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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

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