Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Schedule of Adjustments Made Due to ASU 2014-09

Balance Sheet (Dollars in millions)	Balance at December 31, 2017		Adjustments due to ASU 2014-09			Balance at January 1, 2018
Assets
Inventories, net	$	154	$	(5	)	$	149
Prepaid expenses and contract assets	34		7			41
Equity
Net Former Parent investment	$	844	$	1		$	845

	Year Ended December 31, 2018
Income Statement (Dollars in millions)	As Reported			Balances without adoption of ASC 606			Effect of Changes
Net sales	$	2,228		$	2,227		$	1
Cost of sales	(1,798		)	(1,797		)	(1		)
Operating loss	(197		)	(197		)	—

	As of December 31, 2018
Balance Sheet (Dollars in millions)	As Reported		Balances without adoption of ASC 606		Effect of Changes
Assets
Inventories, net	$	172	$	178	$	(6	)
Prepaid expenses and contract assets	39		31		8
Equity
Additional paid-in capital	$	1,938	$	1,937	$	1