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v3.21.1

Commissions Expense - Summary of Commissions Expense (Detail) - ARS ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of fee and commission expense [line items] |  |  |
Fee and commission expense | $ 2,047,292 | $ 2,191,792 | $ 1,947,749
Commissions related to debt securities [member] |  |  |
Disclosure of fee and commission expense [line items] |  |  |
Fee and commission expense |  |  | 606
Commissions related to trading and foreign exchange transactions [member] |  |  |
Disclosure of fee and commission expense [line items] |  |  |
Fee and commission expense | 117,519 | 209,142 | 102,926
Commissions paid ATM exchange [member] |  |  |
Disclosure of fee and commission expense [line items] |  |  |
Fee and commission expense | 1,263,086 | 1,057,785 | 818,625
Checkbooks commissions and compensating cameras [member] |  |  |
Disclosure of fee and commission expense [line items] |  |  |
Fee and commission expense | 404,450 | 453,612 | 449,593
Commissions credit cards and foreign trade [member] |  |  |
Disclosure of fee and commission expense [line items] |  |  |
Fee and commission expense | $ 262,237 | $ 471,253 | $ 575,999

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- Definition The amount of expense relating to fees and commissions. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_85&doctype=Standard -URIDate 2020-01-01 + Details
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