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Finance Income and Expenses - Schedule of Finance Income and Expenses (Details) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
FINANCE INCOME |  |  |  |
Income from financial investments |  | R$ 452 | R$ 468 | R$ 242
Interest on sale of energy |  | 286 | 337 | 460
Foreign exchange variations - Itaipu |  | 7 | 17 |
Foreign exchange variations - loans and debentures |  | 277 | 338 |
Monetary variations |  | 163 | 108 | 68
Monetary variations -CVA |  | 76 | 185 | 64
Monetary updating of escrow deposits |  | 82 | 82 | 29
PIS/Pasep and Cofins charged on finance income | [1] | (197) | (117) | (124)
Gains on financial instruments - Swap |  | 319 | 52 |
Prepayments rents |  | 4 | 5 |
Borrowing costs paid by related parties |  |  |  | 2
Monetary updating on PIS/Pasep and Cofins taxes credits over ICMS | [2] |  |  | 20
Others |  | 122 | 77 | 83
Finance income |  | 1,272 | 1,500 | 844
FINANCE EXPENSES |  |  |  |
Charges on loans and debentures (Note 22) |  | (1,013) | (928) | (1,147)
Cost of debt - amortization of transaction cost |  | (14) | (7) | (20)
Foreign exchange variations - loans |  |  |  | (353)
Premium on repurchase of debt securities (Eurobonds) |  |  | (47) | (491)
Foreign exchange variations - Itaipu |  |  |  | (27)
Monetary updating - loans and debentures |  | (148) | (167) | (331)
Charges and monetary updating on post-employment obligations |  | (20) | (40) | (70)
Losses with financial instruments - Swap |  | (177) | (438) | (538)
Monetary updating on PIS/Pasep and Cofins taxes credits over ICMS | [2] | (41) | (1,294) |
Monetary updating - onerous concessions |  |  |  | (8)
Monetary updating - Lease liabilities |  | (35) | (27) | (25)
Financial expenses (R&D and PEE) |  | (38) | (38) |
Others |  | (165) | (80) | (86)
Finance costs |  | 1,651 | 3,066 | 3,096
NET FINANCE INCOME (EXPENSES) |  | R$ (379) | R$ (1,566) | R$ (2,252)
[1] | PIS/Pasep and Cofins expenses are levied on financial income and interest on own capital.
[2] | The interest of the tax credits related to PIS/Pasep and Cofins, arising from the exclusion of ICMS from its calculation basis, and the liability to be refunded to consumers is presented by net value. With the offsetting of the credits, the liability to be refunded to consumers exceeded the value of the credits to be received, generating a net financial expense.

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- Definition The amount of post-employment benefit expense relating to defined contribution plans. Defined contribution plans are post-employment benefit plans under which an entity pays fixed contributions into a separate entity (a fund) and will have no legal or constructive obligation to pay further contributions if the fund does not hold sufficient assets to pay all employee benefits relating to employee service in the current and prior periods. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 53 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_53&doctype=Standard -URIDate 2023-03-23 + Details
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