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Allowance for Losses on Financial Assets
12 Months Ended
Dec. 31, 2024
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, 2024 and 2023 consisted of the following:
Accounts receivableUnbilled receivablesOther Current AssetsFinancing receivablesOther AssetsTotal
Balance at January 1, 2023($116)($23)($85)($55)($88)($367)
Changes in estimates(6)30 (34)(2)
Write-offs29 34 
Recoveries
Balance at December 31, 2023($89)($19)($50)($51)($122)($331)
Balance at January 1, 2024($89)($19)($50)($51)($122)($331)
Changes in estimates(45)(19)(8)44 (85)(113)
Write-offs41 11 8 60 
Recoveries1 1 
Balance at December 31, 2024($92)($38)($47)($7)($199)($383)