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Other Operating Income - Summary of Other Operating Income (Detail) - ARS ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure Of Other Non-Operating Income Expense [line items]      
Services $ 2,873,053 $ 2,740,048 $ 3,371,630
Adjustments and interest from other receivables 722,473 855,246 552,913
Derecognition or substantial modification of financial liabilities 228,983 556,936 1,473,234
Adjustments from other receivables with CER clauses 176,133 216,298  
Sale of property, plant and equipment 7,767   79,472
Sale of non-current assets held for sale   4,490,457  
Initial recognition of loans   163,172 165,547
Sale of investment property and other non-financial assets     102,627
Other 1,361,353 1,428,841 1,632,921
Operating income $ 5,369,762 $ 10,450,998 $ 7,378,344