Goodwill, Spectrum License Transactions and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2020

The changes in the carrying amount of goodwill for the six months ended June 30, 2020 and year ended December 31, 2019, are as follows:


(in millions)	Goodwill

Historical goodwill, net of accumulated impairment losses of $10,766	$	1,901
Goodwill from acquisition in 2019	29

Balance as of December 31, 2019	1,930

Goodwill from acquisition of Sprint	9,198
Layer3 goodwill impairment	(218)

Balance as of June 30, 2020	$	10,910
Accumulated impairment losses at June 30, 2020	$	(10,984)

The following table summarizes the fair value of the intangible assets acquired in the Merger:


	Weighted Average Useful Life (in years)	Fair Value (in millions)
Spectrum licenses	Indefinite-lived	$	45,400
Tradenames⁽¹⁾	2 years	207
Customer relationships	8 years	4,900
Favorable spectrum leases	18 years	790
Patent rights	7 years	51
Other intangible assets	7 years	377
Total intangible assets acquired		$	51,725

(1) Tradenames include the Sprint brand

The following table summarizes our spectrum license activity for the six months ended June 30, 2020:


(in millions)	2020
Spectrum licenses, beginning of year	$	36,465

Spectrum license acquisitions	987
Spectrum licenses acquired in Merger	45,400

Costs to clear spectrum	18

Spectrum licenses, end of period	$	82,870

The components of Other intangible assets were as follows:

The estimated aggregate future amortization expense for intangible assets subject to amortization are summarized below:


(in millions)	Estimated Future Amortization

Twelve Months Ending June 30,
2021	$	1,406
2022	1,096
2023	904
2024	749
2025	590
Thereafter	1,293

Total	$	6,038