XML 166 R145.htm IDEA: XBRL DOCUMENT
v3.21.1

Capital and Reserves - Additional Information (Details) $ / shares in Units, $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2020 ARS ($) Vote $ / shares shares | Dec. 31, 2019 ARS ($) | Dec. 31, 2018 ARS ($) | Nov. 20, 2020 ARS ($) | May 15, 2020 ARS ($) | Apr. 24, 2019
Capital And Reserves [Line Items] |  |  |  |  |  |
Percent of legal reserve | 20.00% |  |  |  |  |
Dividends paid | $ 3,063,448 | $ 5,040,938 | $ 2,737,131 |  |  |
Distribution of dividend in nominal value |  |  |  | $ 12,000,000 | $ 2,500,000 |
BBVA Francs Valores SA [Member] |  |  |  |  |  |
Capital And Reserves [Line Items] |  |  |  |  |  |
Par value per share issued | $ / shares | $ 1 |  |  |  |  |
AcquisitionDate Percentage of Equity Interest in Acquiree held by Acquirer Immediately before Acquisition Date |  |  |  |  |  | 95.00%
Number of shares issued | shares | 50,441 |  |  |  |  |
Common Shares Issued Voting Rights Per Share | Vote | 1 |  |  |  |  |

X
- Definition Acquisition-Date Percentage of Equity Interest in Acquiree held by Acquirer Immediately before Acquisition Date + References No definition available. + Details
Name: | bbar_AcquisitiondatePercentageOfEquityInterestInAcquireeHeldByAcquirerImmediatelyBeforeAcquisitionDate
Namespace Prefix: | bbar_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Capital And Reserves + References No definition available. + Details
Name: | bbar_CapitalAndReservesLineItems
Namespace Prefix: | bbar_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Common Shares Issued, Voting Rights Per Share + References No definition available. + Details
Name: | bbar_CommonSharesIssuedVotingRightsPerShare
Namespace Prefix: | bbar_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Distribution of dividend in nominal value. + References No definition available. + Details
Name: | bbar_DistributionOfDividendInNominalValue
Namespace Prefix: | bbar_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Legal reserve is a percent of net income determined in accordance with BCRA accounting standards. + References No definition available. + Details
Name: | bbar_PercentOfLegalReserve
Namespace Prefix: | bbar_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow for dividends paid by the entity, classified as financing activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 31 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_31&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_DividendsPaidClassifiedAsFinancingActivities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase (decrease) in the number of ordinary shares issued. [Refer: Ordinary shares [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_IncreaseDecreaseInNumberOfOrdinarySharesIssued
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The nominal value per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 79 -Subparagraph a -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_79_a_iii&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_ParValuePerShare
Namespace Prefix: | ifrs-full_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=bbar_BbvaFrancsValoresSaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |