v3.25.4
Marketable securities (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Disclosure of financial assets [line items]    
Marketable Securities R$ 10,252,454 R$ 13,363,511
Current 9,932,774 12,971,547
Non-Current 319,680 391,964
Country of domicile    
Disclosure of financial assets [line items]    
Marketable Securities 9,825,125 13,293,256
Foreign countries    
Disclosure of financial assets [line items]    
Marketable Securities R$ 427,329 70,255
Private Funds | CDI    
Disclosure of financial assets [line items]    
Percentage of basis used to calculate interest rate 99.71%  
Private Funds | Country of domicile    
Disclosure of financial assets [line items]    
Marketable Securities R$ 526,526 552,635
Private Securities | CDI/IPCA    
Disclosure of financial assets [line items]    
Percentage of basis used to calculate interest rate 6.14%  
Private Securities | Country of domicile    
Disclosure of financial assets [line items]    
Marketable Securities R$ 1,274,439 1,203,776
Private Securities (CDBs) | CDI    
Disclosure of financial assets [line items]    
Percentage of basis used to calculate interest rate 100.91%  
Private Securities (CDBs) | Country of domicile    
Disclosure of financial assets [line items]    
Marketable Securities R$ 7,045,434 11,144,881
CDBs - Escrow Account | CDI    
Disclosure of financial assets [line items]    
Percentage of basis used to calculate interest rate 99.61%  
CDBs - Escrow Account | Country of domicile    
Disclosure of financial assets [line items]    
Marketable Securities R$ 319,680 391,964
Time Deposits | Foreign countries    
Disclosure of financial assets [line items]    
Marketable Securities R$ 421,291  
Time Deposits | Foreign countries | Fixed    
Disclosure of financial assets [line items]    
Average yield p.a. % 4.68%  
Other | Foreign countries    
Disclosure of financial assets [line items]    
Marketable Securities R$ 6,038 R$ 70,255
Other (Restricted financial investment) | CDI    
Disclosure of financial assets [line items]    
Percentage of basis used to calculate interest rate 99.99%  
Other (Restricted financial investment) | Country of domicile    
Disclosure of financial assets [line items]    
Marketable Securities R$ 25,618  
Public Securities - Instituto de Crédito Oficial (ICO) | Fixed    
Disclosure of financial assets [line items]    
Percentage of basis used to calculate interest rate 12.64%  
Public Securities - Instituto de Crédito Oficial (ICO) | Country of domicile    
Disclosure of financial assets [line items]    
Marketable Securities R$ 633,428