v2.4.0.6
FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Details 2) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Reconciliation of Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Level 3)        
Balance at beginning of period $ 2,007 $ 856 $ 281 $ 571
Purchases (293) 288 987 1,845
Sales (248) (750) (1,123) (2,112)
Issuances (1) (30) (4) (89)
Settlements (93) 17 (177) (40)
Transfers into Level 3 201 125 1,223 413
Transfers out of Level 3 (86) (100) (176) (156)
Balance at end of period 1,404 431 1,404 431
Changes in unrealized gains and (losses) relating to assets and liabilities included in Cost of goods sold (469) 15 1,014 214
Changes in unrealized gains and (losses) relating to assets and liabilities included in Foreign exchange gains (losses)   2   3
Cost of goods sold
        
Reconciliation of Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Level 3)        
Total gains and losses (realized/unrealized) included in income (83) 23 393 (3)
Foreign exchange gains (losses)
        
Reconciliation of Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Level 3)        
Total gains and losses (realized/unrealized) included in income   2   2
Derivatives, net
        
Reconciliation of Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Level 3)        
Balance at beginning of period 187 134 (2) 307
Purchases   24 3 95
Sales 2 (1) 3 (1)
Issuances (1) (30) (4) (89)
Settlements (93) 17 (177) (40)
Transfers into Level 3 4 1 46 15
Transfers out of Level 3 85 (27) 69 (51)
Balance at end of period 277 78 277 78
Changes in unrealized gains and (losses) relating to assets and liabilities included in Cost of goods sold 159 (15) 280 (30)
Changes in unrealized gains and (losses) relating to assets and liabilities included in Foreign exchange gains (losses)   2   3
Derivatives, net | Cost of goods sold
        
Reconciliation of Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Level 3)        
Total gains and losses (realized/unrealized) included in income 93 (42) 339 (160)
Derivatives, net | Foreign exchange gains (losses)
        
Reconciliation of Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Level 3)        
Total gains and losses (realized/unrealized) included in income   2   2
Readily marketable inventories
        
Reconciliation of Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Level 3)        
Balance at beginning of period 1,820 722 283 264
Purchases (293) 264 984 1,750
Sales (250) (749) (1,126) (2,111)
Transfers into Level 3 197 124 1,177 398
Transfers out of Level 3 (171) (73) (245) (105)
Balance at end of period 1,127 353 1,127 353
Changes in unrealized gains and (losses) relating to assets and liabilities included in Cost of goods sold (628) 30 734 244
Readily marketable inventories | Cost of goods sold
        
Reconciliation of Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Level 3)        
Total gains and losses (realized/unrealized) included in income $ (176) $ 65 $ 54 $ 157