Inventories (Tables)

3 Months Ended

Mar. 31, 2022

Inventory Disclosure [Abstract]

Components of Inventories

Inventories are stated at the lower of cost (“FIFO”) and net realizable value. The components of inventories were as follows (dollars in millions):

	As of
	March 31, 2022			December 31, 2021
Raw materials	$	432		$	395
Work in progress		324			283
Finished products		249			190
Inventories		1,006			868
Inventory valuation reserve		(93	)		(91	)
Total inventories, net of reserve	$	913		$	777