Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Additional Paid in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Accumulated Deficit)
Beginning balance at Dec. 31, 2013	$ 1,426	$ 266	$ 1	$ 1,479	$ (5)	$ (315)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(52)					(52)
Total other comprehensive income	12				12
Accretion of preferred stock	0	1				(1)
Stock-based compensation	1			1
Ending balance at Jun. 30, 2014	1,387	267	1	1,480	7	(368)
Beginning balance at Dec. 31, 2014	1,373	267	1	1,482	8	(385)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	78					78
Total other comprehensive income	0
Stock-based compensation	0
Ending balance at Jun. 30, 2015	$ 1,451	$ 267	$ 1	$ 1,482	$ 8	$ (307)