v3.26.1
Fair value measurement (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2025
Dec. 30, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Categories of financial assets [abstract]          
Cash and cash equivalents R$ 1,857,507   R$ 927,668 R$ 2,899,060 R$ 1,829,097
Financial investments 67,499,403   66,434,546    
Compulsory reserve 4,271,581   4,761,404    
Derivatives financial instruments 4,924   58,470    
Categories of financial liabilities [abstract]          
Payables To Third Parties 10,893,747   11,642,218    
Checking accounts 12,243,699   12,030,573    
Obligations to FIDC quota holders 1,171,463   1,151,384    
Dividends to be paid   R$ 184,686      
Banking Issuances 28,427,994   24,089,234 R$ 16,188,440  
Borrowings 2,436,846   4,521,503    
Derivative financial instruments 123,951   69,969    
Quoted prices in active markets (Level 1)          
Categories of financial assets [abstract]          
Cash and cash equivalents 0   27,730    
Financial investments 195,565   124,945    
Compulsory reserve 4,271,581   4,761,404    
Accounts receivable 0   0    
Derivatives financial instruments 0   0    
Loans and advances 0   0    
Other receivables 0   0    
Judicial deposits 0   0    
Receivables from related parties 0   0    
Categories of financial liabilities [abstract]          
Payables To Third Parties 0   0    
Checking accounts 0   0    
Obligations to FIDC quota holders 0   0    
Trade payables 0   0    
Payables to related parties 0   0    
Dividends to be paid 0        
Banking Issuances 0   0    
Borrowings 0   0    
Derivative financial instruments 0   0    
Deferred revenue 0   0    
Other liabilities 0   0    
Significant observable inputs (Level 2)          
Categories of financial assets [abstract]          
Cash and cash equivalents 1,857,507   899,938    
Financial investments 394,403   362,979    
Compulsory reserve 0   0    
Accounts receivable 56,061,414   56,650,480    
Derivatives financial instruments 4,206,368   58,470    
Loans and advances 4,924   3,152,793    
Other receivables 365,465   284,367    
Judicial deposits 116,220   79,591    
Receivables from related parties 25,902   31,849    
Categories of financial liabilities [abstract]          
Payables To Third Parties 10,893,747   11,642,218    
Checking accounts 12,243,699   12,030,573    
Obligations to FIDC quota holders 1,171,463   1,151,384    
Trade payables 606,743   663,229    
Payables to related parties 780,398   1,131,246    
Dividends to be paid 184,686        
Banking Issuances 28,427,994   24,089,234    
Borrowings 2,436,846   69,969    
Derivative financial instruments 123,951   4,521,503    
Deferred revenue 109,980   145,428    
Other liabilities 106,693   198,734    
Significant unobservable inputs (Level 3)          
Categories of financial assets [abstract]          
Cash and cash equivalents 0   0    
Financial investments 0   0    
Compulsory reserve 0   0    
Accounts receivable 0   0    
Derivatives financial instruments 0   0    
Loans and advances 0   0    
Other receivables 0   0    
Judicial deposits 0   0    
Receivables from related parties 0   0    
Categories of financial liabilities [abstract]          
Payables To Third Parties 0   0    
Checking accounts 0   0    
Obligations to FIDC quota holders 0   0    
Trade payables 0   0    
Payables to related parties 0   0    
Dividends to be paid 0        
Banking Issuances 0   0    
Borrowings 0   0    
Derivative financial instruments 0   0    
Deferred revenue 0   0    
Other liabilities R$ 0   R$ 0