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Inventories, net | 12 Months Ended
--- | ---
Dec. 31, 2021
Inventories, net |
Inventories, net | (7) Inventories, net ​ Inventories consist of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
​ |  | 2021 |  | 2020
​ | ​ | (in millions)
Raw materials | ​ | $ | 119.4 | ​ | $ | 79.6
Work-in-process | ​ |  | 20.4 | ​ |  | 16.1
Finished goods | ​ |  | 230.9 | ​ |  | 167.9
​ | ​ | $ | 370.7 | ​ | $ | 263.6
​ Raw materials, work-in-process and finished goods are net of valuation reserves of $36.7 million and $37.3 million as of December 31, 2021 and 2020, respectively. Finished goods of $10.6 million and $16.3 million as of December 31, 2021 and 2020, respectively, were consigned.

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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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