v2.4.0.6
Derivative and Financial Instruments - Financial Instruments (Details 6) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Sep. 30, 2011
Dec. 31, 2010
Financial Instruments        
Cash $ 636 $ 1,169    
Cash and cash equivalents Total 1,268 5,780 [1] 3,437 9,454
Short-term investments 0 [2] 581 [1],[2]    
Remaining maturities from 1 to 90 days [Member]
       
Financial Instruments        
Time Deposits, at Carrying Value 632 4,318    
Commercial Paper, at Carrying Value 0 293    
Time Deposits [Member] | Remaining maturities from 1 to 90 days [Member]
       
Financial Instruments        
Short-term investments 0 349    
Commercial Paper [Member] | Remaining maturities from 1 to 90 days [Member]
       
Financial Instruments        
Short-term investments $ 0 $ 232    
[1] **Certain amounts have been restated to reflect a prior period adjustment. See Note 16—Accumulated Other Comprehensive Income, in the Notes to Consolidated Financial Statements.
[2] *Includes marketable securities of $0 as of September 30, 2012, and $232 as of December 31, 2011.