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Operating Costs and Expenses (Details 5) - BRL (R$) R$ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Operating costs and expenses [Line Items] |  |  |
Construction cost | R$ 2,522,908 | R$ 2,319,720 | R$ 2,137,188
Materials And Supplies [Member] |  |  |
Operating costs and expenses [Line Items] |  |  |
Construction cost | 1,519,486 | 1,409,633 | 1,227,418
Third Party Services [Member] |  |  |
Operating costs and expenses [Line Items] |  |  |
Construction cost | 785,333 | 689,886 | 694,306
Personnel [Member] |  |  |
Operating costs and expenses [Line Items] |  |  |
Construction cost | 170,749 | 184,246 | 171,369
Others [Member] |  |  |
Operating costs and expenses [Line Items] |  |  |
Construction cost | R$ 47,340 | R$ 35,955 | R$ 44,095

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