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Schedule of accrued amounts and judicial deposits (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
IfrsStatementLineItems [Line Items]    
Accrued liabilities R$ 574,352 R$ 635,388
Judicial deposits   325,117
Judicial deposits 339,805  
Accrued liabilities current 66,047 81,073
Accrued liabilities non current 508,305 554,315
Judicial deposits non current 339,805 325,117
Tax [Member]    
IfrsStatementLineItems [Line Items]    
Accrued liabilities 111,572 134,645
Judicial deposits 78,260 67,819
Social Security [Member]    
IfrsStatementLineItems [Line Items]    
Accrued liabilities 1,270 8,170
Labor [Member]    
IfrsStatementLineItems [Line Items]    
Accrued liabilities 304,744 328,334
Judicial deposits 218,200 212,737
Civil [Member]    
IfrsStatementLineItems [Line Items]    
Accrued liabilities 139,824 151,776
Judicial deposits 17,869 17,683
Environmental [Member]    
IfrsStatementLineItems [Line Items]    
Accrued liabilities 16,942 12,463
Judicial deposits 2,739 2,444
Deposit Of A Guarantee [Member]    
IfrsStatementLineItems [Line Items]    
Judicial deposits R$ 22,737 R$ 24,434