XML 163 R131.htm IDEA: XBRL DOCUMENT v3.23.1

Stockholders' equity (Details 1) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Preference shares [member]
IfrsStatementLineItems [Line Items]
Average cost	$ 21.76	$ 21.76
Market price per share	25.00	20.95
Ordinary shares [member]
IfrsStatementLineItems [Line Items]
Market price per share	$ 21.89	$ 19.09

X

- Definition

Average share price.

+ References

No definition available.

+ Details

Name:	itub_AverageSharePrice
Namespace Prefix:	itub_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	itub_IfrsStatementLineItems
Namespace Prefix:	itub_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Market value price per share.

+ References

No definition available.

+ Details

Name:	itub_MarketValuePricePerShare
Namespace Prefix:	itub_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	ifrs-full_ClassesOfShareCapitalAxis=ifrs-full_PreferenceSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfShareCapitalAxis=ifrs-full_OrdinarySharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: