XML 213 R183.htm IDEA: XBRL DOCUMENT
v3.25.1

Fair value (Details Narrative) - BRL (R$) R$ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Notes and other explanatory information [abstract] |  |
Financial guarantee amount | R$ 196,845 | R$ 123,471
Estimated value of financial assets | R$ 111 | R$ 123

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

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

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