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INVENTORIES
12 Months Ended
Dec. 31, 2023
Inventory Disclosure [Abstract]  
INVENTORIES
NOTE 8. INVENTORIES
December 31,
20232022
Inventories($ in millions)
Supplies$160.3 $137.6 
Raw materials171.1 201.2 
Work in process153.5 199.6 
Finished goods507.6 559.3 
Inventories excluding LIFO reserve992.5 1,097.7 
LIFO reserve(133.7)(155.8)
Inventories, net$858.8 $941.9 
Inventories valued using the LIFO method comprised 56% and 59% of the total inventories at December 31, 2023 and 2022, respectively. The replacement cost of our inventories would have been approximately $133.7 million and $155.8 million higher than that reported at December 31, 2023 and 2022, respectively.