Income Taxes (Tables)

6 Months Ended

Jun. 30, 2019

Income Tax Disclosure [Abstract]

Income Tax Allocation

Income Tax Allocation
	Three Months Ended June 30,						Six Months Ended June 30,
(Dollars in millions)	2019			2018			2019			2018
Loss before income taxes	$	(375	)	$	(7	)	$	(622	)	$	(28	)
Income tax benefit	$	60		$	36		$	89		$	23
Effective tax rate	16.0		%	514.3		%	14.3		%	82.1		%