Goodwill, Customer Relationships and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

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,
	2019		2018
	(Dollars in millions)
Goodwill	$	21,534	28,031
Customer relationships, less accumulated amortization of $9,809 and $8,492	$	7,596	8,911
Indefinite-life intangible assets	$	269	269
Other intangible assets subject to amortization:
Capitalized software, less accumulated amortization of $2,957 and $2,616	$	1,599	1,468
Trade names, less accumulated amortization of $91 and $61	103		131
Total other intangible assets, net	$	1,971	1,868

Schedule of estimated amortization expense for intangible assets

We estimate that total amortization expense for intangible assets for the years ending December 31, 2020 through 2024 will be as follows:

	(Dollars in millions)
2020	$	1,674
2021	1,258
2022	1,037
2023	886
2024	828

Schedule of goodwill attributable to segments

The following tables show the rollforward of goodwill assigned to our reportable segments from December 31, 2017 through December 31, 2019.

	Business		Consumer		Total
	(Dollars in millions)
As of December 31, 2017(1)	$	20,197	10,278		30,475
Purchase accounting and other adjustments(2)(3)	250		32		282
Impairment	—		(2,726	)	(2,726	)
As of December 31, 2018	$	20,447	7,584		28,031

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(1) Goodwill is net of accumulated impairment losses of $1.1 billion that related to our former hosting segment now included in our business segment.

(2) We allocated $32 million of Level 3 goodwill to consumer as we expect the consumer segment to benefit from synergies resulting from the business combination.

(3) Includes $58 million decrease due to effect of foreign currency exchange rate change.

	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 rate change and other	9			—		—		—		—		9
Impairments	(934		)	(1,471	)	(896	)	(3,019	)	(186	)	(6,506	)
As of December 31, 2019	$	2,670		4,738		3,259		3,813		7,054		21,534