(Loss) Earnings per Common Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Earnings Per Share [Abstract]
Net loss	$ (6.3)	$ (14.1)	$ (30.5)	$ (33.8)
Weighted average number of common shares outstanding during period	37.4	37.5	37.6	37.8
Dilutive effect of stock-based compensation plans (in shares)	0	0	0	0
Weighted average number of diluted shares outstanding during the period	37.4	37.5	37.6	37.8
(Loss) earnings per common share - basic (dollars per share)	$ (0.17)	$ (0.38)	$ (0.81)	$ (0.89)
(Loss) earnings per common share - diluted (dollars per share)	$ (0.17)	$ (0.38)	$ (0.81)	$ (0.89)
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive options excluded from calculation (in shares)	6.5	6.2	6.2	5.0