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INVENTORIES (Schedule of Inventories) (Details) - USD ($)
$ in Millions
Sep. 30, 2018
Dec. 31, 2017
Inventory Disclosure [Abstract]    
Finished goods $ 262 $ 222
Work in process 65 47
Raw materials 46 48
Supplies 80 73
Total 453 390
Adjustment of inventories to a LIFO basis (150) (112)
Total inventories $ 303 $ 278