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Credit risk exposure and allowances - Disclosure Of Allowances (Details) - ARS ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Not credit-impaired [member] | Stage 1 [Member] | Loss allowances collectively assessed [member] | Opening balance (under IFRS 9) [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income $ 5,518,838 $ 3,566,598
Loss allowances on loan commitments and financial guarantees 729,461 588,409
Not credit-impaired [member] | Stage 1 [Member] | Loss allowances collectively assessed [member] | Transfers from Stage 1 to Stage 2 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (2,819,678) (2,620,159)
Loss allowances on loan commitments and financial guarantees (334,616) (206,816)
Not credit-impaired [member] | Stage 1 [Member] | Loss allowances collectively assessed [member] | Transfers from Stage 2 to Stage 1 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 3,223,138 1,089,664
Loss allowances on loan commitments and financial guarantees 271,538 128,864
Not credit-impaired [member] | Stage 1 [Member] | Loss allowances collectively assessed [member] | Transfers from Stage 1 or 2 to Stage 3 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (5,425,887) (54,346)
Loss allowances on loan commitments and financial guarantees (1,839) (3,936)
Not credit-impaired [member] | Stage 1 [Member] | Loss allowances collectively assessed [member] | Transfers from Stage 3 to Stage 1 or 2 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 20,402 21,601
Loss allowances on loan commitments and financial guarantees 1,938 1,896
Not credit-impaired [member] | Stage 1 [Member] | Loss allowances collectively assessed [member] | Changes without transfers between Stages [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 5,759,823 (301,453)
Loss allowances on loan commitments and financial guarantees 151,333 196,731
Not credit-impaired [member] | Stage 1 [Member] | Loss allowances collectively assessed [member] | New financial assets originated [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 15,901,370 7,588,880
Not credit-impaired [member] | Stage 1 [Member] | Loss allowances collectively assessed [member] | New Loan Commitments And Financial Guarantees Originated [Member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on loan commitments and financial guarantees 827,366 534,809
Not credit-impaired [member] | Stage 1 [Member] | Loss allowances collectively assessed [member] | Repayments [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (13,655,264) (5,796,016)
Loss allowances on loan commitments and financial guarantees (461,805) (258,652)
Not credit-impaired [member] | Stage 1 [Member] | Loss allowances collectively assessed [member] | Foreign exchange [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 452,351 486,995
Loss allowances on loan commitments and financial guarantees 30,490 5,216
Not credit-impaired [member] | Stage 1 [Member] | Loss allowances collectively assessed [member] | Gain of control over subsidiaries [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income   161,071
Not credit-impaired [member] | Stage 1 [Member] | Loss allowances collectively assessed [member] | Inflation adjustment [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (1,831,796) (1,867,269)
Loss allowances on loan commitments and financial guarantees (233,665) (257,060)
Not credit-impaired [member] | Stage 1 [Member] | Loss allowances collectively assessed [member] | Other Adjustments [Member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income   3,243,272
Not credit-impaired [member] | Stage 1 [Member] | Loss allowances collectively assessed [member] | Closing balance [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 7,143,297 5,518,838
Loss allowances on loan commitments and financial guarantees 980,201 729,461
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances collectively assessed [member] | Opening balance (under IFRS 9) [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 9,049,602 1,604,291
Loss allowances on loan commitments and financial guarantees 455,615 136,345
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances collectively assessed [member] | Transfers from Stage 1 to Stage 2 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 12,528,181 9,063,675
Loss allowances on loan commitments and financial guarantees 1,245,196 602,213
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances collectively assessed [member] | Transfers from Stage 2 to Stage 1 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (5,807,043) (2,739,576)
Loss allowances on loan commitments and financial guarantees (782,637) (282,949)
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances collectively assessed [member] | Transfers from Stage 1 or 2 to Stage 3 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (1,828,401) (2,455,000)
Loss allowances on loan commitments and financial guarantees (7,260) (11,123)
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances collectively assessed [member] | Transfers from Stage 3 to Stage 1 or 2 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 74,303 60,192
Loss allowances on loan commitments and financial guarantees 1,455 655
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances collectively assessed [member] | Changes without transfers between Stages [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (746,277) 171,322
Loss allowances on loan commitments and financial guarantees (77,704) (65,311)
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances collectively assessed [member] | New financial assets originated [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 2,549,016 217,694
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances collectively assessed [member] | New Loan Commitments And Financial Guarantees Originated [Member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on loan commitments and financial guarantees 220,711 233,085
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances collectively assessed [member] | Repayments [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (5,784,954) (1,516,057)
Loss allowances on loan commitments and financial guarantees (578,507) (86,324)
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances collectively assessed [member] | Write-offs [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income   (3)
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances collectively assessed [member] | Foreign exchange [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 571,299 174,223
Loss allowances on loan commitments and financial guarantees 10,558 2,579
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances collectively assessed [member] | Gain of control over subsidiaries [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income   1,860
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances collectively assessed [member] | Inflation adjustment [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (2,494,082) (1,056,847)
Loss allowances on loan commitments and financial guarantees (127,794) (73,555)
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances collectively assessed [member] | Other Adjustments [Member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income   5,523,828
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances collectively assessed [member] | Closing balance [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 8,111,644 9,049,602
Loss allowances on loan commitments and financial guarantees 359,633 455,615
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances individually assesed [member] | Opening balance (under IFRS 9) [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 243,784 194,203
Loss allowances on loan commitments and financial guarantees 15,286 327
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances individually assesed [member] | Transfers from Stage 1 to Stage 2 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 26,802 86,007
Loss allowances on loan commitments and financial guarantees   526
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances individually assesed [member] | Transfers from Stage 2 to Stage 1 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (4,639) (3,564)
Loss allowances on loan commitments and financial guarantees (255) (25)
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances individually assesed [member] | Transfers from Stage 1 or 2 to Stage 3 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (631,921) (337,767)
Loss allowances on loan commitments and financial guarantees (1,014) (219)
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances individually assesed [member] | Transfers from Stage 3 to Stage 1 or 2 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (1,395) 72,288
Loss allowances on loan commitments and financial guarantees 54 801
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances individually assesed [member] | Changes without transfers between Stages [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 816,969 163,344
Loss allowances on loan commitments and financial guarantees (523) 13,984
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances individually assesed [member] | New financial assets originated [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 144,135 189,306
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances individually assesed [member] | New Loan Commitments And Financial Guarantees Originated [Member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on loan commitments and financial guarantees 12,212 1,744
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances individually assesed [member] | Repayments [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (78,243) (61,021)
Loss allowances on loan commitments and financial guarantees (3,542) (275)
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances individually assesed [member] | Foreign exchange [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 81,381 30,191
Loss allowances on loan commitments and financial guarantees 1,285 306
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances individually assesed [member] | Inflation adjustment [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (196,226) (89,203)
Loss allowances on loan commitments and financial guarantees (7,393) (1,883)
Not credit-impaired [member] | Stage 2 [Member] | Loss allowances individually assesed [member] | Closing balance [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 400,647 243,784
Loss allowances on loan commitments and financial guarantees 16,110 15,286
Credit-impaired | Stage 3 [Member] | Loss allowances collectively assessed [member] | Opening balance (under IFRS 9) [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 3,831,165 2,834,364
Loss allowances on loan commitments and financial guarantees 32,691 23,447
Credit-impaired | Stage 3 [Member] | Loss allowances collectively assessed [member] | Transfers from Stage 1 or 2 to Stage 3 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 10,844,691 6,416,480
Loss allowances on loan commitments and financial guarantees 30,038 172,283
Credit-impaired | Stage 3 [Member] | Loss allowances collectively assessed [member] | Transfers from Stage 3 to Stage 1 or 2 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (1,119,654) (683,334)
Loss allowances on loan commitments and financial guarantees (42,104) (140,369)
Credit-impaired | Stage 3 [Member] | Loss allowances collectively assessed [member] | Changes without transfers between Stages [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (9,633,680) 869,794
Loss allowances on loan commitments and financial guarantees (2,846) 2,485
Credit-impaired | Stage 3 [Member] | Loss allowances collectively assessed [member] | New financial assets originated [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 12,147,304 608,390
Credit-impaired | Stage 3 [Member] | Loss allowances collectively assessed [member] | New Loan Commitments And Financial Guarantees Originated [Member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on loan commitments and financial guarantees 2,055 8,800
Credit-impaired | Stage 3 [Member] | Loss allowances collectively assessed [member] | Repayments [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (8,781,898) (1,513,532)
Loss allowances on loan commitments and financial guarantees (8,879) (22,053)
Credit-impaired | Stage 3 [Member] | Loss allowances collectively assessed [member] | Write-offs [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (3,415,408) (3,795,182)
Loss allowances on loan commitments and financial guarantees (45) (48)
Credit-impaired | Stage 3 [Member] | Loss allowances collectively assessed [member] | Foreign exchange [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 33,184 12,095
Credit-impaired | Stage 3 [Member] | Loss allowances collectively assessed [member] | Gain of control over subsidiaries [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income   155,888
Credit-impaired | Stage 3 [Member] | Loss allowances collectively assessed [member] | Inflation adjustment [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (1,445,336) (1,377,593)
Loss allowances on loan commitments and financial guarantees (3,559) (11,854)
Credit-impaired | Stage 3 [Member] | Loss allowances collectively assessed [member] | Other Adjustments [Member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income   303,795
Credit-impaired | Stage 3 [Member] | Loss allowances collectively assessed [member] | Closing balance [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 2,460,368 3,831,165
Loss allowances on loan commitments and financial guarantees 7,351 32,691
Credit-impaired | Stage 3 [Member] | Loss allowances individually assesed [member] | Opening balance (under IFRS 9) [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 4,051,588 1,248,087
Loss allowances on loan commitments and financial guarantees 207 1,914
Credit-impaired | Stage 3 [Member] | Loss allowances individually assesed [member] | Transfers from Stage 1 or 2 to Stage 3 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 1,048,133 566,057
Loss allowances on loan commitments and financial guarantees 2,539 1,125
Credit-impaired | Stage 3 [Member] | Loss allowances individually assesed [member] | Transfers from Stage 3 to Stage 1 or 2 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (38,196) (254,697)
Loss allowances on loan commitments and financial guarantees (774) (1,067)
Credit-impaired | Stage 3 [Member] | Loss allowances individually assesed [member] | Changes without transfers between Stages [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (2,635,527) 2,430,368
Loss allowances on loan commitments and financial guarantees (68) (1,095)
Credit-impaired | Stage 3 [Member] | Loss allowances individually assesed [member] | New financial assets originated [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 6,331,742 421,812
Credit-impaired | Stage 3 [Member] | Loss allowances individually assesed [member] | Repayments [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (3,348,194) (178,192)
Loss allowances on loan commitments and financial guarantees (160)  
Credit-impaired | Stage 3 [Member] | Loss allowances individually assesed [member] | Write-offs [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (3,882,490) (2,559)
Loss allowances on loan commitments and financial guarantees (128)  
Credit-impaired | Stage 3 [Member] | Loss allowances individually assesed [member] | Foreign exchange [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 711,973 720,092
Credit-impaired | Stage 3 [Member] | Loss allowances individually assesed [member] | Inflation adjustment [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (680,822) (899,380)
Loss allowances on loan commitments and financial guarantees (317) (670)
Credit-impaired | Stage 3 [Member] | Loss allowances individually assesed [member] | Closing balance [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 1,558,207 4,051,588
Loss allowances on loan commitments and financial guarantees 1,299 207
Total credit impaired [member] | Opening balance (under IFRS 9) [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 22,694,977 9,447,543
Loss allowances on loan commitments and financial guarantees 1,233,260 750,442
Total credit impaired [member] | Transfers from Stage 1 to Stage 2 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 9,735,305 6,529,523
Loss allowances on loan commitments and financial guarantees 910,580 395,923
Total credit impaired [member] | Transfers from Stage 2 to Stage 1 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (2,588,544) (1,653,476)
Loss allowances on loan commitments and financial guarantees (511,354) (154,110)
Total credit impaired [member] | Transfers from Stage 1 or 2 to Stage 3 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 4,006,615 4,135,424
Loss allowances on loan commitments and financial guarantees 22,464 158,130
Total credit impaired [member] | Transfers from Stage 3 to Stage 1 or 2 [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (1,064,540) (783,950)
Loss allowances on loan commitments and financial guarantees (39,431) (138,084)
Total credit impaired [member] | Changes without transfers between Stages [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (6,438,692) 3,333,375
Loss allowances on loan commitments and financial guarantees 70,192 146,794
Total credit impaired [member] | New financial assets originated [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 37,073,567 9,026,082
Total credit impaired [member] | New Loan Commitments And Financial Guarantees Originated [Member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on loan commitments and financial guarantees 1,062,344 778,438
Total credit impaired [member] | Repayments [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (31,648,553) (9,064,818)
Loss allowances on loan commitments and financial guarantees (1,052,893) (367,304)
Total credit impaired [member] | Write-offs [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (7,297,898) (3,797,744)
Loss allowances on loan commitments and financial guarantees (173) (48)
Total credit impaired [member] | Foreign exchange [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 1,850,188 1,423,596
Loss allowances on loan commitments and financial guarantees 42,333 8,101
Total credit impaired [member] | Gain of control over subsidiaries [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income   318,819
Total credit impaired [member] | Inflation adjustment [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income (6,648,262) (5,290,292)
Loss allowances on loan commitments and financial guarantees (372,728) (345,022)
Total credit impaired [member] | Other Adjustments [Member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income   9,070,895
Total credit impaired [member] | Closing balance [member]    
Disclosure of impairment loss and reversal of impairment loss [line items]    
Loss allowances on financial assets at amortised cost and at fair value through other comprehensive income 19,674,163 22,694,977
Loss allowances on loan commitments and financial guarantees $ 1,364,594 $ 1,233,260