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

December 31, 

September 30, 

    

2021

    

2022

(In millions)

Raw materials

$

76.3

$

125.0

Work in process

 

30.4

 

25.8

Finished products

 

245.6

 

286.4

Supplies

 

80.0

 

74.5

Total

$

432.3

$

511.7