Derivative Financial Instruments Effects of Derivative Instruments on Financial Position and Results of Operations (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 Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI	$ (0.6)	$ (1.3)	$ (4.4)	$ (4.4)
Amount of (Gain) Loss Reclassified from Accumulated OCI into Income	0.3	0.9	1.8	2.7
Net Investment Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI	(2.2)	3.6	0.2	(2.2)
Amount of (Gain) Loss Reclassified from Accumulated OCI into Income	0	0	0	0
Foreign Currency Hedge Contracts [Member] | Net Sales [Member] | Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI	0	0.2	0	(0.3)
Amount of (Gain) Loss Reclassified from Accumulated OCI into Income	0	0.1	0	0.3
Foreign Currency Hedge Contracts [Member] | Cost of Goods and Services Sold [Member] | Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI	(0.2)	0.7	0.2	0.2
Amount of (Gain) Loss Reclassified from Accumulated OCI into Income	0	0	0	0
Interest Rate Swap Contracts [Member] | Interest Expense [Member] | Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI	(0.4)	(2.2)	(1.8)	(4.3)
Amount of (Gain) Loss Reclassified from Accumulated OCI into Income	0.3	0.8	1.8	2.4
Forward treasury lock [Member] | Interest Expense [Member] | Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI			(2.8)	0
Amount of (Gain) Loss Reclassified from Accumulated OCI into Income			0	0
Foreign Currency - Denominated Debt [Member] | Foreign Exchange (Gains) Losses and Other [Member] | Net Investment Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI	(2.2)	3.6	0.2	(2.2)
Amount of (Gain) Loss Reclassified from Accumulated OCI into Income	$ 0	$ 0	$ 0	$ 0