Inventories (Tables)

12 Months Ended

Dec. 31, 2018

Inventory, Net [Abstract]

Inventories, net of reserves

Inventories, net of reserves of $430 million and $360 million in 2018 and 2017, respectively, are comprised of the following at December 31:

	2018		2017
Finished goods	$	2,575	$	2,577
Work in process and raw materials	2,045		1,930
Total inventories, net	$	4,620	$	4,507