XML 201 R180.htm IDEA: XBRL DOCUMENT
v3.21.1

Related Parties - Remuneration Of Key Management Personnel (Details) - ARS ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Key Management Personnel Compensation [Abstract] |  |  |
Key Management Personnel Fees | $ 50,741 | $ 20,339 | $ 38,510
Key Management Personnel Compensation Total | $ 50,741 | $ 20,339 | $ 38,510

X
- References No definition available. + Details
Name: | bbar_KeyManagementPersonnelCompensationAbstract
Namespace Prefix: | bbar_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Key management personnel fees + References No definition available. + Details
Name: | bbar_KeyManagementPersonnelFees
Namespace Prefix: | bbar_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2020-01-01 -Paragraph 17 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=24&code=ifrs-tx-2020-en-r&anchor=para_17&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_KeyManagementPersonnelCompensation
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration