Name:	bbar_CarryingAmountOfInvestmentProperties
Namespace Prefix:	bbar_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount of cost of investment properties.

No definition available.

Name:	bbar_CostOfInvestmentProperties
Namespace Prefix:	bbar_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The depreciation for the period of investment properties.

No definition available.

Name:	bbar_DepreciationForThePeriodInvestmentProperties
Namespace Prefix:	bbar_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Depreciation Investment Property Abstract

No definition available.

Name:	bbar_DepreciationInvestmentPropertyAbstract
Namespace Prefix:	bbar_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The amount of depreciation recognised on investment properties.

No definition available.

Name:	bbar_DepreciationOfInvestmentPropertiesAccumulated
Namespace Prefix:	bbar_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

Depreciation transfer from property and equipment.

No definition available.

Name:	bbar_DepreciationTransferFromPropertyAndEquipment
Namespace Prefix:	bbar_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Impairment

No definition available.

Name:	bbar_ImpairmentAbstract
Namespace Prefix:	bbar_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Impairment loss recognized in profit or loss investment.

No definition available.

Name:	bbar_ImpairmentLossRecognizedInProfitOrLossInvestment
Namespace Prefix:	bbar_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

No definition available.

Name:	ifrs-full_DisclosureOfInvestmentPropertyLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The increase (decrease) in property, plant and equipment resulting from transfers from (to) investment property. [Refer: Property, plant and equipment; Investment property]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 16
-IssueDate 2024-01-01
-Paragraph 73
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e&doctype=Standard
-URIDate 2024-03-27