Inventories and Contracts in Progress (Tables)

12 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Inventory Table [Table Text Block]

(dollars in millions)	2018		2017
Raw materials	$	3,052	$	2,038
Work-in-process	2,673		3,366
Finished goods	4,358		3,845
Contracts in progress	—		10,205
	10,083		19,454
Less:
Progress payments, secured by lien, on U.S. Government contracts	—		(236		)
Billings on contracts in progress	—		(9,337		)
	$	10,083	$	9,881