XML 112 R82.htm IDEA: XBRL DOCUMENT
v3.25.1

Financial assets at fair value through profit or loss and designated at fair value through profit or loss - Securities (Details 2) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
IfrsStatementLineItems [Line Items] |  |
At Fair Value through Profit or Loss | R$ 654,194 | R$ 568,354
Financial Assets At Carrying Value [Member] |  |
IfrsStatementLineItems [Line Items] |  |
At Fair Value through Profit or Loss | 313 |
Non-current | 313 |
Financial Assets At Carrying Value [Member] | Later than one year and not later than five years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-current | 12 |
Financial Assets At Carrying Value [Member] | Later than five years and not later than ten years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-current | 249 |
Financial Assets At Carrying Value [Member] | Later than ten years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-current | 52 |
Financial assets at fair value, class [member] |  |
IfrsStatementLineItems [Line Items] |  |
At Fair Value through Profit or Loss | 318 |
Non-current | 318 |
Financial assets at fair value, class [member] | Later than one year and not later than five years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-current | 12 |
Financial assets at fair value, class [member] | Later than five years and not later than ten years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-current | 249 |
Financial assets at fair value, class [member] | Later than ten years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-current | 57 |
Financial assets at fair value through profit or loss, designated upon initial recognition or subsequently, category [member] |  |
IfrsStatementLineItems [Line Items] |  |
Cost | 313 |
Accumulated gain / (loss) reflected in income | 5 |
At Fair Value through Profit or Loss | 318 |
Financial assets at fair value through profit or loss, designated upon initial recognition or subsequently, category [member] | Brazilian Government Securities [member] |  |
IfrsStatementLineItems [Line Items] |  |
Cost | 38 |
Accumulated gain / (loss) reflected in income | 5 |
At Fair Value through Profit or Loss | 43 |
Financial assets at fair value through profit or loss, designated upon initial recognition or subsequently, category [member] | Government securities - Latin America [member] |  |
IfrsStatementLineItems [Line Items] |  |
Cost | 275 |
Accumulated gain / (loss) reflected in income |  |
At Fair Value through Profit or Loss | R$ 275 |

X
- Definition The gains (losses) on financial assets at fair value through profit or loss. [Refer: Financial assets at fair value through profit or loss] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 20 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20_a_i&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of non-current financial assets measured at fair value through profit or loss. [Refer: Financial assets at fair value through profit or loss] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 8 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_8_a&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NoncurrentFinancialAssetsAtFairValueThroughProfitOrLoss
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=itub_FinancialAssetsAtCarryingValueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanOneYearAndNotLaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanFiveYearsAndNotLaterThanTenYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanTenYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=ifrs-full_FinancialAssetsAtFairValueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfFinancialAssetsAxis=ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionCategoryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=itub_BrazilianGovernmentSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=itub_GovernmentSecuritiesLatinAmericaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |