v2.4.0.6
Cash Flow Information (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Cash payments    
Interest $ 596 $ 739
Income taxes 6,394 7,145
Net Purchases of Short-Term Investments    
Short-term investments purchased (497) (6,642)
Short-term investments sold 1,094 5,019
Net sale (purchases) of short-term investments $ 597 $ (1,623)