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Operating Costs and Expenses - Schedule of Other Operating Expenses (Revenues), Net (Parenthetical) (Details) - BRL (R$) R$ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Wrote off of financial asset | R$ 172 |  | R$ 172 |
Sale of investments |  | 319 | R$ 52 |
Baguari Energia [Member] |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Sale of investments |  | 261 |  |
Retiro Baixo [Member] |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Sale of investments |  | 27 |  |
M E S A [Member] |  |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |  |
Sale of investments |  | R$ 31 |  |

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