Derivative Instruments - Schedule of Gains and Losses Recognized on the Balance Sheet for Derivative Instruments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in Accumulated Other Comprehensive Income (Loss)	$ (3.0)	$ (33.4)
Recognized in Earnings	(10.2)	(2.2)
Cross-currency swap agreements | Derivatives designated as hedges:
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in Accumulated Other Comprehensive Income (Loss)	(4.1)	(32.8)
Recognized in Earnings	0.0	0.0
Interest rate swaps | Derivatives designated as hedges:
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in Accumulated Other Comprehensive Income (Loss)	0.5	1.1
Recognized in Earnings	0.0	0.0
Interest rate swaps | Derivatives not designated as hedges:
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in Accumulated Other Comprehensive Income (Loss)	0.0	0.0
Recognized in Earnings	0.0	0.2
Foreign currency option and forward contracts | Derivatives not designated as hedges:
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in Accumulated Other Comprehensive Income (Loss)	0.0	0.0
Recognized in Earnings	(10.2)	(2.4)
Foreign currency denominated notes
Derivative Instruments, Gain (Loss) [Line Items]
Recognized in Accumulated Other Comprehensive Income (Loss)	0.6	(1.7)
Recognized in Earnings	$ 0.0	$ 0.0