Basis of Presentation and Summary of Significant Accounting Policies (Schedule of Accumulated Other Income (Loss)) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Translation adjustments	$ (25.6)	$ 0.5	$ (3.7)
Pension and other postretirement benefit liability adjustments, net of tax of $7.5 million, $(30.0) million and $0.0 million at December 31, 2011, 2010 and 2009, respectively	(12.1)	52.2	0
Accumulated other comprehensive income (loss)	(37.7)	52.7	(3.7)
Pension and other postretirement benefit liability adjustments, tax	(7.5)	30.0	0
Foreign Currency Transaction Gain (Loss), before Tax	$ (4.5)	$ (6.8)	$ (3.0)