CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - 3 months ended Mar. 31, 2016 - USD ($) $ in Millions	Common Stock [Member]	Preferred Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Common Stock in Treasury [Member]	Total
Balance, shares at Dec. 31, 2015	390,138,549	1,725,000
Balance at Dec. 31, 2015	$ 4		$ 3,409	$ (1,082)	$ (48)	$ (1)	$ 2,282
Comprehensive loss:
Net loss				(1,132)			(1,132)
Other comprehensive income					4		4
Comprehensive income (loss)							(1,128)
Stock-based compensation			26				26
Preferred stock dividend			(27)				(27)
Issuance of restricted stock, shares	84,165
Cancellation of restricted stock, shares	(24,333)
Tax withholding - stock compensation, shares	(524,703)
Tax withholding - stock compensation			(5)				(5)
Balance, shares at Mar. 31, 2016	389,673,678	1,725,000
Balance at Mar. 31, 2016	$ 4		$ 3,403	$ (2,214)	$ (44)	$ (1)	$ 1,148