Inventories (Tables)

12 Months Ended

Dec. 31, 2017

Inventory, Net [Abstract]

Inventories, net of reserves

Inventories, net of reserves of $360 million and $260 million in 2017 and 2016, respectively, are comprised of the following at December 31:

	2017		2016
Finished goods	$	2,577	$	1,585
Work in process and raw materials	1,930		1,581
Total inventories, net	$	4,507	$	3,166