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Securities sold under repurchase agreements and interbank and institutional market funds (Details) - BRL (R$) R$ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | R$ 388,787 | R$ 362,786
Current [member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | 345,633 | 331,405
Non Current [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | 43,154 | 31,381
Assets Pledged As Collateral [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | 168,872 | 159,719
Assets Pledged As Collateral [Member] | Government Securities – Other Countries [member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | R$ 126,565 | 128,600
Assets Pledged As Collateral [Member] | Government Securities – Other Countries [member] | Top of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Percentage of securities sold under repurchase agreements | 11.80% |
Assets Pledged As Collateral [Member] | Government Securities – Other Countries [member] | Bottom of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Percentage of securities sold under repurchase agreements | 12.15% |
Assets Pledged As Collateral [Member] | Corporate Securities [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | R$ 41,275 | 30,714
Assets Pledged As Collateral [Member] | Corporate Securities [Member] | Top of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Percentage of securities sold under repurchase agreements | 40.00% |
Assets Pledged As Collateral [Member] | Corporate Securities [Member] | Bottom of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Percentage of securities sold under repurchase agreements | 100.00% |
Assets Pledged As Collateral [Member] | Own Issue [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | R$ 2 | 8
Assets Pledged As Collateral [Member] | Own Issue [Member] | Top of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Percentage of securities sold under repurchase agreements | 13.80% |
Assets Pledged As Collateral [Member] | Own Issue [Member] | Bottom of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Percentage of securities sold under repurchase agreements | 10.88% |
Assets Pledged As Collateral [Member] | Foreign Securities [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | R$ 1,030 | 397
Assets Pledged As Collateral [Member] | Foreign Securities [Member] | Top of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Percentage of securities sold under repurchase agreements | 7.90% |
Assets Pledged As Collateral [Member] | Foreign Securities [Member] | Bottom of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Percentage of securities sold under repurchase agreements | 3.40% |
Assets Pledged As Collateral [Member] | Current [member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | R$ 168,870 | 159,712
Assets Pledged As Collateral [Member] | Current [member] | Government Securities – Other Countries [member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | 126,565 | 128,600
Assets Pledged As Collateral [Member] | Current [member] | Corporate Securities [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | 41,275 | 30,714
Assets Pledged As Collateral [Member] | Current [member] | Own Issue [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements |  | 1
Assets Pledged As Collateral [Member] | Current [member] | Foreign Securities [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | 1,030 | 397
Assets Pledged As Collateral [Member] | Non Current [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | 2 | 7
Assets Pledged As Collateral [Member] | Non Current [Member] | Own Issue [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | 2 | 7
Assets Received As Collateral [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | R$ 118,867 | 127,437
Assets Received As Collateral [Member] | Top of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Percentage of securities sold under repurchase agreements | 12.15% |
Assets Received As Collateral [Member] | Bottom of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Percentage of securities sold under repurchase agreements | 11.80% |
Assets Received As Collateral [Member] | Current [member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | R$ 118,867 | 127,437
Right To Sell Or Repledge Collateral [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | R$ 101,048 | 75,630
Right To Sell Or Repledge Collateral [Member] | Top of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Percentage of securities sold under repurchase agreements | 13.65% |
Right To Sell Or Repledge Collateral [Member] | Bottom of range [member] |  |
IfrsStatementLineItems [Line Items] |  |
Percentage of securities sold under repurchase agreements | 0.12% |
Right To Sell Or Repledge Collateral [Member] | Current [member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | R$ 57,896 | 44,256
Right To Sell Or Repledge Collateral [Member] | Non Current [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Securities sold under repurchase agreements | R$ 43,152 | R$ 31,374

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- Definition The amount of instruments sold with the intent to reacquire in repurchase agreements and cash collateral on securities lent. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
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