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Trade accounts receivables - Breakdown of trade accounts receivable by maturity (Details) - Trade accounts receivable - BRL (R$) R$ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Trade Accounts Receivables [Line Items]
Current financial assets	R$ 6,129,481	R$ 9,132,860
Current | Current
Trade Accounts Receivables [Line Items]
Current financial assets	5,376,849	8,216,570
Overdue | Up to 30 days
Trade Accounts Receivables [Line Items]
Current financial assets	434,549	682,142
Overdue | From 31 to 60 days
Trade Accounts Receivables [Line Items]
Current financial assets	89,738	134,674
Overdue | From 61 to 90 days
Trade Accounts Receivables [Line Items]
Current financial assets	61,194	38,187
Overdue | From 91 to 120 days
Trade Accounts Receivables [Line Items]
Current financial assets	45,916	17,701
Overdue | From 121 to 180 days
Trade Accounts Receivables [Line Items]
Current financial assets	25,966	12,402
Overdue | From 181 days
Trade Accounts Receivables [Line Items]
Current financial assets	R$ 95,269	R$ 31,184

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- Definition

The amount of current financial assets. [Refer: Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2025-01-01
-Paragraph 25
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_25&doctype=Standard
-URIDate 2025-03-27

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- Definition

Trade Accounts Receivables [Line Items]

+ References

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