Goodwill, Customer Relationships and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of goodwill and other intangible assets

Goodwill, customer relationships and other intangible assets consisted of the following:

	As of December 31,
	2020		2019
	(Dollars in millions)
Goodwill	$	18,870	21,534
Indefinite-life intangible assets	$	278	269
Other intangible assets subject to amortization:
Customer relationships, less accumulated amortization of $11,060 and $9,809	6,344		7,596
Capitalized software, less accumulated amortization of $3,279 and $2,957	1,520		1,599
Trade names, less accumulated amortization of $120 and $91	77		103
Total other intangible assets, net	$	8,219	9,567

Schedule of estimated amortization expense for intangible assets

We estimate that total amortization expense for intangible assets for the years ending December 31, 2021 through 2025 will be as follows:

	(Dollars in millions)
2021	$	1,282
2022	1,065
2023	920
2024	853
2025	761

Schedule of goodwill attributable to segments

The following tables show the rollforward of goodwill assigned to our reportable segments from December 31, 2018 through December 31, 2020.

	Business		Consumer	Total
	(Dollars in millions)
As of December 31, 2018(1)	$	20,447	7,584	28,031

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(1) Goodwill is net of accumulated impairment losses of $3.8 billion.

	International and Global Accounts		Enterprise	Small and Medium Business	Wholesale	Consumer	Total
	(Dollars in millions)
As of January 1, 2019	$	3,595	5,222	5,193	6,437	7,584	28,031
January 2019 reorganization	—		987	(1,038)	395	(344)	—
Effect of foreign currency exchange rate change and other	9		—	—	—	—	9
Impairment	(934)		(1,471)	(896)	(3,019)	(186)	(6,506)
As of December 31, 2019(1)	2,670		4,738	3,259	3,813	7,054	21,534
Effect of foreign currency exchange rate change and other	(15)		—	(7)	—	—	(22)
Impairment	(100)		—	(444)	(699)	(1,399)	(2,642)
As of December 31, 2020(1)	$	2,555	4,738	2,808	3,114	5,655	18,870

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(1) Goodwill at December 31, 2020 and December 31, 2019 is net of accumulated impairment losses of $12.9 billion and $10.3 billion, respectively.