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Capital Management, Corporate Governance Transparency Policy and Risk Management - Additional Information (Detail) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 ARS ($) Director Board_member Branches | Dec. 31, 2019 ARS ($)
Disclosure of detailed information about financial instruments [line items] |  |
Number of board of directors | Board_member | 13 |
Number of independent directors | Director | 6 |
Percentage of high liquidity assets portfolio | 25.00% |
Percentage of the refinanced principal not yet settled | 5.00% |
Percentage of confidence level | 99.00% |
Liabilities | $ 622,983,252 | $ 461,759,370
Bank and similar charges | 150,654 |
Loans to consumers | 3,083,342 |
Loans and advances to banks | 3,679,382 |
Impairment credit losses | $ 445,386 |
Bottom of range [member] | Low Risk Customer [Member] | Stage 1 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Number of arrear days upon impairment | 5 days |
Bottom of range [member] | No Low Risk Customer [Member] | Stage 1 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Number of arrear days upon impairment | 31 days |
Bottom of range [member] | No Low Risk Customer [Member] | Stage 2 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Number of arrear days upon impairment | 30 days |
Number of arrear days upon increase risk for PD comparison | 31 days |
Top of range [member] | Low Risk Customer [Member] | Stage 1 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Number of arrear days upon increase risk for PD comparison | 4 days |
Top of range [member] | Low Risk Customer [Member] | Stage 2 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Number of arrear days upon impairment | 30 days |
Number of arrear days upon increase risk for PD comparison | 4 days |
Top of range [member] | Low Risk Customer [Member] | Stage 3 [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Number of arrear days upon impairment | 90 days |
Top of range [member] | No Low Risk Customer [Member] | Stage 1 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Number of arrear days upon increase risk for PD comparison | 0 days |
Top of range [member] | No Low Risk Customer [Member] | Stage 2 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Number of arrear days upon impairment | 30 days |
Number of arrear days upon increase risk for PD comparison | 31 days |
Top of range [member] | No Low Risk Customer [Member] | Stage 3 [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Number of arrear days upon impairment | 90 days |
Top of range [member] | Nonlow Risk [Member] | Small And Medium Size Companies [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Liabilities | $ 72,640 |
Top of range [member] | Nonlow Risk [Member] | Agricultural Companies [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Liabilities | $ 72,640 |
Banco Macro SA [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Number of branches | Branches | 463 |
Liabilities | $ 603,048,974 | $ 457,560,065

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