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

3 Months Ended

Mar. 31, 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 three months ended March 31, 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	(29)	1	(10)			(38)
Write-offs	1					1
Balance at March 31, 2020	($166)	($80)	($48)	($5)	($75)	($374)
Balance at January 1, 2021	($444)	($129)	($72)	($17)	($140)	($802)
Changes in estimates	10	(1)	(6)		(42)	(39)
Write-offs	1					1
Balance at March 31, 2021	($433)	($130)	($78)	($17)	($182)	($840)