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Loans, financing and debentures - Significant transactions settled during the period (Details) | Sep. 26, 2025 BRL (R$) | Sep. 19, 2025 USD ($) | Sep. 19, 2025 BRL (R$) | Sep. 11, 2025 USD ($) | Sep. 11, 2025 BRL (R$) | Jun. 09, 2025 USD ($) | Jun. 09, 2025 BRL (R$) | May 21, 2025 USD ($) | May 21, 2025 BRL (R$) | May 17, 2025 USD ($) | May 17, 2025 BRL (R$) | Apr. 24, 2025 USD ($) | Apr. 24, 2025 BRL (R$) | Mar. 24, 2025 BRL (R$) | Mar. 10, 2025 USD ($) | Mar. 10, 2025 BRL (R$) | Jan. 14, 2025 USD ($) | Jan. 14, 2025 BRL (R$)
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Several banks (a syndicated operation) [Member] | March 2027 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,486,064 | R$ 8,608,769 |  |
Several banks (a syndicated operation) [Member] | SOFR | March 2027 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, adjustment to interest rate basis |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.40% | 1.40% |  |
Bonds | Bond Maturity Date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 346,445 | R$ 2,101,917
Bonds | Interest rate | Bond Maturity Date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, adjustment to interest rate basis |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.00% | 4.00%
Rural Producer Note (CPR) | March 2025 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  |  |  |  |  |  |  | R$ 221,942 |  |  |  |
Rural Producer Note (CPR) | CDI | March 2025 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, adjustment to interest rate basis |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |
Export Prepayment Agreements ("EPP") - JP Morgan | SOFR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, adjustment to interest rate basis |  |  |  |  |  |  |  |  |  |  |  | 1.93% | 1.93% |  |  |  |  |
Export Prepayment Agreements ("EPP") - JP Morgan | Term, 3-month |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  |  |  |  |  | $ 153,869 | R$ 873,023 |  |  |  |  |
Advance of exchange contract (ACC) - BNP Paribas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  |  |  | $ 15,988 | R$ 89,170,000 | $ 37,123 | R$ 210,942 | $ 106,585 | R$ 605,819 |  |  |  |  |  |  |
Debentures [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount | R$ 811,766 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bonds 2027 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  | $ 304,737 | R$ 1,623,519 | $ 401,545 | R$ 2,162,639 |  |  |  |  |  |  |  |  |  |  |  |  |
Bonds 2027 | SOFR | January 2027 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, adjustment to interest rate basis |  |  |  | 5.50% | 5.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Bonds 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount |  |  |  | $ 233,807 | R$ 1,259,239 |  |  |  |  |  |  |  |  |  |  |  |  |
Bonds 2026 | Fixed | March 2027 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, adjustment to interest rate basis |  |  |  | 5.75% | 5.75% |  |  |  |  |  |  |  |  |  |  |  |  |

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