Derivative Financial Instruments - Schedule of Derivative Instruments in Statement of Financial Position, Fair Value (Details) - Fair Value, Inputs, Level 2 [Member] - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative asset	$ 0.8	$ 5.9
Derivative liability	2.2	1.5
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative asset	0.8	5.9
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liability	2.2	1.5
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative asset	0.8	0.1
Not Designated as Hedging Instrument [Member] | Interest Rate Cap [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative asset	0.1	0.1
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative asset	$ 0.7	$ 0.0