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Commissions Income - Summary of Commissions Income (Detail) - ARS ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure of fee and commission income [line items] |  |  |
Fee and commission income | $ 36,984,075 | $ 37,347,136 | $ 39,950,749
Performance obligations satisfied at point in time [member] | Commissions related to obligations [member] |  |  |
Disclosure of fee and commission income [line items] |  |  |
Fee and commission income | 20,369,277 | 19,612,373 | 22,876,356
Performance obligations satisfied at point in time [member] | Commissions related to credit cards [member] |  |  |
Disclosure of fee and commission income [line items] |  |  |
Fee and commission income | 12,113,679 | 12,694,972 | 12,188,881
Performance obligations satisfied at point in time [member] | Commissions related to insurance [member] |  |  |
Disclosure of fee and commission income [line items] |  |  |
Fee and commission income | 2,284,875 | 2,417,088 | 2,402,958
Performance obligations satisfied at point in time [member] | Commissions related to trading and foreign exchange transactions [member] |  |  |
Disclosure of fee and commission income [line items] |  |  |
Fee and commission income | 873,649 | 810,199 | 936,862
Performance obligations satisfied at point in time [member] | Commissions related to securities value[member] |  |  |
Disclosure of fee and commission income [line items] |  |  |
Fee and commission income | 758,342 | 821,854 | 561,296
Performance obligations satisfied at point in time [member] | Commissions related to loans and other financing [member] |  |  |
Disclosure of fee and commission income [line items] |  |  |
Fee and commission income | 165,704 | 277,319 | 327,804
Performance obligations satisfied at point in time [member] | Commissions related to financial guarantees granted [member] |  |  |
Disclosure of fee and commission income [line items] |  |  |
Fee and commission income | 5,917 | 1,749 | 8,164
Performance obligations satisfied over time [member] | Commissions related to obligations [member] |  |  |
Disclosure of fee and commission income [line items] |  |  |
Fee and commission income | 1,092 | 1,272 | 5,846
Performance obligations satisfied over time [member] | Commissions related to credit cards [member] |  |  |
Disclosure of fee and commission income [line items] |  |  |
Fee and commission income | 367,771 | 645,960 | 546,251
Performance obligations satisfied over time [member] | Commissions related to trading and foreign exchange transactions [member] |  |  |
Disclosure of fee and commission income [line items] |  |  |
Fee and commission income | 38,860 | 63,245 | 69,782
Performance obligations satisfied over time [member] | Commissions related to loans and other financing [member] |  |  |
Disclosure of fee and commission income [line items] |  |  |
Fee and commission income | 4,814 | 1,104 | 21,980
Performance obligations satisfied over time [member] | Commissions related to financial guarantees granted [member] |  |  |
Disclosure of fee and commission income [line items] |  |  |
Fee and commission income | $ 95 | $ 1 | $ 4,569

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- Definition The amount of income relating to fees and commissions. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_85&doctype=Standard -URIDate 2021-03-24 + Details
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