INVENTORIES (Tables)

9 Months Ended

Sep. 30, 2018

Inventory Disclosure [Abstract]

Schedule of Inventories, Net

Inventories consisted of the following (in millions):

	September 30, 2018		December 31, 2017
Materials, spares and supplies	$	470	$	563
Work-in-process	2,089		1,823
Finished goods	491		492
Total inventories	$	3,050	$	2,878