v3.24.0.1
Goodwill, Spectrum License Transactions and Other Intangible Assets - Other Intangible Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]    
Gross Amount $ 6,900 $ 6,907
Accumulated Amortization (4,282) (3,399)
Net Amount 2,618 3,508
Estimated Future Amortization    
2024 722  
2025 570  
2026 417  
2027 290  
2028 171  
Thereafter 448  
Net Amount 2,618 3,508
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross Amount 4,883 4,883
Accumulated Amortization (3,451) (2,732)
Net Amount 1,432 2,151
Estimated Future Amortization    
Net Amount $ 1,432 2,151
Customer relationships | Maximum    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, useful life 8 years  
Reacquired rights    
Finite-Lived Intangible Assets [Line Items]    
Gross Amount $ 770 770
Accumulated Amortization (231) (139)
Net Amount 539 631
Estimated Future Amortization    
Net Amount $ 539 631
Reacquired rights | Maximum    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, useful life 9 years  
Tradenames and patents    
Finite-Lived Intangible Assets [Line Items]    
Gross Amount $ 208 196
Accumulated Amortization (134) (117)
Net Amount 74 79
Estimated Future Amortization    
Net Amount $ 74 79
Tradenames and patents | Maximum    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, useful life 19 years  
Favorable spectrum leases    
Finite-Lived Intangible Assets [Line Items]    
Gross Amount $ 686 705
Accumulated Amortization (148) (113)
Net Amount 538 592
Estimated Future Amortization    
Net Amount $ 538 592
Favorable spectrum leases | Maximum    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, useful life 27 years  
Other    
Finite-Lived Intangible Assets [Line Items]    
Gross Amount $ 353 353
Accumulated Amortization (318) (298)
Net Amount 35 55
Estimated Future Amortization    
Net Amount $ 35 $ 55
Other | Maximum    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, useful life 10 years