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v3.22.1

Fee and Commission Expense (Details) - ARS ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Fee and commission expense [abstract] |  |  |
For credit and debit cards | $ 11,968,017 | $ 12,867,333 | $ 12,478,209
For promotions | 1,574,924 | 2,636,477 | 3,960,212
For foreign trade transactions | 509,937 | 420,304 | 732,870
Linked to transactions with securities | 11,969 | 6,844 | 6,035
Other commission expenses | 2,373,521 | 1,311,454 | 2,206,376
TOTAL | $ 16,438,368 | $ 17,242,412 | $ 19,383,702

X
- Definition The amount of expense relating commissions for credit and debit cards. + References No definition available. + Details
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Namespace Prefix: | bbar_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of expense relating commissions for foreign trade transactions. + References No definition available. + Details
Name: | bbar_ForForeignTradeTransactions
Namespace Prefix: | bbar_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expense relating commissions for promotions. + References No definition available. + Details
Name: | bbar_ForPromotions
Namespace Prefix: | bbar_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Linked to transactions with securities. + References No definition available. + Details
Name: | bbar_LinkedToTransactionsWithSecurities
Namespace Prefix: | bbar_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expense relating commissions for other commission expenses. + References No definition available. + Details
Name: | bbar_OtherCommissionExpenses
Namespace Prefix: | bbar_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expense relating to fees and commissions. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_85&doctype=Standard -URIDate 2021-03-24 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Balance Type: | na
Period Type: | duration