Derivative Financial Instruments and Risk Management - Location and Amount of Gain (Loss) on Foreign Currency Derivatives (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Recognized in Income on Derivatives	$ (1.0)	$ 0.2
Remeasurement of assets and liabilities in foreign currencies	0.1	(0.3)
Net loss on foreign currency transactions	(0.9)	(0.1)
Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Recognized in Income on Derivatives	(1.7)	0.1
Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Recognized in Income on Derivatives	0.6	(0.1)
Other expense (income), net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Recognized in Income on Derivatives	$ 0.1	$ 0.2