Accumulated Other Comprehensive Loss, Net of Tax (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012	Dec. 31, 2012
Changes in Accumulated Other Comprehensive Loss, Net of Tax [Abstract]
Foreign currency translation adjustment, net of tax	$ (216.2)			$ (216.2)			$ (130.1)
Available-for-sale securities adjustment, net of tax	0.3			0.3			0.8
Derivative instruments, net of tax	(11.9)			(11.9)			(12.7)
Defined benefit pension and other postretirement plans, net of tax	(141.5)			(141.5)			(146.0)
Accumulated other comprehensive loss, net of tax	(369.3)			(369.3)			(288.0)
Foreign currency translation adjustment, before reclassifications and tax				(86.1)
Available-for-sale securities adjustment, before reclassifications and tax				0.7
Derivative instruments, before reclassifications and tax	0		(3.6)	0		(22.2)
Defined benefit pension and other postretirement plans, before reclassifications and tax				(0.9)
Other comprehensive (loss) income, before reclassifications and tax				(86.3)
Foreign currency translation adjustments, net of tax				0
Available-for-sale securities, net of tax				(1.2)
Derivative instruments, net of tax				0.8
Defined benefit pension and other postretirement plans, net of tax				5.4
Total amount reclassified from accumulated other comprehensive loss, net of tax	2.2			5.0
Foreign currency translation adjustments				(86.1)
Available-for-sale securities, net of tax	(0.1)		(25.0)	(0.5)		60.5
Derivative instruments, net of tax	0.3		(2.1)	0.8		(13.0)
Defined benefit pension and other postretirement plans, net of tax	1.7		1.1	4.5		4.0
Total other comprehensive loss, net of tax, portion attributable to parent				(81.3)
Reclassifications From Accumulated Other Comprehensive Income Loss [Abstract]
Foreign currency translation adjustments, before tax	0			0
Gains (losses) on available-for-sale securities	0		0	1.4		(0.6)
Losses on derivative instruments	(0.4)		0	(1.3)		0
Amortization of defined benefit pension and post retirement plan items	(2.7)	[1]	(2.0)	(8.2)	[1]	(5.7)
Tax effect	(0.9)			(3.1)
Total amount reclassified from accumulated other comprehensive loss, net of tax	$ 2.2			$ 5.0

[1] These accumulated other comprehensive loss components are included in the computation of net periodic cost. See Note 9 for further information.