Quarterly report pursuant to Section 13 or 15(d)

Gains (losses) relating to derivative instruments recorded to income (Detail)

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Gains (losses) relating to derivative instruments recorded to income (Detail) (Selling, General and Administrative Expenses, USD $)
In Millions, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Designated as Hedging Instrument | Foreign Exchange Currency Contracts Relating To Inventory Hedges And Intercompany Management Fee Hedges
        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of gain (loss) recognized in income $ (0.7) [1] $ (0.3) [1] $ (0.6) [1] $ (0.3) [1]
Derivatives not designated as hedging instruments | Foreign exchange currency contracts
        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of gain (loss) recognized in income $ (0.8) $ 2.7 $ (11.6) $ 3.8
[1] For foreign exchange contracts designated as hedging instruments, the amounts recognized in income (loss) represent the amounts excluded from the assessment of hedge effectiveness. There were no ineffective amounts recorded for derivatives designated as hedging instruments.