Income Taxes (Tables)

6 Months Ended

Jun. 30, 2018

Income Tax Disclosure [Abstract]

Schedule of Income Tax Expense (Benefit) and Effective Tax Rate

The Company’s income tax expense and effective tax rate for the six months endedJune 30, 2018 and 2017 were as follows:

	Six Months Ended June 30,
	2018			2017
	(dollars in millions)
Income tax expense	$	42		$	53
Effective tax rate	18		%	24		%