Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Assets, Fair Value Disclosure [Abstract]
Fair Value, Derivative Assets, Valuation Techniques	A	A
Fair Value Assets Measured on Recurring Basis Other Assets Assets Valuation Techniques	C
Liabilities, Fair Value Disclosure [Abstract]
Fair Value, Derivative Financial Instruments, Liabilities, Valuation Techniques	A	A
Estimate of Fair Value, Fair Value Disclosure [Member]
Assets, Fair Value Disclosure [Abstract]
Foreign currency contracts	2.7	2.7
Insurance settlement agreement note receivable	21.3
Liabilities, Fair Value Disclosure [Abstract]
Foreign currency contracts	2.9	6.4
Net investment hedge contracts	85.0	75.7
Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Foreign currency contracts	0	0
Insurance settlement agreement note receivable	0
Liabilities, Fair Value Disclosure [Abstract]
Foreign currency contracts	0	0
Net investment hedge contracts	0	0
Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Foreign currency contracts	2.7	2.7
Insurance settlement agreement note receivable	21.3
Liabilities, Fair Value Disclosure [Abstract]
Foreign currency contracts	2.9	6.4
Net investment hedge contracts	85.0	75.7
Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Foreign currency contracts	0	0
Insurance settlement agreement note receivable	0
Liabilities, Fair Value Disclosure [Abstract]
Foreign currency contracts	0	0
Net investment hedge contracts	0	0