XML 194 R142.htm IDEA: XBRL DOCUMENT
v3.19.1

Other assets and liabilities - Summary of Other Assets (Detail) - BRL (R$) R$ in Millions | Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2017
--- | --- | --- | ---
Disclosure of Financial Assets [Line Items] |  |  |
Other non-financial assets, Current | R$ 7,969 | R$ 9,373 |
Other non-financial assets, Non-current | 1,313 | 1,820 |
Other non-financial assets, Total | 9,282 | 11,193 |
Other financial assets, Current | 62,390 | 46,718 |
Other financial assets, Non-current | 12,700 | 12,850 |
Other financial assets, Total | 75,090 | 59,568 | R$ 53,895
Receivables from credit card issuers [Member] |  |  |
Disclosure of Financial Assets [Line Items] |  |  |
Other financial assets, Current | 36,491 | 32,073 |
Other financial assets, Total | 36,491 | 32,073 |
Deposits in guarantee for contingent, provisions and legal obligations [member] |  |  |
Disclosure of Financial Assets [Line Items] |  |  |
Other financial assets, Current | 1,455 | 1,520 |
Other financial assets, Non-current | 12,079 | 11,892 |
Other financial assets, Total | 13,534 | 13,412 |
Negotiation and intermediation of securities [Member] |  |  |
Disclosure of Financial Assets [Line Items] |  |  |
Other financial assets, Current | 15,400 | 6,202 |
Other financial assets, Non-current | 255 | 18 |
Other financial assets, Total | 15,655 | 6,220 |
Income receivable [member] |  |  |
Disclosure of Financial Assets [Line Items] |  |  |
Other financial assets, Current | 3,155 | 2,843 |
Other financial assets, Non-current | 5 | 106 |
Other financial assets, Total | 3,160 | 2,949 |
Credit of operations without credit granting characteristics net amount [member] |  |  |
Disclosure of Financial Assets [Line Items] |  |  |
Other financial assets, Current | 3,021 | 1,973 |
Other financial assets, Non-current | 4 | 3 |
Other financial assets, Total | 3,025 | 1,976 |
Insurance and reinsurance operations [Member] |  |  |
Disclosure of Financial Assets [Line Items] |  |  |
Other financial assets, Current | 899 | 1,224 |
Other financial assets, Non-current | 356 | 10 |
Other financial assets, Total | 1,255 | 1,234 |
Net amount receivables from reimbursement of provisions [member] |  |  |
Disclosure of Financial Assets [Line Items] |  |  |
Other financial assets, Current | 999 | 244 |
Other financial assets, Non-current |  | 821 |
Other financial assets, Total | 999 | 1,065 |
Deposits in guarantee for foreign borrowing program [Member] |  |  |
Disclosure of Financial Assets [Line Items] |  |  |
Other financial assets, Current | 970 | 639 |
Other financial assets, Non-current | 1 |  |
Other financial assets, Total | 971 | 639 |
Sundry Foreign [Member] |  |  |
Disclosure of Financial Assets [Line Items] |  |  |
Other non-financial assets, Current | 995 | 1,847 |
Other non-financial assets, Non-current | 9 | 29 |
Other non-financial assets, Total | 1,004 | 1,876 |
Prepaid expenses [Member] |  |  |
Disclosure of Financial Assets [Line Items] |  |  |
Other non-financial assets, Current | 2,642 | 2,432 |
Other non-financial assets, Non-current | 546 | 643 |
Other non-financial assets, Total | 3,188 | 3,075 |
Sundry domestic [Member] |  |  |
Disclosure of Financial Assets [Line Items] |  |  |
Other non-financial assets, Current | 1,579 | 2,882 |
Other non-financial assets, Non-current | 27 | 77 |
Other non-financial assets, Total | 1,606 | 2,959 |
Plan assets postemployment benefits [member] |  |  |
Disclosure of Financial Assets [Line Items] |  |  |
Other non-financial assets, Non-current | 731 | 1,067 |
Other non-financial assets, Total | 731 | 1,067 |
Other non financial assets [Member] |  |  |
Disclosure of Financial Assets [Line Items] |  |  |
Other non-financial assets, Current | 2,753 | 2,212 |
Other non-financial assets, Non-current |  | 4 |
Other non-financial assets, Total | R$ 2,753 | R$ 2,216 |

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

X
- Definition The amount of current financial assets that the entity does not separately disclose in the same statement or note. [Refer: Other financial assets; Current financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_d&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_OtherCurrentFinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of current non-financial assets that the entity does not separately disclose in the same statement or note. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_OtherCurrentNonfinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of financial assets that the entity does not separately disclose in the same statement or note. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_d&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_OtherFinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of non-current financial assets that the entity does not separately disclose in the same statement or note. [Refer: Other financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_d&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_OtherNoncurrentFinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of non-current non-financial assets that the entity does not separately disclose in the same statement or note. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_OtherNoncurrentNonfinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of non-financial assets that the entity does not separately disclose in the same statement or note. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_OtherNonfinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=itub_ReceivablesFromCreditCardIssuersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=itub_DepositsInGuaranteeForContingentLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=itub_NegotiationAndIntermediationOfSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=itub_IncomeReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=itub_CreditOfOperationsWithoutCreditGrantingCharacteristicsNetAmountMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=itub_InsuranceAndReinsuranceOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=itub_NetAmountReceivableFromReimbursementOfProvisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=itub_DepositsInGuaranteeForForeignBorrowingProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=itub_SundryForeignMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=itub_PrepaidExpensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=itub_SundryDomesticMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=itub_PlanAssetsPostemploymentBenefitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=itub_OtherNonFinancialAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |