Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Estimate of Fair Value, Fair Value Disclosure [Member]
Assets, Fair Value Disclosure [Abstract]
Foreign currency contracts	$ 5.9	$ 2.7
Other non-current assets (insurance settlement agreement note receivable)	41.0	21.3
Liabilities, Fair Value Disclosure [Abstract]
Foreign currency contracts	9.8	2.9
Net investment hedge contracts	58.1	85.0
Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Foreign currency contracts	0	0
Other non-current assets (insurance settlement agreement note receivable)	0	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	5.9	2.7
Other non-current assets (insurance settlement agreement note receivable)	41.0	21.3
Liabilities, Fair Value Disclosure [Abstract]
Foreign currency contracts	9.8	2.9
Net investment hedge contracts	58.1	85.0
Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Foreign currency contracts	0	0
Other non-current assets (insurance settlement agreement note receivable)	0	0
Liabilities, Fair Value Disclosure [Abstract]
Foreign currency contracts	0	0
Net investment hedge contracts	$ 0	$ 0