Net Income (Loss) Per Share (Reconciliation Of Earnings Attributable To Common Stockholders, Basic And Diluted) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement Operating Activities Segment [Line Items]
Income (loss) from continuing operations attributable to parent	$ 149,000,000	$ 85,000,000
Continuing Operations [Member]
Statement Operating Activities Segment [Line Items]
Income (loss) from continuing operations attributable to parent	149,000,000	85,000,000
Participating basic earnings	(1,000,000)	(1,000,000)
Basic income attributable to common stockholders, Basic	148,000,000	84,000,000
Diluted income attributable to common stockholders	$ 148,000,000	$ 84,000,000