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Inventories, Net (Tables)
9 Months Ended
Sep. 30, 2022
Inventory Disclosure [Abstract]  
Schedule of Inventories, Net

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December 31, 

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September 30, 

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2021

    

2022

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(In millions)

Raw materials

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$

76.3

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$

125.0

Work in process

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30.4

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25.8

Finished products

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245.6

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286.4

Supplies

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80.0

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74.5

Total

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$

432.3

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$

511.7