipment$(357)$(463)
Operating lease right-of-use assets obtained in exchange for lease obligations525 481 
Financing lease right-of-use assets obtained in exchange for lease obligations222 248 
Schedule of Cash and Cash Equivalents, Including Restricted Cash
Cash and cash equivalents, including restricted cash, presented on our Condensed Consolidated Statements of Cash Flows were included on our Condensed Consolidated Balance Sheets as follows:
(in millions)March 31,
2026		December 31,
2025
Cash and cash equivalents$3,520 $5,598 
Restricted cash (included in Other current assets)301 296 
Restricted cash (included in Other assets)88 82 
Cash and cash equivalents, including restricted cash$3,909 $5,976 
Schedule of Restricted Cash
Cash and cash equivalents, including restricted cash, presented on our Condensed Consolidated Statements of Cash Flows were included on our Condensed Consolidated Balance Sheets as follows:
(in millions)March 31,
2026		December 31,
2025
Cash and cash equivalents$3,520 $5,598 
Restricted cash (included in Other current assets)301 296 
Restricted cash (included in Other assets)88 82 
Cash and cash equivalents, including restricted cash$3,909 $5,976 
v3.26.1
Business Combinations - Narrative (Details)
$ in Millions
Aug. 05, 2025
USD ($)
Aug. 01, 2025
USD ($)
Jul. 22, 2025
USD ($)
agreement
Jun. 30, 2025
USD ($)
Mar. 03, 2025
USD ($)
Feb. 18, 2025
USD ($)
Feb. 03, 2025
USD ($)
May 24, 2024
USD ($)
Mar. 09, 2023
USD ($)
Mar. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Dec. 20, 2024
Business Combination [Line Items]                        
Goodwill                   $ 13,664 $ 13,678  
Ka Ena Corporation | Merger And Unit Purchase Agreement                        
Business Combination [Line Items]                        
Business acquisition, outstanding (percent)                 100.00%      
Total consideration transferred       $ 1,350         $ 1,350      
Business acquisition, cash acquired (percent)                 39.00%      
Business acquisition, common shares acquired (percent)                 61.00%      
Ka Ena Corporation | Merger and Unit Purchase Agreement, Amendment No. 1                        
Business Combination [Line Items]                        
Additional upfront payment to be paid       420                
Business combination, potential earnout payment       251                
Business combination, potential earnout payment for services       $ 169                
Liabilities for deferred consideration                   244 242  
Liabilities for post-acquisition                   $ 164 $ 157  
UScellular Wireless Assets Operations                        
Business Combination [Line Items]                        
Short-term debt assumed for financing of property and equipment $ 1,700                      
Short-term debt assumed for financing of property and equipment at fair value   $ 1,700                    
Goodwill   209                    
Goodwill expected to be tax deductible   32                    
UScellular Wireless Assets Operations | Purchase Agreement                        
Business Combination [Line Items]                        
Payments for asset acquisition               $ 4,400        
Asset acquisition, maximum transferred liabilities incurred               $ 2,000        
Business acquisition, cash transferred   $ 2,800                    
Farmers Cellular Telephone Company Acquisition | Purchase Agreement                        
Business Combination [Line Items]                        
Number of separate asset purchase agreements | agreement     3                  
Business acquisition, cash transferred     $ 175                  
Vistar Media Inc.                        
Business Combination [Line Items]                        
Business acquisition, outstanding (percent)                       100.00%
Total consideration transferred             $ 618          
Goodwill             341          
Total consideration transferred, including settlements of preexisting relationships             621          
Total liabilities assumed             $ 190          
Blis Holdco Limited                        
Business Combination [Line Items]                        
Business acquisition, outstanding (percent)           100.00%            
Total consideration transferred           $ 174            
Business acquisition, cash transferred         $ 180              
Goodwill           103            
Total assets acquired, including goodwill           263            
Total liabilities assumed           $ 89            
v3.26.1
Business Combinations - Schedule of Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($)
$ in Millions
Feb. 03, 2025
Mar. 31, 2026
Dec. 31, 2025
Business Combination [Line Items]      
Goodwill   $ 13,664 $ 13,678
Vistar Media Inc.      
Business Combination [Line Items]      
Cash and cash equivalents $ 42    
Accounts receivable 157    
Prepaid expense and other current assets 2    
Property and equipment 1    
Operating lease right-of-use assets 1    
Goodwill 341    
Other intangible assets 264    
Total assets acquired 808    
Accounts payable and accrued liabilities 128    
Deferred revenue 1    
Deferred tax liabilities 59    
Operating lease liabilities 2    
Total liabilities assumed 190    
Total consideration transferred $ 618    
v3.26.1
Receivables and Related Allowance for Credit Losses - Narrative (Details)
 3 Months Ended 12 Months Ended
Mar. 31, 2026
class
segment
Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]    
Portfolio segments | segment 2  
Customer classes | class 2  
EIP Receivables Allowance    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Weighted average effective imputed interest rate 10.40% 10.30%
v3.26.1
Receivables and Related Allowance for Credit Losses - Schedule of Equipment Installment Plan Receivables (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]    
EIP receivables, gross $ 8,453 $ 8,626
Unamortized imputed discount (560) (566)
EIP receivables, net of unamortized imputed discount 7,893 8,060
Allowance for credit losses (405) (380)
EIP receivables, net of allowance for credit losses and imputed discount 7,488 7,680
Equipment installment plan receivables, net of allowance for credit losses and imputed discount    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
EIP receivables, net of allowance for credit losses and imputed discount 4,935 4,997
Equipment installment plan receivables due after one year, net of allowance for credit losses and imputed discount    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
EIP receivables, net of allowance for credit losses and imputed discount $ 2,553 $ 2,683
v3.26.1
Receivables and Related Allowance for Credit Losses - Schedule of Equipment Installment Plan Receivables by Credit Category (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]    
EIP receivables, net of unamortized imputed discount $ 7,893 $ 8,060
Prime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2026 1,504  
Originated in 2025 3,923  
Originated prior to 2025 1,044  
EIP receivables, net of unamortized imputed discount 6,471  
Subprime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2026 358  
Originated in 2025 852  
Originated prior to 2025 212  
EIP receivables, net of unamortized imputed discount 1,422  
Current - 30 days past due    
Financing Receivable, Credit Quality Indicator [Line Items]    
EIP receivables, net of unamortized imputed discount 7,710  
Current - 30 days past due | Prime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2026 1,489  
Originated in 2025 3,864  
Originated prior to 2025 1,026  
EIP receivables, net of unamortized imputed discount 6,379  
Current - 30 days past due | Subprime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2026 347  
Originated in 2025 789  
Originated prior to 2025 195  
EIP receivables, net of unamortized imputed discount 1,331  
31 - 60 days past due    
Financing Receivable, Credit Quality Indicator [Line Items]    
EIP receivables, net of unamortized imputed discount 81  
31 - 60 days past due | Prime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2026 13  
Originated in 2025 24  
Originated prior to 2025 6  
EIP receivables, net of unamortized imputed discount 43  
31 - 60 days past due | Subprime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2026 10  
Originated in 2025 23  
Originated prior to 2025 5  
EIP receivables, net of unamortized imputed discount 38  
61 - 90 days past due    
Financing Receivable, Credit Quality Indicator [Line Items]    
EIP receivables, net of unamortized imputed discount 52  
61 - 90 days past due | Prime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2026 2  
Originated in 2025 19  
Originated prior to 2025 5  
EIP receivables, net of unamortized imputed discount 26  
61 - 90 days past due | Subprime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2026 1  
Originated in 2025 20  
Originated prior to 2025 5  
EIP receivables, net of unamortized imputed discount 26  
More than 90 days past due    
Financing Receivable, Credit Quality Indicator [Line Items]    
EIP receivables, net of unamortized imputed discount 50  
More than 90 days past due | Prime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2026 0  
Originated in 2025 16  
Originated prior to 2025 7  
EIP receivables, net of unamortized imputed discount 23  
More than 90 days past due | Subprime    
Financing Receivable, Credit Quality Indicator [Line Items]    
Originated in 2026 0  
Originated in 2025 20  
Originated prior to 2025 7  
EIP receivables, net of unamortized imputed discount $ 27  
v3.26.1
Receivables and Related Allowance for Credit Losses - Schedule of Write Offs Net of Recoveries (Details)
$ in Millions
 3 Months Ended
Mar. 31, 2026
USD ($)
Write-offs  
Originated in 2026 $ 3
Originated in 2025 166
Originated prior to 2025 48
Total $ 217
v3.26.1
Receivables and Related Allowance for Credit Losses - Schedule of Unamortized Imputed Discount and Allowance for Credit Losses for Equipment Installment Plan Receivables (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Financing Receivable, Allowance for Credit Loss [Roll Forward]    
Allowance for credit losses and imputed discount, beginning of period $ 1,172 $ 990
Bad debt expense 426 323
Write-offs (410) (324)
Change in imputed discount on short-term and long-term EIP receivables 42 36
Impact on the imputed discount from sales of EIP receivables (48) (42)
Allowance for credit losses and imputed discount, end of period 1,182 983
Accounts Receivable Allowance    
Financing Receivable, Allowance for Credit Loss [Roll Forward]    
Allowance for credit losses and imputed discount, beginning of period 226 176
Bad debt expense 184 165
Write-offs (193) (166)
Allowance for credit losses and imputed discount, end of period 217 175
EIP Receivables Allowance    
Financing Receivable, Allowance for Credit Loss [Roll Forward]    
Allowance for credit losses and imputed discount, beginning of period 946 814
Bad debt expense 242 158
Write-offs (217) (158)
Change in imputed discount on short-term and long-term EIP receivables 42 36
Impact on the imputed discount from sales of EIP receivables (48) (42)
Allowance for credit losses and imputed discount, end of period $ 965 $ 808
v3.26.1
Sales of Certain Receivables - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Variable Interest Entity [Line Items]      
Losses from sales of receivables $ 20 $ 22  
Variable Interest Entity, Primary Beneficiary | Collateral Pledged | Service Receivable Sale Arrangement      
Variable Interest Entity [Line Items]      
Gross receivables 284   $ 266
EIP Securitization Arrangement      
Variable Interest Entity [Line Items]      
Revolving receivables facility, maximum borrowing capacity 1,300   1,300
Factoring Arrangement | Variable Interest Entity, Not Primary Beneficiary      
Variable Interest Entity [Line Items]      
Revolving receivables facility, outstanding borrowings 775   775
Factoring and EIP Securitization Arrangement | Variable Interest Entity, Primary Beneficiary      
Variable Interest Entity [Line Items]      
Losses from sales of receivables 20 $ 22  
Factoring and EIP Securitization Arrangement | Variable Interest Entity, Primary Beneficiary | Collateral Pledged | EIP Sale Arrangement      
Variable Interest Entity [Line Items]      
Gross EIP receivables 579   535
Factoring and EIP Securitization Arrangement | Level 3 | Carrying Amount | Variable Interest Entity, Primary Beneficiary      
Variable Interest Entity [Line Items]      
Carrying amounts of deferred purchase price assets $ 132   $ 130
v3.26.1
Sales of Certain Receivables - Schedule of Variable Interest Entities - EIP (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Variable Interest Entity [Line Items]    
Other current liabilities $ 2,322 $ 2,575
EIP Securitization Arrangement    
Variable Interest Entity [Line Items]    
Other current liabilities 92 90
Other long-term liabilities $ 13 $ 13
v3.26.1
Sales of Certain Receivables - Schedule of Variable Interest Entities (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Variable Interest Entity [Line Items]    
Other current liabilities $ 2,322 $ 2,575
Variable Interest Entity, Not Primary Beneficiary | Factoring Arrangement    
Variable Interest Entity [Line Items]    
Other current liabilities $ 287 $ 306
v3.26.1
Sales of Certain Receivables - Schedule of Factoring Arrangement (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]    
Other current liabilities $ 2,322 $ 2,575
Other long-term liabilities 3,993 3,794
Factoring and EIP Securitization Arrangement | Variable Interest Entity, Primary Beneficiary    
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]    
Derecognized net service accounts receivable and EIP receivables 1,669 1,651
Other current liabilities 379 397
Other long-term liabilities 13 13
Net cash proceeds since inception 1,352 1,372
Of which:    
Change in net cash proceeds during the year-to-date period (20) (96)
Net cash proceeds funded by reinvested collections 1,372 1,468
Factoring and EIP Securitization Arrangement | Variable Interest Entity, Primary Beneficiary | Other current liabilities - of which, recourse guarantee    
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]    
Carrying amounts of deferred purchase price assets 119 117
Factoring and EIP Securitization Arrangement | Variable Interest Entity, Primary Beneficiary | Other long-term liabilities - of which, recourse guarantee    
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]    
Carrying amounts of deferred purchase price assets $ 13 $ 13
v3.26.1
Spectrum License Transactions - Schedule of Spectrum License Activity (Details) - Licensing Agreements
$ in Millions
 3 Months Ended
Mar. 31, 2026
USD ($)
Indefinite-lived Intangible Assets [Roll Forward]  
Spectrum licenses, beginning of year $ 98,032
Spectrum license acquisitions 39
Spectrum licenses transferred to held for sale (507)
Spectrum licenses, end of period $ 97,564
v3.26.1
Spectrum License Transactions - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended
May 30, 2025
Jan. 13, 2025
Sep. 12, 2023
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2026
Dec. 31, 2025
Indefinite-lived Intangible Assets [Line Items]              
Spectrum licenses       $ 97,564     $ 98,032
Licensing Agreements | Spectrum Exchange Transactions              
Indefinite-lived Intangible Assets [Line Items]              
Spectrum licenses held-for-sale       507     $ 3
Gain on spectrum exchange transactions       2 $ 12    
Licensing Agreements | Non-Cash Spectrum License Acquisitions | Spectrum Exchange Transactions              
Indefinite-lived Intangible Assets [Line Items]              
Consideration transferred, exchange of licenses       5 $ 172    
Licensing Agreements | Comcast Corporation              
Indefinite-lived Intangible Assets [Line Items]              
License purchase agreement, minimum period before termination allowed     2 years        
Licensing Agreements | Comcast Corporation | Forecast | Spectrum Licenses              
Indefinite-lived Intangible Assets [Line Items]              
Spectrum licenses           $ 45  
Licensing Agreements | Grain Management, LLC | Spectrum Licenses              
Indefinite-lived Intangible Assets [Line Items]              
Total cash consideration $ 2,900            
Spectrum licenses       3,600      
Increase our cash tax liability $ 850            
Licensing Agreements | Grain Management, LLC | Spectrum Licenses | Other current assets - of which, deferred purchase price              
Indefinite-lived Intangible Assets [Line Items]              
Spectrum licenses held-for-sale       2,900      
Licensing Agreements | Grain Management, LLC | Spectrum Licenses | Other Assets              
Indefinite-lived Intangible Assets [Line Items]              
Spectrum licenses held-for-sale       $ 690      
Minimum | Licensing Agreements | Comcast Corporation              
Indefinite-lived Intangible Assets [Line Items]              
Total cash consideration   $ 1,200 $ 1,200        
Minimum | Optional Sale Licenses | Comcast Corporation              
Indefinite-lived Intangible Assets [Line Items]              
Total cash consideration     2,100        
Maximum | Licensing Agreements | Comcast Corporation              
Indefinite-lived Intangible Assets [Line Items]              
Total cash consideration   $ 3,400 $ 3,300        
v3.26.1
Fair Value Measurements - Narrative (Details)
$ in Millions, € in Billions
 3 Months Ended
Mar. 31, 2026
USD ($)
Mar. 31, 2025
USD ($)
Mar. 31, 2026
EUR (€)
Dec. 31, 2025
USD ($)
Derivative [Line Items]        
Accumulated other comprehensive loss $ 835     $ 848
Interest Expense        
Derivative [Line Items]        
Amount amortized from AOCI into interest expense 67 $ 62    
Amount expected to be amortized from AOCI into interest expense over next 12 months 279      
Cross-Currency Swap        
Derivative [Line Items]        
Other finance liabilities | €     € 7.3  
Amount amortized from AOCI into interest expense 183 $ (218)    
Interest Rate Contract        
Derivative [Line Items]        
Accumulated other comprehensive loss $ 721     $ 771
v3.26.1
Fair Value Measurements - Schedule of Pretax Cross Currency Swaps (Details) - Cross-Currency Swap - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Pre-tax transaction gain (loss) on remeasurement of EUR-denominated debt $ 183 $ (218)
Amount recognized in Other expense, net reclassified from Accumulated other comprehensive loss (183) 218
Losses associated with the change in fair value of cross-currency swaps recognized in Accumulated other comprehensive loss (231) (20)
Reclassification out of Accumulated Other Comprehensive Income    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Amount recognized in Accumulated other comprehensive loss reclassified to Other expense, net $ 183 $ (218)
v3.26.1
Fair Value Measurements - Schedule of Carrying Values and Fair Values of Short-Term and Long-term Debt (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Carrying Amount | Senior Notes | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt $ 72,247 $ 74,575
Carrying Amount | Senior Notes | Third Party (EUR-denominated) | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 8,284 5,551
Carrying Amount | Senior Notes | Related Party | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 0 1,498
Carrying Amount | Senior Secured Notes | Third Party | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 748 844
Carrying Amount | ABS Notes | Third Party | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 1,994 1,995
Carrying Amount | ECA Facility | Third Party | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 2,774 1,819
Fair Value | Senior Notes | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 67,093 70,517
Fair Value | Senior Notes | Third Party (EUR-denominated) | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 8,060 5,460
Fair Value | Senior Notes | Related Party | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 0 1,500
Fair Value | Senior Secured Notes | Third Party | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 738 835
Fair Value | ABS Notes | Third Party | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 2,003 2,017
Fair Value | ECA Facility | Third Party | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt $ 2,828 $ 1,876
v3.26.1
Debt - Schedule of Debt Balances and Activity (Details) - USD ($)
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Debt Balances and Activity [Roll Forward]    
Long-term debt, proceeds from issuances and borrowings $ 6,393,000,000  
Note Redemptions (135,000,000)  
Repayments of long-term debt (6,435,000,000) $ (479,000,000)
Total Debt    
Debt Balances and Activity [Roll Forward]    
Total debt, beginning balance 86,282,000,000  
Proceeds from issuances and borrowings 6,393,000,000  
Note Redemptions (6,295,000,000)  
Repayments (135,000,000)  
Reclassifications 0  
Other (198,000,000)  
Total debt, ending balance 86,047,000,000  
Third Party    
Debt Balances and Activity [Roll Forward]    
Short-term debt, proceeds from issuances and borrowings 0  
Long-term debt, proceeds from issuances and borrowings 6,393,000,000  
Repayments of short-term debt (135,000,000)  
Repayments of long-term debt 0  
Third Party | Short-term debt    
Debt Balances and Activity [Roll Forward]    
Other 0  
Third Party | Long-term debt    
Debt Balances and Activity [Roll Forward]    
Other (198,000,000)  
Third Party | Total Debt    
Debt Balances and Activity [Roll Forward]    
Total debt, beginning balance 84,784,000,000  
Proceeds from issuances and borrowings 6,393,000,000  
Note Redemptions (4,797,000,000)  
Repayments (135,000,000)  
Reclassifications 0  
Other (198,000,000)  
Total debt, ending balance 86,047,000,000  
Affiliates    
Debt Balances and Activity [Roll Forward]    
Proceeds from issuances and borrowings 0  
Repayments 0  
Affiliates | Long-term debt    
Debt Balances and Activity [Roll Forward]    
Other 0  
Short-term debt | Third Party    
Debt Balances and Activity [Roll Forward]    
Reclassifications 538,000,000  
Long-term debt | Third Party    
Debt Balances and Activity [Roll Forward]    
Reclassifications (538,000,000)  
Long-term debt | Affiliates    
Debt Balances and Activity [Roll Forward]    
Reclassifications 0  
Short-term debt | Third Party    
Debt Balances and Activity [Roll Forward]    
Short-term debt, beginning balance 5,135,000,000  
Note Redemptions (3,300,000,000)  
Short-term debt, ending balance 2,238,000,000  
Long-term debt | Third Party    
Debt Balances and Activity [Roll Forward]    
Long-term debt, beginning balance 79,649,000,000  
Note Redemptions (1,497,000,000)  
Long-term debt, ending balance 83,809,000,000  
Long-term debt | Affiliates    
Debt Balances and Activity [Roll Forward]    
Total debt, beginning balance 1,498,000,000  
Note Redemptions (1,498,000,000)  
Total debt, ending balance $ 0  
v3.26.1
Debt - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 20, 2026
Mar. 31, 2026
Mar. 31, 2025
Feb. 05, 2026
Debt Instrument [Line Items]        
Effective interest rate   4.20% 4.00%  
Weighted-average debt outstanding during period   $ 86,700 $ 80,800  
Principal Issuances   6,437    
Net Proceeds from Issuance of Long-Term Debt   6,393    
Debt instrument, collateral amount   195    
Notes Payable, Other Payables        
Debt Instrument [Line Items]        
Principal Issuances   1,000   $ 1,000
ABS Notes        
Debt Instrument [Line Items]        
Principal Issuances   500    
Net Proceeds from Issuance of Long-Term Debt   498    
Proceeds from loan facility   2,000    
Gross EIP receivables   $ 2,600    
ABS Notes | 4.250% Class A Senior ABS Notes due 2030        
Debt Instrument [Line Items]        
Principal Issuances $ 500      
Interest rate, stated percentage 4.25%      
Net Proceeds from Issuance of Long-Term Debt $ 498      
v3.26.1
Debt - Schedule of Issuances and Borrowings (Details) - USD ($)
 3 Months Ended
Mar. 20, 2026
Feb. 19, 2026
Feb. 05, 2026
Jan. 12, 2026
Mar. 31, 2026
Debt Instrument [Line Items]          
Principal Issuances         $ 6,437,000,000
Discounts and Issuance Costs         (44,000,000)
Net Proceeds from Issuance of Long-Term Debt         6,393,000,000
Revolving Credit Facility          
Debt Instrument [Line Items]          
Credit facility outstanding balance         0
Senior Notes          
Debt Instrument [Line Items]          
Principal Issuances         4,937,000,000
Discounts and Issuance Costs         (38,000,000)
Net Proceeds from Issuance of Long-Term Debt         4,899,000,000
ABS Notes          
Debt Instrument [Line Items]          
Principal Issuances         500,000,000
Discounts and Issuance Costs         (2,000,000)
Net Proceeds from Issuance of Long-Term Debt         498,000,000
Borrowings          
Debt Instrument [Line Items]          
Principal Issuances         1,000,000,000
Discounts and Issuance Costs         (4,000,000)
Net Proceeds from Issuance of Long-Term Debt         996,000,000
Line of Credit | Revolving Credit Facility          
Debt Instrument [Line Items]          
Financing commitment, amount         10,000,000,000.0
Line of Credit | Letter of Credit          
Debt Instrument [Line Items]          
Financing commitment, amount         1,500,000,000
Line of Credit | Bridge Loan          
Debt Instrument [Line Items]          
Financing commitment, amount         $ 500,000,000
5.000% Senior Notes due 2036 | Senior Notes          
Debt Instrument [Line Items]          
Interest rate, stated percentage       5.00%  
Principal Issuances       $ 1,150,000,000  
Discounts and Issuance Costs       (8,000,000)  
Net Proceeds from Issuance of Long-Term Debt       $ 1,142,000,000  
5.850% Senior Notes due 2056 | Senior Notes          
Debt Instrument [Line Items]          
Interest rate, stated percentage       5.85%  
Principal Issuances       $ 850,000,000  
Discounts and Issuance Costs       (8,000,000)  
Net Proceeds from Issuance of Long-Term Debt       $ 842,000,000  
3.200% Senior Notes due 2032 | Senior Notes          
Debt Instrument [Line Items]          
Interest rate, stated percentage   3.20%      
Principal Issuances   $ 881,000,000      
Discounts and Issuance Costs   (5,000,000)      
Net Proceeds from Issuance of Long-Term Debt   $ 876,000,000      
3.625% Senior Notes due 2035 | Senior Notes          
Debt Instrument [Line Items]          
Interest rate, stated percentage   3.625%      
Principal Issuances   $ 881,000,000      
Discounts and Issuance Costs   (5,000,000)      
Net Proceeds from Issuance of Long-Term Debt   $ 876,000,000      
3.900% Senior Notes due 2038 | Senior Notes          
Debt Instrument [Line Items]          
Interest rate, stated percentage   3.90%      
Principal Issuances   $ 1,175,000,000      
Discounts and Issuance Costs   (12,000,000)      
Net Proceeds from Issuance of Long-Term Debt   $ 1,163,000,000      
4.250% Class A Senior ABS Notes due 2030 | ABS Notes          
Debt Instrument [Line Items]          
Interest rate, stated percentage 4.25%        
Principal Issuances $ 500,000,000        
Discounts and Issuance Costs (2,000,000)        
Net Proceeds from Issuance of Long-Term Debt $ 498,000,000        
0.000% MRFA due 2027 | Borrowings          
Debt Instrument [Line Items]          
Interest rate, stated percentage     4.557%    
Principal Issuances     $ 1,000,000,000    
Discounts and Issuance Costs     (4,000,000)    
Net Proceeds from Issuance of Long-Term Debt     $ 996,000,000    
v3.26.1
Debt - Schedule of Repayments (Details)
 3 Months Ended
Mar. 31, 2026
USD ($)
Debt Instrument [Line Items]  
Principal Amount $ 135,000,000
Write-off of issuance cost and consent fees $ 0
4.750% Senior Notes due 2028 | Senior Notes  
Debt Instrument [Line Items]  
Interest rate, stated percentage 4.75%
Principal Amount $ 1,500,000,000
Write-off of issuance cost and consent fees $ 3,000,000
Redemption Price 100.00%
4.750% Senior Notes to affiliates due 2028 | Senior Notes  
Debt Instrument [Line Items]  
Interest rate, stated percentage 4.75%
Principal Amount $ 1,500,000,000
Write-off of issuance cost and consent fees $ 2,000,000
Redemption Price 100.00%
1.500% Senior Notes due 2026 | Senior Notes  
Debt Instrument [Line Items]  
Interest rate, stated percentage 1.50%
Principal Amount $ 1,000,000,000
Write-off of issuance cost and consent fees $ 0
2.250% Senior Notes due 2026 | Senior Notes  
Debt Instrument [Line Items]  
Interest rate, stated percentage 2.25%
Principal Amount $ 1,800,000,000
Write-off of issuance cost and consent fees $ 0
Redemption Price 100.00%
5.050% Class A Senior ABS Notes due 2029 | Senior Notes  
Debt Instrument [Line Items]  
Interest rate, stated percentage 5.05%
Principal Amount $ 500,000,000
Write-off of issuance cost and consent fees 0
Total Redemptions  
Debt Instrument [Line Items]  
Principal amount redeemed 6,300,000,000
Write-off of issuance cost and consent fees 5,000,000
ECA Facility due March 2036 | Loans Payable  
Debt Instrument [Line Items]  
Principal Amount 43,000,000
Write-off of issuance cost and consent fees $ 0
5.152% Series 2018-1 A-2 Notes due 2028 | Senior Notes  
Debt Instrument [Line Items]  
Interest rate, stated percentage 5.152%
Principal Amount $ 92,000,000
Write-off of issuance cost and consent fees $ 0
v3.26.1
Debt - Schedule of Maturities of ABS Notes (Details) - ABS Notes
$ in Millions
Mar. 31, 2026
USD ($)
Debt Instrument [Line Items]  
2026 $ 136
2027 1,008
2028 758
2029 98
Total debt $ 2,000
v3.26.1
Debt - Schedule of Variable Interest Entities (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Equipment installment plan receivables, net $ 4,935 $ 4,997
Equipment installment plan receivables due after one year, net 2,553 2,683
Other current assets 5,403 5,372
Accounts payable and accrued liabilities 9,522 10,280
Short-term debt 2,238 5,135
Variable Interest Entity, Primary Beneficiary    
Debt Instrument [Line Items]    
Equipment installment plan receivables, net 1,761 1,865
Equipment installment plan receivables due after one year, net 646 543
Other current assets 222 232
Accounts payable and accrued liabilities 2 3
Short-term debt 284 594
Long-term debt $ 1,709 $ 1,401
v3.26.1
Tower Obligations - Narrative (Details)
$ in Millions
 12 Months Ended
Jan. 03, 2022
USD ($)
Apr. 01, 2020
USD ($)
tower_site
renewal_option
Dec. 31, 2012
USD ($)
tower_site
Mar. 31, 2026
USD ($)
tower_site
Sale Leaseback Transaction [Line Items]        
Number of renewal options | renewal_option   0    
Tower obligation payments, due next year       $ 391
Tower obligation payments, due within two and three years       816
Tower obligation payment, due within four and five years       869
Tower obligation payments due thereafter       $ 3,100
Tower Transaction        
Sale Leaseback Transaction [Line Items]        
Lessee leasing arrangements, operating leases, term of contract (years) 12 years      
Sale leaseback transaction, fixed-price purchase options     $ 2,000  
Interest rate on tower obligations 11.60%      
Tower Transaction | Tower        
Sale Leaseback Transaction [Line Items]        
Useful life (years)       20 years
Tower Transaction | Minimum        
Sale Leaseback Transaction [Line Items]        
Lessee leasing arrangements, operating leases, term of contract (years)     23 years  
Tower Transaction | Maximum        
Sale Leaseback Transaction [Line Items]        
Lessee leasing arrangements, operating leases, term of contract (years)     37 years  
CCI Tower Lease Arrangement | Crown Castle International Corp.        
Sale Leaseback Transaction [Line Items]        
Interest rate on tower obligations 5.30%      
Crown Castle International Corp.        
Sale Leaseback Transaction [Line Items]        
Increase to deferred tax liabilities $ 1,200      
Managed sites | tower_site       900
Lease liability       $ 239
Crown Castle International Corp. | Tower Transaction        
Sale Leaseback Transaction [Line Items]        
Property subject to failed sale leaseback transaction, number of units | tower_site   6,400 6,200  
Remaining term of lease   17 years    
Fixed-price purchase option on leased or subleased sites   $ 2,300    
Fixed-price purchase option on lease or subleased sites, exercisable period   1 year    
Days prior to expiration of agreement   120 days    
v3.26.1
Tower Obligations - Schedule of Impacts to Consolidated Balance Sheets (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Property and equipment, net    
Sale Leaseback Transaction [Line Items]    
Sale-leasebacks $ 1,886 $ 1,922
Tower obligations    
Sale Leaseback Transaction [Line Items]    
Sale-leasebacks 3,496 3,532
Other long-term liabilities    
Sale Leaseback Transaction [Line Items]    
Sale-leasebacks $ 554 $ 554
v3.26.1
Revenue from Contracts with Customers - Narrative (Details)
 3 Months Ended
Mar. 31, 2026
USD ($)
customer_category
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Disaggregation of Revenue [Line Items]      
Number of customer categories | customer_category 2    
Current portion of contract assets $ 1,000,000,000.0   $ 920,000,000
Deferred incremental costs to obtain contracts $ 2,000,000,000.0   $ 2,000,000,000.0
Average amortization period, deferred contract costs (in months) 24 months    
Amortization of deferred costs $ 473,000,000 $ 485,000,000  
Impairment losses recognized on deferred contract cost assets $ 0 $ 0  
Minimum      
Disaggregation of Revenue [Line Items]      
Remaining contract duration (in years) 1 year    
Maximum      
Disaggregation of Revenue [Line Items]      
Remaining contract duration (in years) 6 years    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-04-01      
Disaggregation of Revenue [Line Items]      
Remaining performance obligation $ 986,000,000    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01      
Disaggregation of Revenue [Line Items]      
Remaining performance obligation 968,000,000    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01      
Disaggregation of Revenue [Line Items]      
Remaining performance obligation 2,200,000,000    
Postpaid revenues      
Disaggregation of Revenue [Line Items]      
Remaining performance obligation $ 2,800,000,000    
Remaining contract duration (in years) 24 months    
v3.26.1
Revenue from Contracts with Customers - Schedule of Contract Liability and Receivable Balances (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Revenue from Contract with Customer [Abstract]      
Contract Assets $ 1,368   $ 1,307
Contract Liabilities 1,568   $ 1,653
Change in contract assets included in other current assets 61    
Change in contracts liabilities included in deferred revenue (85)    
Amounts included in the beginning of year contract liability balance $ 1,060 $ 903  
v3.26.1
Revenue from Contracts with Customers - Remaining Performance Obligations (Details)
Mar. 31, 2026
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation, expected timing of satisfaction, period 9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation, expected timing of satisfaction, period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation, expected timing of satisfaction, period
v3.26.1
Segment Reporting (Details)
$ in Millions
 3 Months Ended
Mar. 31, 2026
USD ($)
segment
Mar. 31, 2025
USD ($)
Segment Reporting [Abstract]    
Number of operating segments | segment 1  
Number of reportable segments | segment 1  
Segment Reporting Information [Line Items]    
Total revenues $ 23,107 $ 20,886
Less: Significant and other segment expenses    
Bad debt expense 426 323
Interest expense, net 1,031 916
Other expense, net 132 46
Income tax expense 830 885
Net income 2,504 2,953
Equipment revenues    
Segment Reporting Information [Line Items]    
Total revenues 3,996 3,704
Less: Significant and other segment expenses    
Cost of equipment sales 5,488 4,798
Wireless    
Segment Reporting Information [Line Items]    
Total revenues 23,107 20,886
Less: Significant and other segment expenses    
Employee expenses 2,134 1,909
Lease expense 1,582 1,207
Advertising expense 901 812
Bad debt expense 426 323
Other segment items 4,262 3,839
Depreciation and amortization 3,817 3,198
Interest expense, net 1,031 916
Other expense, net 132 46
Income tax expense 830 885
Net income 2,504 2,953
Wireless | Equipment revenues    
Less: Significant and other segment expenses    
Cost of equipment sales $ 5,488 $ 4,798
v3.26.1
Stockholder Return Programs (Details) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended
Jun. 11, 2026
Mar. 12, 2026
Apr. 24, 2026
Mar. 31, 2026
Dec. 31, 2025
Mar. 31, 2025
Apr. 27, 2026
Apr. 23, 2026
Dec. 11, 2025
Equity, Class of Treasury Stock [Line Items]                  
Common stock, dividends declared (in USD per share)       $ 1.02   $ 0.88      
Dividends on common stock       $ 1,120   $ 1,003      
Purchase price       4,950   $ 2,495      
2025 Stockholder Return Program                  
Equity, Class of Treasury Stock [Line Items]                  
Stock repurchase authorization amount       $ 8,600         $ 14,600
Common stock, dividends paid (in USD per share)   $ 1.02              
Repurchases of common stock (in shares)       23,329,925          
Average price paid per share (in USD per share)       $ 210.07          
Purchase price       $ 4,900          
2025 Stockholder Return Program | Forecast                  
Equity, Class of Treasury Stock [Line Items]                  
Common stock, dividends paid (in USD per share) $ 1.02                
2025 Stockholder Return Program | 2025 Q4 Dividends Declared                  
Equity, Class of Treasury Stock [Line Items]                  
Common stock, dividends declared (in USD per share)         $ 1.02        
2025 Stockholder Return Program | 2026 Q1 Dividends Declared                  
Equity, Class of Treasury Stock [Line Items]                  
Common stock, dividends declared (in USD per share)       $ 1.02          
2023-2024 Stockholder Return Program                  
Equity, Class of Treasury Stock [Line Items]                  
Dividends on common stock       $ 1,100          
2023-2024 Stockholder Return Program | DT                  
Equity, Class of Treasury Stock [Line Items]                  
Dividends on common stock       594          
2026 Stockholder Return Program                  
Equity, Class of Treasury Stock [Line Items]                  
Stock repurchase authorization amount       14,600          
Dividends payable       1,100          
2026 Stockholder Return Program | Subsequent Event                  
Equity, Class of Treasury Stock [Line Items]                  
Stock repurchase authorization amount     $ 11,500       $ 18,200 $ 18,200  
Repurchases of common stock (in shares)     3,791,020            
Average price paid per share (in USD per share)     $ 195.87            
Purchase price     $ 743            
2026 Stockholder Return Program | DT                  
Equity, Class of Treasury Stock [Line Items]                  
Dividends payable       $ 594          
v3.26.1
Earnings Per Share - Schedule of Computation of Basic and Diluted Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Earnings Per Share [Abstract]    
Net income $ 2,504 $ 2,953
Weighted-average shares outstanding - basic (in shares) 1,100,174,423 1,140,537,935
Effect of dilutive securities:    
Outstanding stock options and unvested stock awards (in shares) 1,878,823 4,117,362
Weighted-average shares outstanding - diluted (in shares) 1,102,053,246 1,144,655,297
Earnings per share - basic (in USD per share) $ 2.28 $ 2.59
Earnings per share - diluted (in USD per share) $ 2.27 $ 2.58
Outstanding stock options and unvested stock awards    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities (in shares) 2,193,273 961,773
Ka’ena Acquisition earnout    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potentially dilutive securities (in shares) 0 979,153
v3.26.1
Earnings Per Share - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
Jun. 30, 2025
Mar. 09, 2023
Mar. 31, 2026
Mar. 31, 2025
Ka Ena Corporation | Merger And Unit Purchase Agreement        
Class of Stock [Line Items]        
Total consideration transferred $ 1,350 $ 1,350    
Mandatory Convertible Preferred Stock Series A        
Class of Stock [Line Items]        
Preferred shares authorized (in shares)     100,000,000  
Preferred stock, par value (in USD per share)     $ 0.00001  
Preferred shares outstanding (in shares)     0 0
v3.26.1
Commitments and Contingencies (Details)
$ in Millions
 3 Months Ended 24 Months Ended
Jan. 05, 2023
customer_account
Mar. 31, 2026
USD ($)
Jun. 30, 2022
USD ($)
Dec. 31, 2023
USD ($)
Loss Contingencies [Line Items]        
Legal settlement paid   $ 350    
Aggregate incremental expense       $ 150
Number of customer accounts impacted | customer_account 37,000,000      
Selling, General and Administrative Expenses        
Loss Contingencies [Line Items]        
Aggregate incremental expense     $ 400  
v3.26.1
Restructuring Costs - Schedule of Restructuring Plan Expenses Incurred (Details)
$ in Millions
 3 Months Ended
Mar. 31, 2026
USD ($)
Restructuring Cost and Reserve [Line Items]  
Restructuring Incurred Cost Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag Total restructuring plan expenses
Incurred to Date $ 196
UScellular Acquisition Restructuring Initiatives  
Restructuring Cost and Reserve [Line Items]  
Total restructuring plan expenses 85
Network Optimization Restructuring Initiatives  
Restructuring Cost and Reserve [Line Items]  
Total restructuring plan expenses 65
Incurred to Date 134
Contract termination costs  
Restructuring Cost and Reserve [Line Items]  
Incurred to Date 73
Contract termination costs | UScellular Acquisition Restructuring Initiatives  
Restructuring Cost and Reserve [Line Items]  
Total restructuring plan expenses 41
Contract termination costs | Network Optimization Restructuring Initiatives  
Restructuring Cost and Reserve [Line Items]  
Total restructuring plan expenses 27
Incurred to Date 32
Severance costs  
Restructuring Cost and Reserve [Line Items]  
Incurred to Date 89
Severance costs | UScellular Acquisition Restructuring Initiatives  
Restructuring Cost and Reserve [Line Items]  
Total restructuring plan expenses 26
Network decommissioning  
Restructuring Cost and Reserve [Line Items]  
Incurred to Date 34
Network decommissioning | UScellular Acquisition Restructuring Initiatives  
Restructuring Cost and Reserve [Line Items]  
Total restructuring plan expenses 18
Network decommissioning | Network Optimization Restructuring Initiatives  
Restructuring Cost and Reserve [Line Items]  
Total restructuring plan expenses 38
Incurred to Date $ 102
v3.26.1
Restructuring Costs - Narrative (Details)
$ in Millions
 3 Months Ended
Mar. 31, 2026
USD ($)
Restructuring Cost and Reserve [Line Items]  
Restructuring expected period 2 years
UScellular Acquisition Restructuring Initiatives  
Restructuring Cost and Reserve [Line Items]  
Amortization of the right-of-use assets on lease contracts $ 280
UScellular Acquisition Restructuring Initiatives | Network decommissioning  
Restructuring Cost and Reserve [Line Items]  
Restructuring and related cost, accelerated depreciation 229
Network Optimization Restructuring Initiatives  
Restructuring Cost and Reserve [Line Items]  
Restructuring and related cost, accelerated depreciation 60
Network Optimization Restructuring Initiatives | Network decommissioning  
Restructuring Cost and Reserve [Line Items]  
Amortization of the right-of-use assets on lease contracts $ 11
v3.26.1
Restructuring Costs - Schedule of Activity Related to Reduction Initiative Expenses Incurred (Details)
$ in Millions
 3 Months Ended
Mar. 31, 2026
USD ($)
UScellular Acquisition Restructuring Initiatives  
Restructuring Cost and Reserve [Line Items]  
Restructuring reserve, beginning balance $ 91
Expenses Incurred 85
Cash Payments (55)
Restructuring reserve, ending balance 121
Network Optimization Restructuring Initiatives  
Restructuring Cost and Reserve [Line Items]  
Restructuring reserve, beginning balance 1
Expenses Incurred 65
Cash Payments (26)
Restructuring reserve, ending balance 40
Contract termination costs | UScellular Acquisition Restructuring Initiatives  
Restructuring Cost and Reserve [Line Items]  
Restructuring reserve, beginning balance 31
Expenses Incurred 41
Cash Payments (32)
Restructuring reserve, ending balance 40
Contract termination costs | Network Optimization Restructuring Initiatives  
Restructuring Cost and Reserve [Line Items]  
Restructuring reserve, beginning balance 0
Expenses Incurred 27
Cash Payments (14)
Restructuring reserve, ending balance 13
Severance costs | UScellular Acquisition Restructuring Initiatives  
Restructuring Cost and Reserve [Line Items]  
Restructuring reserve, beginning balance 59
Expenses Incurred 26
Cash Payments (8)
Restructuring reserve, ending balance 77
Network decommissioning | UScellular Acquisition Restructuring Initiatives  
Restructuring Cost and Reserve [Line Items]  
Restructuring reserve, beginning balance 1
Expenses Incurred 18
Cash Payments (15)
Restructuring reserve, ending balance 4
Network decommissioning | Network Optimization Restructuring Initiatives  
Restructuring Cost and Reserve [Line Items]  
Restructuring reserve, beginning balance 1
Expenses Incurred 38
Cash Payments (12)
Restructuring reserve, ending balance $ 27
v3.26.1
Restructuring Costs - Schedule of expenses incurred in connection (Details)
$ in Millions
 3 Months Ended
Mar. 31, 2026
USD ($)
Restructuring Cost and Reserve [Line Items]  
Incurred to Date $ 196
Severance costs  
Restructuring Cost and Reserve [Line Items]  
Incurred to Date 89
Severance costs | 2025-2026 Workforce Transformation  
Restructuring Cost and Reserve [Line Items]  
Total restructuring plan expenses 141
Incurred to Date $ 531
v3.26.1
Restructuring Costs - Schedule of Workforce Reduction Incurred and Cash Payments Made (Details) - 2025-2026 Workforce Transformation - Severance costs
$ in Millions
 3 Months Ended
Mar. 31, 2026
USD ($)
Restructuring Reserve [Roll Forward]  
Restructuring reserve, beginning balance $ 374
Expenses Incurred 141
Cash Payments (123)
Restructuring reserve, ending balance $ 392
v3.26.1
Additional Financial Information - Schedule of Accounts Payable and Accrued Liabilities (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Supplemental Financial Statement Elements [Abstract]    
Accounts payable $ 4,573 $ 5,219
Payroll and related benefits 1,316 1,709
Property and other taxes, including payroll 1,697 1,601
Accrued interest 1,073 1,025
Other accrued liabilities 863 726
Accounts payable and accrued liabilities $ 9,522 $ 10,280
v3.26.1
Additional Financial Information - Narrative (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Accounts Payable and Accrued Liabilities    
Equity, Class of Treasury Stock [Line Items]    
Outstanding checks $ 363 $ 823
v3.26.1
Additional Financial Information - Schedule of Supplemental Consolidated Statements of Cash Flows Information (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Supplemental Financial Statement Elements [Abstract]    
Interest payments, net of amounts capitalized $ 1,054 $ 934
Operating lease payments 1,537 1,214
Income tax payments, net of refunds received 10 10
Non-cash investing and financing activities    
Change in accounts payable and accrued liabilities for purchases of property and equipment (357) (463)
Operating lease right-of-use assets obtained in exchange for lease obligations 525 481
Financing lease right-of-use assets obtained in exchange for lease obligations $ 222 $ 248
v3.26.1
Additional Financial Information - Schedule of Cash and Cash Equivalents, Including Restricted Cash (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Supplemental Financial Statement Elements [Abstract]    
Cash and cash equivalents $ 3,520 $ 5,598
Restricted cash (included in Other current assets) 301 296
Restricted cash (included in Other assets) 88 82
Cash and cash equivalents, including restricted cash $ 3,909 $ 5,976
v3.26.1
Subsequent Events (Details)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended
Apr. 25, 2026
USD ($)
company
Apr. 24, 2026
USD ($)
company
Apr. 24, 2026
USD ($)
$ / shares
shares
Mar. 31, 2026
USD ($)
Mar. 31, 2025
USD ($)
Apr. 27, 2026
USD ($)
Apr. 23, 2026
USD ($)
Subsequent Event [Line Items]              
Purchase price       $ 4,950 $ 2,495    
Investments       0 $ 75    
2026 Stockholder Return Program              
Subsequent Event [Line Items]              
Stock repurchase authorization amount       $ 14,600      
Subsequent Event | Wren House Joint Venture              
Subsequent Event [Line Items]              
Number of companies included in joint venture | company   1          
Investments   $ 700          
Ownership interest in joint venture (percent)   50.00% 50.00%        
Subsequent Event | Oak Hill Joint Venture              
Subsequent Event [Line Items]              
Number of companies included in joint venture | company 2            
Investments $ 2,000            
Ownership interest in joint venture (percent) 50.00%            
Subsequent Event | 2026 Stockholder Return Program              
Subsequent Event [Line Items]              
Stock repurchase authorization amount   $ 11,500 $ 11,500     $ 18,200 $ 18,200
Repurchases of common stock (in shares) | shares     3,791,020        
Average price paid per share (in USD per share) | $ / shares     $ 195.87        
Purchase price     $ 743