XML 172 R140.htm IDEA: XBRL DOCUMENT
v3.23.1

Share-based payment (Details Narrative) | 12 Months Ended
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Dec. 31, 2022
IfrsStatementLineItems [Line Items] |
Period of variable compensation paid in shares | three years
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
- Definition Percentage of shares held. + References No definition available. + Details
Name: | itub_PercentageOfSharesHeld
Namespace Prefix: | itub_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period of variable compensation paid in shares. + References No definition available. + Details
Name: | itub_PeriodOfVariableCompensationPaidInShares
Namespace Prefix: | itub_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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