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Financial instruments and risk management (Details 3) - Currency risk [member] - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
IfrsStatementLineItems [Line Items]    
Exposure in result, net R$ (148,678) R$ (263,437)
Exposure of assets and liabilities in foreign currencies (2,182,024) (3,985,367)
Derivative financial instruments (hedge) 2,033,346 3,721,930
Cash And Cash Equivalent [Member]    
IfrsStatementLineItems [Line Items]    
Exposure in result, net 2,970,268 3,691,668
Trade receivables [member]    
IfrsStatementLineItems [Line Items]    
Exposure in result, net 4,788,635 6,013,713
Trade Accounts Payable [Member]    
IfrsStatementLineItems [Line Items]    
Exposure in result, net (1,195,133) (1,484,810)
Loans and Borrowings [Member]    
IfrsStatementLineItems [Line Items]    
Exposure in result, net (8,715,484) (12,241,309)
Other Assets And Liabilities Net [Member]    
IfrsStatementLineItems [Line Items]    
Exposure in result, net R$ (30,310) R$ 35,371