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Gains (losses) on financial assets and liabilities (net) (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Gains Losses On Financial Assets And Liabilities |  |  |
Financial Assets Measured At Fair Value Through Profit Or Loss (1) | R$ 7,889,797 | R$ (641,147) | R$ 3,440,830
Financial Assets Not Measured At Fair Value Through Profit Or Loss | (416,389) | (180,427) | (463,844)
Debt instruments | (401,079) | (105,789) | (42,405)
Equity instruments | (15,310) | (74,638) | (421,439)
Of which: Financial Assets Measured At Fair Value Through Other Comprehensive Income |  |  |
Gains or losses from hedge accounting, net | 3,471,911 | (537,100) | (247,467)
Total | R$ 10,945,319 | R$ (1,358,674) | R$ 2,729,519

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