XML 233 R203.htm IDEA: XBRL DOCUMENT v3.25.1

Risk and Capital Management (Details 11) - BRL (R$) R$ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
IfrsStatementLineItems [Line Items]
Deposits	R$ 1,054,741	R$ 951,352
Percentage of funding from clients	100.00%	100.00%
Funds from acceptances and issuance of securities	R$ (175)	R$ (82)
Subordinated debt	45,224	46,677
Total	1,567,584	1,399,596
Demand Deposit [Member]
IfrsStatementLineItems [Line Items]
Deposits	R$ 124,920	R$ 105,634
Percentage of funding from clients	8.00%	7.60%
Saving Deposits [Member]
IfrsStatementLineItems [Line Items]
Deposits	R$ 180,730	R$ 174,765
Percentage of funding from clients	11.50%	12.50%
Time Deposits [Member]
IfrsStatementLineItems [Line Items]
Deposits	R$ 735,376	R$ 656,591
Percentage of funding from clients	46.90%	46.90%
Other Deposit [Member]
IfrsStatementLineItems [Line Items]
Deposits	R$ 13,715	R$ 14,362
Percentage of funding from clients	0.90%	1.00%
Security Deposits [Member]
IfrsStatementLineItems [Line Items]
Percentage of funding from clients	23.70%	23.50%
Funds from acceptances and issuance of securities	R$ 372,294	R$ 328,645
Own Issue [Member]
IfrsStatementLineItems [Line Items]
Funds from own issue	R$ 2	R$ 8
Subordinateds Debt [Member]
IfrsStatementLineItems [Line Items]
Percentage of funding from clients	9.00%	8.50%
Subordinated debt	R$ 140,547	R$ 119,591
Not later than one month [member]
IfrsStatementLineItems [Line Items]
Deposits	894,482	817,050
Total	1,089,345	1,019,042
Not later than one month [member] | Demand Deposit [Member]
IfrsStatementLineItems [Line Items]
Deposits	124,920	105,634
Not later than one month [member] | Saving Deposits [Member]
IfrsStatementLineItems [Line Items]
Deposits	180,730	174,765
Not later than one month [member] | Time Deposits [Member]
IfrsStatementLineItems [Line Items]
Deposits	580,855	527,841
Not later than one month [member] | Other Deposit [Member]
IfrsStatementLineItems [Line Items]
Deposits	7,977	8,810
Not later than one month [member] | Security Deposits [Member]
IfrsStatementLineItems [Line Items]
Funds from acceptances and issuance of securities	189,700	200,886
Subordinated debt	R$ 5,163	R$ 1,106

X

- Definition

The amount of deposit liabilities from customers held by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

+ Details

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

X

- Definition

The amount of liabilities that are subordinate to other liabilities with respect to claims.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

+ Details

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

X

- References

No definition available.

+ Details

Name:	itub_FundingFromCustomers
Namespace Prefix:	itub_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	itub_FundsFromAcceptancesAndIssuanceOfSecurities
Namespace Prefix:	itub_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	itub_FundsFromOwnIssue
Namespace Prefix:	itub_
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

- References

No definition available.

+ Details

Name:	itub_PercentageOfAggregateFundsFromCustomers
Namespace Prefix:	itub_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_CategoriesOfFinancialLiabilitiesAxis=itub_DemandDepositMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfFinancialLiabilitiesAxis=itub_SavingDepositsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfFinancialLiabilitiesAxis=itub_TimeDepositsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfFinancialLiabilitiesAxis=itub_OtherDepositMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfFinancialLiabilitiesAxis=itub_SecurityDepositsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfFinancialLiabilitiesAxis=itub_OwnIssueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfFinancialLiabilitiesAxis=itub_SubordinatedsDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_NotLaterThanOneMonthMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: