v2.4.0.6
Financial Instruments and Fair Value Measurements (Details 3) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Derivative      
Maximum period of commodity contracts for sale of agricultural commodity one future crop cycle    
Options | Exchange traded net (short) and long
     
Derivative      
Delta amount of open foreign exchange positions $ (6)    
Options | Non-exchange traded (short) position
     
Derivative      
Delta amount of open foreign exchange positions (278)    
Options | Non-exchange traded long position
     
Derivative      
Delta amount of open foreign exchange positions 159    
Forwards | Exchange traded net (short) and long
     
Derivative      
Notional amounts of open foreign exchange positions 81    
Forwards | Non-exchange traded (short) position
     
Derivative      
Notional amounts of open foreign exchange positions (4,227)    
Forwards | Non-exchange traded long position
     
Derivative      
Notional amounts of open foreign exchange positions 11,660    
Swaps | Non-exchange traded (short) position
     
Derivative      
Notional amounts of open foreign exchange positions (96)    
Swaps | Non-exchange traded long position
     
Derivative      
Notional amounts of open foreign exchange positions 42    
Interest rate swap
     
Derivative      
Reduction in interest expense 6 9 8
Reclassification of loss from accumulated other comprehensive income (loss) to interest expense   6 2
Commodities
     
Derivative      
Maximum period of commodity contracts for sale of agricultural commodity one future crop cycle    
Commodities | Futures | Exchange traded net (short) and long
     
Derivative      
Nonmonetary notional amount of derivatives (8,589,982)    
Commodities | Options | Exchange traded net (short) and long
     
Derivative      
Nonmonetary notional amount of derivatives (197,149)    
Commodities | Forwards | Non-exchange traded (short) position
     
Derivative      
Nonmonetary notional amount of derivatives (20,448,160)    
Commodities | Forwards | Non-exchange traded long position
     
Derivative      
Nonmonetary notional amount of derivatives 25,790,377    
Commodities | Swaps | Non-exchange traded (short) position
     
Derivative      
Nonmonetary notional amount of derivatives (260,816)    
Freight | Options | Exchange cleared net (short) and long
     
Derivative      
Nonmonetary notional amount of derivatives (80)    
Freight | Forwards | Exchange cleared net (short) and long
     
Derivative      
Nonmonetary notional amount of derivatives (2,329)    
Natural Gas | Futures | Exchange traded net (short) and long
     
Derivative      
Nonmonetary notional amount of derivatives (1,620,000)    
Natural Gas | Options | Exchange traded net (short) and long
     
Derivative      
Nonmonetary notional amount of derivatives 2,825,515    
Natural Gas | Swaps | Non-exchange cleared long position
     
Derivative      
Nonmonetary notional amount of derivatives 960,758    
Energy - other | Futures | Exchange traded net (short) and long
     
Derivative      
Nonmonetary notional amount of derivatives 41,320    
Energy - other | Options | Exchange traded net (short) and long
     
Derivative      
Nonmonetary notional amount of derivatives 537,794    
Energy - other | Options | Non-exchange cleared (short) position
     
Derivative      
Nonmonetary notional amount of derivatives (150,187)    
Energy - other | Options | Non-exchange cleared long position
     
Derivative      
Nonmonetary notional amount of derivatives 123,594    
Energy - other | Forwards | Non-exchange cleared (short) position
     
Derivative      
Nonmonetary notional amount of derivatives (864,372)    
Energy - other | Forwards | Non-exchange cleared long position
     
Derivative      
Nonmonetary notional amount of derivatives 8,786,147    
Energy - other | Swaps | Non-exchange cleared (short) position
     
Derivative      
Nonmonetary notional amount of derivatives (45,461)    
Energy - other | Swaps | Non-exchange cleared long position
     
Derivative      
Nonmonetary notional amount of derivatives 15,622    
Discontinued hedge relationship | Interest rate swap
     
Derivative      
Reduction of interest expense due to amortization of deferred gains on termination of interest rate swap agreements $ 13 $ 11 $ 11