Inventories (Tables)

6 Months Ended

Jun. 30, 2019

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories consisted of the following:

	As of
	June 30, 2020		December 31, 2019
Parts and work-in-process	$	140	$	153
Finished goods	93		91
Total inventories	$	233	$	244