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RISK MANAGEMENT (Details 11) - CLP ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance | $ 723 | $ 1,440
Credit Risk [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance | 882,414 | $ 791,157
Total ECL Allowance percentage % |  | 100.00%
Credit Risk [Member] | Collectively Assessed [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | $ 30,213,414 | $ 27,725,914
Financial assets percentage % | 100.00% | 100.00%
Total ECL Allowance | $ 882,414 |
Total ECL Allowance percentage % | 100.00% |
Credit Risk [Member] | Commerical Loans [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets |  | $ 219,262
Financial assets percentage % |  | 27.73%
Total ECL Allowance |  | $ 219,073
Total ECL Allowance percentage % |  | 27.69%
Credit Risk [Member] | Commerical Loans [Member] | Normal Portfolio [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 58,728
Total ECL Allowance percentage % |  | 7.42%
Credit Risk [Member] | Commerical Loans [Member] | Impaired Portfolio [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 160,345
Total ECL Allowance percentage % |  | 20.27%
Credit Risk [Member] | Commerical Loans [Member] | A1 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 827
Total ECL Allowance percentage % |  | 0.10%
Credit Risk [Member] | Commerical Loans [Member] | A2 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 18,514
Total ECL Allowance percentage % |  | 2.34%
Credit Risk [Member] | Commerical Loans [Member] | A3 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 27,894
Total ECL Allowance percentage % |  | 3.53%
Credit Risk [Member] | Commerical Loans [Member] | B [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 32,089
Total ECL Allowance percentage % |  | 4.06%
Credit Risk [Member] | Commerical Loans [Member] | C1 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 2,604
Total ECL Allowance percentage % |  | 0.33%
Credit Risk [Member] | Commerical Loans [Member] | C2 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 5,104
Total ECL Allowance percentage % |  | 0.65%
Credit Risk [Member] | Commerical Loans [Member] | C3 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 8,935
Total ECL Allowance percentage % |  | 1.13%
Credit Risk [Member] | Commerical Loans [Member] | C4 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 19,120
Total ECL Allowance percentage % |  | 2.42%
Credit Risk [Member] | Commerical Loans [Member] | D1 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 41,941
Total ECL Allowance percentage % |  | 5.30%
Credit Risk [Member] | Commerical Loans [Member] | D2 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 62,234
Total ECL Allowance percentage % |  | 7.87%
Credit Risk [Member] | Commerical Loans [Member] | Individual [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | $ 10,950,549 | $ 10,168,164
Financial assets percentage % | 36.24% | 36.67%
Total ECL Allowance | $ 259,370 |
Total ECL Allowance percentage % | 29.39% |
Credit Risk [Member] | Commerical Loans [Member] | Individual [Member] | A1 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | $ 29,998 | $ 1,051,072
Financial assets percentage % | 0.10% | 3.79%
Total ECL Allowance | $ 2 |
Total ECL Allowance percentage % | 0.00% |
Credit Risk [Member] | Commerical Loans [Member] | Individual [Member] | A2 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | $ 1,074,789 | $ 5,957,305
Financial assets percentage % | 3.56% | 21.49%
Total ECL Allowance | $ 525 |
Total ECL Allowance percentage % | 0.06% |
Credit Risk [Member] | Commerical Loans [Member] | Individual [Member] | A3 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | $ 2,699,993 | $ 2,176,779
Financial assets percentage % | 8.94% | 7.85%
Total ECL Allowance | $ 2,574 |
Total ECL Allowance percentage % | 0.29% |
Credit Risk [Member] | Commerical Loans [Member] | Individual [Member] | B [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets |  | $ 539,074
Financial assets percentage % |  | 1.94%
Credit Risk [Member] | Commerical Loans [Member] | Individual [Member] | C1 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | $ 154,708 | $ 145,033
Financial assets percentage % | 0.51% | 0.52%
Total ECL Allowance | $ 50,695 |
Total ECL Allowance percentage % | 5.75% |
Credit Risk [Member] | Commerical Loans [Member] | Individual [Member] | C2 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | $ 54,924 | $ 56,871
Financial assets percentage % | 0.18% | 0.21%
Total ECL Allowance | $ 19,672 |
Total ECL Allowance percentage % | 2.20% |
Credit Risk [Member] | Commerical Loans [Member] | Individual [Member] | C3 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | $ 45,859 | $ 39,825
Financial assets percentage % | 0.15% | 0.14%
Total ECL Allowance | $ 11,297 |
Total ECL Allowance percentage % | 1.31% |
Credit Risk [Member] | Commerical Loans [Member] | Individual [Member] | C4 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | $ 36,005 | $ 53,261
Financial assets percentage % | 0.12% | 0.19%
Total ECL Allowance | $ 17,323 |
Total ECL Allowance percentage % | 1.96% |
Credit Risk [Member] | Commerical Loans [Member] | Individual [Member] | D1 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets |  | $ 71,896
Financial assets percentage % |  | 0.26%
Credit Risk [Member] | Commerical Loans [Member] | Individual [Member] | D2 [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets |  | $ 77,048
Financial assets percentage % |  | 0.28%
Credit Risk [Member] | Commerical Loans [Member] | Collectively Assessed [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | $ 4,235,595 | $ 3,903,163
Financial assets percentage % | 14.02% | 14.08%
Total ECL Allowance | $ 247,432 |
Total ECL Allowance percentage % | 28.04% |
Credit Risk [Member] | Commerical Loans [Member] | Collectively Assessed [Member] | Normal Portfolio [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets |  | $ 3,488,633
Financial assets percentage % |  | 12.58%
Credit Risk [Member] | Commerical Loans [Member] | Collectively Assessed [Member] | Impaired Portfolio [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets |  | $ 414,530
Financial assets percentage % |  | 1.50%
Credit Risk [Member] | Residential Mortgage Loans [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 69,066
Total ECL Allowance percentage % |  | 8.72%
Credit Risk [Member] | Residential Mortgage Loans [Member] | Normal Portfolio [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 20,174
Total ECL Allowance percentage % |  | 2.55%
Credit Risk [Member] | Residential Mortgage Loans [Member] | Impaired Portfolio [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 48,892
Total ECL Allowance percentage % |  | 6.17%
Credit Risk [Member] | Residential Mortgage Loans [Member] | Collectively Assessed [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | $ 4,876,289 | $ 9,096,895
Financial assets percentage % | 16.14% | 32.81%
Total ECL Allowance | $ 284,342 |
Total ECL Allowance percentage % | 32.23% |
Credit Risk [Member] | Residential Mortgage Loans [Member] | Collectively Assessed [Member] | Normal Portfolio [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets |  | $ 8,634,351
Financial assets percentage % |  | 31.14%
Credit Risk [Member] | Residential Mortgage Loans [Member] | Collectively Assessed [Member] | Impaired Portfolio [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets |  | $ 462,544
Financial assets percentage % |  | 1.67%
Credit Risk [Member] | Consumer Loans [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 283,756
Total ECL Allowance percentage % |  | 35.86%
Credit Risk [Member] | Consumer Loans [Member] | Normal Portfolio [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 114,099
Total ECL Allowance percentage % |  | 14.42%
Credit Risk [Member] | Consumer Loans [Member] | Impaired Portfolio [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total ECL Allowance |  | $ 169,657
Total ECL Allowance percentage % |  | 21.44%
Credit Risk [Member] | Consumer Loans [Member] | Collectively Assessed [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | $ 10,150,981 | $ 4,557,692
Financial assets percentage % | 33.60% | 16.44%
Total ECL Allowance | $ 91,270 |
Total ECL Allowance percentage % | 10.34% |
Credit Risk [Member] | Consumer Loans [Member] | Collectively Assessed [Member] | Normal Portfolio [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets |  | $ 4,230,567
Financial assets percentage % |  | 15.26%
Credit Risk [Member] | Consumer Loans [Member] | Collectively Assessed [Member] | Impaired Portfolio [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets |  | $ 327,125
Financial assets percentage % |  | 1.18%

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