Loans, financing and debentures - Roll-forward of loans, financing and debentures (Details) - BRL (R$) R$ in Thousands |
9 Months Ended | 12 Months Ended |
|---|---|---|
Sep. 30, 2025 |
Dec. 31, 2024 |
|
| Disclosure of detailed information about borrowings [abstract] | ||
| Opening balance | R$ 101,435,531 | R$ 77,172,692 |
| Fundraising, net of issuance costs | 22,324,556 | 15,692,905 |
| Interest accrued | 4,399,815 | 5,413,707 |
| Monetary and exchange rate variation, net | (10,914,087) | 17,728,324 |
| Settlement of principal | (19,600,013) | (9,410,807) |
| Settlement of interest | (4,753,232) | (5,241,389) |
| Amortization of fundraising costs | 75,916 | 80,099 |
| Other Changes in Borrowings | (6,281) | |
| Closing balance | R$ 92,962,205 | R$ 101,435,531 |