v3.26.1
Financial instruments and risk management - Fair value of loans and financing (Details) - Loans, financing and debentures - BRL (R$)
R$ in Thousands
 3 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about financial instruments [table]      
Financial liabilities, at fair value R$ 91,134,497 R$ 93,828,907  
Disclosure of detailed information about financial instruments [line items]      
Financial liabilities, at fair value R$ 91,134,497 93,828,907  
Bonds | Foreign countries | Fixed      
Disclosure of detailed information about financial instruments [table]      
Description of valuation techniques used to measure fair value less costs of disposal Secondary Market    
Financial liabilities, at fair value R$ 39,077,766 42,223,976 R$ 36,655,663
Disclosure of detailed information about financial instruments [line items]      
Description of valuation techniques used to measure fair value less costs of disposal Secondary Market    
Financial liabilities, at fair value R$ 39,077,766 42,223,976 R$ 36,655,663
Export credits (“export prepayments”) | Foreign countries | SOFR      
Disclosure of detailed information about financial instruments [table]      
Description of valuation techniques used to measure fair value less costs of disposal SOFR    
Financial liabilities, at fair value R$ 17,344,704 18,404,795  
Disclosure of detailed information about financial instruments [line items]      
Description of valuation techniques used to measure fair value less costs of disposal SOFR    
Financial liabilities, at fair value R$ 17,344,704 18,404,795  
Export credits (“export prepayments”) | Country of domicile | Fixed      
Disclosure of detailed information about financial instruments [table]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 345,644 334,422  
Disclosure of detailed information about financial instruments [line items]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 345,644 334,422  
Assets Financing | Foreign countries | SOFR      
Disclosure of detailed information about financial instruments [table]      
Description of valuation techniques used to measure fair value less costs of disposal SOFR    
Financial liabilities, at fair value R$ 238,833 277,172  
Disclosure of detailed information about financial instruments [line items]      
Description of valuation techniques used to measure fair value less costs of disposal SOFR    
Financial liabilities, at fair value R$ 238,833 277,172  
Assets Financing | Country of domicile | SOFR      
Disclosure of detailed information about financial instruments [table]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 46,254 49,911  
Disclosure of detailed information about financial instruments [line items]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 46,254 49,911  
ECA - Export Credit Agency | Foreign countries | SOFR      
Disclosure of detailed information about financial instruments [table]      
Description of valuation techniques used to measure fair value less costs of disposal SOFR    
Financial liabilities, at fair value R$ 1,860,820 1,979,202  
Disclosure of detailed information about financial instruments [line items]      
Description of valuation techniques used to measure fair value less costs of disposal SOFR    
Financial liabilities, at fair value R$ 1,860,820 1,979,202  
IFC - International Finance Corporation | Foreign countries | SOFR      
Disclosure of detailed information about financial instruments [table]      
Description of valuation techniques used to measure fair value less costs of disposal SOFR    
Financial liabilities, at fair value R$ 5,137,756 5,442,675  
Disclosure of detailed information about financial instruments [line items]      
Description of valuation techniques used to measure fair value less costs of disposal SOFR    
Financial liabilities, at fair value R$ 5,137,756 5,442,675  
Panda Bonds - CNH [Member] | Foreign countries | Fixed      
Disclosure of detailed information about financial instruments [table]      
Description of valuation techniques used to measure fair value less costs of disposal Fixed    
Financial liabilities, at fair value R$ 1,910,093 1,964,329  
Disclosure of detailed information about financial instruments [line items]      
Description of valuation techniques used to measure fair value less costs of disposal Fixed    
Financial liabilities, at fair value R$ 1,910,093 1,964,329  
BNDES – TJLP [Member] | Country of domicile | BNDES – TJLP      
Disclosure of detailed information about financial instruments [table]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 75,327 95,167  
Disclosure of detailed information about financial instruments [line items]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 75,327 95,167  
BNDES – TLP [Member] | Country of domicile | BNDES – TLP      
Disclosure of detailed information about financial instruments [table]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 4,192,908 4,193,766  
Disclosure of detailed information about financial instruments [line items]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 4,192,908 4,193,766  
BNDES | Country of domicile | Fixed      
Disclosure of detailed information about financial instruments [table]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 5,313  
Disclosure of detailed information about financial instruments [line items]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 5,313  
BNDES | Country of domicile | BNDES – SELIC      
Disclosure of detailed information about financial instruments [table]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 499,308 547,000  
Disclosure of detailed information about financial instruments [line items]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 499,308 547,000  
BNDES – TR | Country of domicile | BNDES – TR      
Disclosure of detailed information about financial instruments [table]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 89,170 90,356  
Disclosure of detailed information about financial instruments [line items]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 89,170 90,356  
BNDES - US$ | Country of domicile | BNDES - US$      
Disclosure of detailed information about financial instruments [table]      
Description of valuation techniques used to measure fair value less costs of disposal DI 2    
Financial liabilities, at fair value R$ 252,407 253,500  
Disclosure of detailed information about financial instruments [line items]      
Description of valuation techniques used to measure fair value less costs of disposal DI 2    
Financial liabilities, at fair value R$ 252,407 253,500  
Debentures | Country of domicile | CDI/IPCA      
Disclosure of detailed information about financial instruments [table]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1/IPCA    
Financial liabilities, at fair value R$ 11,342,213 10,873,596  
Disclosure of detailed information about financial instruments [line items]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1/IPCA    
Financial liabilities, at fair value R$ 11,342,213 10,873,596  
NCE ("Export Credit Notes") | Country of domicile | CDI      
Disclosure of detailed information about financial instruments [table]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 105,376 105,865  
Disclosure of detailed information about financial instruments [line items]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 105,376 105,865  
NCR ("Rural Credit Notes") | Country of domicile | CDI      
Disclosure of detailed information about financial instruments [table]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 5,509,365 5,520,478  
Disclosure of detailed information about financial instruments [line items]      
Description of valuation techniques used to measure fair value less costs of disposal DI 1    
Financial liabilities, at fair value R$ 5,509,365 5,520,478  
Rural Producer Note (CPR) | Country of domicile | CDI      
Disclosure of detailed information about financial instruments [table]      
Financial liabilities, at fair value 3,101,240 1,472,697  
Disclosure of detailed information about financial instruments [line items]      
Financial liabilities, at fair value R$ 3,101,240 1,472,697  
Bonds 2029 | Foreign countries | Fixed      
Disclosure of detailed information about financial instruments [table]      
Financial liabilities, at fair value   5,568,313  
Disclosure of detailed information about financial instruments [line items]      
Financial liabilities, at fair value   R$ 5,568,313