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Allowances for Losses on Financial Assets | 9 Months Ended
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Sep. 30, 2023
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 nine months ended September 30, 2023 and 2022 consisted of the following:
| Accounts receivable | Unbilled receivables | Other current assets | Customer financing | Other assets | Total
Balance at January 1, 2022 | ($390) |  | ($91) |  | ($62) |  | ($18) |  | ($186) |  | ($747) |
Changes in estimates |  | 19 |  | (16) |  | (38) |  | (31) |  | (66) |
Write-offs | 246 |  | 47 |  | 1 |  |  | 133 |  | 427 |
Recoveries | 5 |  |  |  |  |  | 5 |
Balance at September 30, 2022 | ($139) |  | ($25) |  | ($77) |  | ($56) |  | ($84) |  | ($381) |
Balance at January 1, 2023 | ($116) |  | ($23) |  | ($85) |  | ($55) |  | ($88) |  | ($367) |
Changes in estimates | (8) |  | 3 |  | 15 |  | 4 |  | (16) |  | (2) |
Write-offs | 27 |  |  | 5 |  |  |  | 32 |
Recoveries | 4 |  |  |  |  |  | 4 |
Balance at September 30, 2023 | ($93) |  | ($20) |  | ($65) |  | ($51) |  | ($104) |  | ($333) |

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