v3.25.1
Property, plant and equipment - Summary (Details) - BRL (R$)
R$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance R$ 64,986,040 R$ 59,289,069
Additions 1,231,900 7,936,068
Acquisitions through business combinations, property, plant and equipment   1,702,768
Write-offs (15,548) (146,002)
Depreciation (1,197,348) (3,803,941)
Transfers and other 612 8,078
Ending balance 65,005,656 64,986,040
Land    
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance 16,775,348 14,859,189
Additions 3,211 697
Acquisitions through business combinations, property, plant and equipment   1,699,588
Write-offs (10,724)
Depreciation
Transfers and other 1,351 226,598
Ending balance R$ 16,779,910 16,775,348
Buildings    
Disclosure of detailed information about property, plant and equipment [line items]    
Average rate % 3.17%  
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance R$ 9,522,593 5,906,494
Additions 7 558
Acquisitions through business combinations, property, plant and equipment   775
Write-offs (799) (7,455)
Depreciation (104,786) (366,398)
Transfers and other 434,293 3,988,619
Ending balance R$ 9,851,308 9,522,593
Machinery, equipment and facilities    
Disclosure of detailed information about property, plant and equipment [line items]    
Average rate % 7.29%  
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance R$ 34,280,498 20,537,952
Additions 100,643 415,147
Acquisitions through business combinations, property, plant and equipment   413
Write-offs (12,247) (118,499)
Depreciation (1,020,232) (3,214,550)
Transfers and other 674,587 16,660,035
Ending balance 34,023,249 34,280,498
Work in progress    
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance 3,510,535 17,485,109
Additions 1,121,983 7,490,762
Acquisitions through business combinations, property, plant and equipment  
Write-offs
Depreciation
Transfers and other (1,171,314) (21,465,336)
Ending balance R$ 3,461,204 3,510,535
Other    
Disclosure of detailed information about property, plant and equipment [line items]    
Average rate % 19.89%  
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance R$ 897,066 500,325
Additions 6,056 28,904
Acquisitions through business combinations, property, plant and equipment   1,992
Write-offs (2,502) (9,324)
Depreciation (72,330) (222,993)
Transfers and other 61,695 598,162
Ending balance 889,985 897,066
Accumulated cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance 98,731,202 92,324,815
Ending balance 99,899,093 98,731,202
Accumulated cost | Land    
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance 16,775,348 14,859,189
Ending balance 16,779,910 16,775,348
Accumulated cost | Buildings    
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance 13,816,631 10,032,317
Ending balance 14,249,711 13,816,631
Accumulated cost | Machinery, equipment and facilities    
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance 62,822,096 48,456,537
Ending balance 63,547,914 62,822,096
Accumulated cost | Work in progress    
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance 3,510,535 17,485,109
Ending balance 3,461,204 3,510,535
Accumulated cost | Other    
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance 1,806,592 1,491,663
Ending balance 1,860,354 1,806,592
Accumulated depreciation    
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance (33,745,162) (33,035,746)
Ending balance (34,893,437) (33,745,162)
Accumulated depreciation | Land    
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance
Ending balance
Accumulated depreciation | Buildings    
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance (4,294,038) (4,125,823)
Ending balance (4,398,403) (4,294,038)
Accumulated depreciation | Machinery, equipment and facilities    
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance (28,541,598) (27,918,585)
Ending balance (29,524,665) (28,541,598)
Accumulated depreciation | Work in progress    
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance
Ending balance
Accumulated depreciation | Other    
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance (909,526) (991,338)
Ending balance R$ (970,369) R$ (909,526)