Fair Value Quantitative and Qualitative Disclosures - Summary of Valuation Techniques and Significant Unobservable Inputs Used in the Valuation (Detail) - Discounted cash flow [member] $ in Thousands	12 Months Ended
Dec. 31, 2020 ARS ($)	Dec. 31, 2019 ARS ($)
Debt securities of financial trusts [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value of Level 3 Assets		$ 259,482
Valuation technique		Income approach (discounted cash flow)
Significant unobservable inputs		Discount rate in pesos
Debt securities of financial trusts provisional [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Fair value of Level 3 Assets	$ 376,090	$ 847,773
Valuation technique	Income approach (discounted cash flow)	Income approach (discounted cash flow)
Significant unobservable inputs	Discount rate in pesos	Discount rate in pesos
Minimum Average Term [member] \| Debt securities of financial trusts [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Off range of inputs high		48.50
Minimum Average Term [member] \| Debt securities of financial trusts provisional [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Off range of inputs high	43.84	39.27
Maximum Average Term [member] \| Debt securities of financial trusts [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Off range of inputs high		74.06
Maximum Average Term [member] \| Debt securities of financial trusts provisional [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Off range of inputs high	47.60	44.97

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Fair value of level 3 assets.

+ References

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- Definition

The description of the valuation techniques (for example, the market approach, cost approach and income approach) used for the fair value measurement of assets. [Refer: Valuation techniques [member]; Cost approach [member]; Income approach [member]; Market approach [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2020-01-01
-Paragraph 93
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2020-en-r&anchor=para_93_d&doctype=Standard
-URIDate 2020-01-01

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The value of significant unobservable input used in the measurement of the fair value of assets.

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