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Accounting Items That Identify the Compliance With Minimum Cash Requirements - Summary of Minimum Cash Requirement Constitute by Bank (Detail) - Banco Macro SA [member]
Dec. 31, 2021
ARS ($)
Disclosure of accounts showing compliance with minimum cash requirements [line items]  
Cash requirement constitute by bank $ 192,109,618
BCRA accounts [member] | Cash and deposits in banks [member]  
Disclosure of accounts showing compliance with minimum cash requirements [line items]  
Cash requirement constitute by bank 106,641,108
Central bank bills [member] | Other debt securities 1 [member]  
Disclosure of accounts showing compliance with minimum cash requirements [line items]  
Cash requirement constitute by bank 48,373,222
Government securities [member] | Other debt securities 1 [member]  
Disclosure of accounts showing compliance with minimum cash requirements [line items]  
Cash requirement constitute by bank 21,570,101
Special guarantees accounts in the BCRA [member] | Financial assets delivered as guarantee [member]  
Disclosure of accounts showing compliance with minimum cash requirements [line items]  
Cash requirement constitute by bank $ 15,525,187