v3.25.1
Property, plant and equipment - Items pledged as collateral (Details) - BRL (R$)
R$ in Thousands
 3 Months Ended
Mar. 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 collateral3/31/202512/31/2024
LandFinancial/Legal24,427 24,427 
BuildingsFinancial1,757,860 1,755,082 
Machinery, equipment and facilitiesFinancial20,158,141 20,442,189 
Work in progressFinancial413,767 427,998 
OtherFinancial39,826 43,487 
22,394,021 22,693,183 
  
Disclosure of Property, Plant and Equipment Pledged as Collateral [Line Items]    
Property, plant and equipment, pledged as security R$ 22,394,021 R$ 22,693,183
Land    
Disclosure of Property, Plant and Equipment Pledged as Collateral [Line Items]    
Property, plant and equipment, pledged as security 24,427 24,427
Buildings    
Disclosure of Property, Plant and Equipment Pledged as Collateral [Line Items]    
Property, plant and equipment, pledged as security 1,757,860 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 20,158,141 20,442,189
Work in progress    
Disclosure of Property, Plant and Equipment Pledged as Collateral [Line Items]    
Property, plant and equipment, pledged as security 413,767 427,998
Other    
Disclosure of Property, Plant and Equipment Pledged as Collateral [Line Items]    
Property, plant and equipment, pledged as security R$ 39,826 R$ 43,487