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v3.23.1

Related Parties - Transactions And Balances With Key Management Personnel (Details) - ARS ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Deposits Member |  |  |
Disclosure Of Transactions And Balances With Key Management Personnel [Line Items] |  |  |
Balances With Key Management Personnel | $ 38,482 | $ 25,121 |
Transactions with key management personnel | 369 | 689 | $ 3,161
Credit Cards Member | Loans Member |  |  |
Disclosure Of Transactions And Balances With Key Management Personnel [Line Items] |  |  |
Balances With Key Management Personnel | 21,011 | 6,934 |
Transactions with key management personnel | 4,476 | 2,104 | 3,325
Overdrafts Member | Loans Member |  |  |
Disclosure Of Transactions And Balances With Key Management Personnel [Line Items] |  |  |
Balances With Key Management Personnel | 2 | 0 |
Transactions with key management personnel | 16 | 0 | 0
Mortgage With Key Management Personnel Member | Loans Member |  |  |
Disclosure Of Transactions And Balances With Key Management Personnel [Line Items] |  |  |
Balances With Key Management Personnel | 1,056 | 2,153 |
Transactions with key management personnel | $ 16,521 | $ 458 | $ 750

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

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

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

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- Details
Name: | bbar_LoansAndDepositsAxis=bbar_DepositsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
Name: | ifrs-full_BusinessCombinationsAxis=bbar_CreditCardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | bbar_LoansAndDepositsAxis=bbar_LoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |