Other Expense, net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Details of other expense, net
Interest and dividend income	$ 3.2	$ 2.2	$ 6.6	$ 4.2
Net foreign exchange transaction losses	(6.3)	(3.1)	(10.1)	(7.5)
Settlement agreement and related costs	(0.1)	(0.2)	(0.2)	(0.6)
Other, net	(2.4)	(0.9)	(6.0)	(2.2)
Other expense, net	$ (5.6)	$ (2.0)	$ (9.7)	$ (6.1)