XML 232 R215.htm IDEA: XBRL DOCUMENT
v3.25.1

Minimum cash and minimum capital - Narrative (Details) | 12 Months Ended
--- | ---
Dec. 31, 2024
Minimum Cash And Minimum Capital [Abstract] |
Percentage of sum of credit-risk-weighted asset transactions | 8.00%

X
- Definition The amount of minimum capital requirement for credit risk, percent of the sum of credit-risk-weighted asset transactions without delivery against payment. + References No definition available. + Details
Name: | bbar_ItemOfMinimumCapitalRequirementForCreditRisk
Namespace Prefix: | bbar_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum cash and minimum capital. + References No definition available. + Details
Name: | bbar_MinimumCashAndMinimumCapitalAbstract
Namespace Prefix: | bbar_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration