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Inventories (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2014
Inventory Disclosure [Abstract] |
Schedule of Inventory Components |
|  | March 31, 2014 |  |  | December 31, 2013 |
Finished goods |  | $ | 702 |  |  | $ | 578 |
Work-in-process |  |  | 1,006 |  |  |  | 828 |
Bauxite and alumina |  |  | 597 |  |  |  | 581 |
Purchased raw materials |  |  | 528 |  |  |  | 474 |
Operating supplies |  |  | 234 |  |  |  | 244 |
|  | $ | 3,067 |  |  | $ | 2,705 |

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