v3.26.1
Shareholders' equity (Details 2) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 16, 2025
IfrsStatementLineItems [Line Items]    
Interest on shareholders equity R$ 4,000,000 R$ 4,000,000
Interest on shareholders equity R$ 3,500,000  
Other equity interest [member]    
IfrsStatementLineItems [Line Items]    
Approval date Mar. 19, 2024  
Payment date Apr. 22, 2024  
Interest on shareholders equity R$ 200,000  
Other Equity Interest One [Member]    
IfrsStatementLineItems [Line Items]    
Approval date Jun. 14, 2024  
Payment date Jul. 23, 2024  
Interest on shareholders equity R$ 300,000  
Other Equity Interest Two [Member]    
IfrsStatementLineItems [Line Items]    
Approval date Sep. 17, 2024  
Payment date Oct. 23, 2024  
Interest on shareholders equity R$ 300,000  
Other Equity Interest Three [Member]    
IfrsStatementLineItems [Line Items]    
Approval date Dec. 17, 2024  
Payment date Jan. 23, 2025  
Interest on shareholders equity R$ 650,000  
Other Equity Interest Four [Member]    
IfrsStatementLineItems [Line Items]    
Approval date Feb. 10, 2025  
Interest on shareholders equity R$ 2,050,000  
Other Equity Interest Four One [Member]    
IfrsStatementLineItems [Line Items]    
Payment date Apr. 22, 2025  
Other Equity Interest Four Two [Member]    
IfrsStatementLineItems [Line Items]    
Payment date Jul. 23, 2025  
Other Equity Interest Four Three [Member]    
IfrsStatementLineItems [Line Items]    
Payment date Oct. 23, 2025  
Other Equity Interest Five [Member]    
IfrsStatementLineItems [Line Items]    
Approval date Feb. 10, 2025  
Payment date Apr. 22, 2025  
Interest on shareholders equity R$ 200,000  
Other Equity Interest Six [Member]    
IfrsStatementLineItems [Line Items]    
Approval date Mar. 24, 2025  
Payment date Apr. 30, 2026  
Interest on shareholders equity R$ 490,000  
Other Equity Interest Seven [Member]    
IfrsStatementLineItems [Line Items]    
Approval date May 05, 2025  
Payment date Jul. 23, 2025  
Interest on shareholders equity R$ 300,000  
Other Equity Interest Eight [Member]    
IfrsStatementLineItems [Line Items]    
Approval date Jul. 22, 2025  
Payment date Oct. 21, 2025  
Interest on shareholders equity R$ 320,000  
Other Equity Interest Nine [Member]    
IfrsStatementLineItems [Line Items]    
Approval date Sep. 23, 2025  
Payment date Jan. 21, 2026  
Interest on shareholders equity R$ 480,000  
Other Equity Interest Ten [Member]    
IfrsStatementLineItems [Line Items]    
Approval date Dec. 16, 2025  
Payment date Jun. 30, 2026  
Interest on shareholders equity R$ 420,000  
Other Equity Interest Eleven [Member]    
IfrsStatementLineItems [Line Items]    
Approval date Dec. 16, 2025  
Payment date Dec. 30, 2025  
Interest on shareholders equity R$ 1,790,000