Effects of Derivative Instruments on OCI and Earnings (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI	$ (0.4)	$ (1.6)	$ 1.1	$ (3.6)
Amount of (gain) loss reclassified from accumulated OCI into income	0.0	1.0	1.4	1.8
Net Investment Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI	0.2	(0.5)	0.7	(1.7)
Amount of (gain) loss reclassified from accumulated OCI into income	0.0	0.0	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	0.1	(0.7)	0.2	(1.6)
Amount of (gain) loss reclassified from accumulated OCI into income	0.0	0.4	0.8	0.7
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	(0.5)	(0.9)	0.9	(2.0)
Amount of (gain) loss reclassified from accumulated OCI into income	(0.1)	0.3	0.4	0.4
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	0.0	0.0	0.0	0.0
Amount of (gain) loss reclassified from accumulated OCI into income	0.0	0.2	0.0	0.5
Forward Treasury Locks [Member] | Interest expense [Member] | Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI	0.0	0.0	0.0	0.0
Amount of (gain) loss reclassified from accumulated OCI into income	0.1	0.1	0.2	0.2
Foreign Currency - Denominated Debt [Member] | Other expense [Member] | Net Investment Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI	0.2	(0.5)	0.7	(1.7)
Amount of (gain) loss reclassified from accumulated OCI into income	$ 0.0	$ 0.0	$ 0.0	$ 0.0