Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016		Mar. 31, 2015
Beginning Balance	$ (318.1)		$ (190.5)
Other comprehensive (loss) income before reclassifications (1)	29.0		(64.1)
Amounts reclassified from AOCI	0.8		1.0
Investment income	4.9		7.9
Net current-period other comprehensive (loss) income	29.8		(63.1)
Balance at March 31, 2016	(288.3)		(253.6)
Translation adjustment
Beginning Balance	(215.6)		(74.9)
Other comprehensive (loss) income before reclassifications (1)	32.6	[1]	(68.6)	[2]
Amounts reclassified from AOCI	0.0		0.0
Net current-period other comprehensive (loss) income	32.6		(68.6)
Balance at March 31, 2016	(183.0)		(143.5)
Foreign Currency Hedges
Beginning Balance	5.0		(1.4)
Other comprehensive (loss) income before reclassifications (1)	(3.6)		4.3
Amounts reclassified from AOCI	0.0		0.0
Net current-period other comprehensive (loss) income	(3.6)		4.3
Balance at March 31, 2016	1.4		2.9
Interest Rate Hedges
Beginning Balance	(0.1)		(0.5)
Other comprehensive (loss) income before reclassifications (1)	0.0		0.2
Amounts reclassified from AOCI	(0.1)		(0.1)
Net current-period other comprehensive (loss) income	(0.1)		0.1
Balance at March 31, 2016	(0.2)		(0.4)
Pension and Other Post-retirement Benefits
Beginning Balance	(107.8)		(114.0)
Other comprehensive (loss) income before reclassifications (1)	0.0		0.0
Amounts reclassified from AOCI	0.9		1.1
Net current-period other comprehensive (loss) income	0.9		1.1
Balance at March 31, 2016	(106.9)		(112.9)
Other
Beginning Balance	0.4		0.3
Other comprehensive (loss) income before reclassifications (1)	0.0		0.0
Amounts reclassified from AOCI	0.0		0.0
Net current-period other comprehensive (loss) income	0.0		0.0
Balance at March 31, 2016	0.4		0.3
Translation adjustment
Other comprehensive (loss) income, translation adjustment, net of tax, attributable to noncontrolling interests	$ 0.2		$ 2.9

[1] Other comprehensive income (loss) before reclassifications within the translation component excludes $0.2 of translation attributable to noncontrolling interests.

[2] Other comprehensive (loss) income before reclassifications within the translation component excludes $2.9 of translation attributable to noncontrolling interests.