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Provision for contingencies - Schedule of Provision for Estimated Possible Losses (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Nature And Amount Of Loss Contingencies [line items]    
Estimated possible losses recognized R$ 223,531 R$ 61,193
Civil    
Disclosure Of Nature And Amount Of Loss Contingencies [line items]    
Estimated possible losses recognized 130,908 46,169
Labor    
Disclosure Of Nature And Amount Of Loss Contingencies [line items]    
Estimated possible losses recognized 62,299 15,024
Tax    
Disclosure Of Nature And Amount Of Loss Contingencies [line items]    
Estimated possible losses recognized R$ 30,324 R$ 0