Interest and Other Income (Expense), Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Interest and Other Income (Expense), Net
Interest expense, net	$ (3.0)	$ (3.2)	$ (9.2)	$ (9.3)
Exchange (losses) gains on foreign currency transactions	(2.1)	0.5	(5.4)	(1.1)
Gain (loss) on disposal of product line		8.7	(0.2)	9.0
Other	0.5	(1.9)	0.5	(1.7)
Interest and other income (expense), net	$ (4.6)	$ 4.1	$ (14.3)	$ (3.1)