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Inventories | 9 Months Ended
--- | ---
Sep. 30, 2024
Inventory Disclosure [Abstract] |
Inventories | Inventories
| September 30, 2024 |  | December 31, 2023
Finished goods | $ | 475 |  |  | $ | 451 |
Work-in-process | 923 |  |  | 891 |
Purchased raw materials | 433 |  |  | 355 |
Operating supplies | 71 |  |  | 68 |
Total inventories | $ | 1,902 |  |  | $ | 1,765 |
As of September 30, 2024 and December 31, 2023, the portion of inventories valued on a last-in, first-out (“LIFO”) basis was $505 and $446, respectively. If valued on an average-cost basis, total inventories would have been $265 and $236 higher as of September 30, 2024 and December 31, 2023, respectively.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 330 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/330/tableOfContent + Details
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