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INVENTORIES (Details) - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Sep. 30, 2022
Inventory Disclosure [Abstract]      
Supplies $ 150.3 $ 137.6 $ 137.2
Raw materials 178.3 201.2 203.4
Work in process 188.4 199.6 189.6
Finished goods 615.5 559.3 569.2
Inventories excluding LIFO reserve 1,132.5 1,097.7 1,099.4
LIFO reserve (154.8) (155.8) (154.3)
Inventories, net $ 977.7 $ 941.9 $ 945.1