XML 217 R187.htm IDEA: XBRL DOCUMENT
v3.25.1

Segment Information (Details 1) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
IfrsStatementLineItems [Line Items] |  |  |
Non-current assets | R$ 33,190 | R$ 32,499 |
Income related to financial operations | 271,126 | 255,962 | R$ 203,770
Income from insurance contracts and private pension | 6,982 | 6,613 | 5,407
Commissions and Banking Fees | 47,071 | 45,731 | 44,566
Country Of Brazil [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Non-current assets | 27,940 | 27,855 |
Income related to financial operations | 219,281 | 221,534 | 173,746
Income from insurance contracts and private pension | 6,982 | 6,613 | 5,407
Commissions and Banking Fees | 41,888 | 41,147 | 40,062
Abroad [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Non-current assets | 5,250 | 4,644 |
Income related to financial operations | 51,845 | 34,428 | 30,024
Income from insurance contracts and private pension |  |  |
Commissions and Banking Fees | R$ 5,183 | R$ 4,584 | R$ 4,504

X
- Definition The amount of income relating to fees and commissions. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_85&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_FeeAndCommissionIncome
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of assets that do not meet the definition of current assets. [Refer: Current assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2024-01-01 -Paragraph B12 -Subparagraph b -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B12_b_ii&doctype=Appendix&subtype=B -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 12 -IssueDate 2024-01-01 -Paragraph B10 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B10_b&doctype=Appendix&subtype=B -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 66 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_66&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NoncurrentAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_IncomeFromFinancialOperations
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | itub_IncomeRelatedToInsurancePrivatePensionAndCapitalizationOperationsBeforeClaimAndSellingExpenses
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_SegmentsAxis=itub_CountryOfBrazilMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=itub_AbroadMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |