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Earnings Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Basic and diluted earnings per share [Abstract]
Loss from continuing operations	$ (578)		$ (132)		$ (111)
Weighted average common shares outstanding	92.1		91.2		90.5
Add: Weighted average restricted stock awards outstanding	0.6	[1]	0.8	[1]	0.8	[1]
Basic weighted average common shares outstanding	92.8		92.0		91.3
Add: Dilutive impact of stock options	0		0		0
Diluted weighted average common shares outstanding	92.8		92.0		91.3
Basic and diluted loss per share	$ (6.23)		$ (1.44)		$ (1.21)
[1] Restricted stock awards containing rights to non-forfeitable dividends which participate in undistributed earnings with common shareholders are considered participating securities for purposes of computing earnings per share.

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