Risk management and financial instruments - Schedule of Assets and Liabilities Exposed to Floating Interest Rates (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Net exposure to the CDI rate:
Total	$ 204,822	$ (289,012)
Net exposure to the IPCA rate:
Total	(1,906,059)	(1,356,119)
Liabilities exposure to the SOFR rate:
Total	(152,287)	(266,594)
Liabilities exposure to the Euribor rate:
Total	(95,709)	(89,049)
CRA - Agribusiness Credit Receivable Certificates
Net exposure to the CDI rate:
Total	(138,069)	(54,231)
Net exposure to the IPCA rate:
Total	(2,171,733)	(2,165,193)
Credit note - export
Net exposure to the CDI rate:
Total	0	(410)
Rural - Credit note
Net exposure to the CDI rate:
Total	(205,139)	(114,282)
Related party transactions
Net exposure to the CDI rate:
Total	(102,646)	(105,892)
Net exposure to the IPCA rate:
Total	17,124	(43,875)
CDB-DI (Bank certificates of deposit)
Net exposure to the CDI rate:
Total	831,847	727,695
CME Margin investments
Net exposure to the CDI rate:
Total	36,648	105,760
Treasury bills
Net exposure to the CDI rate:
Total	118,871	75,286
Net exposure to the IPCA rate:
Total	42,593	47,920
Debentures
Net exposure to the IPCA rate:
Total	(75,667)	0
Subtotal
Net exposure to the CDI rate:
Total	541,512	633,926
Net exposure to the IPCA rate:
Total	(2,187,683)	(2,161,148)
Derivatives (Swap)
Net exposure to the CDI rate:
Total	(336,690)	(922,938)
Net exposure to the IPCA rate:
Total	281,624	805,029
Export credit note
Liabilities exposure to the SOFR rate:
Total	0	(254,903)
Prepayment - exchange agreement
Liabilities exposure to the SOFR rate:
Total	(150,330)	0
Working Capital - USD
Liabilities exposure to the SOFR rate:
Total	(1,957)	(11,691)
Liabilities exposure to the Euribor rate:
Total	(45,467)	(55,348)
Revolving credit facility
Liabilities exposure to the Euribor rate:
Total	$ (50,242)	$ (33,701)