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Trade receivables (Details 1) - BRL (R$)
R$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]    
Current R$ 2,244,754 R$ 1,896,535
Past-due 2,461,571 2,301,864
Total 4,706,325 4,198,399
Not later than one month [member]    
IfrsStatementLineItems [Line Items]    
Past-due 489,709 502,164
Later than one month and not later than two months [member]    
IfrsStatementLineItems [Line Items]    
Past-due 248,128 267,723
Later Than Two Month And Not Later Than Three Months [Member]    
IfrsStatementLineItems [Line Items]    
Past-due 165,306 182,977
Later Than Three Month And Not Later Than Four Months [Member]    
IfrsStatementLineItems [Line Items]    
Past-due 150,941 155,018
Later Than Four Month And Not Later Than Six Months [Member]    
IfrsStatementLineItems [Line Items]    
Past-due 281,530 258,718
Later than six months and not later than one year [member]    
IfrsStatementLineItems [Line Items]    
Past-due 58,702 95,751
Later than one year [member]    
IfrsStatementLineItems [Line Items]    
Past-due R$ 1,067,255 R$ 839,513