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Liabilities for assets acquisitions and subsidiaries (Details) - BRL (R$) R$ in Thousands | 1 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2018 | Sep. 30, 2025 | Dec. 31, 2024
Disclosure of detailed information about business combination [line items] |  |  |
Liabilities for assets acquisitions and subsidiaries |  | R$ 18,588 | R$ 21,166
Liabilities for assets acquisitions and subsidiaries |  | 78,213 | 99,324
Facepa (1) |  |  |
Disclosure of detailed information about business combination [line items] |  |  |
Liabilities for Assets Acquisitions through Business Combination |  | 28,131 | 27,182
Asset Acquisition Consideration Transferred | R$ 307,876 |  |
Payments to Acquire Productive Assets | R$ 267,876 |  |
Vale Florestar Fundo de Investimento em Participações ("VFFIP") (2) |  |  |
Disclosure of detailed information about business combination [line items] |  |  |
Liabilities for Assets Acquisitions through Business Combination |  | 68,670 | 93,308
Business combinations |  |  |
Disclosure of detailed information about business combination [line items] |  |  |
Liabilities for Assets Acquisitions through Business Combination |  | R$ 96,801 | R$ 120,490

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