v3.26.1
Financial instruments and risk management (Details 1) - BRL (R$)
R$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
IfrsStatementLineItems [Line Items]    
Total assets R$ 3,266,967 R$ 3,903,061
Financial assets at fair value through profit or loss 3,266,967 3,903,061
Derivative financial instruments 452,203 379,888
Marketable securities 2,300,655 2,449,682
Other financial assets 514,109 550,669
Total liabilities 168,711 224,275
Financial liabilities at fair value through profit or loss 168,711 224,275
Derivative financial instruments 168,711 224,275
Other derivatives   522,822
Level 1 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets 2,639,447 2,662,076
Financial assets at fair value through profit or loss 2,639,447 2,662,076
Derivative financial instruments
Marketable securities 2,300,655 2,449,682
Other financial assets 338,792 212,394
Total liabilities
Financial liabilities at fair value through profit or loss
Derivative financial instruments
Other derivatives  
Level 2 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Total assets 627,520 1,240,985
Financial assets at fair value through profit or loss 627,520 1,240,985
Derivative financial instruments 452,203 379,888
Marketable securities
Other financial assets 175,317 338,275
Total liabilities 168,711 224,275
Financial liabilities at fair value through profit or loss 168,711 224,275
Derivative financial instruments R$ 168,711 224,275
Other derivatives   R$ 522,822