Inventories (Tables)

9 Months Ended

Sep. 30, 2017

Inventory Disclosure [Abstract]

Schedule of inventories

Inventories are comprised of the following (in millions).

	September 30, 2017		December 31, 2016
Raw materials	$	2,990	$	2,789
Work in process and other		2,805		2,506
Finished manufactured goods		4,338		4,033
Goods acquired for resale		6,798		6,399
	$	16,931	$	15,727