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v3.25.1

Derivatives (Details Narrative) - BRL (R$) R$ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Government Securities – Other Countries [member] |  |
IfrsStatementLineItems [Line Items] |  |
Total value of margins pledged in guarantee | R$ 24,254 | R$ 24,812

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Namespace Prefix: | itub_
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Balance Type: | debit
Period Type: | instant

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

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- Details
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