Derivative Instruments, Gain (Loss) by Hedging Relationship, Income Statement Location (Details) (Foreign Exchange Contracts [Member], USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Total pre-tax gain (loss)	$ 8.2	$ 7.6	$ 2.8	$ 13.2
Cost of Sales [Member] | Derivatives Designated as Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total pre-tax gain (loss)	3.0	0	1.7	(0.5)
Cost of Sales [Member] | Derivatives not Designated as Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total pre-tax gain (loss)	6.6	0	2.5	0.5
Other Costs [Member] | Derivatives not Designated as Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total pre-tax gain (loss)	$ (1.4)	$ 7.6	$ (1.4)	$ 13.2