Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule Of Derivatives Not Designated As Hedging Instruments) (Details)

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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule Of Derivatives Not Designated As Hedging Instruments) (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Derivatives, Fair Value [Line Items]    
Amount of Gain/(Loss) Recognized in Income on Derivative $ 21.2 $ 42.5
Foreign Exchange Contract [Member] | Other Income (Expense) [Member]
    
Derivatives, Fair Value [Line Items]    
Amount of Gain/(Loss) Recognized in Income on Derivative 0 0.3
Customer Supply Agreements [Member] | Product Revenues [Member]
    
Derivatives, Fair Value [Line Items]    
Amount of Gain/(Loss) Recognized in Income on Derivative 24.1 39.2
Provisional Pricing Arrangements [Member] | Product Revenues [Member]
    
Derivatives, Fair Value [Line Items]    
Amount of Gain/(Loss) Recognized in Income on Derivative $ (2.9) $ 3.0