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Financial Instruments and Risk Management - Schedule Of Fair Value Of Derivative Hedge Instrument One (Details) - BRL (R$) R$ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of financial liabilities [line items] |  |
Net liabilities exposed | R$ (2,097) | R$ (4,249)
Base scenario [member] |  |
Disclosure of financial liabilities [line items] |  |
Net liabilities exposed | (2,097) |
Net liabilities exposed | (2,097) |
Probable Scenario [Member] |  |
Disclosure of financial liabilities [line items] |  |
Net liabilities exposed | (2,157) |
Net liabilities exposed | (2,157) |
Net effect of exchange rate fluctuation | (60) |
Adverse Scenario [Member] |  |
Disclosure of financial liabilities [line items] |  |
Net liabilities exposed | (2,598) |
Net liabilities exposed | (2,598) |
Net effect of exchange rate fluctuation | (501) |
Loans and financings [member] | Base scenario [member] |  |
Disclosure of financial liabilities [line items] |  |
Net liabilities exposed | (1,857) |
Loans and financings [member] | Probable Scenario [Member] |  |
Disclosure of financial liabilities [line items] |  |
Net liabilities exposed | (1,910) |
Loans and financings [member] | Adverse Scenario [Member] |  |
Disclosure of financial liabilities [line items] |  |
Net liabilities exposed | (2,301) |
Suppliers (itaipu binacional) [member] | Base scenario [member] |  |
Disclosure of financial liabilities [line items] |  |
Net liabilities exposed | (240) |
Suppliers (itaipu binacional) [member] | Probable Scenario [Member] |  |
Disclosure of financial liabilities [line items] |  |
Net liabilities exposed | (247) |
Suppliers (itaipu binacional) [member] | Adverse Scenario [Member] |  |
Disclosure of financial liabilities [line items] |  |
Net liabilities exposed | R$ (297) |

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