CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $) In Millions | 3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | Sep. 30, 2010 | |
| CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME | ||||
| Foreign exchange translation adjustment, tax expense | $ 0 | $ 0 | $ 0 | $ 0 |
| Unrealized gains (losses) on commodity futures and foreign exchange contracts designated as cash flow hedges, tax benefit (expense) | 8 | (11) | 1 | (11) |
| Unrealized gains on investments, tax expense | 3 | 0 | 3 | 0 |
| Reclassification of realized net losses (gains) to net income, tax expense | $ 0 | $ (7) | $ 7 | $ (7) |