Fair Values Of Financial Instruments - Assets And Liabilities Measured At Fair Value (Details) - ARS ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financial Assets Abstract
Debt Securities FVTPL	$ 4,129,970	$ 11,549,889
Derivative Financial Assets FVTPL	3,047,036	909,793
Equity Instruments FVTPL	4,152,821	812,275
Debt Securities FVOCI	45,178,513	37,765,909
Equity Instruments FVOCI	27,369	21,423
Financial Liabilities Abstract
Trading Liabilities FVTPL	580,802	1,064,936
Derivative Financial Liabilities FVTPL	3,072,947	2,118,671
Accounting Balance Member
Financial Assets Abstract
Debt Securities FVTPL	4,129,970	11,549,889
Derivative Financial Assets FVTPL	3,047,036	909,793
Equity Instruments FVTPL	4,152,821	812,275
Debt Securities FVOCI	45,178,513	37,765,909
Equity Instruments FVOCI	27,369	21,423
Total	56,535,709	51,059,289
Financial Liabilities Abstract
Trading Liabilities FVTPL	580,802	1,064,936
Derivative Financial Liabilities FVTPL	3,072,947	2,118,671
Total	3,653,749	3,183,607
Total Fair Value Member
Financial Assets Abstract
Debt Securities FVTPL	4,129,970	11,549,889
Derivative Financial Assets FVTPL	3,047,036	909,793
Equity Instruments FVTPL	4,152,821	812,275
Debt Securities FVOCI	45,178,513	37,765,909
Equity Instruments FVOCI	27,369	21,423
Total	56,535,709	51,059,289
Financial Liabilities Abstract
Trading Liabilities FVTPL	580,802	1,064,936
Derivative Financial Liabilities FVTPL	3,072,947	2,118,671
Total	3,653,749	3,183,607
Level 1 - Fair Value Member
Financial Assets Abstract
Debt Securities FVTPL	0	83,086
Derivative Financial Assets FVTPL	0	0
Equity Instruments FVTPL	1,119,811	812,275
Debt Securities FVOCI	1,225,033	154,088
Equity Instruments FVOCI	0	20,346
Total	2,344,844	1,069,795
Financial Liabilities Abstract
Trading Liabilities FVTPL	580,802	250,279
Derivative Financial Liabilities FVTPL	0	0
Total	580,802	250,279
Level 2 - Fair Value Member
Financial Assets Abstract
Debt Securities FVTPL	4,129,970	11,466,803
Derivative Financial Assets FVTPL	2,362,036	909,793
Equity Instruments FVTPL	0	0
Debt Securities FVOCI	43,953,480	37,611,821
Equity Instruments FVOCI	27,369	1,077
Total	50,472,855	49,989,494
Financial Liabilities Abstract
Trading Liabilities FVTPL	0	814,657
Derivative Financial Liabilities FVTPL	3,072,947	2,118,671
Total	3,072,947	$ 2,933,328
Level 3 - Fair Value Member
Financial Assets Abstract
Debt Securities FVTPL	0
Derivative Financial Assets FVTPL	685,000
Equity Instruments FVTPL	3,033,010
Debt Securities FVOCI	0
Equity Instruments FVOCI	0
Total	3,718,010
Financial Liabilities Abstract
Trading Liabilities FVTPL	0
Derivative Financial Liabilities FVTPL	0
Total	$ 0

The amount of debt securities held by the entity.

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The amount of instruments of debt securities held by the entity at fair value through other comprehensive income.

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The amount of instruments held by the entity that provide evidence of a residual interest in the assets of another entity after deducting all of its liabilities at fair value through other comprehensive income.

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The amount of short sold positions.

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The amount of financial assets classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities]

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The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]]

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