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Inventories, Net (Tables)
9 Months Ended
Sep. 30, 2024
Inventory Disclosure [Abstract]  
Schedule of Inventories by Major Class
The following table summarizes inventories by major class (in millions):    
September 30, 2024December 31, 2023
Raw materials$129.9 $129.9 
Work in process59.4 50.4 
Finished goods149.7 160.0 
Supplies and other15.3 12.6 
Total inventories$354.3 $352.9