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Off Balance Sheet Transactions - Schedule of Different Off Balance Sheet Transactions (Detail) - ARS ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Disclosure of financial investments [line items] |  |
Custody of government and private securities and other assets held by third parties | $ 184,427,915 | $ 110,822,511
Preferred and other collaterals received from customers | 84,474,882 | 75,613,250
Outstanding checks not yet paid | 7,536,159 | 10,919,866
Checks already deposited and pending clearance | 3,818,869 | 4,107,423
Written-off credits | $ 4,349,903 | $ 4,127,716

X
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