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 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Derivatives, Fair Value [Line Items]        
Amount of Gain/(Loss) Recognized in Income on Derivative $ 7.2 $ 140.9 $ 28.4 $ 180.6
Foreign Exchange Contract [Member] | Other Income (Expense) [Member]
        
Derivatives, Fair Value [Line Items]        
Amount of Gain/(Loss) Recognized in Income on Derivative 0 0 0 0.3
Customer Supply Agreements [Member] | Product Revenues [Member]
        
Derivatives, Fair Value [Line Items]        
Amount of Gain/(Loss) Recognized in Income on Derivative 35.4 42.6 59.5 82.0
Provisional Pricing Arrangements [Member] | Product Revenues [Member]
        
Derivatives, Fair Value [Line Items]        
Amount of Gain/(Loss) Recognized in Income on Derivative $ (28.2) $ 98.3 $ (31.1) $ 98.3