Income Taxes (Tables)

3 Months Ended

Mar. 31, 2019

Income Tax Disclosure [Abstract]

Income Tax Allocation

Income Tax Allocation
	Three Months Ended March 31,
(Dollars in millions)	2019			2018
Loss before income taxes	$	(247	)	$	(21	)
Income tax benefit/(provision)	$	29		$	(13	)
Effective tax rate	11.7		%	(61.9		)%