v3.26.1
Financial instruments and risk management - Fair value of loans and financing (Details) - Loans, financing and debentures - BRL (R$)
R$ in Thousands
 6 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about financial instruments [line items]      
Financial liabilities, at fair value R$ 90,235,107 R$ 93,828,907  
Bonds | Foreign countries | Fixed      
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$ 38,944,092 42,223,976 R$ 36,655,663
Export credits (“export prepayments”) | Foreign countries | SOFR      
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$ 16,555,562 18,404,795  
Assets Financing | Foreign countries | SOFR      
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$ 217,792 277,172  
Assets Financing | Country of domicile | SOFR      
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$ 42,477 49,911  
IFC - International Finance Corporation | Foreign countries | SOFR      
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$ 5,338,833 5,442,675  
ECA - Export Credit Agency | Foreign countries | SOFR      
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$ 1,857,691 1,979,202  
Panda Bonds - CNY | Foreign countries | Fixed      
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$ 1,949,727 1,964,329  
BNDES – TJLP | Country of domicile | BNDES – TJLP      
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$ 53,487 95,167  
BNDES – TLP | Country of domicile | BNDES – TLP      
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$ 4,150,753 4,193,766  
BNDES – Fixed | Country of domicile | Fixed      
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$ 38,822  
BNDES – TR | Country of domicile | BNDES – TR      
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$ 84,934 90,356  
BNDES – Selic (“Special Settlement and Custody System”) | Country of domicile | BNDES – SELIC      
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$ 767,119 547,000  
BNDES – UMBNDES | Country of domicile | BNDES – UMBNDES      
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$ 272,738 253,500  
Debentures | Country of domicile | CDI/IPCA      
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$ 10,952,992 10,873,596  
NCE (“Export Credit Notes”) | Country of domicile | CDI      
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$ 108,401 105,865  
NCR (“Rural Credit Notes”) | Country of domicile | CDI      
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$ 5,513,161 5,520,478  
CPR ("Rural Product Notes") | Country of domicile | CDI      
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$ 3,057,025 1,472,697  
ECO INVEST – Agroindustrial Credit | Country of domicile | Fixed      
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$ 329,501 334,422  
Bonds 2029 | Foreign countries | Fixed      
Disclosure of detailed information about financial instruments [line items]      
Financial liabilities, at fair value   R$ 5,568,313