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Financial assets at amortized cost - Securities (Details Narrative) - BRL (R$) R$ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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IfrsStatementLineItems [Line Items] |  |
Securities Pledged as Collateral of Funding Transactions of Financial Institutions and Clients | R$ 70,222 | R$ 36,852
Government Securities – Other Countries [member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities Pledged as Collateral of Funding Transactions of Financial Institutions and Clients | 39,289 | 16,738
Government securities - Latin America [member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities Pledged as Collateral of Funding Transactions of Financial Institutions and Clients | 969 | 0
Corporate Securities [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities Pledged as Collateral of Funding Transactions of Financial Institutions and Clients | R$ 29,964 | R$ 20,114

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