XML 175 R145.htm IDEA: XBRL DOCUMENT
v3.25.1

Share-based payment (Details Narrative) | 12 Months Ended
--- | ---
Dec. 31, 2024
Top of range [member] |
IfrsStatementLineItems [Line Items] |
Percentage of shares held by controlling and minority stockholders | 0.50%

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

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

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |