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Long-term Financing and Sales of Receivables (Tables) | 12 Months Ended
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Dec. 31, 2023
Receivables [Abstract] |
Long-Term Financing | Long-term receivables consist of receivables with payment terms greater than twelve months, long-term loans and lease receivables under sales-type leases. Long-term receivables consist of the following:
December 31 | 2023 |  | 2022
Long-term receivables, gross | $ | 36 |  |  | $ | 40 |
Less allowance for losses | (2) |  |  | (2) |
Long-term receivables | $ | 34 |  |  | $ | 38 |
Less current portion | (13) |  |  | (13) |
Non-current long-term receivables | $ | 21 |  |  | $ | 25 |
Proceeds Received from Non-Recourse Sales of Accounts Receivable And Long-Term Receivables | The following table summarizes the proceeds received from sales of accounts receivable and long-term receivables for the years ended December 31, 2023, 2022 and 2021.
Years ended December 31 | 2023 |  | 2022 |  | 2021
Contract-specific discounting facility | $ | — |  |  | $ | 49 |  |  | $ | 211 |
Accounts receivable sales proceeds | 96 |  |  | 179 |  |  | 56 |
Long-term receivables sales proceeds | 182 |  |  | 204 |  |  | 248 |
Total proceeds from receivable sales | $ | 278 |  |  | $ | 432 |  |  | $ | 515 |
Financing Receivables Aging Analysis | An aging analysis of financing receivables at December 31, 2023 and December 31, 2022 is as follows:
December 31, 2023 | Total Long-term Receivable |  | Current Billed Due |  | Past Due Under 90 Days |  | Past Due Over 90 Days
Municipal leases secured tax exempt | $ | 15 |  |  | $ | 1 |  |  | $ | 1 |  |  | $ | 1 |
Commercial loans and leases secured | 21 |  |  | 1 |  |  | — |  |  | 1 |
Long-term receivables, including current portion | $ | 36 |  |  | $ | 2 |  |  | $ | 1 |  |  | $ | 2 |
December 31, 2022 | Total Long-term Receivable |  | Current Billed Due |  | Past Due Under 90 Days |  | Past Due Over 90 Days
Municipal leases secured tax exempt | $ | 22 |  |  | $ | 1 |  |  | $ | 1 |  |  | $ | 1 |
Commercial loans and leases secured | 18 |  |  | — |  |  | — |  |  | 2 |
Long-term receivables, including current portion | $ | 40 |  |  | $ | 1 |  |  | $ | 1 |  |  | $ | 3 |

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