Accumulated Other Comprehensive Loss (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Beginning Balance	$ (190.5)	$ (54.3)
Other comprehensive (loss) income before reclassifications (1)	(64.1)	7.5
Amounts reclassified from AOCI	1.0	0.4
Net current-period other comprehensive (loss) income	(63.1)	7.9
Balance at March 31, 2015	(253.6)	(46.4)
Translation
Beginning Balance	(74.9)	(2.4)
Other comprehensive (loss) income before reclassifications (1)	(68.6)	10.0	[1]
Amounts reclassified from AOCI	0	0
Net current-period other comprehensive (loss) income	(68.6)	10.0
Balance at March 31, 2015	(143.5)	7.6
Other comprehensive (loss) income, translation adjustment, net of tax, attributable to noncontrolling interests	2.9	(0.5)
Foreign Currency Hedges
Beginning Balance	(1.4)	(1.9)
Other comprehensive (loss) income before reclassifications (1)	4.3	(1.6)
Amounts reclassified from AOCI	0	0
Net current-period other comprehensive (loss) income	4.3	(1.6)
Balance at March 31, 2015	2.9	(3.5)
Interest Rate Hedges
Beginning Balance	(0.5)	(1.0)
Other comprehensive (loss) income before reclassifications (1)	0.2	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, 2015	(0.4)	(0.9)
Pension and Other Post-retirement Benefits
Beginning Balance	(114.0)	(52.0)
Other comprehensive (loss) income before reclassifications (1)	0	0
Amounts reclassified from AOCI	1.1	0.5
Net current-period other comprehensive (loss) income	1.1	0.5
Balance at March 31, 2015	(112.9)	(51.5)
Unrealized Gain on Securities, Net
Beginning Balance		2.7
Other comprehensive (loss) income before reclassifications (1)		(1.1)
Amounts reclassified from AOCI		0
Net current-period other comprehensive (loss) income		(1.1)
Balance at March 31, 2015		1.6
Other
Beginning Balance	0.3	0.3
Other comprehensive (loss) income before reclassifications (1)	0	0
Amounts reclassified from AOCI	0	0
Net current-period other comprehensive (loss) income	0	0
Balance at March 31, 2015	$ 0.3	$ 0.3

[1] Other comprehensive income before reclassifications within the translation component excludes $(0.5) of translation attributable to noncontrolling interests.