Details of Other Income (Expense), Net (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Component of Other Expense, Nonoperating [Line Items]
Interest and dividend income	$ 3.5	$ 1.5	$ 10.2	$ 5.7
Net foreign exchange transaction (losses) gains	(0.8)	1.3	(10.8)	(6.2)
Gains from foreign currency forward contracts related to the closing of the acquisition of Diversey.				6.3
Settlement agreement related costs	(0.4)	(0.2)	(0.6)	(0.8)
Other, net	(1.1)	(2.1)	(7.3)	(4.3)
Other income (expense), net	1.2	6.8	(8.5)	0.7
Diversey [Member]
Component of Other Expense, Nonoperating [Line Items]
Gains from foreign currency forward contracts related to the closing of the acquisition of Diversey.		$ 6.3		$ 6.3

The aggregate foreign currency transaction gain (loss) (both realized and unrealized) included in determining net income for the reporting period. Excludes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements. For certain enterprises, primarily banks, that are dealers in foreign exchange, foreign currency transaction gains (losses) may be disclosed as dealer gains (losses).

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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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