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DEFERRED INCOME TAX ASSETS/LIABILITIES - Income tax (expense) benefit (Details) - ARS ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
DEFERRED INCOME TAX ASSETS/LIABILITIES      
Current tax expense $ (241) $ (218)  
Deferred tax (expense) benefit (8,010) (19,072) $ 5,943
Income tax (expense) benefit $ (8,251) $ (19,290) $ 5,943