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Equity Instruments at fair value through Profit or loss - Summary of Equity Instruments at Fair Value Through Profit or Loss (Detail) - ARS ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | $ 5,218,299 | $ 3,562,427
TOTAL EQUITY INSTRUMENTS | 5,218,299 | 3,562,427
Local [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | 5,206,672 | 3,547,969
Foreign [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | 11,627 | 14,458
Prisma Medios de Pago SA [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | 4,975,977 |
Other [member] | Local [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | 1,407 | 1,751
Level 3 [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | 5,208,444 | 3,549,585
Level 3 [member] | Prisma Medios de Pago SA [member] | Local [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | 4,975,977 | 3,405,143
Level 3 [member] | Mercado Abierto Electrnico SA [member] | Local [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | 144,222 | 70,730
Level 3 [member] | Matba Rofex SA [member] | Local [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | 21,242 | 15,723
Level 3 [member] | Argentina Clearing SA [member] | Local [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | 14,731 | 14,217
Level 3 [member] | COELSA [member] | Local [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | 19,511 | 13,076
Level 3 [member] | Mercado a Termino Rosario SA [member] | Local [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | 4,308 | 12,510
Level 3 [member] | SEDESA [member] | Local [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | 11,682 | 9,492
Level 3 [member] | Provincanje SA [member] | Local [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | 6,243 | 3,315
Level 3 [member] | Proin SA [member] | Local [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | 1,960 | 2,012
Level 3 [member] | Sociedad de Telecomunicaciones Financieras Interbancarias Mundiales [member] | Foreign [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | 1,899 | 1,727
Level 3 [member] | AC Inversora SA [Member] | Local [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | 5,389 |
Level 1 [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | 9,855 | 12,842
Level 1 [member] | Banco Latinoamericano de Comercio Exterior SA [member] | Foreign [member] |  |
Disclosure of equity instruments at fair value through profit or loss [line items] |  |
Equity Instruments at fair value through profit or loss | $ 9,728 | $ 12,731

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