Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Paid In Capital	Net Former Parent Investment	Accumulated Other Comprehensive Income	Non-controlling Interests
Balance at beginning of period at Dec. 31, 2016	$ 1,090			$ 877	$ (29)	$ 242
Comprehensive Income (Loss):
Net loss	(52)			(48)		(4)
Foreign currency translation	15				13	2
Net change in cash flow hedges	(6)				(6)
Comprehensive loss	(43)			(48)	7	(2)
Net transfers from Former Parent	179			179
Balance at end of period at Jun. 30, 2017	1,226			1,008	(22)	240
Balance at beginning of period at Dec. 31, 2017	957			844	(8)	121
Comprehensive Income (Loss):
Net loss	(103)			(95)		(8)
Foreign currency translation	(4)				(5)	1
Net change in cash flow hedges	1				1
Pension liability	(1)				(1)
Reclassification of Former Parent's net investment and issuance of ordinary shares in connection with separation		$ 87	$ 1,915	(2,002)
Comprehensive loss	(107)	87	1,915	(2,097)	(5)	(7)
Net transfers from Former Parent	1,252			$ 1,253		(1)
Balance at end of period at Jun. 30, 2018	$ 2,102	$ 87	$ 1,915		$ (13)	$ 113