Derivatives and Hedging Activities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative, Notional Amount	$ 338.2		$ 338.2		$ 282.8
Foreign Currency Fair Value Hedge Asset at Fair Value		$ 0.2		$ 0.2	2.3
Derivative Instruments in Hedges, Assets, at Fair Value		0.2		0.2	2.3
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value		1.0		1.0	7.6
Derivative Asset		1.2		1.2	9.9
Foreign Currency Fair Value Hedge Liability at Fair Value		2.3		2.3	0.5
Derivative Instruments in Hedges, Liabilities, at Fair Value		2.3		2.3	0.5
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value		3.4		3.4	1.6
Derivative Liability		5.7		5.7	$ 2.1
Unrealized Gain on Foreign Currency Derivatives, before Tax	(2.0)	(0.9)	(3.1)	(2.0)
Unrealized Gain (Loss) on Price Risk Cash Flow Derivatives, before Tax	(2.0)	0.9	(3.1)	(2.0)
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	0.4	(0.1)	0.7	0.8
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	(0.1)	(0.1)	(0.2)	(0.2)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	0.3	(0.2)	0.5	0.6
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	(7.2)	0.3	(8.3)	4.3
Derivative Instruments Not Designated as Hedging Instruments, Gain	$ (7.2)	$ (0.3)	$ (8.3)	$ (4.3)