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Objectives And Strategies For Using Derivatives (Schedule Of Fair Value Of All Derivative Instruments) (Details) (USD $)
In Millions
Jun. 30, 2011
Dec. 31, 2010
Assets $ 100 $ 70
Liabilities 64 48
Foreign Exchange Contracts [Member]
   
Assets 75 46
Liabilities 54 39
Interest Rate Contracts [Member]
   
Assets 25 24
Liabilities 6 2
Commodity Contracts [Member]
   
Liabilities $ 4 $ 7