XML 161 R140.htm IDEA: XBRL DOCUMENT
v3.21.1

Provisions - Expected Terms to Settle Obligations (Details) - ARS ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Provisions Within 12 Months [Member] | Other provisions [member] |  |
Disclosure Of Provisions Expected To Settle Obligations [Line Items] |  |
Provisions For Financial Guarantees And Loan Commitments | $ 1,129,070 | $ 1,215,982
Provisions Within 12 Months [Member] | Provision for Commercial Claims [member] |  |
Disclosure Of Provisions Expected To Settle Obligations [Line Items] |  |
Provisions For Financial Guarantees And Loan Commitments | 826,610 | 873,356
Provisions Within 12 Months [Member] | Provisions labor-related [member] |  |
Disclosure Of Provisions Expected To Settle Obligations [Line Items] |  |
Provisions For Financial Guarantees And Loan Commitments | 78,737 | 59,532
Provisions Within 12 Months [Member] | Provisions tax claims [member] |  |
Disclosure Of Provisions Expected To Settle Obligations [Line Items] |  |
Provisions For Financial Guarantees And Loan Commitments | 69,429 | 44,703
Provisions Within 12 Months [Member] | Others [member] |  |
Disclosure Of Provisions Expected To Settle Obligations [Line Items] |  |
Provisions For Financial Guarantees And Loan Commitments | 154,294 | 238,391
Provisions Within 12 Months [Member] | Provisions for reorganization [member] |  |
Disclosure Of Provisions Expected To Settle Obligations [Line Items] |  |
Provisions For Financial Guarantees And Loan Commitments | 2,029,162 | 2,690,285
Provisions Within 12 Months [Member] | Financial guarantees and loan commitments [member] |  |
Disclosure Of Provisions Expected To Settle Obligations [Line Items] |  |
Provisions For Financial Guarantees And Loan Commitments | 1,364,594 | 1,233,260
Provisions After 12 Months [Member] | Other provisions [member] |  |
Disclosure Of Provisions Expected To Settle Obligations [Line Items] |  |
Provisions For Financial Guarantees And Loan Commitments | 1,504,775 | 2,094,561
Provisions After 12 Months [Member] | Provision for Commercial Claims [member] |  |
Disclosure Of Provisions Expected To Settle Obligations [Line Items] |  |
Provisions For Financial Guarantees And Loan Commitments | 1,131,322 | 1,732,010
Provisions After 12 Months [Member] | Provisions labor-related [member] |  |
Disclosure Of Provisions Expected To Settle Obligations [Line Items] |  |
Provisions For Financial Guarantees And Loan Commitments | 172,167 | 218,469
Provisions After 12 Months [Member] | Provisions tax claims [member] |  |
Disclosure Of Provisions Expected To Settle Obligations [Line Items] |  |
Provisions For Financial Guarantees And Loan Commitments | 113,522 | 99,054
Provisions After 12 Months [Member] | Others [member] |  |
Disclosure Of Provisions Expected To Settle Obligations [Line Items] |  |
Provisions For Financial Guarantees And Loan Commitments | 87,764 | $ 45,028
Provisions After 12 Months [Member] | Provisions for reorganization [member] |  |
Disclosure Of Provisions Expected To Settle Obligations [Line Items] |  |
Provisions For Financial Guarantees And Loan Commitments | 0 |
Provisions After 12 Months [Member] | Financial guarantees and loan commitments [member] |  |
Disclosure Of Provisions Expected To Settle Obligations [Line Items] |  |
Provisions For Financial Guarantees And Loan Commitments | $ 0 |

X
- References No definition available. + Details
Name: | bbar_DisclosureOfProvisionsExpectedToSettleObligationsLineItems
Namespace Prefix: | bbar_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of the provision for financial guarantees and loan commitments. + References No definition available. + Details
Name: | bbar_ProvisionsForFinancialGuaranteesAndLoanCommitments
Namespace Prefix: | bbar_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | bbar_ExpectedTermsToSettleObligationsProvisionsAxis=bbar_ProvisionsWithin12MonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=ifrs-full_MiscellaneousOtherProvisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=bbar_ProvisionForCommercialClaimsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=bbar_LaborRelatedProvisionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=ifrs-full_ProvisionForTaxesOtherThanIncomeTaxMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=ifrs-full_OtherEnvironmentRelatedProvisionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=ifrs-full_RestructuringProvisionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfProvisionsAxis=ifrs-full_ProvisionForCreditCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bbar_ExpectedTermsToSettleObligationsProvisionsAxis=bbar_ProvisionsAfter12MonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |