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Goodwill, Spectrum License Transactions and Other Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The changes in the carrying amount of goodwill for the years ended December 31, 2023 and 2022, are as follows:
(in millions)Goodwill
Balance as of December 31, 2021, net of accumulated impairment losses of $10,984
$12,188 
Goodwill from acquisitions in 202246 
Balance as of December 31, 202212,234 
Balance as of December 31, 2023$12,234 
Accumulated impairment losses at December 31, 2023$(10,984)
Schedule of Spectrum Licenses
The following table summarizes our spectrum license activity for the years ended December 31, 2023, 2022 and 2021:
(in millions)202320222021
Spectrum licenses, beginning of year$95,798 $92,606 $82,828 
Spectrum license acquisitions103 3,152 9,545 
Spectrum licenses transferred to held for sale(2)(64)(28)
Costs to clear spectrum808 104 261 
Spectrum licenses, end of year$96,707 $95,798 $92,606 
Schedule of Other Intangible Assets
The components of Other intangible assets were as follows:
Useful LivesDecember 31, 2023December 31, 2022
(in millions)Gross AmountAccumulated AmortizationNet AmountGross AmountAccumulated AmortizationNet Amount
Customer relationships
Up to 8 years
$4,883 $(3,451)$1,432 $4,883 $(2,732)$2,151 
Reacquired rights
Up to 9 years
770 (231)539 770 (139)631 
Tradenames and patents
Up to 19 years
208 (134)74 196 (117)79 
Favorable spectrum leases
Up to 27 years
686 (148)538 705 (113)592 
Other
Up to 10 years
353 (318)35 353 (298)55 
Other intangible assets$6,900 $(4,282)$2,618 $6,907 $(3,399)$3,508 
Schedule of Estimated Aggregate Future Amortization Expense
The estimated aggregate future amortization expense for intangible assets subject to amortization is summarized below:
(in millions)Estimated Future Amortization
Twelve Months Ending December 31,
2024$722 
2025570 
2026417 
2027290 
2028171 
Thereafter448 
Total$2,618