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Allowance for Losses on Financial Assets
12 Months Ended
Dec. 31, 2022
Credit Loss [Abstract]  
Allowances for Losses on Financial Assets Allowances for Losses on Financial Assets
The change in allowances for expected credit losses for the years ended December 31, 2022 and 2021 consisted of the following:
Accounts receivableUnbilled receivablesOther Current AssetsCustomer financingOther AssetsTotal
Balance at January 1, 2021($444)($129)($72)($17)($140)($802)
Changes in estimates(24)(11)(1)(59)(89)
Write-offs77 49 13 143 
Recoveries
Balance at December 31, 2021(390)(91)(62)(18)(186)(747)
Balance at January 1, 2022(390)(91)(62)(18)(186)(747)
Changes in estimates2 21 (27)(37)(35)(76)
Write-offs260 47 4 133 444 
Recoveries12 12 
Balance at December 31, 2022($116)($23)($85)($55)($88)($367)