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v3.24.1.u1

Restricted assets (Details) - ARS ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Disclosure Of Restricted Assets [Line Items] |  |
Restricted Shares | $ 12,799 | $ 128,642
Bonds Due 2024 [member] |  |
Disclosure Of Restricted Assets [Line Items] |  |
Restricted Shares | $ 12,799 | $ 128,642

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- Definition Disclosure of restricted assets [LineItem]. + 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 The amount of restricted shares as collateral granted by the entity. + References No definition available. + Details
Name: | bbar_RestrictedShares
Namespace Prefix: | bbar_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | bbar_DebtInstrumentAxis=bbar_BondsDueTwoThousandTwentyFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |