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LOANS AND OTHER FINANCING - Composition of loan portfolio (Details) - ARS ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
LOANS AND OTHER FINANCING |  |
Total | $ 88,010,011 | $ 118,771,635
Loans and other financing [member] |  |
LOANS AND OTHER FINANCING |  |
Allowance for loan losses | (6,751,939) | (7,593,590)
Promissory Notes [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 8,514,717 | 12,142,239
Unsecured corporate loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 11,106,189 | 11,959,454
Overdrafts [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 5,598,311 | 8,165,893
Mortgages [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 7,917,020 | 8,594,378
Automobile and other secured loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 1,219,936 | 2,388,308
Personal loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 16,295,241 | 30,731,905
Credit card loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 12,953,381 | 14,196,839
Foreign Trade Loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 18,150,746 | 21,187,587
Other financings [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 7,912,677 | 9,570,708
Other receivables from financial transactions [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 1,907,043 | 2,090,749
Receivables from financial leases [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 3,186,689 | 5,337,165
Sub Total [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 94,761,950 | 126,365,225
Stage 1 [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 82,051,797 | 106,563,554
Stage 1 [member] | Loans and other financing [member] |  |
LOANS AND OTHER FINANCING |  |
Allowance for loan losses | (1,605,160) | (2,212,268)
Stage 1 [member] | Promissory Notes [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 8,009,641 | 11,040,711
Stage 1 [member] | Unsecured corporate loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 9,974,477 | 9,566,113
Stage 1 [member] | Overdrafts [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 4,339,933 | 6,888,246
Stage 1 [member] | Mortgages [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 6,030,357 | 8,362,500
Stage 1 [member] | Automobile and other secured loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 799,642 | 1,945,195
Stage 1 [member] | Personal loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 14,047,805 | 24,712,374
Stage 1 [member] | Credit card loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 11,850,570 | 12,498,927
Stage 1 [member] | Foreign Trade Loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 16,198,790 | 18,771,657
Stage 1 [member] | Other financings [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 7,742,824 | 8,008,012
Stage 1 [member] | Other receivables from financial transactions [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 1,844,597 | 2,039,401
Stage 1 [member] | Receivables from financial leases [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 2,818,321 | 4,942,686
Stage 1 [member] | Sub Total [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 83,656,957 | 108,775,822
Stage 2 [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 3,819,358 | 9,388,713
Stage 2 [member] | Loans and other financing [member] |  |
LOANS AND OTHER FINANCING |  |
Allowance for loan losses | (838,710) | (1,762,950)
Stage 2 [member] | Promissory Notes [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 220,628 | 728,667
Stage 2 [member] | Unsecured corporate loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 363,545 | 2,115,729
Stage 2 [member] | Overdrafts [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 88,118 | 1,096,622
Stage 2 [member] | Mortgages [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 1,139,227 | 216,941
Stage 2 [member] | Automobile and other secured loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 260,651 | 163,435
Stage 2 [member] | Personal loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 1,115,171 | 3,388,932
Stage 2 [member] | Credit card loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 560,447 | 916,400
Stage 2 [member] | Foreign Trade Loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 615,514 | 854,199
Stage 2 [member] | Other financings [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 93,942 | 1,386,762
Stage 2 [member] | Other receivables from financial transactions [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 16,506 | 18,592
Stage 2 [member] | Receivables from financial leases [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 184,319 | 265,384
Stage 2 [member] | Sub Total [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 4,658,068 | 11,151,663
Stage 3 [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 2,138,856 | 2,819,368
Stage 3 [member] | Loans and other financing [member] |  |
LOANS AND OTHER FINANCING |  |
Allowance for loan losses | (4,308,069) | (3,618,372)
Stage 3 [member] | Promissory Notes [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 284,448 | 372,861
Stage 3 [member] | Unsecured corporate loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 768,167 | 277,612
Stage 3 [member] | Overdrafts [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 1,170,260 | 181,025
Stage 3 [member] | Mortgages [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 747,436 | 14,937
Stage 3 [member] | Automobile and other secured loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 159,643 | 279,678
Stage 3 [member] | Personal loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 1,132,265 | 2,630,599
Stage 3 [member] | Credit card loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 542,364 | 781,512
Stage 3 [member] | Foreign Trade Loans [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 1,336,442 | 1,561,731
Stage 3 [member] | Other financings [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 75,911 | 175,934
Stage 3 [member] | Other receivables from financial transactions [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 45,940 | 32,756
Stage 3 [member] | Receivables from financial leases [member] |  |
LOANS AND OTHER FINANCING |  |
Total | 184,049 | 129,095
Stage 3 [member] | Sub Total [member] |  |
LOANS AND OTHER FINANCING |  |
Total | $ 6,446,925 | $ 6,437,740

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