Loss Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Computations of basic and diluted loss per share for Loss from Continuing and discontinued Operations
Net loss	$ (6.1)	$ (7.2)
Loss from discontinued operations	(5.6)	(3.7)
Loss from continuing operations	$ (0.5)	$ (3.5)
Weighted-average shares outstanding - basic and diluted	50.9	53.6
Loss per share from continuing operations basic and diluted	$ (0.01)	$ (0.06)
Loss per share from discontinued operations basic and diluted	$ (0.11)	$ (0.07)
Net loss per share	$ (0.12)	$ (0.13)