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Fair Values Of Financial Instruments - Assets And Liabilities Measured At Fair Value (Details) - ARS ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Financial Assets Abstract |  |
Debt Securities FVTPL | $ 942,761 | $ 5,622,562
Derivative Financial Assets FVTPL | 3,877,749 | 4,148,248
Equity Instruments FVTPL | 7,795,950 | 5,653,673
Debt Securities FVOCI | 127,543,852 | 61,506,254
Equity Instruments FVOCI | 28,499 | 37,260
Financial Liabilities Abstract |  |
Trading Liabilities FVTPL |  | 790,707
Derivative Financial Liabilities FVTPL | 188,694 | 4,183,526
Book value Member |  |
Financial Assets Abstract |  |
Debt Securities FVTPL | 942,761 | 5,622,562
Derivative Financial Assets FVTPL | 3,877,749 | 4,148,248
Equity Instruments FVTPL | 7,795,950 | 5,653,673
Debt Securities FVOCI | 127,543,852 | 61,506,254
Equity Instruments FVOCI | 28,499 | 37,260
Total | 140,188,811 | 76,967,997
Financial Liabilities Abstract |  |
Trading Liabilities FVTPL |  | 790,707
Derivative Financial Liabilities FVTPL | 188,694 | 4,183,526
Total | 188,694 | 4,974,233
Total Fair Value Member |  |
Financial Assets Abstract |  |
Debt Securities FVTPL | 942,761 | 5,622,562
Derivative Financial Assets FVTPL | 3,877,749 | 4,148,248
Equity Instruments FVTPL | 7,795,950 | 5,653,673
Debt Securities FVOCI | 127,543,852 | 61,506,254
Equity Instruments FVOCI | 28,499 | 37,260
Total | 140,188,811 | 76,967,997
Financial Liabilities Abstract |  |
Trading Liabilities FVTPL |  | 790,707
Derivative Financial Liabilities FVTPL | 188,694 | 4,183,526
Total | 188,694 | 4,974,233
Level 1 - Fair Value Member |  |
Financial Assets Abstract |  |
Debt Securities FVTPL | 0 |
Derivative Financial Assets FVTPL | 0 |
Equity Instruments FVTPL | 1,762,142 | 1,524,516
Debt Securities FVOCI | 0 | 1,667,766
Equity Instruments FVOCI | 0 |
Total | 4,251,296 | 3,192,284
Financial Liabilities Abstract |  |
Trading Liabilities FVTPL |  | 790,707
Derivative Financial Liabilities FVTPL | 0 |
Total | 0 | 790,707
Level 2 - Fair Value Member |  |
Financial Assets Abstract |  |
Debt Securities FVTPL | 400,784 | 5,622,562
Derivative Financial Assets FVTPL | 2,695,749 | 3,215,686
Equity Instruments FVTPL | 0 |
Debt Securities FVOCI | 125,596,675 | 59,838,488
Equity Instruments FVOCI | 0 | 37,260
Total | 128,721,707 | 68,713,996
Financial Liabilities Abstract |  |
Derivative Financial Liabilities FVTPL | 188,694 | 4,183,526
Total | 188,694 | 4,183,526
Level 3 - Fair Value Member |  |
Financial Assets Abstract |  |
Debt Securities FVTPL | 0 |
Derivative Financial Assets FVTPL | 1,182,000 | 932,562
Equity Instruments FVTPL | 6,033,808 | 4,129,157
Debt Securities FVOCI | 0 |
Equity Instruments FVOCI | 0 |
Total | 7,215,808 | $ 5,061,719
Financial Liabilities Abstract |  |
Derivative Financial Liabilities FVTPL | 0 |
Total | $ 0 |

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