Earning Per Common Share (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Numerator (basic and diluted):
(Loss) income from continuing operations	$ (57)	$ 14	$ (19)	$ (27)
Allocation to unvested restricted stock awards	(1)	(1)	(1)	(2)
(Loss) income from continuing operations attributable to common shareholders	(58)	13	(20)	(29)
Loss from discontinued operations	(18)	(6)	(23)	(11)
Net (loss) income available to Common shareholders	$ (76)	$ 7	$ (43)	$ (40)
Denominator:
Basic common shares (based upon weighted average)	349	348	349	348
Add:
Contingent common shares
Stock option dilution		1
Diluted common shares	349	349	349	348