Inventories (Tables)

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Components of Inventories

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

	As of
	March 31,  2019			December 31, 2018
Raw materials	$	118		$	108
Work in progress	11			15
Finished products	64			71
Inventories	$	193		$	194
Inventory valuation reserve	(23		)	(23		)
Total inventories, net of reserve	$	170		$	172