XML 221 R189.htm IDEA: XBRL DOCUMENT
v3.23.1

Risk and Capital Management (Details 6) - BRL (R$) | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | R$ 1,085,045 | R$ 932,840
At fair value [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 723,428,000,000 | 616,387,000,000
At fair value [member] | Stage One [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 715,215,000,000 | 595,456,000,000
At fair value [member] | Stage Two [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 7,771,000,000 | 18,014,000,000
At fair value [member] | Stage three [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 442,000,000 | 2,917,000,000
At cost [member] | Stage One [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 727,141,000,000 | 601,354,000,000
At cost [member] | Stage Two [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 8,818,000,000 | 18,615,000,000
At cost [member] | Stage three [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 2,389,000,000 | 4,993,000,000
Investment funds [member] | At fair value [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 32,491,000,000 | 20,139,000,000
Investment funds [member] | At fair value [member] | Stage One [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 27,140,000,000 | 4,914,000,000
Investment funds [member] | At fair value [member] | Stage Two [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 5,259,000,000 | 15,225,000,000
Investment funds [member] | At fair value [member] | Stage three [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 92,000,000 |
Investment funds [member] | At cost [member] | Stage One [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 27,660,000,000 | 4,906,000,000
Investment funds [member] | At cost [member] | Stage Two [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 5,259,000,000 | 15,224,000,000
Investment funds [member] | At cost [member] | Stage three [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 92,000,000 |
Brazilian government securities [member] | At fair value [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 479,834,000,000 | 423,085,000,000
Brazilian government securities [member] | At fair value [member] | Stage One [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 479,834,000,000 | 423,085,000,000
Brazilian government securities [member] | At cost [member] | Stage One [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 483,476,000,000 | 426,959,000,000
Brazilian external debt bonds [Member] | At fair value [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 394,675,000,000 | 362,449,000,000
Brazilian external debt bonds [Member] | At fair value [member] | Stage One [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 394,675,000,000 | 362,449,000,000
Brazilian external debt bonds [Member] | At cost [member] | Stage One [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 397,793,000,000 | 365,947,000,000
Other Public [Member] | At cost [member] | Stage One [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 36,000,000 | 36,000,000
Government Securities [member] | At fair value [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 85,159,000,000 | 60,636,000,000
Government Securities [member] | At fair value [member] | Argentina [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 3,453,000,000 | 1,335,000,000
Government Securities [member] | At fair value [member] | United States [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 9,665,000,000 | 7,189,000,000
Government Securities [member] | At fair value [member] | Israel [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 860,000,000 |
Government Securities [member] | At fair value [member] | Mexico [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 14,010,000,000 | 12,413,000,000
Government Securities [member] | At fair value [member] | Korea [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 10,363,000,000 | 5,604,000,000
Government Securities [member] | At fair value [member] | Chile [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 24,681,000,000 | 21,399,000,000
Government Securities [member] | At fair value [member] | Paraguay [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 3,463,000,000 | 1,469,000,000
Government Securities [member] | At fair value [member] | Uruguay [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 1,182,000,000 | 1,258,000,000
Government Securities [member] | At fair value [member] | Colombia [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 3,151,000,000 | 3,830,000,000
Government Securities [member] | At fair value [member] | Peru [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 6,000,000 | 8,000,000
Government Securities [member] | At fair value [member] | Switzerland [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 4,403,000,000 |
Government Securities [member] | At fair value [member] | Stage One [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 85,159,000,000 | 60,636,000,000
Government Securities [member] | At fair value [member] | Stage One [member] | Spain [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 9,922,000,000 | 6,131,000,000
Government Securities [member] | At fair value [member] | Stage One [member] | Korea [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 10,363,000,000 | 5,604,000,000
Government Securities [member] | At fair value [member] | Stage One [member] | Paraguay [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 3,463,000,000 | 1,469,000,000
Government Securities [member] | At fair value [member] | Stage One [member] | Colombia [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 3,151,000,000 | 3,830,000,000
Government Securities [member] | At fair value [member] | Stage One [member] | Peru [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 6,000,000 | 8,000,000
Government Securities [member] | At fair value [member] | Stage One [member] | Switzerland [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 4,403,000,000 |
Government Securities [member] | At cost [member] | Stage One [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 85,647,000,000 | 60,976,000,000
Government Securities [member] | At cost [member] | Stage One [member] | Argentina [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 3,460,000,000 | 1,310,000,000
Government Securities [member] | At cost [member] | Stage One [member] | United States [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 9,716,000,000 | 7,226,000,000
Government Securities [member] | At cost [member] | Stage One [member] | Israel [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 852,000,000 |
Government Securities [member] | At cost [member] | Stage One [member] | Mexico [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 14,021,000,000 | 12,424,000,000
Government Securities [member] | At cost [member] | Stage One [member] | Spain [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 9,924,000,000 | 6,132,000,000
Government Securities [member] | At cost [member] | Stage One [member] | Korea [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 10,365,000,000 | 5,604,000,000
Government Securities [member] | At cost [member] | Stage One [member] | Chile [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 24,811,000,000 | 21,552,000,000
Government Securities [member] | At cost [member] | Stage One [member] | Paraguay [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 3,461,000,000 | 1,526,000,000
Government Securities [member] | At cost [member] | Stage One [member] | Uruguay [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 1,185,000,000 | 1,256,000,000
Government Securities [member] | At cost [member] | Stage One [member] | Colombia [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 3,430,000,000 | 3,938,000,000
Government Securities [member] | At cost [member] | Stage One [member] | Peru [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 7,000,000 | 8,000,000
Government Securities [member] | At cost [member] | Stage One [member] | Switzerland [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 4,415,000,000 |
Corporates Debt Securities [Member] | At fair value [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 211,103,000,000 | 173,163,000,000
Corporates Debt Securities [Member] | At fair value [member] | Rural Product Note [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 28,896,000,000 | 12,744,000,000
Corporates Debt Securities [Member] | At fair value [member] | Real Estate Receivables Certificates [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 7,214,000,000 | 4,999,000,000
Corporates Debt Securities [Member] | At fair value [member] | Bank Deposit Certificates [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 1,172,000,000 | 390,000,000
Corporates Debt Securities [Member] | At fair value [member] | Debentures [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 110,075,000,000 | 103,659,000,000
Corporates Debt Securities [Member] | At fair value [member] | Eurobonds And Other [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 8,770,000,000 | 10,206,000,000
Corporates Debt Securities [Member] | At fair value [member] | Financial bills [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 19,504,000,000 | 10,168,000,000
Corporates Debt Securities [Member] | At fair value [member] | Promissory And Commercial Notes [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 11,250,000,000 | 8,901,000,000
Corporates Debt Securities [Member] | At fair value [member] | Other [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 24,222,000,000 | 22,096,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage One [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 208,241,000,000 | 167,457,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage One [member] | Rural Product Note [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 28,618,000,000 | 12,597,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage One [member] | Real Estate Receivables Certificates [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 7,214,000,000 | 4,999,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage One [member] | Bank Deposit Certificates [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 1,172,000,000 | 390,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage One [member] | Debentures [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 108,140,000,000 | 98,867,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage One [member] | Eurobonds And Other [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 8,770,000,000 | 10,194,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage One [member] | Financial bills [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 19,504,000,000 | 10,168,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage One [member] | Promissory And Commercial Notes [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 11,250,000,000 | 8,901,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage One [member] | Other [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 23,573,000,000 | 21,341,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage Two [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 2,512,000,000 | 2,789,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage Two [Member] | Rural Product Note [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 262,000,000 | 121,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage Two [Member] | Debentures [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 1,610,000,000 | 1,923,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage Two [Member] | Eurobonds And Other [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets |  | 12,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage Two [Member] | Other [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 640,000,000 | 733,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage three [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 350,000,000 | 2,917,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage three [Member] | Rural Product Note [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 16,000,000 | 26,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage three [Member] | Debentures [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 325,000,000 | 2,869,000,000
Corporates Debt Securities [Member] | At fair value [member] | Stage three [Member] | Other [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 9,000,000 | 22,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage One [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 216,005,000,000 | 169,489,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage One [member] | Rural Product Note [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 28,670,000,000 | 12,474,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage One [member] | Real Estate Receivables Certificates [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 7,318,000,000 | 5,063,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage One [member] | Bank Deposit Certificates [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 1,172,000,000 | 392,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage One [member] | Debentures [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 110,732,000,000 | 99,438,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage One [member] | Eurobonds And Other [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 9,035,000,000 | 10,236,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage One [member] | Financial bills [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 19,535,000,000 | 10,185,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage One [member] | Promissory And Commercial Notes [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 11,251,000,000 | 8,874,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage One [member] | Other [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 28,292,000,000 | 22,827,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage Two [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 3,559,000,000 | 3,391,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage Two [Member] | Rural Product Note [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 287,000,000 | 146,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage Two [Member] | Debentures [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 2,470,000,000 | 2,383,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage Two [Member] | Eurobonds And Other [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets |  | 12,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage Two [Member] | Other [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 802,000,000 | 850,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage three [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 2,297,000,000 | 4,993,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage three [Member] | Rural Product Note [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 29,000,000 | 38,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage three [Member] | Debentures [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | 2,037,000,000 | 4,704,000,000
Corporates Debt Securities [Member] | At cost [member] | Stage three [Member] | Other [member] |  |
IfrsStatementLineItems [Line Items] |  |
Maximum exposure of other financial assets | R$ 231,000,000 | R$ 251,000,000

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

X
- Definition Maximum exposure of other financial assets. + References No definition available. + Details
Name: | itub_MaximumExposureOfOtherFinancialAssets
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_MeasurementAxis=ifrs-full_AtFairValueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

X
- Details
Name: | ifrs-full_MeasurementAxis=ifrs-full_AtCostMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=itub_ArgentinaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=itub_UnitedStatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=itub_IsraelMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=itub_MexicoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=itub_KoreaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=itub_ChileMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=itub_ParaguayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=itub_UruguayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=itub_ColombiaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=itub_PeruMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=itub_SwitzerlandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=itub_SpainMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=itub_RuralProductNoteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=itub_RealEstateReceivablesCertificatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=itub_BankDepositCertificatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=itub_DebenturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=itub_EurobondsAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=itub_FinancialBillsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=itub_PromissoryAndCommercialNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=itub_OtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |