Inventories (Tables)

3 Months Ended

Mar. 31, 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)	March 31, 2020		December 31, 2019
Raw materials	$	99	$	99
Work in progress	9		8
Finished products	54		62
Inventories	162		169
Inventory valuation reserve	(27)		(25)
Total inventories, net of reserve	$	135	$	144