Inventories (Tables)

9 Months Ended

Sep. 30, 2020

Inventory Disclosure [Abstract]

Components of Inventories

Inventories are stated at the lower of cost (according to first-in-first-out basis, "FIFO") and net realizable value. The components of inventories were as follows:

	As of
(Dollars in millions)	September 30, 2020		December 31, 2019
Raw materials	$	93	$	99
Work in progress	11		8
Finished products	48		62
Inventories	152		169
Inventory valuation reserve	(28)		(25)
Total inventories, net of reserve	$	124	$	144