Goodwill, Customer Relationships and Other Intangible Assets (Tables)

6 Months Ended

Jun. 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:

	June 30, 2020		December 31, 2019
	(Dollars in millions)
Goodwill	$	9,360	9,360
Other intangible assets subject to amortization:
Customer relationships, less accumulated amortization of $5,426 and $5,231	$	273	468
Other intangible assets, less accumulated amortization of $1,817 and $1,780	294		311
Total other intangible assets, net	$	567	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 six months)	$	259
2021	150
2022	49
2023	39
2024	31