Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Paid In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Non-controlling Interest
Balance at beginning of period at Dec. 31, 2019	$ 1,818	$ 111	$ 2,343	$ (681)	$ (44)	$ 89
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(321)			(322)		1
Foreign currency translation	1					1
Stock based compensation expense	4		4
Business divestitures	(88)				3	(91)
Balance at end of period at Jun. 30, 2020	1,414	111	2,347	(1,003)	(41)	$ 0
Balance at beginning of period at Dec. 31, 2020	1,239	111	2,349	(1,226)	5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(205)			(205)
Foreign currency translation	(10)				(10)
Stock based compensation expense	5		5
Issuance of common stock	1	1
Balance at end of period at Jun. 30, 2021	$ 1,030	$ 112	$ 2,354	$ (1,431)	$ (5)