Interest and Other Income (Expense), Net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Interest and Other Income (Expense), Net
Interest expense, net	$ (3.1)	$ (3.1)	$ (6.2)	$ (6.1)
Exchange losses on foreign currency transactions	(2.9)		(3.3)	(1.6)
Gain (loss) on disposal of product line	(0.2)		(0.2)	0.3
Other		0.8		0.2
Interest and other income (expense), net	$ (6.2)	$ (2.3)	$ (9.7)	$ (7.2)