Interest and Other Income (Expense), Net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Interest and Other Income (Expense), Net
Interest expense, net	$ (3.2)	$ (3.2)	$ (9.3)	$ (9.4)
Exchange gains (losses) on foreign currency transactions	0.5	(1.7)	(1.1)	(6.8)
Gain on disposal of product line	8.7		9.0	0.9
Other	(1.9)	0.2	(1.7)	(1.1)
Interest and other income (expense), net	$ 4.1	$ (4.7)	$ (3.1)	$ (16.4)