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Goodwill, Spectrum License Transactions and Other Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill The changes in the carrying amount of goodwill for the years ended December 31, 2021 and 2020, are as follows:
(in millions)Goodwill
Historical goodwill, net of accumulated impairment losses of $10,766
$1,930 
Goodwill from acquisition in 20209,405 
Layer3 goodwill impairment(218)
Balance as of December 31, 202011,117 
Purchase price adjustment of goodwill from acquisitions in 202022 
Goodwill from acquisitions in 20211,049 
Balance as of December 31, 2021$12,188 
Accumulated impairment losses at December 31, 2021$(10,984)
Schedule of Fair Value of Intangible Assets Acquired in Merger
The following table summarizes the fair value of the intangible assets acquired in the Merger:
Weighted-Average Useful Life (in years)Fair Value as of April 1, 2020
(in millions)
Spectrum licensesIndefinite-lived$45,400 
Tradenames (1)
2 years
207 
Customer relationships
8 years
4,900 
Favorable spectrum leases
18 years
745 
Other intangible assets
7 years
428 
Total intangible assets acquired$51,680 
(1) Tradenames include the Sprint brand
Schedule of Spectrum Licenses The following table summarizes our spectrum license activity for the years ended December 31, 2021, 2020 and 2019:
(in millions)202120202019
Spectrum licenses, beginning of year$82,828 $36,465 $35,559 
Spectrum license acquisitions9,545 1,023 857 
Spectrum licenses acquired in Merger— 45,400 — 
Spectrum licenses transferred to held for sale(28)(83)— 
Costs to clear spectrum261 23 49 
Spectrum licenses, end of year$92,606 $82,828 $36,465 
Schedule of Other Intangible Assets The components of Other intangible assets were as follows:
Useful LivesDecember 31, 2021December 31, 2020
(in millions)Gross AmountAccumulated AmortizationNet AmountGross AmountAccumulated AmortizationNet Amount
Customer relationships
Up to 8 years
$4,879 $(1,863)$3,016 $4,900 $(865)$4,035 
Reacquired rights
Up to 9 years
770 (46)724 — — — 
Tradenames and patents
Up to 19 years
171 (91)80 598 (412)186 
Favorable spectrum leases
Up to 27 years
728 (74)654 790 (35)755 
Other
Up to 10 years
377 (118)259 377 (55)322 
Other intangible assets$6,925 $(2,192)$4,733 $6,665 $(1,367)$5,298 
Schedule of Estimated Aggregate Future Amortization Expense The estimated aggregate future amortization expense for intangible assets subject to amortization are summarized below:
(in millions)Estimated Future Amortization
Twelve Months Ending December 31,
2022$1,072 
2023917 
2024760 
2025601 
2026440 
Thereafter943 
Total$4,733