Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2012	Dec. 31, 2011
Assets:
Assets, Valuation Techniques	A	A
Fair Value Assets Measured on Recurring Basis Other Assets Assets Valuation Techniques	C	C
Liabilities:
Liabilities, Valuation Techniques	A	A
Fair Value, Inputs, Level 1 [Member]
Assets:
Foreign currency contracts	0	0
Insurance settlement agreement note receivable	0	0
Liabilities:
Foreign currency contracts	0	0
Commodity contracts	0
Net investment hedge contracts	0	0
Fair Value, Inputs, Level 2 [Member]
Assets:
Foreign currency contracts	2.6	2.7
Insurance settlement agreement note receivable	11.5	21.3
Liabilities:
Foreign currency contracts	1.8	2.9
Commodity contracts	0.1
Net investment hedge contracts	70.0	85.0
Fair Value, Inputs, Level 3 [Member]
Assets:
Foreign currency contracts	0	0
Insurance settlement agreement note receivable	0	0
Liabilities:
Foreign currency contracts	0	0
Commodity contracts	0
Net investment hedge contracts	0	0
Estimate of Fair Value, Fair Value Disclosure [Member]
Assets:
Foreign currency contracts	2.6	2.7
Insurance settlement agreement note receivable	11.5	21.3
Liabilities:
Foreign currency contracts	1.8	2.9
Commodity contracts	0.1
Net investment hedge contracts	70.0	85.0