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Provision for judicial liabilities - Contingencies with possible losses (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Fibria |  |
Disclosure of other provisions [line items] |  |
Fair Value Adjustment Of Probable Contingencies | R$ 2,108,635 | R$ 2,135,869
Total |  |
Disclosure of other provisions [line items] |  |
Possible Losses for Which No Provision Was Recorded | 15,074,276 | 14,432,915
Taxes and social security (1) |  |
Disclosure of other provisions [line items] |  |
Possible Losses for Which No Provision Was Recorded | 9,837,082 | 9,775,068
Labor |  |
Disclosure of other provisions [line items] |  |
Possible Losses for Which No Provision Was Recorded | 171,480 | 194,883
Civil and environmental (1) |  |
Disclosure of other provisions [line items] |  |
Possible Losses for Which No Provision Was Recorded | R$ 5,065,714 | R$ 4,462,964

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