Inventory

6 Months Ended

Jun. 30, 2019

Inventory Disclosure [Abstract]

Inventory [Text Block]

Inventory, net

(dollars in millions)	June 30, 2019		December 31, 2018
Raw materials	$	3,024	$	3,052
Work-in-process	2,863		2,673
Finished goods	5,047		4,358
	$	10,934	$	10,083

Raw materials, work-in-process and finished goods are net of valuation reserves of $1,405 million and $1,270 million as of June 30, 2019 and December 31, 2018, respectively.