Other Expense, net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Details of other expense, net
Interest and dividend income	$ 3.5	$ 2.0
Net foreign exchange transaction losses	(3.8)	(4.4)
Settlement agreement and related costs	(0.1)	(0.4)
Other, net	(3.7)	(1.1)
Other expense, net	$ (4.1)	$ (3.9)

Aggregate realized and unrealized loss on foreign currency transactions included in net income. Includes loss on a foreign currency forward exchange contract. Does not include foreign currency transactions designated as hedges of net investment in a foreign entity or intercompany foreign currency transactions that are of a long-term nature. Gross of tax effect.

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Income derived from investments in debt and equity securities and on cash and cash equivalents. Interest income represents earnings which reflect the time value of money or transactions in which the payments are for the use or forbearance of money. Dividend income represents a distribution of earnings to shareholders by investee companies.

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