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INVENTORIES (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Jun. 30, 2022
Inventory Disclosure [Abstract]      
Supplies $ 145.1 $ 137.6 $ 136.8
Raw materials 181.6 201.2 202.0
Work in process 202.5 199.6 192.7
Finished goods 725.8 559.3 580.2
Inventories excluding LIFO reserve 1,255.0 1,097.7 1,111.7
LIFO reserve (173.8) (155.8) (166.0)
Inventories, net $ 1,081.2 $ 941.9 $ 945.7