v3.25.4
Biological assets - Roll-forward of biological assets (Details) - BRL (R$)
R$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of reconciliation of changes in biological assets [line items]      
Opening Balance R$ 22,283,001 R$ 18,278,582  
Additions 7,913,483 7,180,450  
Additions of merged companies 366,785  
Depletions (5,352,271) (4,831,916)  
Transfers 15,233 102,790  
Gain on fair value adjustments (Note 29) (1,516,458) (1,431,530) R$ (1,989,831)
Disposals (107,815) (130,922)  
Write-offs (170,925) (114,298)  
Closing Balance R$ 26,097,164 R$ 22,283,001 R$ 18,278,582
Effective Area For Forest From The Year Of Planting 3 years    
Bottom of range [member]      
Disclosure of reconciliation of changes in biological assets [line items]      
Average Cycle for Formation of Forests, Biological Assets 6 years    
Top of range      
Disclosure of reconciliation of changes in biological assets [line items]      
Average Cycle for Formation of Forests, Biological Assets 7 years