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Inventories | 3 Months Ended
--- | ---
Mar. 31, 2022
Inventory Disclosure [Abstract] |
Inventories | Inventories: The following table provides a breakdown of inventories at March 31, 2022 and December 31, 2021 (in thousands):
| March 31, |  | December 31,
| 2022 |  | 2021
Finished goods | $ | 656,475 |  |  | $ | 473,836 |
Raw materials and work in process(a) | 276,150 |  |  | 259,221 |
Stores, supplies and other | 81,168 |  |  | 79,863 |
Total | $ | 1,013,793 |  |  | $ | 812,920 |
(a)Included $156.1 million and $149.4 million at March 31, 2022 and December 31, 2021, respectively, of work in process in our Lithium segment.

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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