XML 173 R141.htm IDEA: XBRL DOCUMENT
v3.23.1

Interest and similar income and expenses and income of financial assets and liabilities at fair value through profit or loss (Details) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
IfrsStatementLineItems [Line Items] |  |  |
Interest and similar income | R$ 190,273 | R$ 129,253 | R$ 114,369
Compulsory Deposits In The Central Bank Of Brazil [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Interest and similar income | 10,228 | 3,613 | 2,242
Interbank Deposits [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Interest and similar income | 3,145 | 1,203 | 1,102
Securities purchased under agreements to resell [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Interest and similar income | 25,467 | 9,812 | 9,832
Financial assets at fair value through other comprehensive income, category [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Interest and similar income | 21,313 | 17,193 | 18,089
Financial assets at amortised cost, category [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Interest and similar income | 12,164 | 4,820 | 3,629
Loans Operations [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Interest and similar income | 116,844 | 92,789 | 79,503
Other financial asset [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Interest and similar income | R$ 1,112 | R$ (177) | R$ (28)

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

X
- Definition Interest and similar income. + References No definition available. + Details
Name: | itub_InterestAndSimilarIncome
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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

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

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

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

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

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