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Financial instruments - Fair value of loans and financing (Details) - Loans, financing and debentures - BRL (R$) R$ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Disclosure of detailed information about financial instruments [table] |  |
Financial liabilities, at fair value | R$ 93,897,107 | R$ 98,802,972
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, at fair value | R$ 93,897,107 | 98,802,972
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$ 42,756,587 | 48,734,909
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$ 42,756,587 | 48,734,909
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$ 19,409,883 | 22,740,891
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$ 19,409,883 | 22,740,891
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$ 346,764 |
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$ 346,764 |
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$ 300,405 | 422,115
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$ 300,405 | 422,115
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$ 53,062 | 60,566
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$ 53,062 | 60,566
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$ 1,975,509 | 864,202
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$ 1,975,509 | 864,202
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$ 5,437,090 | 6,261,715
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$ 5,437,090 | 6,261,715
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$ 908,265 | 951,125
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$ 908,265 | 951,125
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$ 113,687 | 171,109
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$ 113,687 | 171,109
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$ 3,841,771 | 3,275,012
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$ 3,841,771 | 3,275,012
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$ 582,277 | 645,139
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$ 582,277 | 645,139
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$ 45,234 | 33,466
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$ 45,234 | 33,466
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$ 249,135 | 106,966
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$ 249,135 | 106,966
Debentures [Member] | 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$ 11,072,428 | 12,002,992
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$ 11,072,428 | 12,002,992
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$ 106,315 | 108,308
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$ 106,315 | 108,308
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$ 5,294,223 | 2,424,457
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$ 5,294,223 | 2,424,457
Rural Producer Note (CPR) | Country of domicile | CDI |  |
Disclosure of detailed information about financial instruments [table] |  |
Financial liabilities, at fair value | 1,404,472 |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities, at fair value | R$ 1,404,472 |

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