Derivative Financial Instruments - Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosures [Line Items]
(Gain) loss on non-derivative instruments, net	$ (4.3)	$ (0.1)	$ (6.3)	$ 4.9
Other Nonoperating Income (Expense) [Member] | Foreign Exchange Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
(Gain) loss on non-derivative instruments, net	(4.4)	(0.3)	(6.3)	1.6
Interest Expense [Member] | Interest Rate Cap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
(Gain) loss on non-derivative instruments, net	$ 0.1	$ 0.2	$ 0.0	$ 3.3