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Concession Financial and Sector Assets and Liabilities - Schedule of Changes in Balances of Sector Financial Assets and Liabilities (Details) - BRL (R$) R$ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Concession Financial and Sector Assets and Liabilities |  |  |  |
Beginning balance |  | R$ 944 | R$ 2,097 | R$ (98)
Additions |  | 416 | (386) | 1,908
Amortization |  | (629) | (761) | 238
Transfer of other liabilities | [1] |  |  | (15)
Proceeds from loan - Water scarcity account |  | (343) | (191) |
Updating - Selic rate (Note 29) |  | 76 | 185 | 64
Ending balance |  | R$ 464 | R$ 944 | R$ 2,097
[1] | Amounts relating to the reversal of the credits that could not be returned to customers in final billing, due to moderation of tariffs, as specified in §6 of Article 88 of REN 414/2010, included by REN 714/2016.

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- Definition Additions financial assets (liabilities). + References No definition available. + Details
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- Definition Amortization + References No definition available. + Details
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- Definition Concession Financial And Sector Assets And Liabilities Abstract + References No definition available. + Details
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- Definition Financial Asset Liabilities Net + References No definition available. + Details
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- Definition Proceeds From Loan Water Scarcity Account + References No definition available. + Details
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