Accumulated Other Comprehensive Loss, Net of Tax (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Changes in Accumulated Other Comprehensive Loss, Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	$ (167.7)		$ (130.1)
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	0.3		0.8
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	(12.5)		(12.7)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(145.5)		(146.0)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(325.4)		(288.0)
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustments, before Reclassifications and Tax	(37.6)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Reclassifications and Tax	0.4
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Reclassifications and Tax	0	(2.8)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans Adjustments, before Reclassifications and Tax	(1.6)
Other Comprehensive Income (Loss), before Reclassifications and Tax	(38.8)
Reclassifications from accumulated other comprehensive loss into earnings, foreign currency translation adjustments, net of tax	0
Reclassifications from accumulated other comprehensive loss into earnings, available-for-sale securities, net of tax	(0.9)
Reclassifications from accumulated other comprehensive loss into earnings, derivatives, net of tax	0.2
Reclassifications from accumulated other comprehensive loss into earnings, pension and other postretirement plans, net of tax	2.1
Reclassifications from accumulated other comprehensive loss to earnings, net of tax	1.4
Foreign currency translation adjustments	(37.6)
Available-for-sale securities, Net of tax	(0.5)	1.1
Derivative instruments, Net of tax	0.2	(2.8)
Defined benefit pension and other postretirement plans, Net of tax	0.5	1.0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(37.4)
Reclassifications From Accumulated Other Comprehensive Income Loss [Abstract]
Amount reclassified from accumulated other comprehensive loss into earnings, foreign currency translation adjustments, before tax	0
Amount reclassified from accumulated other comprehensive loss into earnings, available-for-sale securities, before tax	(1.0)	0.6
Amount reclassified from accumulated other comprehensive loss into earnings, derivatives, before tax	0.4	0
Amount reclassified from accumulated other comprehensive loss into earnings, pension and other postretirement plans, before tax	2.8	1.9
Other Comprehensive Income (Loss), Tax	(0.8)
Reclassifications from accumulated other comprehensive loss to earnings, net of tax	$ 1.4