Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details 3)

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Fair Value Measurements (Details 3) (USD $)
In Millions
Sep. 30, 2011
Dec. 31, 2010
Oct. 01, 2010
Carrying Value of Asset Immediately Before Impairment
Assets measured at fair value on a nonrecurring basis      
Available-for-sale securities     $ 131
Other fair value disclosures      
Long-term debt, including the current portion, carrying amount 15,790 15,317  
Long-term debt, including the current portion, fair value $ 16,289 $ 15,346