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Inventories (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2012
Inventories [Abstract] |
Schedule Of Inventory Components |
|  | March 31, 2012 |  |  | December 31, 2011 |
Finished goods |  | $ | 586 |  |  | $ | 537 |
Work-in-process |  |  | 1,001 |  |  |  | 911 |
Bauxite and alumina |  |  | 688 |  |  |  | 656 |
Purchased raw materials |  |  | 554 |  |  |  | 532 |
Operating supplies |  |  | 268 |  |  |  | 263 |
|  | $ | 3,097 |  |  | $ | 2,899 |

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