Interest and Other Income (Expense), Net (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Interest and Other Income (Expense), Net
Interest income	$ 0.2	$ 0.2	$ 0.4	$ 0.3
Interest expense	(1.6)	(1.3)	(3.1)	(2.8)
Exchange losses on foreign currency transactions	(3.8)	(2.4)	(6.7)	(1.9)
Other	(0.5)	(0.7)	(1.3)	(0.1)
Interest and other income (expense), net	$ (5.7)	$ (4.2)	$ (10.7)	$ (4.5)