Derivatives and Hedging Activities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Sep. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Dec. 31, 2015
Forward Currency Forward Contracts [Abstract]
Unrealized Gain on Foreign Currency Derivatives, before Tax	$ (2.9)		$ 0.6
Unrealized Gain (Loss) on Price Risk Cash Flow Derivatives, before Tax	(2.9)		$ 0.6
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net		$ 0.9		$ 0.7
Foreign Currency Fair Value Hedge Asset at Fair Value	0.2				$ 2.2
Derivative, Notional Amount	224.5				235.7
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments		(4.6)		13.4
Foreign Currency Fair Value Hedge Liability at Fair Value	2.2				0.2
Derivative Instruments in Hedges, Assets, at Fair Value	0.2				2.2
Derivative Instruments in Hedges, Liabilities, at Fair Value	2.2				0.2
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	2.9				6.0
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value	1.7				0.2
Derivative Asset	3.1				8.2
Derivative Liability	$ 3.9				$ 0.4
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net		0.8		0.6
Derivative Instruments Not Designated as Hedging Instruments, Gain		(4.6)		13.4
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net		$ (0.1)		$ (0.1)