Income Taxes (Tables)

9 Months Ended

Sep. 30, 2021

Income Tax Disclosure [Abstract]

Schedule of Deferred Tax Assets and Liabilities

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities at September 30, 2021 and December 31, 2020 is as follows:

(Dollars in millions)	September 30, 2021		December 31, 2020
Gross deferred tax assets	$	118	$	153
Less valuation allowance	(13)		(11)
Deferred tax assets	105		142
Deferred tax liabilities	51		55
Deferred tax assets, net	$	54	$	87