XML 123 R91.htm IDEA: XBRL DOCUMENT
v3.23.1

Derivatives (Details Narrative) - BRL (R$) R$ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Government Securities [member] |  |
IfrsStatementLineItems [Line Items] |  |
Total value of margins pledged in guarantee | R$ 12,155 | R$ 11,011

X
- Definition Derivatives pledges as collateral. + References No definition available. + Details
Name: | itub_DerivativesPledgesAsCollateral
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_ClassesOfFinancialAssetsAxis=itub_GovernmentSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |