Derivative Financial Instruments - Effect of Designated Cash Flow Hedges on the Financial Statements (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Foreign Currency Forward [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	$ (0.3)	$ 0.6	$ 0.2	$ (0.4)
Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	0.0	0.0	0.3	0.2
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	(1.3)	1.3	(11.8)	9.7
Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	0.2	$ (0.4)	1.0	$ (0.4)
Cross Currency Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	4.2		5.2
Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	$ 0.4		$ 1.4