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DEBT INSTRUMENTS AT FAIR VALUE THROUGH OTHER COMPREHENSIVE INCOME (Details 3) - CLP ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of financial assets [line items] |  |
Available for sale investments |  | $ 2,574,546
Other Chilean Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Available for sale investments |  | 27,673
Foreign Financial Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Available for sale investments |  | 284,072
Time Deposits In Chilean Financial Institutions [Member] | Other Chilean Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Available for sale investments |  | 2,361
Mortgage Finance Bonds Of Chilean Financial Institutions [Member] | Other Chilean Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Available for sale investments |  | 22,312
Other Instruments Issued in The Country [Member] | Other Chilean Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Available for sale investments |  | 3,000
Foreign Central Banks And Government Securities [Member] | Foreign Financial Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Available for sale investments |  | 132,822
Other Foreign Financial Instruments [Member] | Foreign Financial Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Available for sale investments |  | 151,250
Chilean Central Bank And Government Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Available for sale investments |  | 2,262,801
Chilean Central Bank And Government Securities [Member] | Chilean Central Bank Bonds [Member] |  |
Disclosure of financial assets [line items] |  |
Available for sale investments |  | 816,331
Chilean Central Bank And Government Securities [Member] | Chilean Central Bank Notes [Member] |  |
Disclosure of financial assets [line items] |  |
Available for sale investments |  | 330,952
Chilean Central Bank And Government Securities [Member] | Other Chilean Central Bank And Government Securities [Member] |  |
Disclosure of financial assets [line items] |  |
Available for sale investments |  | $ 1,115,518

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- Definition The amount of non-derivative financial assets that are designated as available for sale or are not classified as (a) loans and receivables; (b) held-to-maturity investments; or (c) financial assets at fair value through profit or loss. [Refer: Derivative financial assets; Financial assets at fair value through profit or loss; Held-to-maturity investments] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 8 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_8_d&doctype=Standard&book=b -URIDate 2018-03-16 + Details
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