Inventory

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Inventory

7. Inventories

Inventories are stated at the lower of cost (principally FIFO) and net realizable value. The components of inventories were as follows:

	As of
	June 30,  2018			December 31, 2017
Raw materials	$	112		$	90
Work in progress		16			21
Finished products		52			70
Inventories	$	180		$	181
Inventory valuation reserve		(23	)		(27	)
Total inventories, net of reserve	$	157		$	154