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Derivative Financial Instruments (Schedule Of Derivative Instruments, Gains/(Losses) In Statement Of Financial Performance) (Details) (USD $)
In Millions
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Foreign Exchange Contracts [Member] | Cash Flow Hedging [Member]
    
Effective portion recognized in other comprehensive loss, net of taxes$ (79)$ 84$ (20)$ 48
Commodity Contracts [Member] | Cash Flow Hedging [Member]
    
Effective portion recognized in other comprehensive loss, net of taxes(12)(19)(26)(43)
Foreign Exchange Contracts [Member]
    
Forward points recognized in earnings24(22)30(14)
Undesignated derivatives recognized in Other income/ (expense), net$ 8$ (1)$ 19$ (23)