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Allowance for Losses on Financial Assets | 12 Months Ended
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Dec. 31, 2023
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, 2023 and 2022 consisted of the following:
| Accounts receivable | Unbilled receivables | Other Current Assets | Financing receivables | Other Assets | Total
Balance at January 1, 2022 | ($390) |  | ($91) |  | ($62) |  | ($18) |  | ($186) |  | ($747) |
Changes in estimates | 2 |  | 21 |  | (27) |  | (37) |  | (35) |  | (76) |
Write-offs | 260 |  | 47 |  | 4 |  |  | 133 |  | 444 |
Recoveries | 12 |  |  |  |  |  | 12 |
Balance at December 31, 2022 | ($116) |  | ($23) |  | ($85) |  | ($55) |  | ($88) |  | ($367) |
Balance at January 1, 2023 | ($116) |  | ($23) |  | ($85) |  | ($55) |  | ($88) |  | ($367) |
Changes in estimates | (6) |  | 4 |  | 30 |  | 4 |  | (34) |  | (2) |
Write-offs | 29 |  |  | 5 |  |  |  | 34 |
Recoveries | 4 |  |  |  |  |  | 4 |
Balance at December 31, 2023 | ($89) |  | ($19) |  | ($50) |  | ($51) |  | ($122) |  | ($331) |

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