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Financing Arrangements and Derivative Financial Instruments Schedule of cash flow foreign exchange contracts Statement of Financial Performance (Details) (USD $)
In Millions
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Derivative Instruments, (Gain) Loss [Line Items]    
Unrealized (Gain) Loss on Foreign Currency Derivatives, Net, before Tax$ (14)$ 0$ 0$ 0
Foreign Currency Cash Flow Hedge (Gain) Loss Reclassified to Earnings, Net7090
(Gain) Loss on Components Excluded from Assessment of Foreign Currency Cash Flow Hedge Effectiveness$ 2$ 0$ 2$ 0