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Fair Value Quantitative and Qualitative Disclosures - Additional Information (Detail) $ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2020 ARS ($) shares | Dec. 31, 2020 USD ($) shares | Dec. 31, 2019 ARS ($) | Dec. 31, 2018 ARS ($)
Disclosure of fair value measurement of assets and liability [line items] |  |  |  |
Rate of Interest | 4.49408% | 4.49408% |  |
Equity Instruments At Fair Value Through Profit Or Loss | $ 5,218,299 |  | $ 3,562,427 |
Number of Shares on Financial Assets | shares | 8,910,878 | 8,910,878 |  |
Gains (losses) on financial assets at fair value through profit or loss | $ 13,978,694 |  | $ 10,799,758 | $ 2,641,829
Gain from derivative financial instruments out options [member] |  |  |  |
Disclosure of fair value measurement of assets and liability [line items] |  |  |  |
Gains (losses) on financial assets at fair value through profit or loss |  | $ 982,246 |  |
Gain from derivative financial instruments out options [member] | Bottom of range [member] |  |  |  |
Disclosure of fair value measurement of assets and liability [line items] |  |  |  |
Gains (losses) on financial assets at fair value through profit or loss |  | 944,755 |  |
Gain from derivative financial instruments out options [member] | Top of range [member] |  |  |  |
Disclosure of fair value measurement of assets and liability [line items] |  |  |  |
Gains (losses) on financial assets at fair value through profit or loss |  | $ 1,072,222 |  |
Prisma Medios de Pago SA [member] |  |  |  |
Disclosure of fair value measurement of assets and liability [line items] |  |  |  |
Equity Instruments At Fair Value Through Profit Or Loss | 4,975,977 |  |  |
Prisma Medios de Pago SA [member] | Bottom of range [member] |  |  |  |
Disclosure of fair value measurement of assets and liability [line items] |  |  |  |
Equity Instruments At Fair Value Through Profit Or Loss | 4,652,478 |  |  |
Prisma Medios de Pago SA [member] | Top of range [member] |  |  |  |
Disclosure of fair value measurement of assets and liability [line items] |  |  |  |
Equity Instruments At Fair Value Through Profit Or Loss | $ 5,357,416 |  |  |

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