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Restricted Assets - Summary of Restricted Assets (Detail) - ARS ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Disclosure of restricted assets [line items] |  |
Restricted assets | $ 15,187,041 | $ 15,595,373
Guaranteed financial assets | 14,292,358 | 14,530,739
Debt securities at fair value through profit or loss [member] |  |
Disclosure of restricted assets [line items] |  |
Restricted assets | 302,725 | 530,542
Debt securities at fair value through profit or loss [member] | Discount bonds one [member] |  |
Disclosure of restricted assets [line items] |  |
Restricted assets | 146,459 | 131,191
Debt securities at fair value through profit or loss [member] | Federal Government Treasury Bonds And Discount Bonds One [Member] |  |
Disclosure of restricted assets [line items] |  |
Restricted assets | 61,180 | 205,446
Debt securities at fair value through profit or loss [member] | Federal Government Treasury Bonds And Discount Bonds Two [Member] |  |
Disclosure of restricted assets [line items] |  |
Restricted assets | 39,368 | 159,736
Debt securities at fair value through profit or loss [member] | Discount bonds two [member] |  |
Disclosure of restricted assets [line items] |  |
Restricted assets | 32,926 | 29,493
Debt securities at fair value through profit or loss [member] | National Treasury Bills [Member] |  |
Disclosure of restricted assets [line items] |  |
Restricted assets | 19,600 |
Debt securities at fair value through profit or loss [member] | Federal Government Treasury Bonds One [Member] |  |
Disclosure of restricted assets [line items] |  |
Restricted assets | 3,192 |
Debt securities at fair value through profit or loss [member] | Discount bonds three [member] |  |
Disclosure of restricted assets [line items] |  |
Restricted assets |  | 4,676
Other Financial Assets One [member] |  |
Disclosure of restricted assets [line items] |  |
Restricted assets | 115,538 | 97,444
Other Financial Assets One [member] | Sundry debtors one [member] |  |
Disclosure of restricted assets [line items] |  |
Restricted assets | 11,459 | 4,695
Other Financial Assets One [member] | Sundry debtors two [member] |  |
Disclosure of restricted assets [line items] |  |
Restricted assets | 827 | 1,126
Other Financial Assets One [member] | Mutual funds [member] |  |
Disclosure of restricted assets [line items] |  |
Restricted assets | 103,252 | 91,623
Loans and other financing [member] |  |
Disclosure of restricted assets [line items] |  |
Restricted assets | 260,000 |
Loans and other financing [member] | Interests derived from contributions made as contributing partner [member] |  |
Disclosure of restricted assets [line items] |  |
Restricted assets | 260,000 |
Guarantee one [member] |  |
Disclosure of restricted assets [line items] |  |
Guaranteed financial assets | 12,040,746 | 10,127,017
Guarantee two [member] |  |
Disclosure of restricted assets [line items] |  |
Guaranteed financial assets | 1,317,869 | 1,098,129
Guarantee three [member] |  |
Disclosure of restricted assets [line items] |  |
Guaranteed financial assets | 695,748 | 1,466,345
Guarantee four [member] |  |
Disclosure of restricted assets [line items] |  |
Guaranteed financial assets | 237,995 | 1,839,248
Other non-financial assets [member] |  |
Disclosure of restricted assets [line items] |  |
Restricted assets | 216,420 | 436,648
Other non-financial assets [member] | Real property [member] |  |
Disclosure of restricted assets [line items] |  |
Restricted assets | $ 216,420 | $ 436,648

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