Allowance for Losses on Financial Assets Allowance for Losses on Financial Assets (Tables)

9 Months Ended

Sep. 30, 2021

Allowance for Losses on Financial Assets [Abstract]

Financial Assets, Allowance for Credit Loss

The changes in allowances for expected credit losses for the nine months ended September 30, 2021 and 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	(296)	(46)	(20)	(12)	(3)	(377)
Write-offs	3					3
Balance at September 30, 2020	($431)	($127)	($58)	($17)	($78)	($711)
Balance at January 1, 2021	($444)	($129)	($72)	($17)	($140)	($802)
Changes in estimates	15	3	(3)	3	(45)	(27)
Write-offs	21		1		13	35
Recoveries	1					1
Balance at September 30, 2021	($407)	($126)	($74)	($14)	($172)	($793)