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Financial Instruments Risks - Financial Assets and Liabilities Expected to be Collected or Paid Twelve Months After the Closing Date (Details) - ARS ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Financial assets |  |
Loans and advances | $ 559,634,833 | $ 683,212,273
Debt securities | 134,719,555 | 5,242,340,911
Other financial assets | 34,420,575 | 23,594,306
Total | 728,774,963 | 5,949,147,490
Financial liabilities |  |
Other financial liabilities | 22,099,882 | 18,421,874
Bank loans | 8,017,438 | 7,438,454
Deposits | 289,344 | 241,877
Total | $ 30,406,664 | $ 26,102,205

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- Definition The amount of loans received from banks expected to be paid twelve months after the end of the reporting period. + References No definition available. + Details
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Balance Type: | credit
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- Definition Total amount of financial assets expected to be collected or paid twelve months after the end of the reporting period. + References No definition available. + Details
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- Definition Financial assets to be collected breakdown. + References No definition available. + Details
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- Definition Total amount of financial liabilities expected to be paid twelve months after the end of the reporting period. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Definition Financial liabilities to be paid breakdown. + References No definition available. + Details
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- Definition The amount investment securities expected to be collected twelve months after the end of the reporting period. + References No definition available. + Details
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Namespace Prefix: | bbar_
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- Definition The amount of non-derivative financial assets with fixed or determinable payments that are not quoted in an active market, expected to be collected twelve months after the end of the reporting period. + References No definition available. + Details
Name: | bbar_LoansAndReceivablesExpectedToBeCollectedTwelveMonthsAfterTheEndOfTheReportingPeriod
Namespace Prefix: | bbar_
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- Definition Other financial assets expected to be collected 12 months after the end of the reporting. + References No definition available. + Details
Name: | bbar_OtherFinancialAssetsExpectedToBeCollected12MonthsAfterTheEndOfTheReporting
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition The amount of other financial liabilities expected to be paid twelve months after the end of the reporting period. + References No definition available. + Details
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- Definition The amount of deposit liabilities expected to be paid twelve months after the end of the reporting period. + References No definition available. + Details
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