Interest and Other Income (Expense), Net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Interest and Other Income (Expense), Net
Interest expense, net	$ (3.1)	$ (3.1)	$ (6.1)	$ (6.2)
Exchange gains (losses) on foreign currency transactions		(4.7)	(1.6)	(5.1)
Gain on disposal of product line			0.3	0.9
Other	0.8		0.2	(1.3)
Interest and other income (expense), net	$ (2.3)	$ (7.8)	$ (7.2)	$ (11.7)