Wireless Licenses, Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Carrying Amount of Wireless Licenses

The carrying amounts of Wireless licenses are as follows:

	At June 30,		At December 31,
(dollars in millions)	2020		2019
Wireless licenses	$	95,767	$	95,059

Changes in Carrying Amount of Goodwill

Changes in the carrying amount of Goodwill are as follows:

(dollars in millions)	Consumer		Business		Other		Total
Balance at January 1, 2020 (1)	$	17,104	$	7,269	$	16	$	24,389
Acquisitions (Note 3)	—		282		—		282
Reclassifications, adjustments and other	—		(4)		—		(4)
Balance at June 30, 2020 (1)	$	17,104	$	7,547	$	16	$	24,667

(1) Other Goodwill is net of accumulated impairment charges of $4.8 billion, related to our Media reporting unit.

Composition of Other Intangible Assets, Net

The following table displays the composition of Other intangible assets, net as well as the respective amortization period:

	At June 30, 2020						At December 31, 2019
(dollars in millions)	Gross Amount		Accumulated Amortization		Net Amount		Gross Amount		Accumulated Amortization		Net Amount
Customer lists (8 to 13 years)	$	4,009	$	(1,740)	$	2,269	$	3,896	$	(1,511)	$	2,385
Non-network internal-use software (5 to 7 years)	21,670		(15,292)		6,378		20,530		(14,418)		6,112
Other (2 to 25 years)	1,981		(1,028)		953		1,967		(966)		1,001
Total	$	27,660	$	(18,060)	$	9,600	$	26,393	$	(16,895)	$	9,498

Amortization Expense for Other Intangible Assets

The amortization expense for Other intangible assets was as follows: 

	Three Months Ended		Six Months Ended
(dollars in millions)	June 30,		June 30,
2020	$	605	$	1,197
2019	569		1,124

Estimated Future Amortization Expense for Other Intangible Assets

The estimated future amortization expense for Other intangible assets for the remainder of the current year and next 5 years is as follows:

Years	(dollars in millions)
Remainder of 2020	$	1,194
2021	2,136
2022	1,838
2023	1,476
2024	1,105
2025	746