Interest and Other Income (Expense), Net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Interest and Other Income (Expense), Net
Interest expense, net	$ (3.1)	$ (3.5)	$ (6.2)	$ (6.8)
Exchange gains (losses) on foreign currency transactions	(4.7)	0.7	(5.1)	(2.3)
Gain on disposal of product line			0.9
Other			(1.3)	(1.2)
Interest and other income (expense), net	$ (7.8)	$ (2.8)	$ (11.7)	$ (10.3)