XML 195 R178.htm IDEA: XBRL DOCUMENT
v3.23.1

Fair Values Of Financial Instruments - Summary of corresponding underlying asset (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2022
PJ3N6U001 [Member] |
Disclosure Of Changes In Underlying Asset [Line Items] |
Underlying | BONO TDJ23
PL3N7V001 [Member] |
Disclosure Of Changes In Underlying Asset [Line Items] |
Underlying | BONO TDL23
PF3N2H001 [Member] |
Disclosure Of Changes In Underlying Asset [Line Items] |
Underlying | LT X17F3
X3JN6G001 [Member] |
Disclosure Of Changes In Underlying Asset [Line Items] |
Underlying | LCER16J3$
XY3N5J001 [Member] |
Disclosure Of Changes In Underlying Asset [Line Items] |
Underlying | LT X19Y3

X
- Definition Disclosure of changes in underlying asset. + References No definition available. + Details
Name: | bbar_DisclosureOfChangesInUnderlyingAssetLineItems
Namespace Prefix: | bbar_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | bbar_UnderlyingAssetAxis=bbar_AssetOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bbar_UnderlyingAssetAxis=bbar_AssetTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bbar_UnderlyingAssetAxis=bbar_AssetThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bbar_UnderlyingAssetAxis=bbar_AssetFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bbar_UnderlyingAssetAxis=bbar_AssetFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |