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Insurance contracts and private pension (Details 6) - Administratives claims [member] - Net Reinsurance [Member] - BRL (R$) R$ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | --- | ---
IfrsStatementLineItems [Line Items] |  |  |  |  |
At the end of reporting period | R$ 1,413 | R$ 1,401 | R$ 1,231 | R$ 1,121 | R$ 954
Accumulated payments through base date | 1,316 | 1,476 | 1,236 | 1,126 | 998
Accumulated payments through base date to current date | 6,152 |  |  |  |
Liabilities recognized in the balance sheet | 97 | 15 | 9 | 9 | 9
Accumulated liabilities recognized in the balance sheet | 139 |  |  |  |
Liabilities in relation to prior periods | 55 |  |  |  |
Total administratives claims | 194 |  |  |  |
Not later than one year [member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
At the end of reporting period |  | 1,491 | 1,237 | 1,133 | 1,012
Later than one year and not later than two years [member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
At the end of reporting period |  |  | 1,245 | 1,133 | 1,015
Later than two years and not later than three years [member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
At the end of reporting period |  |  |  | 1,135 | 1,012
Later than four years and not later than five years [member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
At the end of reporting period |  |  |  |  | 1,007
Later than five years [member] |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |
At the end of reporting period | R$ 1,413 | R$ 1,491 | R$ 1,245 | R$ 1,135 | R$ 1,007

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- Definition Accumulated reinsurance liabilities recognized in balance sheet. + References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
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- Definition Gross re insurance accumulated paymentsfrom base dateto current date. + References No definition available. + Details
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- Definition Gross reinsurance accumulated payments through base date. + References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
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- Definition Gross reinsurance liabilities recognized in balance sheet. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- References No definition available. + Details
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- Definition Net Reinsurance Liabilities Relation To Prior Years + References No definition available. + Details
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- Definition Net Reinsurance Liability Claims Presented In The Development + References No definition available. + Details
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- Definition Net Reinsurance Reporting Period + References No definition available. + Details
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- Details
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Namespace Prefix: |
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Balance Type: |
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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