v3.26.3
Business Combinations - Schedule of Fair Value of Assets Acquired and Liabilities Assumed UScellular Acquisition (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Aug. 01, 2025
Feb. 03, 2025
Business Combination [Line Items]        
Goodwill $ 13,665 $ 13,678    
UScellular Wireless Assets Operations        
Business Combination [Line Items]        
Cash and cash equivalents     $ 12  
Accounts receivable     317  
Equipment installment plan receivables     503  
Inventory     129  
Prepaid expenses     63  
Other current assets     33  
Property and equipment     1,451  
Operating lease right-of-use assets     1,199  
Goodwill     206  
Equipment installment plan receivables due after one year     388  
Deferred tax assets     23  
Other assets     125  
Total assets acquired     6,586  
Accounts payable and accrued liabilities     295  
Deferred revenue     275  
Short-term operating lease liabilities     179  
Other current liabilities     114  
Long-term debt     1,653  
Operating lease liabilities     1,029  
Other long-term liabilities     227  
Total liabilities assumed     3,772  
Total consideration transferred     2,814  
Short-term debt assumed for financing of property and equipment at fair value     1,700  
UScellular Wireless Assets Operations | Master License Agreement        
Business Combination [Line Items]        
Operating lease right-of-use assets     749  
Short-term operating lease liabilities     51  
Operating lease liabilities     698  
UScellular Wireless Assets Operations | Spectrum licenses        
Business Combination [Line Items]        
Intangible assets     1,730  
UScellular Wireless Assets Operations | Other intangible assets        
Business Combination [Line Items]        
Intangible assets     $ 407  
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
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
Vistar Media Inc. | Other intangible assets        
Business Combination [Line Items]        
Intangible assets       $ 264