v3.25.4
Property, plant and equipment - Items pledged as collateral (Details) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about property, plant and equipment [abstract]    
Disclosure of Property, Plant and Equipment Pledged as Collateral [Table]
Type of collateral12/31/202512/31/2024
LandFinancial/Legal25,562 24,427 
BuildingsFinancial1,719,004 1,755,082 
Machinery, equipment and facilitiesFinancial19,437,703 20,442,189 
Work in progressFinancial339,063 427,998 
OtherFinancial48,475 43,487 
21,569,807 22,693,183 
  
Disclosure of Property, Plant and Equipment Pledged as Collateral [Line Items]    
Property, plant and equipment, pledged as security R$ 21,569,807 R$ 22,693,183
Land    
Disclosure of Property, Plant and Equipment Pledged as Collateral [Line Items]    
Property, plant and equipment, pledged as security 25,562 24,427
Buildings    
Disclosure of Property, Plant and Equipment Pledged as Collateral [Line Items]    
Property, plant and equipment, pledged as security 1,719,004 1,755,082
Machinery, equipment and facilities    
Disclosure of Property, Plant and Equipment Pledged as Collateral [Line Items]    
Property, plant and equipment, pledged as security 19,437,703 20,442,189
Work in progress    
Disclosure of Property, Plant and Equipment Pledged as Collateral [Line Items]    
Property, plant and equipment, pledged as security 339,063 427,998
Other    
Disclosure of Property, Plant and Equipment Pledged as Collateral [Line Items]    
Property, plant and equipment, pledged as security R$ 48,475 R$ 43,487