Inventory

9 Months Ended

Sep. 30, 2020

Inventory Disclosure [Abstract]

Inventory [Text Block]

Inventory, net

(dollars in millions)	September 30, 2020		December 31, 2019
Raw materials	$	3,163	$	2,984
Work-in-process	2,915		2,586
Finished goods	3,765		3,477
	$	9,843	$	9,047

Raw materials, work-in-process and finished goods are net of valuation reserves of $1,468 million and $1,122 million as of September 30, 2020 and December 31, 2019, respectively.