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Shareholders' equity - Business Combinations (Details) R$ in Thousands, $ in Millions | Dec. 31, 2024 BRL (R$) | Dec. 31, 2023 BRL (R$) | Mar. 04, 2023 BRL (R$) | Mar. 04, 2023 USD ($)
--- | --- | --- | --- | ---
Disclosure of classes of share capital [line items] |  |  |  |
HPX Liabilities |  | R$ 285,206 |  |
HPX net assets |  | R$ 373,153 |  |
HPX Corporation [Member] |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |
Cost of shares issued | R$ 146,741 |  |  |
Fair value of Earn-out shares | (44,240) |  |  |
Adjusted cost of shares issued to HPX shareholders | 102,501 |  |  |
HPX Assets | 48,083 |  |  |
HPX Liabilities | 49,676 |  |  |
HPX net assets |  |  | R$ (1,593) |
Stock listing expense | R$ 100,909 |  | R$ 100,900 | $ 19.4

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