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Concession Contract Assets - Schedule of Detailed Information About Concession Contract Assets (Details) - BRL (R$) R$ in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | ---
IfrsStatementLineItems [Line Items] |  |  |  |
Contract assets | R$ 11,467 | R$ 8,526 | R$ 6,704 | R$ 6,380
Current | 1,140 | 850 |  |
Non current | 10,327 | 7,676 |  |
Distribution - infrastructure assets under construction [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Contract assets | 4,421 | 3,431 |  |
Gas - infrastructure assets under construction [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Contract assets | 554 | 338 |  |
Transmission - National Grid ('BNES' - Basic Network of the Existing System) - Law 12,783/13 [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Contract assets | 1,616 | 1,723 |  |
Transmission - assets remunerated by tariff [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Contract assets | R$ 4,876 | R$ 3,034 |  |

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- Definition The amount of an entity’s right to consideration in exchange for goods or services that the entity has transferred to a customer, when that right is conditioned on something other than the passage of time (for example, the entity’s future performance). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 105 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_105&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 116 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_116_a&doctype=Standard -URIDate 2024-03-27 + Details
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