XML 203 R173.htm IDEA: XBRL DOCUMENT
v3.25.1

Insurance contracts and private pension (Details 6) | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
One Year [Member] |  |
IfrsStatementLineItems [Line Items] |  |
IGPM | 7.43% | 5.56%
IPCA | 7.63% | 5.87%
TR | 13.07% | 9.35%
Three Year [Member] |  |
IfrsStatementLineItems [Line Items] |  |
IGPM | 5.69% | 4.91%
IPCA | 8.05% | 5.09%
TR | 13.48% | 9.10%
Five Year [Member] |  |
IfrsStatementLineItems [Line Items] |  |
IGPM | 6.29% | 5.25%
IPCA | 7.79% | 5.09%
TR | 13.24% | 9.32%
Ten Year [Member] |  |
IfrsStatementLineItems [Line Items] |  |
IGPM | 6.18% | 5.59%
IPCA | 7.59% | 5.20%
TR | 12.78% | 9.48%
Twenty Year [Member] |  |
IfrsStatementLineItems [Line Items] |  |
IGPM | 5.88% | 5.65%
IPCA | 7.36% | 5.31%
TR | 12.58% | 9.45%

X
- References No definition available. + Details
Name: | itub_DiscountRatesIGPM
Namespace Prefix: | itub_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | itub_DiscountRatesIPCA
Namespace Prefix: | itub_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | itub_DiscountRatesTR
Namespace Prefix: | itub_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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_YearsOfInsuranceClaimAxis=itub_OneYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_YearsOfInsuranceClaimAxis=itub_ThreeYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_YearsOfInsuranceClaimAxis=itub_FiveYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_YearsOfInsuranceClaimAxis=itub_TenYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_YearsOfInsuranceClaimAxis=itub_TwentyYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |