XML 218 R188.htm IDEA: XBRL DOCUMENT
v3.25.1

Segment Information (Details Narrative) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Segment Information |  |
Interest margin and similar income and expenses | R$ 74,980 | R$ 64,135
Net gains (loss) on investment securities and derivatives | 32,011 | 29,145
Results from foreign exchange operation | 3,143 | 4,432
Depreciation and amortization expenses | 7,177 | R$ 6,529
Interest and similar income and expenses | 72,418 |
Net gains (loss) on investment securities and derivatives | 13,325 |
Results from foreign exchange operation | 1,280 |
Depreciation and amortization expenses | R$ 5,750 |
Maximum revenue percentage represented by clients | 10.00% |

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

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

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

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

X
- References No definition available. + Details
Name: | itub_DisclosureSegmentInformationAbstract
Namespace Prefix: | itub_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

X
- References No definition available. + Details
Name: | itub_MaximumRevenuePercentageRepresentedByClients
Namespace Prefix: | itub_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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

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