XML 196 R164.htm IDEA: XBRL DOCUMENT
v3.23.1

Insurance contracts and private pension (Details 3) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
IfrsStatementLineItems [Line Items] |  |
Opening balance | R$ 214,976 | R$ 221,000
Additions arising from premiums / contributions | 17,886 | 14,782
Deferral due to elapsed risk | (5,485) | (4,563)
Payment of claims / benefits | (1,971) | (1,971)
Reported claims | 1,477 | 1,534
Redemptions | (15,127) | (16,872)
Net Portability | 1,962 | (3,417)
Adjustment of reserves and financial surplus | 21,601 | 5,023
Other (increase / reversal) | (169) | (544)
Corporate Reorganization |  | 4
Closing balance | 235,150 | 214,976
Insurance [member] |  |
IfrsStatementLineItems [Line Items] |  |
Opening balance | 3,883 | 3,303
Additions arising from premiums / contributions | 6,254 | 5,106
Deferral due to elapsed risk | (5,485) | (4,563)
Payment of claims / benefits | (1,506) | (1,598)
Reported claims | 1,477 | 1,534
Adjustment of reserves and financial surplus | 10 | 14
Other (increase / reversal) | 50 | 83
Corporate Reorganization |  | 4
Closing balance | 4,683 | 3,883
Private Pension [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Opening balance | 211,093 | 217,697
Additions arising from premiums / contributions | 11,632 | 9,676
Payment of claims / benefits | (465) | (373)
Redemptions | (15,127) | (16,872)
Net Portability | 1,962 | (3,417)
Adjustment of reserves and financial surplus | 21,591 | 5,009
Other (increase / reversal) | (219) | (627)
Closing balance | 230,467 | 211,093
Insurance One [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Opening balance | R$ 3,883 |
Closing balance |  | R$ 3,883

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- Definition The increase in liabilities under insurance contracts and reinsurance contracts issued resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Liabilities under insurance contracts and reinsurance contracts issued] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2023-01-01 -Name IFRS -Number 4 -IssueDate 2022-03-24 -Paragraph 37 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2022-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2022-03-24 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Adjustment Of Reserves And Financial Surplus + References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Deferrals In Insurance Contracts Due To Elapsed Risk . + References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
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Period Type: | duration

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- Definition Disposals and redemptions. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Gross liabilities arising from insurance contracts. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Increase Decrease In Insurance Contract Liabilities Due To Corporate Reorganisation . + References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
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Period Type: | duration

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- Definition Increase decrease in portability of insurances. + References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Insurance claims reported by policyholders + References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Other liabilities under insurance contracts. + References No definition available. + Details
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Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Payment of claims and benefits out of insurance contracts. + References No definition available. + Details
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Namespace Prefix: | itub_
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |