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Capital Management, Corporate Governance Transparency Policy and Risk Management - Summary of Collateral and Other Credit Improvements (Detail) - ARS ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Disclosure Of Collateral And Other Credit Enhancements [line items] |  |  |
Maximum exposure to credit risk |  | $ 361,992,565 | $ 403,541,419
Total collateral | [1] | 120,488,512 | 127,507,767
Guarantees received [member] |  |  |
Disclosure Of Collateral And Other Credit Enhancements [line items] |  |  |
Maximum exposure to credit risk |  | 906,129,067 | 894,606,656
Fair value of collateral Pledges on time deposits |  | 1,356,563 | 1,205,669
Fair value of collateral Deferred payment checks |  | 17,792,609 | 9,881,685
Fair value of collateral Mortgage on real property |  | 32,710,544 | 36,220,738
Fair value of collateral Pledges on vehicles and machinery |  | 7,125,532 | 6,225,565
Fair value of collateral Pledges on personal property |  | 1,793,199 | 2,516,348
Fair value of collateral Other |  | 59,710,065 | 71,457,762
Total collateral |  | 120,488,512 | 127,507,767
Net exposure |  | 785,640,555 | 767,098,889
Associated ECL |  | 10,031,067 | 15,066,510
Guarantees received [member] | Loans and other financing [member] |  |  |
Disclosure Of Collateral And Other Credit Enhancements [line items] |  |  |
Maximum exposure to credit risk |  | 361,992,565 | 403,541,419
Fair value of collateral Pledges on time deposits |  | 1,354,231 | 1,203,699
Fair value of collateral Deferred payment checks |  | 17,792,609 | 9,881,685
Fair value of collateral Mortgage on real property |  | 32,635,395 | 36,220,738
Fair value of collateral Pledges on vehicles and machinery |  | 7,125,532 | 6,225,565
Fair value of collateral Pledges on personal property |  | 1,733,820 | 2,516,348
Fair value of collateral Other |  | 59,102,380 | 71,036,272
Total collateral |  | 119,743,967 | 127,084,307
Net exposure |  | 242,248,598 | 276,457,112
Associated ECL |  | 9,631,477 | 14,985,662
Guarantees received [member] | Other debt securities at fair value through OCI [member] |  |  |
Disclosure Of Collateral And Other Credit Enhancements [line items] |  |  |
Maximum exposure to credit risk |  | 261,934,556 | 268,683,871
Net exposure |  | 261,934,556 | 268,683,871
Associated ECL |  | 16,304 | 9,002
Guarantees received [member] | Loans commitment [Member] |  |  |
Disclosure Of Collateral And Other Credit Enhancements [line items] |  |  |
Maximum exposure to credit risk |  | 225,060,382 | 147,787,462
Fair value of collateral Pledges on time deposits |  | 2,332 | 1,970
Fair value of collateral Mortgage on real property |  | 75,149 |
Fair value of collateral Pledges on vehicles and machinery |  | 59,379 |
Fair value of collateral Other |  | 607,685 | 421,490
Total collateral |  | 744,545 | 423,460
Net exposure |  | 224,315,837 | 147,364,002
Associated ECL |  | 353,085 | 35,018
Guarantees received [member] | Other financial assets [Member] |  |  |
Disclosure Of Collateral And Other Credit Enhancements [line items] |  |  |
Maximum exposure to credit risk |  | 33,095,760 | 27,621,984
Net exposure |  | 33,095,760 | 27,621,984
Associated ECL |  | 26,448 | 28,569
Guarantees received [member] | Other debt securities at amortized cost [member] |  |  |
Disclosure Of Collateral And Other Credit Enhancements [line items] |  |  |
Maximum exposure to credit risk |  | 24,045,804 | 46,971,920
Net exposure |  | 24,045,804 | 46,971,920
Associated ECL |  | 3,753 | 8,259
Collateral held for stage3 assets [member] |  |  |
Disclosure Of Collateral And Other Credit Enhancements [line items] |  |  |
Maximum exposure to credit risk |  | 3,298,729 | 4,573,328
Fair value of collateral Deferred payment checks |  | 314,785 | 1,606
Fair value of collateral Mortgage on real property |  | 82,671 | 1,070,234
Fair value of collateral Pledges on vehicles and machinery |  | 15,125 | 1,412,147
Fair value of collateral Pledges on personal property |  | 867,419 | 98,844
Fair value of collateral Other |  | 1,280,000 | 407,668
Total collateral |  | 2,018,729 | 2,990,499
Net exposure |  | 2,643,935 | 1,582,829
Associated ECL |  |  | 2,502,785
Collateral held for stage3 assets [member] | Loans and other financing [member] |  |  |
Disclosure Of Collateral And Other Credit Enhancements [line items] |  |  |
Maximum exposure to credit risk |  | 3,298,729 | 4,573,328
Fair value of collateral Deferred payment checks |  | 314,785 | 1,606
Fair value of collateral Mortgage on real property |  | 82,671 | 1,070,234
Fair value of collateral Pledges on vehicles and machinery |  | 15,125 | 1,412,147
Fair value of collateral Pledges on personal property |  | 867,419 | 98,844
Fair value of collateral Other |  | 1,280,000 | 407,668
Total collateral |  | 2,018,729 | 2,990,499
Net exposure |  | $ 2,643,935 | 1,582,829
Associated ECL |  |  | $ 2,502,785
[1] | Related to collaterals used to secure loans transactions and other financing, under the applicable rules in force on this matter.

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