Inventory

3 Months Ended

Mar. 31, 2020

Inventory Disclosure [Abstract]

Inventory [Text Block]

Inventory, net

(dollars in millions)	March 31, 2020		December 31, 2019
Raw materials	$	3,576	$	3,357
Work-in-process	2,850		2,726
Finished goods	5,080		4,867
	$	11,506	$	10,950

Raw materials, work-in-process and finished goods are net of valuation reserves of $1,386 million and $1,377 million as of March 31, 2020 and December 31, 2019, respectively.