Derivatives by Income Statement Location (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Change in AOCI Gain / (Loss)	$ (0.1)	$ (10.2)	$ (2.1)	$ (5.8)
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member] | Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain /(Loss) Reclassified from AOCI into Income (Effective Portion)	0	1.4	1.6	4.6
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain / (Loss) Recognized in Income on Derivatives	0.3	3.6	(1.4)	2.9
Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Other Income Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain / (Loss) Recognized in Income on Derivatives	0	0.1	(0.1)	0.4
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Income Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain / (Loss) Recognized in Income on Derivatives	$ 0.3	$ 3.5	$ (1.3)	$ 2.5