Allowance for Losses on Financial Assets Allowance for Losses on Financial Assets

6 Months Ended

Jun. 30, 2021

Allowance for Losses on Financial Assets [Abstract]

Credit Loss, Financial Instrument

Allowances for Losses on Financial Assets

The changes in allowances for expected credit losses for the six months ended June 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	(246)	(107)	(10)	(9)	(34)	(406)
Write-offs	3					3
Balance at June 30, 2020	($381)	($188)	($48)	($14)	($109)	($740)
Balance at January 1, 2021	($444)	($129)	($72)	($17)	($140)	($802)
Changes in estimates	16		(3)	1	(36)	(22)
Write-offs	15		1			16
Balance at June 30, 2021	($413)	($129)	($74)	($16)	($176)	($808)