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Financial Instruments (Details 1) - Credit risk [member] - BRL (R$) R$ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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IfrsStatementLineItems [Line Items] |  |
Exposure to credit risk | R$ 12,878,485 | R$ 9,246,849
Cash And Cash Equivalents Financial Asset [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Exposure to credit risk | 5,634,623 | 2,678,457
Bonds And Securities One [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Exposure to credit risk | 495,495 | 431,056
Pledges And Restricted Deposits Linked [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Exposure to credit risk | 9 | 157
Trade Accounts Receivable Financial Assets [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Exposure to credit risk | 3,866,429 | 3,451,869
Sectorial Financial Assets [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Exposure to credit risk | 30,946 | 381,398
Accounts Receivable Related To The Concession [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Exposure to credit risk | 1,954,679 | 1,442,819
Accounts Receivable Related To The Concession Bonus From The Grant [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Exposure to credit risk | 792,741 | 766,832
Accounts Receivable Related To The Concession Compensation [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Exposure to credit risk | 71,835 | 68,642
Accounts Receivable Generation Concessions [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Exposure to credit risk | R$ 31,728 | R$ 25,619

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- References No definition available. + Details
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- Definition The amount that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 35K -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_35K_a&doctype=Standard -URIDate 2023-03-23 + Details
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