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Financial assets at amortized cost - Narrative (Details) | Dec. 31, 2023 ARS ($)
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Financial Assets at Amortized Cost [Abstract] |
Fair value of finacial assets accepted as collateral | $ 2,886,702,153

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- Definition The fair value of financial assets accepted as collateral that the Group is permitted to sell or repledge in the absence of default. + References No definition available. + Details
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Namespace Prefix: | bbar_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Financial Assets at Amortized Cost Abstract. + References No definition available. + Details
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Namespace Prefix: | bbar_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration