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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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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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Amount of consideration transferred in asset acquisition. Includes, but is not limited to, cash, liability incurred by acquirer, and equity interest issued by acquirer.

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The amount recognised as of the reporting date for current liabilities for acquisition of assets.

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- Definition

The amount of liability for acquisition of subsidiaries through business combinations.

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Total of the carrying values as of the balance sheet date of non-current obligations incurred through that date and payable for acquisition of assets.

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The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

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