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Income Tax - Income Tax Expense (Details) - ARS ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Income Tax Expense [Abstract] |  |  |  |  |  |
Current Tax | $ 12,165,929 | $ 14,681,916 | $ 11,300,604 |  |  |
Deferred Tax | (3,804,028) | (6,167,131) | 742,435 |  |  |
Inflation adjustment for prior period (see Note 15.5) |  | (5,693,726) | (2,961,457) |  |  |
Over/under income tax from prior year | (327,807) |  |  |  |  |
Income tax expense | $ 8,034,094 | $ 2,821,059 | $ 9,081,582 | $ 555,002 | $ 647,945 | $ 264,257

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