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Note 17: Financial Instruments (Detail) - Derivatives Not Designated as Hedging Instruments (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Foreign exchange contracts $ 4 $ 10 $ (4) $ 10