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Financial Liabilities At Amortised Cost - Bank Loans (Details) - ARS ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Bank Loans [Abstract]
Local financial institutions	$ 19,225,493	$ 22,815,092
Foreign financial institutions	559,652	0
BCRA	87,997	88,691
Total Bank Loans	$ 19,873,142	$ 22,903,783

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- References

No definition available.

+ Details

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- Definition

The amount of loans received from banks.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Liabilities due to foreign financial institution.

+ References

No definition available.

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- Definition

Liabilities due to local financial institution.

+ References

No definition available.

+ Details

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Namespace Prefix:	bbar_
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- Definition

The amount of liabilities due to central banks.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard
-URIDate 2022-03-24

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Balance Type:	credit
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