Other Income, net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Other Income, net
Translation effects-intercompany loans	$ (9.6)	$ (19.7)
Value of currency forward contracts-intercompany loans	8.1	16.5
Other currency transaction effects	1.1	1.7
Interest income	(0.1)	(0.3)
Net loss on sales of investments and disposals of assets	0.2	0.1
Other miscellaneous income	(0.3)	(0.5)
Total other income, net	$ (0.6)	$ (2.2)