XML 195 R165.htm IDEA: XBRL DOCUMENT v3.25.1

Post-employment benefits (Details 5) R$ in Millions	Dec. 31, 2024 BRL (R$)
Actuarial Assumption Of Interest Rates [Member] | Defined Benefit Plans And Variable Contribution Plans [Member] | Stockholders Equity [Member]
IfrsStatementLineItems [Line Items]
Increase in assumptions	R$ 242
Decrease in assumptions	(264)
Actuarial Assumption Of Interest Rates [Member] | Defined Benefit Plans And Variable Contribution Plans [Member] | Present value of defined benefit obligation [member]
IfrsStatementLineItems [Line Items]
Increase in assumptions	(654)
Decrease in assumptions	701
Actuarial Assumption Of Interest Rates [Member] | Other Post Employment Benefits [Member] | Stockholders Equity [Member]
IfrsStatementLineItems [Line Items]
Increase in assumptions	18
Decrease in assumptions	(20)
Actuarial Assumption Of Interest Rates [Member] | Other Post Employment Benefits [Member] | Present value of defined benefit obligation [member]
IfrsStatementLineItems [Line Items]
Increase in assumptions	(18)
Decrease in assumptions	20
Actuarial assumption of mortality rates [member] | Defined Benefit Plans And Variable Contribution Plans [Member] | Stockholders Equity [Member]
IfrsStatementLineItems [Line Items]
Increase in assumptions	77
Decrease in assumptions	(81)
Actuarial assumption of mortality rates [member] | Defined Benefit Plans And Variable Contribution Plans [Member] | Present value of defined benefit obligation [member]
IfrsStatementLineItems [Line Items]
Increase in assumptions	(203)
Decrease in assumptions	212
Actuarial assumption of mortality rates [member] | Other Post Employment Benefits [Member] | Stockholders Equity [Member]
IfrsStatementLineItems [Line Items]
Increase in assumptions	9
Decrease in assumptions	(10)
Actuarial assumption of mortality rates [member] | Other Post Employment Benefits [Member] | Present value of defined benefit obligation [member]
IfrsStatementLineItems [Line Items]
Increase in assumptions	(9)
Decrease in assumptions	10
Actuarial assumption of medical cost trend rates [member] | Other Post Employment Benefits [Member] | Stockholders Equity [Member]
IfrsStatementLineItems [Line Items]
Increase in assumptions	(44)
Decrease in assumptions	38
Actuarial assumption of medical cost trend rates [member] | Other Post Employment Benefits [Member] | Present value of defined benefit obligation [member]
IfrsStatementLineItems [Line Items]
Increase in assumptions	44
Decrease in assumptions	R$ (38)

X

- Definition

The increase (decrease) in a defined benefit obligation that would have been caused by a decrease in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [domain]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2024-01-01
-Paragraph 145
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_145_a&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The increase (decrease) in a defined benefit obligation that would have been caused by an increase in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [domain]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2024-01-01
-Paragraph 145
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_145_a&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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_ActuarialAssumptionsAxis=itub_ActuarialAssumptionOfInterestRatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_DefinedBenefitPlansAxis=itub_DefinedBenefitPlansAndVariableContributionPlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ComponentsOfEquityAxis=itub_StockholdersEquityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_NetDefinedBenefitLiabilityAssetAxis=ifrs-full_PresentValueOfDefinedBenefitObligationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_DefinedBenefitPlansAxis=itub_OtherPostEmploymentBenefitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ActuarialAssumptionsAxis=ifrs-full_ActuarialAssumptionOfMortalityRatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ActuarialAssumptionsAxis=ifrs-full_ActuarialAssumptionOfMedicalCostTrendRatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: