Goodwill, Customer Relationships and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill

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

	September 30, 2020		December 31, 2019
	(Dollars in millions)
Goodwill	$	9,360	9,360
Customer relationships, less accumulated amortization of $5,520 and $5,231	$	179	468
Other intangible assets, less accumulated amortization of $1,813 and $1,780	275		311
Total other intangible assets, net	$	454	779

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

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 (remaining three months)	$	114
2021	163
2022	58
2023	46
2024	34