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INVENTORY (Details) - USD ($)
$ in Millions
Sep. 30, 2017
Dec. 31, 2016
Inventory Disclosure [Abstract]    
Raw materials $ 959 $ 880
Work-in-process 434 396
Finished goods 1,167 1,074
Inventory at FIFO 2,560 2,350
Excess of FIFO over LIFO cost (103) (96)
Total inventory $ 2,457 $ 2,254