XML 184 R147.htm IDEA: XBRL DOCUMENT
v3.22.1

Stockholders' equity - Summary of Change in Shares of Paid-in Capital and Reconciliation of Balances (Detail) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure of classes of share capital [line items] |  |  |
Shares of capital stock, beginning balance | 9,804,135,348 | 9,804,135,348 |
Shares of capital stock, ending balance | 9,804,135,348 | 9,804,135,348 | 9,804,135,348
Treasury shares, beginning balance | 41,678,452 | 58,533,585 |
Result of delivery of treasury shares | (17,433,727) | (16,855,133) |
Treasury shares, ending balance | 24,244,725 | 41,678,452 | 58,533,585
Outstanding shares | 9,779,890,623 | 9,762,456,896 | 9,745,601,763
Beginning balance | R$ 97,148 | R$ 97,148 |
Ending balance | 90,729 | 97,148 | R$ 97,148
Treasury shares, value | (907) | (1,274) |
Result of delivery of treasury shares | 572 | 567 | 897
Treasury shares, value | R$ (528) | R$ (907) | R$ (1,274)
Ordinary shares [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Shares of capital stock, beginning balance | 4,958,290,359 | 4,958,290,359 |
Shares of capital stock, ending balance | 4,958,290,359 | 4,958,290,359 | 4,958,290,359
Outstanding shares | 4,958,290,359 | 4,958,290,359 | 4,958,290,359
Preference shares [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Shares of capital stock, beginning balance | 4,845,844,989 | 4,845,844,989 |
Shares of capital stock, ending balance | 4,845,844,989 | 4,845,844,989 | 4,845,844,989
Result of delivery of treasury shares | (17,433,727) | (16,855,133) |
Outstanding shares | 4,821,600,264 | 4,804,166,537 | 4,787,311,404
Treasury shares [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Result of delivery of treasury shares | R$ 379 | R$ 367 | R$ 546
Brazil [Member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Shares of capital stock, beginning balance | 6,749,983,938 | 6,596,680,748 |
Shares of capital stock, ending balance | 6,701,805,828 | 6,749,983,938 | 6,596,680,748
Beginning balance | R$ 66,885 | R$ 65,366 |
Ending balance | R$ 62,020 | R$ 66,885 | R$ 65,366
Brazil [Member] | Ordinary shares [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Shares of capital stock, beginning balance | 4,929,824,281 | 4,931,023,416 |
Shares of capital stock, ending balance | 4,929,997,183 | 4,929,824,281 | 4,931,023,416
Brazil [Member] | Preference shares [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Shares of capital stock, beginning balance | 1,820,159,657 | 1,665,657,332 |
Shares of capital stock, ending balance | 1,771,808,645 | 1,820,159,657 | 1,665,657,332
Foreign [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Shares of capital stock, beginning balance | 3,054,151,410 | 3,207,454,600 |
Shares of capital stock, ending balance | 3,102,329,520 | 3,054,151,410 | 3,207,454,600
Beginning balance | R$ 30,263 | R$ 31,782 |
Ending balance | R$ 28,709 | R$ 30,263 | R$ 31,782
Foreign [member] | Ordinary shares [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Shares of capital stock, beginning balance | 28,466,078 | 27,266,943 |
Shares of capital stock, ending balance | 28,293,176 | 28,466,078 | 27,266,943
Foreign [member] | Preference shares [member] |  |  |
Disclosure of classes of share capital [line items] |  |  |
Shares of capital stock, beginning balance | 3,025,685,332 | 3,180,187,657 |
Shares of capital stock, ending balance | 3,074,036,344 | 3,025,685,332 | 3,180,187,657

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfClassesOfShareCapitalLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The nominal value of capital issued. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 78 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_e&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_IssuedCapital
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The number of shares issued by the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 106 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_106_d&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_NumberOfSharesIssued
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 79 -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_79_a_iv&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_NumberOfSharesOutstanding
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The increase in equity resulting from the sale or issue of treasury shares. [Refer: Treasury shares] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 106 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_106_d&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_SaleOrIssueOfTreasuryShares
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition An entity’s own equity instruments, held by the entity or other members of the consolidated group. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 78 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_e&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 32 -IssueDate 2021-01-01 -Paragraph 34 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=32&code=ifrs-tx-2021-en-r&anchor=para_34&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_TreasuryShares
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of treasury shares. + References No definition available. + Details
Name: | itub_NumberOfTreasuryShares
Namespace Prefix: | itub_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Sale or issue of treasury shares, shares. + References No definition available. + Details
Name: | itub_SaleOrIssueOfTreasurySharesShares
Namespace Prefix: | itub_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=ifrs-full_OrdinarySharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=ifrs-full_PreferenceSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=ifrs-full_TreasurySharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=country_BR
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=ifrs-full_ForeignCountriesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |