Restructuring And Other Charges (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 8.6	$ 14.1	$ 11.4
European Segment [Member]
Restructuring Cost and Reserve [Line Items]
Staff reductions charges	5.8
Severance costs			0.8
North American Segment [Member]
Restructuring Cost and Reserve [Line Items]
Costs associated with the relocation of certain administrative and production activities	1.7
Voluntary retirement incentive program			9.6
Stay bonuses and other costs		3.8
International Segment [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	1.1	1.5	1.0
Germany Voluntary Retirement Incentive Program [Member] | European Segment [Member]
Restructuring Cost and Reserve [Line Items]
Voluntary retirement incentive program		$ 8.8