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Allowances for Losses on Financial Assets
 3 Months Ended
Mar. 31, 2026
Allowance for Losses on Financial Assets [Abstract]  
Allowances for Losses on Financial Assets Allowances for Losses on Financial Assets
The changes in allowances for expected credit losses for the three months ended March 31, 2026 and 2025, consisted of the following:
Accounts receivable Unbilled receivablesOther current assets
Financing receivables
Other assetsTotal
Balance at January 1, 2025($92)($38)($47)($7)($199)($383)
Changes in estimates1 (3)1 3 (38)(36)
Write-offs3 3 
Recoveries1 1 
Balance at March 31, 2025
($87)($41)($46)($4)($237)($415)
Balance at January 1, 2026($76)($42)($43)$0 ($111)($272)
Changes in estimates4 1 (2) (4)(1)
Write-offs1    6 7 
Recoveries    1 1 
Balance at March 31, 2026
($71)($41)($45)$0 ($108)($265)