Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			$ (103.3)
Other comprehensive income (loss), net of tax	$ 25.5	$ (6.4)	(87.0)	$ (9.4)
Accumulated other comprehensive income (loss), ending balance	(190.1)		(190.1)
Unrealized Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(72.1)	24.3
Current year deferrals to AOCI			(82.1)	(9.9)
Reclassifications from AOCI to Net income			0.0	0.0
Other comprehensive income (loss), net of tax			(82.1)	(9.9)
Accumulated other comprehensive income (loss), ending balance	(154.2)	14.4	(154.2)	14.4
Pension and Other Long-term Employee Benefit Adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(31.2)	7.5
Current year deferrals to AOCI			(3.1)	4.7
Reclassifications from AOCI to Net income			0.8	(0.8)
Other comprehensive income (loss), net of tax			(2.3)	3.9
Accumulated other comprehensive income (loss), ending balance	(33.5)	11.4	(33.5)	11.4
Unrealized Gain (Loss) on Securities [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(0.2)	(0.9)
Current year deferrals to AOCI			0.4	0.8
Reclassifications from AOCI to Net income			0.0	0.0
Other comprehensive income (loss), net of tax			0.4	0.8
Accumulated other comprehensive income (loss), ending balance	0.2	(0.1)	0.2	(0.1)
Unrealized Gain (Losses) on Derivatives [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			0.2	3.1
Current year deferrals to AOCI			0.4	0.1
Reclassifications from AOCI to Net income			(3.2)	(3.2)
Other comprehensive income (loss), net of tax			(2.8)	(3.1)
Accumulated other comprehensive income (loss), ending balance	(2.6)	0.0	(2.6)	0.0
Accumulated Other Comprehensive Income (loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance			(103.3)	34.0
Current year deferrals to AOCI			(84.4)	(4.3)
Reclassifications from AOCI to Net income			(2.4)	(4.0)
Other comprehensive income (loss), net of tax			(86.8)	(8.3)
Accumulated other comprehensive income (loss), ending balance	$ (190.1)	$ 25.7	$ (190.1)	$ 25.7