Interest and Other Income (Expense), Net (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
Interest and Other Income (Expense), Net
Interest expense, net	$ (3.2)	$ (3.4)	$ (9.4)	$ (10.2)
Exchange losses on foreign currency transactions	(1.7)	(2.1)	(6.8)	(4.2)
Gain on disposal of product line		2.2	0.9	2.2
Other	0.2	0.6	(1.1)	(0.8)
Interest and other income (expense), net	$ (4.7)	$ (2.7)	$ (16.4)	$ (13.0)