Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination

The components of net other intangible assets were as follows:

	June 30, 2021						December 31, 2020
(Dollars in millions)	Gross Amount		Accumulated Amortization		Net Carrying Amount		Gross Amount		Accumulated Amortization		Net Carrying Amount
Other intangible assets:
Customer relationships	$	42	$	10	$	32	$	42	$	8	$	34
Other	36		11		25		36		9		27
Total other intangible assets	$	78	$	21	$	57	$	78	$	17	$	61

Finite-lived Intangible Assets Amortization Expense

For the six months ended June 30, 2021, we recorded amortization expense of $4 million. Assuming no future impairments of other intangible assets or additional acquisitions or dispositions, the following table presents the Company's future expected amortization expense for other intangible assets that will continue to be amortized as of June 30, 2021:

Years ended December 31, (Dollars in millions)	Other Intangible Assets
2021 (excluding the six months ended June 30, 2021)	$	4
2022	8
2023	8
2024	8
2025	7
2026 and thereafter	22
Total future amortization expense	$	57