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Marketable securities (Details) - BRL (R$) R$ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Disclosure of financial assets [line items] |  |
Marketable Securities | R$ 6,918,765 | R$ 13,363,511
Current | 6,516,323 | 12,971,547
Non-Current | 402,442 | 391,964
Country of domicile |  |
Disclosure of financial assets [line items] |  |
Marketable Securities | 6,868,895 | 13,293,256
Foreign countries |  |
Disclosure of financial assets [line items] |  |
Marketable Securities | R$ 49,870 | 70,255
Private Funds | CDI |  |
Disclosure of financial assets [line items] |  |
Percentage of basis used to calculate interest rate | 98.90% |
Private Funds | Country of domicile |  |
Disclosure of financial assets [line items] |  |
Marketable Securities | R$ 382,388 | 552,635
Private Securities | CDI/IPCA |  |
Disclosure of financial assets [line items] |  |
Percentage of basis used to calculate interest rate | 6.15% |
Private Securities | Country of domicile |  |
Disclosure of financial assets [line items] |  |
Marketable Securities | R$ 1,227,033 | 1,203,776
Private Securities (CDBs) | CDI |  |
Disclosure of financial assets [line items] |  |
Percentage of basis used to calculate interest rate | 100.80% |
Private Securities (CDBs) | Country of domicile |  |
Disclosure of financial assets [line items] |  |
Marketable Securities | R$ 4,833,953 | 11,144,881
CDBs - Escrow Account | CDI |  |
Disclosure of financial assets [line items] |  |
Percentage of basis used to calculate interest rate | 101.76% |
CDBs - Escrow Account | Country of domicile |  |
Disclosure of financial assets [line items] |  |
Marketable Securities | R$ 402,442 | 391,964
Other | Foreign countries |  |
Disclosure of financial assets [line items] |  |
Marketable Securities | R$ 49,870 | 70,255
Other (Restricted financial investment) | CDI |  |
Disclosure of financial assets [line items] |  |
Percentage of basis used to calculate interest rate | 99.30% |
Other (Restricted financial investment) | Country of domicile |  |
Disclosure of financial assets [line items] |  |
Marketable Securities | R$ 23,079 |

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