Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			$ (350.4)
Other comprehensive income (loss), net of tax	$ 31.4	$ (13.6)	72.9	$ 0.2
Accumulated other comprehensive income (loss), ending balance	(278.5)		(278.5)
Unrealized Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(292.2)	(232.8)
Current year deferrals to AOCI			66.8	2.3
Reclassifications from AOCI to Net income (loss)			0.0	0.0
Other comprehensive income (loss), net of tax			66.8	2.3
Accumulated other comprehensive income (loss), ending balance	(225.4)	(230.5)	(225.4)	(230.5)
Pension Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(56.6)	(33.4)
Current year deferrals to AOCI			0.0	0.0
Reclassifications from AOCI to Net income (loss)			6.2	(0.5)
Other comprehensive income (loss), net of tax			6.2	(0.5)
Accumulated other comprehensive income (loss), ending balance	(50.4)	(33.9)	(50.4)	(33.9)
Unrealized Gain (Loss) on Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			0.4	0.1
Current year deferrals to AOCI			(0.3)	(0.3)
Reclassifications from AOCI to Net income (loss)			0.0	0.0
Other comprehensive income (loss), net of tax			(0.3)	(0.3)
Accumulated other comprehensive income (loss), ending balance	0.1	(0.2)	0.1	(0.2)
Unrealized Gain (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(2.0)	(3.2)
Current year deferrals to AOCI			(2.4)	(2.1)
Reclassifications from AOCI to Net income (loss)			1.6	1.0
Other comprehensive income (loss), net of tax			(0.8)	(1.1)
Accumulated other comprehensive income (loss), ending balance	(2.8)	(4.3)	(2.8)	(4.3)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(350.4)	(269.3)
Current year deferrals to AOCI			64.1	(0.1)
Reclassifications from AOCI to Net income (loss)			7.8	0.5
Other comprehensive income (loss), net of tax			71.9	0.4
Accumulated other comprehensive income (loss), ending balance	$ (278.5)	$ (268.9)	$ (278.5)	$ (268.9)