Shareholders' Equity (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Other Comprehensive (Loss) Income [Roll Forward]
Balance as of beginning of period	[1]			$ 1,905.9	$ 1,859.4
Other comprehensive (loss)	[1]	$ (22.4)	$ (28.5)	(30.7)	(39.1)
Balance as of end of period	[1]	1,976.8	1,864.4	1,976.8	1,864.4
Foreign Currency Translation Adjustments
Other Comprehensive (Loss) Income [Roll Forward]
Balance as of beginning of period				(108.7)	(59.2)
Other comprehensive (loss)				(27.9)	(38.1)
Less: Net other comprehensive (loss) income attributable to noncontrolling interest				(1.8)	4.6
Balance as of end of period		(134.8)	(101.9)	(134.8)	(101.9)
Derivative Instruments
Other Comprehensive (Loss) Income [Roll Forward]
Balance as of beginning of period				(0.8)	0.0
Other comprehensive (loss)				(2.8)	(1.1)
Less: Net other comprehensive (loss) income attributable to noncontrolling interest				0.0	0.0
Balance as of end of period		(3.6)	(1.1)	(3.6)	(1.1)
Accumulated Other Comprehensive Loss
Other Comprehensive (Loss) Income [Roll Forward]
Balance as of beginning of period				(109.5)	(59.2)
Other comprehensive (loss)				(30.7)	(39.2)
Less: Net other comprehensive (loss) income attributable to noncontrolling interest				(1.8)	4.6
Balance as of end of period		$ (138.3)	$ (103.0)	$ (138.3)	$ (103.0)

[1] Amounts may not add due to rounding