Derivative Financial Instruments and Risk Management - Location and Amount of Gain (Loss) on Foreign Currency Derivatives (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in Income on Derivatives	$ (0.8)	$ 2.0	$ (3.8)	$ 2.8
Remeasurement of assets and liabilities in foreign currencies	0.7	(1.0)	2.2	(1.9)
Net (loss) Gain on foreign currency transactions	(0.1)	1.0	(1.6)	0.9
Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in Income on Derivatives	(0.8)	1.3	(4.3)	1.2
Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in Income on Derivatives	(0.1)	0.0	0.1	0.7
Other expense (income), net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in Income on Derivatives	$ 0.1	$ 0.7	$ 0.4	$ 0.9