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Derivatives (Details 6) - BRL (R$) R$ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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IfrsStatementLineItems [Line Items] |  |
Gross amount of recognized financial assets | R$ 92,439 | R$ 55,251
Net amount of financial assets presented in the statement of financial position | 92,439 | 55,251
Related amounts not offset in the statement of Financial position, financial instruments | (637) | (16,409)
Net amount | 91,435 | 38,486
Related amounts not offset in the statement of Financial position, cash collateral received | (367) | (356)
Gross amount of recognized financial liabilities | 85,413 | 52,475
Net amount of financial assets presented in the statement of financial position | 85,413 | 52,475
Related amounts not offset in the statement of Financial position, financial instruments | (637) | (16,409)
Net amount | 84,776 | 36,066
Securities Purchased Under Agreements To Resell [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Gross amount of recognized financial assets | 243,219 | 238,308
Net amount of financial assets presented in the statement of financial position | 243,219 | 238,308
Related amounts not offset in the statement of Financial position, financial instruments | (11,648) | (1,504)
Net amount | 231,571 | 236,804
Gross amount of recognized financial liabilities | 388,787 | 362,786
Net amount of financial assets presented in the statement of financial position | 388,787 | 362,786
Related amounts not offset in the statement of Financial position, financial instruments | (309,008) | (39,708)
Net amount | R$ 79,779 | R$ 323,078

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