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Deferred taxes and contributions (Details 1) - BRL (R$)
R$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
IfrsStatementLineItems [Line Items]        
Deferred income tax assets R$ 1,119,259 R$ 1,012,595 R$ 931,736 R$ 905,258
Deferred income tax liabilities (1,308,537) (1,296,334) (1,252,452) (1,339,254)
Deferred tax assets (liabilities), net (189,278) (283,739) R$ (320,716) R$ (433,996)
Realized Within 12 Months [Member]        
IfrsStatementLineItems [Line Items]        
Deferred income tax assets 318,965 280,373    
Deferred income tax liabilities (25,746) (31,777)    
Realized After 1 Year [Member]        
IfrsStatementLineItems [Line Items]        
Deferred income tax assets 800,294 732,222    
Deferred income tax liabilities R$ (1,282,791) R$ (1,264,557)