Stockholders' Equity (Details) (USD $) In Millions, except Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Equity Attributable to Stockholders [Abstract]
Beginning balance			$ 2,486
Beginning balance, Shares			192,970,437
Net income (loss)	163	(6)	320	136
Equity compensation activity and other			120
Dividends			(1)
Other comprehensive income (loss)	(113)	95	(35)	(7)
Sale of controlling interests			(13)
Acquisition of controlling interest			1
Ending balance	2,878		2,878
Ending Balance, Shares	195,342,872		195,342,872
Common Shares [Member]
Equity Attributable to Stockholders [Abstract]
Beginning balance			2
Beginning balance, Shares			193,000,000
Equity compensation activity and other, Shares			2,000,000
Ending balance	2		2
Ending Balance, Shares	195,000,000		195,000,000
Additional Paid-In-Capital [Member]
Equity Attributable to Stockholders [Abstract]
Beginning balance			805
Equity compensation activity and other			120
Ending balance	925		925
Accumulated Other Comprehensive (Loss) Income [Member]
Equity Attributable to Stockholders [Abstract]
Beginning balance			(283)
Other comprehensive income (loss)			(36)
Ending balance	(319)		(319)
Retained Earnings [Member]
Equity Attributable to Stockholders [Abstract]
Beginning balance			1,947
Net income (loss)			322
Ending balance	2,269		2,269
Equity Attributable to Noncontrolling Interests [Member]
Equity Attributable to Stockholders [Abstract]
Beginning balance			15
Net income (loss)			(2)
Dividends			(1)
Other comprehensive income (loss)			1
Sale of controlling interests			(13)
Acquisition of controlling interest			1
Ending balance	$ 1		$ 1