Inventories

9 Months Ended

Sep. 30, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories consisted of the following (in millions):

	September 30, 2018		December 31, 2017
Raw materials	$	288	$	232
Work in process	1,771		1,668
Finished goods	958		934
Total inventories	$	3,017	$	2,834