XML 210 R187.htm IDEA: XBRL DOCUMENT
v3.20.1

Related Parties - Transactions And Balances With Parent Company Except Key Management Personnel (Details) - ARS ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Cash And Other Demand Deposits Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | $ 456,433 | $ 399,200 |
Results With Parent Company | 0 | 0 | $ 0
Derivative Financial Assets Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 651,110 | 35,654 |
Results With Parent Company | 0 | 0 | 0
Other Financial Assets Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 540,612 | 476,933 |
Results With Parent Company | 0 | 0 | 0
Trading Liabilities Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 0 | 485,181 |
Results With Parent Company | 0 | 0 | 0
Other Liabilities Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 352,838 | 78,910 |
Results With Parent Company | 292,445 | 172,074 | 97,728
Derivative Financial Liabilities Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 1,200,403 | 78,759 |
Results With Parent Company | 7,027 | 154,252 | 0
Securities In Custody Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 56,893,378 | 87,676,176 |
Results With Parent Company | 0 | 0 | 0
Derivative Instruments Notional Amount Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 11,215,700 | 7,956,847 |
Results With Parent Company | 0 | 0 | 0
Securities Granted Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 706,792 | 913 |
Results With Parent Company | 2,426 | 3,357 | 1,966
Guarantees Received Member |  |  |
Transactions and Balances with Parent Company Except Key Management Personnel [Line Items] |  |  |
Balances With Parent Company | 28,362 | 1,103,964 |
Results With Parent Company | $ 0 | $ 0 | $ 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: |