v3.20.4
Goodwill, Spectrum License Transactions and Other Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The changes in the carrying amount of goodwill for the years ended December 31, 2020 and 2019, are as follows:
(in millions)Goodwill
Historical goodwill, net of accumulated impairment losses of $10,766
$1,901 
Goodwill from acquisition in 201929 
Balance as of December 31, 20191,930 
Goodwill from acquisitions in 20209,405 
Layer3 goodwill impairment(218)
Balance as of December 31, 2020$11,117 
Accumulated impairment losses at December 31, 2020$(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
790 
Other intangible assets
7 years
428 
Total intangible assets acquired$51,725 
(1) Tradenames include the Sprint brand
Schedule of Spectrum Licenses
The following table summarizes our spectrum license activity for the years ended December 31, 2020 and 2019:
(in millions)20202019
Spectrum licenses, beginning of year$36,465 $35,559 
Spectrum license acquisitions1,023 857 
Spectrum licenses acquired in Merger45,400 — 
Spectrum licenses transferred to held for sale(83)— 
Costs to clear spectrum23 49 
Spectrum licenses, end of year$82,828 $36,465 
Schedule of Other Intangible Assets
The components of Other intangible assets were as follows:
Useful LivesDecember 31, 2020December 31, 2019
(in millions)Gross AmountAccumulated AmortizationNet AmountGross AmountAccumulated AmortizationNet Amount
Customer relationships
Up to 8 years
$4,900 $(865)$4,035 $1,104 $(1,104)$— 
Tradenames and patents
Up to 19 years
598 (412)186 323 (258)65 
Favorable spectrum leases
Up to 27 years
790 (35)755 — — — 
Other
Up to 10 years
377 (55)322 100 (50)50 
Other intangible assets$6,665 $(1,367)$5,298 $1,527 $(1,412)$115 
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,
2021$1,246 
2022982 
2023827 
2024669 
2025511 
Thereafter1,063 
Total$5,298