Condensed Consolidated Statement of Equity (Deficit) - 9 months ended Sep. 30, 2017 - USD ($) $ in Millions	Total	Common Stock [Member]	Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income [Member]	Accumulated Deficit [Member]	Parent [Member]	Noncontrolling Interest [Member]
Balance at Dec. 31, 2016	$ (2,539)	$ 1	$ 526	$ (296)	$ (39)	$ (2,730)	$ (2,538)	$ (1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(146)	0	0	0	0	(146)	(146)	0
Other comprehensive income	25	0	0	0	25	0	25	0
Balance at Sep. 30, 2017	$ (2,660)	$ 1	$ 526	$ (296)	$ (14)	$ (2,876)	$ (2,659)	$ (1)