Inventories

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Inventories

(7) Inventories

Inventories are comprised of the following (in millions).

	December 31,
	2017		2016
Raw materials	$	2,997	$	2,789
Work in process and other		2,315		2,506
Finished manufactured goods		4,179		4,033
Goods acquired for resale		6,696		6,399
	$	16,187	$	15,727