XML 169 R139.htm IDEA: XBRL DOCUMENT
v3.25.1

Stockholders' equity (Details 4) - BRL (R$) R$ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
IfrsStatementLineItems [Line Items] |  |
Capital reserves | R$ 2,732 | R$ 2,620
Total reserves at parent company | 124,160 | 107,085
Premium On Subscription Of Shares [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Capital reserves | 284 | 284
Reserve of share-based payments [member] |  |
IfrsStatementLineItems [Line Items] |  |
Capital reserves | 2,444 | 2,332
Revenue reserves | 121,428 | 104,465
Reserves From Tax Incentives Restatement Of Equity Securities And Other [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Capital reserves | 4 | 4
Legal [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Revenue reserves | 18,146 | 16,740
Statutory reserve [member] |  |
IfrsStatementLineItems [Line Items] |  |
Revenue reserves | 87,793 | 76,725
Special Revenue [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Revenue reserves | R$ 15,489 | R$ 11,000

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- Definition A component of equity representing the capital reserves. + 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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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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- Details
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- Details
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
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- Details
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Period Type: |