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Derivative Financial Instruments And Commodity Hedging Activities (Amount And Location Of Gains (Losses) For Derivatives Not Designated As Hedges) (Detail) (Not Designated as Hedging Instrument, USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Derivative [Line Items]        
Amount of Gain or (Loss) Recognized in Income on Derivative $ (7.2) $ 0.2 $ (1.8) $ 4.0
Other Expense | Foreign Exchange Forward
       
Derivative [Line Items]        
Amount of Gain or (Loss) Recognized in Income on Derivative $ (7.2) $ 0.2 $ (1.8) $ 4.0