Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net loss	$ (139)	$ (72)	$ (429)	$ (175)
Other comprehensive income (loss), before tax:
Change in cumulative translation adjustment	(27)	(2)	(40)	(6)
Net change in cash flow hedges	0	0	0	1
Pension liability	0	(1)	0	(2)
Other comprehensive income (loss), before tax	(27)	(3)	(40)	(7)
Expense for taxes	0	0	0	0
Other comprehensive income (loss), net of tax	(27)	(3)	(40)	(7)
Comprehensive loss	(166)	(75)	(469)	(182)
Less: Comprehensive loss attributable to non-controlling interest	(7)	(9)	(26)	(16)
Comprehensive loss attributable to controlling interest	$ (159)	$ (66)	$ (443)	$ (166)