Allowance for Losses on Financial Assets (Tables)

12 Months Ended

Dec. 31, 2020

Credit Loss [Abstract]

Financial Assets, Allowance for Credit Loss

The change in allowances for expected credit losses for the year ended December 31, 2020 consisted of the following:

	Accounts receivable, net	Unbilled receivables, net	Other Current Assets, net	Customer financing, net	Other Assets, net	Total
Balance at January 1, 2020	($138)	($81)	($38)	($5)	($75)	($337)
Changes in estimates	(314)	(48)	(34)	(12)	(66)	(474)
Write-offs	8					8
Recoveries					1	1
Balance at December 31, 2020	($444)	($129)	($72)	($17)	($140)	($802)