v3.25.1
Income taxes - Deferred taxes (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2025
Mar. 31, 2025
Dec. 31, 2024
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Non-current assets   R$ 4,431,946 R$ 7,984,015
Non-current liabilities   12,596
Derivative, passive temporary difference R$ 1,396,134    
Derivative, asset temporary difference 2,413,299    
Lease, passive temporary difference 1,741,146    
Lease, asset temporary difference R$ 2,283,754    
Total deferred tax assets      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets   10,541,364 14,124,914
Tax loss carried forward      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets   796,552 796,831
Negative tax basis of social contribution carried forward      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets   304,015 307,143
Provision for judicial liabilities      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets   308,825 324,873
Operating provisions      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets   330,443 515,779
Exchange rate variations      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets   5,381,844 7,385,034
Derivatives losses (“MtM”)(1)      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets   1,017,165 2,230,835
Amortization of fair value adjustments arising from business combinations      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets   624,513 625,745
Unrealized profit on inventories      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets   423,772 539,157
Leases      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets   542,608 606,944
Total deferred tax liabilities      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax liabilities   6,109,418 6,153,495
Goodwill - Tax benefit on unamortized goodwill      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax liabilities   1,661,945 1,589,887
Property, plant and equipment - deemed cost      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax liabilities   1,050,988 1,066,883
Depreciation for tax-incentive reason      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax liabilities   717,303 733,640
Capitalized loan costs      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax liabilities   938,284 947,482
Fair value of biological assets      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax liabilities   1,237,672 1,317,095
Deferred taxes, net of fair value adjustment      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax liabilities   335,034 342,141
Tax credits - gains from tax lawsuit (exclusion of ICMS from the PIS and COFINS basis)      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax liabilities   129,893 137,928
Provision of deferred taxes on results of subsidiaries abroad      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax liabilities   33,476
Other temporary differences      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax liabilities   4,823 18,439
Provisions for other losses      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets   563,416 547,242
Employee benefit plans      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets   R$ 248,211 R$ 245,331