Condensed Consolidated Statements Of Changes In Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings (Deficit)	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2013	$ 1,521	$ 1	$ 1,925	$ 236	$ (120)	$ (521)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	190			190
Dividends declared	(20)			(20)
Additional paid-in capital	(29)		(29)
Other comprehensive income (loss), net of tax	12					12
Treasury stock activity	(105)				(105)
Balance at Jun. 30, 2014	1,569	1	1,896	406	(225)	(509)
Balance at Dec. 31, 2014	1,365	1	1,959	525	(258)	(862)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	243			243
Dividends declared	(39)			(39)
Additional paid-in capital	(17)		(17)
Other comprehensive income (loss), net of tax	26					26
Treasury stock activity	(93)				(93)
Balance at Jun. 30, 2015	$ 1,485	$ 1	$ 1,942	$ 729	$ (351)	$ (836)