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INVENTORIES (Details) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
At FIFO or average cost (approximates current cost) [Abstract]    
Finished goods $ 1,114 $ 997
Work in process 213 198
Raw materials and supplies 470 473
Total inventories at FIFO or average cost 1,797 1,668
LIFO Reserve 288 264
Total inventories $ 1,509 $ 1,404
Inventories valued on the LIFO method (in hundredths) 60.00% 60.00%