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RISK MANAGEMENT (Details 11) - CLP ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
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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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities]

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