v3.25.3
Goodwill, Spectrum License Transactions and Other Intangible Assets (Tables)
 9 Months Ended
Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The changes in the carrying amount of goodwill for the nine months ended September 30, 2025, are as follows:
(in millions)Goodwill
Balance as of December 31, 2024, net of accumulated impairment losses of $10,984
$13,005 
Adjustment to goodwill from the Ka’ena Acquisition6 
Provisionally assigned goodwill from acquisitions in 2025679 
Balance as of September 30, 2025, net of accumulated impairment losses of $10,984
$13,690 
Schedule of Spectrum Licenses
The following table summarizes our spectrum license activity for the nine months ended September 30, 2025:
(in millions)Spectrum
Spectrum licenses, beginning of year$100,558 
Spectrum license acquisitions1,134 
Spectrum licenses acquired from the UScellular Acquisition1,730 
Spectrum licenses transferred to held for sale(5,674)
Costs to clear spectrum1 
Spectrum licenses, end of period$97,749 
Schedule of Other Intangible Assets
The components of Other intangible assets were as follows:
Useful LivesSeptember 30, 2025December 31, 2024
(in millions)Gross AmountAccumulated AmortizationNet AmountGross AmountAccumulated AmortizationNet Amount
Customer relationships (1)
Up to 10 years
$7,597 $(4,650)$2,947 $5,427 $(4,123)$1,304 
Reacquired rights
Up to 9 years
770 (393)377 770 (323)447 
Tradenames and patents (1)
Up to 19 years
418 (179)239 338 (157)181 
Favorable spectrum leases
Up to 27 years
567 (177)390 620 (169)451 
Other (1)
Up to 10 years
557 (393)164 478 (349)129 
Other intangible assets$9,909 $(5,792)$4,117 $7,633 $(5,121)$2,512 
(1)Includes intangible assets acquired through our acquisitions. See Note 2 - Business Combinations and Note 3 - Joint Ventures for more information.
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 September 30,
2026$1,046 
2027820 
2028617 
2029470 
2030302 
Thereafter862 
Total$4,117