XML 114 R179.htm IDEA: XBRL DOCUMENT
v3.20.1

Insurance Contracts and Private Pension - Summary of Changes in Technical Provisions (Detail) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Disclosure of other provisions [line items] |  |
Unearned premiums (PPNG) | R$ 2,356 | R$ 2,124
Mathematical reserve for benefits to be granted (PMBAC) and benefits granted (PMBC) | 212,477 | 195,543
Redemptions and Other Unsettled Amounts (PVR) | 331 | 310
Financial surplus (PEF) | 613 | 607
Unsettled claims (PSL) | 618 | 591
Claims / events incurred but not reported (IBNR) | 299 | 373
Related Expenses (PDR) | 117 | 129
Other | 1,523 | 1,510
Total | 218,334 | 201,187
Opening balance | 201,187 | 181,232
Additions arising from premiums / contribution | 19,642 | 24,104
Risk adjustments | (4,489) | (4,234)
Payment of claims / benefits | (1,915) | (1,764)
Reported claims | 1,465 | 1,325
Redemptions | (15,623) | (13,772)
Portability of insurances | 1,754 | 3,758
Adjustment of reserves and financial surplus | 16,517 | 11,631
Other (recognition / reversal) | (204) | (1,093)
Closing balance | 218,334 | 201,187
Insurance [member] |  |
Disclosure of other provisions [line items] |  |
Unearned premiums (PPNG) | 2,343 | 2,111
Mathematical reserve for benefits to be granted (PMBAC) and benefits granted (PMBC) | 205 | 195
Redemptions and Other Unsettled Amounts (PVR) | 13 | 12
Financial surplus (PEF) | 2 | 2
Unsettled claims (PSL) | 570 | 642
Claims / events incurred but not reported (IBNR) | 277 | 254
Related Expenses (PDR) | 28 | 31
Other | 250 | 562
Total | 3,688 | 3,809
Opening balance | 3,809 | 3,464
Additions arising from premiums / contribution | 4,634 | 4,340
Risk adjustments | (4,216) | (3,937)
Payment of claims / benefits | (1,349) | (1,184)
Reported claims | 1,465 | 1,325
Redemptions |  | (1)
Adjustment of reserves and financial surplus | 10 | 9
Other (recognition / reversal) | (665) | (207)
Closing balance | 3,688 | 3,809
Private Pension [Member] |  |
Disclosure of other provisions [line items] |  |
Unearned premiums (PPNG) | 13 | 13
Mathematical reserve for benefits to be granted (PMBAC) and benefits granted (PMBC) | 212,272 | 195,348
Redemptions and Other Unsettled Amounts (PVR) | 318 | 298
Financial surplus (PEF) | 611 | 605
Unsettled claims (PSL) | 48 | 43
Claims / events incurred but not reported (IBNR) | 22 | 25
Related Expenses (PDR) | 89 | 98
Other | 1,273 | 948
Total | 214,646 | 197,378
Opening balance | 197,378 | 177,768
Additions arising from premiums / contribution | 15,008 | 19,764
Risk adjustments | (273) | (297)
Payment of claims / benefits | (566) | (580)
Redemptions | (15,623) | (13,771)
Portability of insurances | 1,754 | 3,758
Adjustment of reserves and financial surplus | 16,507 | 11,622
Other (recognition / reversal) | 461 | (886)
Closing balance | R$ 214,646 | R$ 197,378

X
- 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 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2019-03-27 + Details
Name: | ifrs-full_AcquisitionsThroughBusinessCombinationsLiabilitiesUnderInsuranceContractsAndReinsuranceContractsIssued
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of liability for insured events that have occurred but for which claims have yet not been reported by policyholders. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph IG22 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_IG22_c&doctype=Implementation%20Guidance&book=b -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph 37 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_37_b&doctype=Standard&book=b -URIDate 2019-03-27 + Details
Name: | ifrs-full_ClaimsIncurredButNotReported
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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_DisclosureOfOtherProvisionsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of liabilities under insurance contracts and reinsurance contracts issued. [Refer: Types of insurance contracts [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph 37 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_37_b&doctype=Standard&book=b -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph IG20 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_IG20_a&doctype=Implementation%20Guidance&book=b -URIDate 2019-03-27 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph IG37 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_IG37_a&doctype=Implementation%20Guidance&book=b -URIDate 2019-03-27 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-b&anchor=para_55&doctype=Standard&book=b -URIDate 2019-03-27 + Details
Name: | ifrs-full_LiabilitiesArisingFromInsuranceContracts
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of provisions other than provisions for employee benefits. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2019-01-01 -Paragraph 84 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2019-en-r&anchor=para_84_a&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 78 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_78_d&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_OtherProvisions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of liability for written premiums on insurance contracts that have not yet been earned. [Refer: Types of insurance contracts [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph IG22 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_IG22_a&doctype=Implementation%20Guidance&book=b -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph 37 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_37_b&doctype=Standard&book=b -URIDate 2019-03-27 + Details
Name: | ifrs-full_UnearnedPremiums
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Adjustment of financial surplus. + References No definition available. + Details
Name: | itub_AdjustmentOfFinancialSurplus
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition Decrease in deferral of risk. + References No definition available. + Details
Name: | itub_DecreaseInDeferralOfRisk
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Disposals and redemptions. + References No definition available. + Details
Name: | itub_DisposalsAndRedemptions
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Gross liabilities arising from insurance contracts. + References No definition available. + Details
Name: | itub_GrossLiabilitiesArisingFromInsuranceContracts
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition Insurance claims reported by policyholders + References No definition available. + Details
Name: | itub_InsuranceClaimsReportedByPolicyholders
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Mathematicl reserve for benefits to be granted and benefits granted. + References No definition available. + Details
Name: | itub_MathematicalReserveForBenefitsToBegrantedAndBenefitsGranted
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net Reinsurance Reserve For Unsettled Claims + References No definition available. + Details
Name: | itub_NetReinsuranceReserveForUnsettledClaims
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Other liabilities under insurance contracts. + References No definition available. + Details
Name: | itub_OtherLiabilitiesUnderInsuranceContracts
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Payment of claims and benefits out of insurance contracts. + References No definition available. + Details
Name: | itub_PaymentOfClaimsAndBenefitsOutOfInsuranceContracts
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Redemptions and other unsettled amounts + References No definition available. + Details
Name: | itub_RedemptionsAndOtherUnsettledAmounts
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Technical provisions Related Expenses + References No definition available. + Details
Name: | itub_TechnicalProvisionsRelatedExpenses
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_TypesOfInsuranceContractsAxis=itub_InsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfInsuranceContractsAxis=itub_PrivatePensionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |