XML 204 R183.htm IDEA: XBRL DOCUMENT
v3.21.1

Related Parties - Transactions And Balances With Parent Company Except Key Management Personnel (Details) - ARS ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Cash And Other Demand Deposits Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | $ 1,168,271 | $ 621,390 |
Results With Parent Company | 0 |  |
Derivative Financial Assets Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 0 | 886,425 |
Results With Parent Company | 0 |  |
Other Financial Assets Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 0 | 735,992 |
Results With Parent Company | 0 |  |
Trading Liabilities Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 2,131 |  |
Results With Parent Company | 0 |  |
Other Liabilities Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 7,061,795 | 480,355 |
Results With Parent Company | 721,876 | 398,135 | $ 234,262
Derivative Financial Liabilities Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 11,618 | 1,634,234 |
Results With Parent Company | 385,850 | 9,569 | 209,999
Securities In Custody Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 63,028,083 | 77,454,929 |
Results With Parent Company | 0 |  |
Derivative Instruments Notional Amount Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 925,000 | 15,269,110 |
Results With Parent Company | 0 |  |
Securities Granted Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 2,656,720 | 962,230 |
Results With Parent Company | 5,956 | 3,254 | $ 4,570
Guarantees Received Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 3,725,274 | $ 38,612 |
Results With Parent Company | $ 0 |  |

X
- Definition Balances with key parent company except key management personnel + References No definition available. + Details
Name: | bbar_BalancesWithKeyParentCompanyExceptKeyManagementPersonnel
Namespace Prefix: | bbar_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Transactions with key parent company except key management personnel + References No definition available. + Details
Name: | bbar_TransactionsWithKeyParentCompanyExceptKeyManagementPersonnel
Namespace Prefix: | bbar_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=bbar_CashAndOtherDemandDepositsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=bbar_DerivativeFinancialAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=bbar_OtherFinancialsAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=bbar_TradingLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=bbar_OtherLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=bbar_DerivativeFinancialLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=bbar_SecuritiesInCustodyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=bbar_DerivativeInstrumentsNotionalAmountMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=bbar_SecuritiesGrantedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=bbar_GuaranteesReceivedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |