XML 90 R115.htm IDEA: XBRL DOCUMENT
v3.20.1

Loan and Lease Operations Portfolio - Summary of Reconciliation of Gross Portfolio of Loan Operations and Lease Operations (Detail) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | R$ 33,373 |
Closing balance | 36,029 | R$ 33,373
Cost [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 536,091 | 497,719
Derecognition | (14,299) | (13,547)
Acquisition / (Settlement) | 63,999 | 51,919
Closing balance | 585,791 | 536,091
Cost [member] | Corporate [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 102,643 | 107,647
Derecognition | (884) | (1,172)
Acquisition / (Settlement) | 3,543 | (3,832)
Closing balance | 105,302 | 102,643
Cost [member] | Micro/Small and medium companies [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 68,812 | 60,290
Derecognition | (1,995) | (2,471)
Acquisition / (Settlement) | 19,403 | 10,993
Closing balance | 86,220 | 68,812
Cost [member] | Individuals [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 212,564 | 193,385
Derecognition | (9,710) | (8,520)
Acquisition / (Settlement) | 37,636 | 27,699
Closing balance | 240,490 | 212,564
Cost [member] | Foreign [member] | Foreign loans - Latin America [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 152,072 | 136,397
Derecognition | (1,710) | (1,384)
Acquisition / (Settlement) | 3,417 | 17,059
Closing balance | 153,779 | 152,072
Cost [member] | Stage 1 [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 459,626 | 417,386
Transfer to Stage 2 | (38,071) | (32,377)
Transfer to Stage 3 | (3,870) | (4,061)
Cure from the Stage 2 | 17,810 | 19,989
Cure from the Stage 3 | 125 | 267
Acquisition / (Settlement) | 66,269 | 58,422
Closing balance | 501,889 | 459,626
Cost [member] | Stage 1 [member] | Corporate [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 90,716 | 91,442
Transfer to Stage 2 | (854) | (726)
Transfer to Stage 3 | (90) | (137)
Cure from the Stage 2 | 886 | 1,629
Cure from the Stage 3 | 13 | 113
Acquisition / (Settlement) | 5,152 | (1,605)
Closing balance | 95,823 | 90,716
Cost [member] | Stage 1 [member] | Micro/Small and medium companies [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 57,099 | 47,132
Transfer to Stage 2 | (5,534) | (4,891)
Transfer to Stage 3 | (770) | (742)
Cure from the Stage 2 | 3,215 | 2,849
Cure from the Stage 3 | 38 | 22
Acquisition / (Settlement) | 19,299 | 12,729
Closing balance | 73,347 | 57,099
Cost [member] | Stage 1 [member] | Individuals [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 177,488 | 161,364
Transfer to Stage 2 | (19,661) | (15,847)
Transfer to Stage 3 | (2,009) | (1,921)
Cure from the Stage 2 | 8,680 | 5,820
Acquisition / (Settlement) | 35,409 | 28,072
Closing balance | 199,907 | 177,488
Cost [member] | Stage 1 [member] | Foreign [member] | Foreign loans - Latin America [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 134,323 | 117,448
Transfer to Stage 2 | (12,022) | (10,913)
Transfer to Stage 3 | (1,001) | (1,261)
Cure from the Stage 2 | 5,029 | 9,691
Cure from the Stage 3 | 74 | 132
Acquisition / (Settlement) | 6,409 | 19,226
Closing balance | 132,812 | 134,323
Cost [member] | Stage 2 [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 36,894 | 35,894
Transfer to Stage 1 | (17,810) | (19,989)
Transfer to Stage 3 | (13,506) | (13,463)
Cure from the Stage 1 | 38,071 | 32,377
Cure from the Stage 3 | 2,191 | 3,872
Acquisition / (Settlement) | (3,920) | (1,797)
Closing balance | 41,920 | 36,894
Cost [member] | Stage 2 [member] | Corporate [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 2,222 | 3,833
Transfer to Stage 1 | (886) | (1,629)
Transfer to Stage 3 | (833) | (1,032)
Cure from the Stage 1 | 854 | 726
Cure from the Stage 3 | 6 | 1,347
Acquisition / (Settlement) | (407) | (1,023)
Closing balance | 956 | 2,222
Cost [member] | Stage 2 [member] | Micro/Small and medium companies [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 5,875 | 6,001
Transfer to Stage 1 | (3,215) | (2,849)
Transfer to Stage 3 | (1,759) | (1,610)
Cure from the Stage 1 | 5,534 | 4,891
Cure from the Stage 3 | 477 | 505
Acquisition / (Settlement) | 268 | (1,063)
Closing balance | 7,180 | 5,875
Cost [member] | Stage 2 [member] | Individuals [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 17,029 | 13,032
Transfer to Stage 1 | (8,680) | (5,820)
Transfer to Stage 3 | (7,579) | (7,796)
Cure from the Stage 1 | 19,661 | 15,847
Cure from the Stage 3 | 977 | 1,018
Acquisition / (Settlement) | (2,338) | 748
Closing balance | 19,070 | 17,029
Cost [member] | Stage 2 [member] | Foreign [member] | Foreign loans - Latin America [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 11,768 | 13,028
Transfer to Stage 1 | (5,029) | (9,691)
Transfer to Stage 3 | (3,335) | (3,025)
Cure from the Stage 1 | 12,022 | 10,913
Cure from the Stage 3 | 731 | 1,002
Acquisition / (Settlement) | (1,443) | (459)
Closing balance | 14,714 | 11,768
Cost [member] | Stage 3 [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 39,571 | 44,439
Transfer to Stage 1 | (125) | (267)
Transfer to Stage 2 | (2,191) | (3,872)
Cure from the Stage 1 | 3,870 | 4,061
Cure from the Stage 2 | 13,506 | 13,463
Derecognition | (14,299) | (13,547)
Acquisition / (Settlement) | 1,650 | (4,706)
Closing balance | 41,982 | 39,571
Cost [member] | Stage 3 [member] | Corporate [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 9,705 | 12,372
Transfer to Stage 1 | (13) | (113)
Transfer to Stage 2 | (6) | (1,347)
Cure from the Stage 1 | 90 | 137
Cure from the Stage 2 | 833 | 1,032
Derecognition | (884) | (1,172)
Acquisition / (Settlement) | (1,202) | (1,204)
Closing balance | 8,523 | 9,705
Cost [member] | Stage 3 [member] | Micro/Small and medium companies [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 5,838 | 7,157
Transfer to Stage 1 | (38) | (22)
Transfer to Stage 2 | (477) | (505)
Cure from the Stage 1 | 770 | 742
Cure from the Stage 2 | 1,759 | 1,610
Derecognition | (1,995) | (2,471)
Acquisition / (Settlement) | (164) | (673)
Closing balance | 5,693 | 5,838
Cost [member] | Stage 3 [member] | Individuals [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 18,047 | 18,989
Transfer to Stage 2 | (977) | (1,018)
Cure from the Stage 1 | 2,009 | 1,921
Cure from the Stage 2 | 7,579 | 7,796
Derecognition | (9,710) | (8,520)
Acquisition / (Settlement) | 4,565 | (1,121)
Closing balance | 21,513 | 18,047
Cost [member] | Stage 3 [member] | Foreign [member] | Foreign loans - Latin America [member] |  |
Disclosure of loans and lease operations [Line Items] |  |
Beginning balance | 5,981 | 5,921
Transfer to Stage 1 | (74) | (132)
Transfer to Stage 2 | (731) | (1,002)
Cure from the Stage 1 | 1,001 | 1,261
Cure from the Stage 2 | 3,335 | 3,025
Derecognition | (1,710) | (1,384)
Acquisition / (Settlement) | (1,549) | (1,708)
Closing balance | R$ 6,253 | R$ 5,981

X
- Definition The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2019-03-27 + Details
Name: | ifrs-full_AllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The decrease in financial assets resulting from derecognition. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph IG20B -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_IG20B&doctype=Implementation%20Guidance -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 35I -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_35I_c&doctype=Standard -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 35H -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_35H&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_DecreaseThroughDerecognitionFinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Acquisition and settlement of allowance account for credit losses of financial assets + References No definition available. + Details
Name: | itub_AcquisitionAndSettlementOfAllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Cure from stage one allowance account for credit losses of financial assets. + References No definition available. + Details
Name: | itub_CureFromStageOneAllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Cure from stage three allowance account for credit losses of financial assets. + References No definition available. + Details
Name: | itub_CureFromStageThreeAllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Cure from stage two allowance account for credit losses of financial assets. + References No definition available. + Details
Name: | itub_CureFromStageTwoAllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Disclosure of loans and lease operations + References No definition available. + Details
Name: | itub_DisclosureOfLoansAndLeaseOperationsLineItems
Namespace Prefix: | itub_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Transfer to (from) stage one allowance account for credit losses of financial assets + References No definition available. + Details
Name: | itub_TransferToFromStageOneAllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Transfers to (from) stage three allowance account for credit losses of financial assets + References No definition available. + Details
Name: | itub_TransfersToFromStageThreeAllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Transfers to stage two allowance account for credit losses of financial assets. + References No definition available. + Details
Name: | itub_TransfersToStageTwoAllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix: | itub_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_GrossCarryingAmountMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=ifrs-full_CorporateLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=itub_MicroSmallAndMediumCompaniesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=itub_IndividualsMember
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: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=itub_ForeignLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ImpairmentOfFinancialAssetsAxis=itub_StageOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ImpairmentOfFinancialAssetsAxis=itub_StageTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ImpairmentOfFinancialAssetsAxis=itub_StageThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |