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INVENTORIES (Details) - USD ($)
$ in Millions
Sep. 30, 2020
Jun. 30, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]            
Finished goods $ 265.4   $ 308.7      
Work in process 50.8   54.4      
Raw materials and supplies 318.5   323.5      
LIFO reserve (49.4) $ (47.4) (49.9) $ (64.2) $ (71.8) $ (82.2)
Total inventories, net $ 585.3   $ 636.7      
Percentage of LIFO inventory 40.00%