Inventories (Tables)

3 Months Ended

Mar. 31, 2017

Inventory Disclosure [Abstract]

Schedule of inventories

Inventories are comprised of the following (in millions).

	March 31, 2017		December 31, 2016
Raw materials	$	2,857		$    2,789
Work in process and other		2,676		2,506
Finished manufactured goods		4,195		4,033
Goods acquired for resale		6,387		6,399
	$	16,115		$  15,727