Allowance for Losses on Financial Assets

12 Months Ended

Dec. 31, 2021

Credit Loss [Abstract]

Credit Loss, Financial Instrument

Allowances for Losses on Financial Assets

The change in allowances for expected credit losses for the years ended December 31, 2021 and 2020 consisted of the following:

	Accounts receivable	Unbilled receivables	Other Current Assets	Customer financing	Other Assets	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)
Balance at January 1, 2021	(444)	(129)	(72)	(17)	(140)	(802)
Changes in estimates	(24)	(11)	6	(1)	(59)	(89)
Write-offs	77	49	4		13	143
Recoveries	1					1
Balance at December 31, 2021	($390)	($91)	($62)	($18)	($186)	($747)