XML 202 R172.htm IDEA: XBRL DOCUMENT
v3.25.1

Insurance contracts and private pension (Details 5) - BRL (R$) R$ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Total [Member] |  |
IfrsStatementLineItems [Line Items] |  |
1 year | R$ 4,456 | R$ 3,680
2 years | 3,722 | 3,083
3 years | 3,303 | 2,908
4 years | 2,657 | 2,620
5 years | 2,050 | 2,101
Over 5 years | 10,684 | 10,759
Total | 26,872 | 25,151
Private Pension [Member] |  |
IfrsStatementLineItems [Line Items] |  |
1 year | 2,068 | 1,736
2 years | 2,084 | 1,861
3 years | 2,115 | 1,897
4 years | 2,077 | 1,903
5 years | 1,935 | 1,806
Over 5 years | 10,665 | 10,733
Total | 20,944 | 19,936
Insurance [Member] |  |
IfrsStatementLineItems [Line Items] |  |
1 year | 2,388 | 1,944
2 years | 1,638 | 1,222
3 years | 1,188 | 1,011
4 years | 580 | 717
5 years | 115 | 295
Over 5 years | 19 | 26
Total | R$ 5,928 | R$ 5,215

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- Definition The amount of the contractual service margin. [Refer: Contractual service margin [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 17 -IssueDate 2024-01-01 -Paragraph 109 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2024-en-r&anchor=para_109&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_ContractualServiceMargin
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | itub_ContractualServiceMargin1Year
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | itub_ContractualServiceMargin2Year
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | itub_ContractualServiceMargin3Year
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | itub_ContractualServiceMargin4Year
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | itub_ContractualServiceMargin5Year
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | itub_ContractualServiceMarginOver5Year
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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- Details
Name: | ifrs-full_AssetsAndLiabilitiesAxis=itub_TotalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_CharacteristicsOfDefinedBenefitPlansAxis=itub_PrivatePensionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_InsuranceContractsAxis=itub_InsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |