XML 31 R10.htm IDEA: XBRL DOCUMENT
v3.21.1

Functional and presentation currency and hyperinflationary accounting | 12 Months Ended
--- | ---
Dec. 31, 2020
Functional And Presentation Currency [Abstract] |
Functional and Presentation Currency | 3. Functional and presentation currency and hyperinflationary accounting The Argentine Peso is the functional and presentation currency of the Bank and its subsidiaries. All amounts are stated in thousands of Argentine pesos, unless otherwise stated. See note 5.22 for Hyperinflationary accounting.

X
- Definition Functional and presentation currency. + References No definition available. + Details
Name: | bbar_FunctionalAndPresentationCurrencyAbstract
Namespace Prefix: | bbar_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The description of the entity's accounting policy for the currency of the primary economic environment in which the entity operates. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 117 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_117_b&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_DescriptionOfAccountingPolicyForFunctionalCurrencyExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration