Inventories (Tables)

3 Months Ended

Mar. 31, 2020

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories consisted of the following as of the dates presented below:

	As of
	March 31, 2020		December 31, 2019
Parts and work-in-process	$	149	$	153
Finished goods	99		91
Total inventories	$	248	$	244