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Cash and cash equivalents - Table of Cash and Cash Equivalents (Detail) - ARS ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Cash and cash equivalents [abstract]        
BCRA - Unrestricted current account $ 86,115,929 $ 146,352,604    
Cash 62,232,907 63,610,250    
Balances with other local and foreign institutions 3,691,234 2,770,171    
Total Cash and Cash Equivalents $ 152,040,070 $ 212,733,025 $ 207,554,779 $ 118,229,933