Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (90)	$ (142)	$ (321)	$ (290)
Other comprehensive loss, before tax:
Change in cumulative translation adjustment	18	(2)	(3)	(13)
Pension liability	0	0	1	0
Other comprehensive income (loss), before tax	18	(2)	(2)	(13)
Expense for taxes	0	0	0	0
Other comprehensive income (loss), net of tax	18	(2)	(2)	(13)
Comprehensive loss	(72)	(144)	(323)	(303)
Less: Comprehensive income (loss) attributable to non-controlling interest	0	(7)	1	(18)
Comprehensive loss attributable to controlling interest	$ (72)	$ (137)	$ (324)	$ (285)