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Inventories (Tables) | 12 Months Ended
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Dec. 31, 2022
Inventory Disclosure [Abstract] |
Schedule of Inventory | Inventories at December 31, 2022 and 2021 were as follows (in millions):
|  | 2022 |  | 2021
Raw materials and supplies |  | $ | 213.6 |  |  | $ | 160.3 |
Work-in-process |  | 941.1 |  |  | 829.6 |
Finished goods |  | 111.9 |  |  | 121.8 |
|  | 1,266.6 |  |  | 1,111.7 |
Inventory valuation reserves |  | (70.9) |  |  | (65.4) |
Total inventories, net |  | $ | 1,195.7 |  |  | $ | 1,046.3 |
Inventories are stated at the lower of cost (FIFO and average cost methods) or net realizable value.

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