Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2015		Jun. 30, 2014		Jun. 30, 2015		Jun. 30, 2014
Beginning Balance	$ (253.6)		$ (46.4)		$ (190.5)		$ (54.3)
Other comprehensive (loss) income before reclassifications (1)	5.3		9.1		(58.8)		16.6
Amounts reclassified from AOCI	1.1		0.0		2.1		0.4
Unrealized loss on securities (net of tax $0.0, $0.2, $0.0 and $0.2, respectively)	6.8		10.0		14.7		18.7
Net current-period other comprehensive (loss) income	6.4		9.1		(56.7)		17.0
Balance at June 30, 2015	(247.2)		(37.3)		(247.2)		(37.3)
Translation adjustment [Member]
Beginning Balance	(143.5)		7.6		(74.9)		(2.4)
Other comprehensive (loss) income before reclassifications (1)	6.2	[1]	11.4	[2]	(62.4)	[3]	21.4	[4]
Amounts reclassified from AOCI	0.0		0.0		0.0		0.0
Net current-period other comprehensive (loss) income	6.2		11.4		(62.4)		21.4
Balance at June 30, 2015	(137.3)		19.0		(137.3)		19.0
Foreign Currency Hedges
Beginning Balance	2.9		(3.5)		(1.4)		(1.9)
Other comprehensive (loss) income before reclassifications (1)	(1.0)		(2.0)		3.3		(3.6)
Amounts reclassified from AOCI	0.0		0.0		0.0		0.0
Net current-period other comprehensive (loss) income	(1.0)		(2.0)		3.3		(3.6)
Balance at June 30, 2015	1.9		(5.5)		1.9		(5.5)
Interest Rate Hedges
Beginning Balance	(0.4)		(0.9)		(0.5)		(1.0)
Other comprehensive (loss) income before reclassifications (1)	0.1		0.1		0.3		0.3
Amounts reclassified from AOCI	0.0		0.0		(0.1)		(0.1)
Net current-period other comprehensive (loss) income	0.1		0.1		0.2		0.2
Balance at June 30, 2015	(0.3)		(0.8)		(0.3)		(0.8)
Pension and Other Post-retirement Benefits
Beginning Balance	(112.9)		(51.5)		(114.0)		(52.0)
Other comprehensive (loss) income before reclassifications (1)	0.0		0.0		0.0		0.0
Amounts reclassified from AOCI	1.1		0.4		2.2		0.9
Net current-period other comprehensive (loss) income	1.1		0.4		2.2		0.9
Balance at June 30, 2015	(111.8)		(51.1)		(111.8)		(51.1)
Unrealized Gain on Securities, Net
Beginning Balance			1.6				2.7
Other comprehensive (loss) income before reclassifications (1)			(0.4)				(1.5)
Net current-period other comprehensive (loss) income			(0.8)				(1.9)
Balance at June 30, 2015			0.8				0.8
Other
Beginning Balance	0.3		0.3		0.3		0.3
Other comprehensive (loss) income before reclassifications (1)	0.0		0.0		0.0		0.0
Amounts reclassified from AOCI	0.0		0.0		0.0		0.0
Net current-period other comprehensive (loss) income	0.0		0.0		0.0		0.0
Balance at June 30, 2015	0.3		0.3		0.3		0.3
Translation adjustment [Member]
Other comprehensive (loss) income, translation adjustment, net of tax, attributable to noncontrolling interests	$ 0.1		$ (0.1)		$ 0.3		$ (0.6)

[1] Other comprehensive income (loss) before reclassifications within the translation component excludes $0.1 of translation attributable to noncontrolling interests.

[2] Other comprehensive income (loss) before reclassifications within the translation component excludes $(0.1) of translation attributable to noncontrolling interests.

[3] Other comprehensive (loss) income before reclassifications within the translation component excludes $0.3 of translation attributable to noncontrolling interests.

[4] Other comprehensive income (loss) before reclassifications within the translation component excludes $(0.6) of translation attributable to noncontrolling interests.