v3.26.1
Provision for judicial liabilities - Roll-forward and changes in the provision for probable losses, net of judicial deposits (Details)
R$ in Thousands
 6 Months Ended
Jun. 30, 2026
BRL (R$)
item
Jun. 30, 2025
BRL (R$)
Dec. 31, 2025
BRL (R$)
item
Probable losses      
Disclosure of other provisions [line items]      
Balance provision at the beginning for the period R$ 2,916,889 R$ 3,105,168  
Payments (44,614) (194,708)  
Provisions/(Reversals), net (8,674) (82,122)  
Monetary adjustment 38,453 88,551  
Provision Balance 2,902,054    
Judicial deposits (146,355)   R$ (115,151)
Balance provision at the end for the period 2,755,699   2,801,738
Probable losses | Tax assessment - Corporate Income Tax and Social Contribution      
Disclosure of other provisions [line items]      
Other provisions 1,822   1,749
Probable losses | Tax and social security      
Disclosure of other provisions [line items]      
Balance provision at the beginning for the period 339,763 407,964  
Payments (874) (71,692)  
Provisions/(Reversals), net (6,854) (36,578)  
Monetary adjustment 13,191 40,069  
Provision Balance 345,226    
Judicial deposits (32,453)   (31,579)
Balance provision at the end for the period 312,773   308,184
Probable losses | Labor      
Disclosure of other provisions [line items]      
Balance provision at the beginning for the period 296,358 353,926  
Payments (25,406) (113,840)  
Provisions/(Reversals), net (6,444) (28,281)  
Monetary adjustment 10,189 27,991  
Provision Balance 287,585    
Judicial deposits (50,613)   (62,334)
Balance provision at the end for the period 236,972   234,024
Probable losses | Civil, environment and real estate      
Disclosure of other provisions [line items]      
Balance provision at the beginning for the period 185,411 215,553  
Payments (18,334) (9,176)  
Provisions/(Reversals), net (28,744) (41,457)  
Monetary adjustment 15,073 20,491  
Provision Balance 210,894    
Judicial deposits (63,289)   (21,238)
Balance provision at the end for the period 147,605   164,173
Probable losses | Classes of contingent liabilities [domain]      
Disclosure of other provisions [line items]      
Balance provision at the beginning for the period 2,095,357 2,127,725  
Payments  
Provisions/(Reversals), net (37,008) (32,368)  
Monetary adjustment  
Provision Balance 2,058,349    
Balance provision at the end for the period R$ 2,058,349   R$ 2,095,357
Possible losses and remote losses | Labor      
Disclosure of other provisions [line items]      
Number of Lawsuits | item 1,076   1,152
Possible losses and remote losses | Civil, environment and real estate      
Disclosure of other provisions [line items]      
Number of Lawsuits | item 88   73
Possible losses and remote losses | Civil, environment and real estate | Fibria      
Disclosure of other provisions [line items]      
Loss Contingency, Estimate of Possible Loss R$ 127,076   R$ 132,808
Possible losses and remote losses | Tax contingent liability | Fibria      
Disclosure of other provisions [line items]      
Loss Contingency, Estimate of Possible Loss R$ 1,931,273   R$ 1,962,549