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INVENTORIES (Schedule of Inventories) (Details) - USD ($)
$ in Millions
Sep. 30, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Finished goods $ 159 $ 162
Work in process 28 31
Raw materials 34 47
Supplies 90 92
Inventory, Gross 311 332
Inventory Adjustments (80) (85)
Total inventories $ 231 $ 247