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Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities (Derivatives Not Designated as Hedging Instruments Disclosure) (Details)

 v2.3.0.11
Derivative Instruments and Hedging Activities (Derivatives Not Designated as Hedging Instruments Disclosure) (Details) (USD $)
In Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Amount of Gain/(Loss) Recognized in Income on Derivative $ 387.0 $ 429.9 $ 488.2 $ 797.1
Customer Supply Agreements [Member] | Product Revenues [Member]
 Ìý Ìý Ìý Ìý
Amount of Gain/(Loss) Recognized in Income on Derivative 46.5 48.4 71.1 68.3
Product Revenues [Member] | Foreign Exchange Contract [Member]
 Ìý Ìý Ìý Ìý
Amount of Gain/(Loss) Recognized in Income on Derivative 2.6 2.2 3.2 5.0
Foreign Exchange Contract [Member] | Other Income (Expense) [Member]
 Ìý Ìý Ìý Ìý
Amount of Gain/(Loss) Recognized in Income on Derivative 48.5 (10.0) 104.5 (7.7)
Product Revenues [Member] | Provisional Pricing Arrangements [Member]
 Ìý Ìý Ìý Ìý
Amount of Gain/(Loss) Recognized in Income on Derivative $ 289.4 $ 389.3 $ 309.4 $ 731.5