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RISK MANAGEMENT (Details 19) - Liquidity Risk [Member] - Other Commercial Commitments [Member] - CLP ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of financial liabilities [line items] |  |
Financial liabilities | $ 2,638,286 | $ 2,182,569
Not Later Than One Month [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 702,081 | 559,586
Later Than One Month And Not Later Than Three Months [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 371,475 | 407,158
More Than 3 Months To 1 Year [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 1,034,383 | 946,624
Between 1 and 5 Years [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 226,962 | 247,941
Due After 5 Years [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 33,385 | 21,260
Performance Guarantees [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 1,954,205 | 1,823,793
Performance Guarantees [Member] | Not Later Than One Month [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 663,642 | 514,510
Performance Guarantees [Member] | Later Than One Month And Not Later Than Three Months [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 188,147 | 244,543
Performance Guarantees [Member] | More Than 3 Months To 1 Year [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 905,554 | 835,030
Performance Guarantees [Member] | Between 1 and 5 Years [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 163,506 | 208,479
Performance Guarantees [Member] | Due After 5 Years [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 33,356 | 21,231
Foreign Letters Of Credit Confirmed [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 57,038 | 75,499
Foreign Letters Of Credit Confirmed [Member] | Not Later Than One Month [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 3,842 | 16,681
Foreign Letters Of Credit Confirmed [Member] | Later Than One Month And Not Later Than Three Months [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 9,128 | 33,513
Foreign Letters Of Credit Confirmed [Member] | More Than 3 Months To 1 Year [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 33,177 | 21,277
Foreign Letters Of Credit Confirmed [Member] | Between 1 and 5 Years [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 10,891 | 4,028
Foreign Letters Of Credit Confirmed [Member] | Due After 5 Years [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities |  |
Letters Of Credit Issued [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 223,420 | 201,699
Letters Of Credit Issued [Member] | Not Later Than One Month [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 12,469 | 12,367
Letters Of Credit Issued [Member] | Later Than One Month And Not Later Than Three Months [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 110,970 | 115,720
Letters Of Credit Issued [Member] | More Than 3 Months To 1 Year [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 54,015 | 43,029
Letters Of Credit Issued [Member] | Between 1 and 5 Years [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 45,937 | 30,554
Letters Of Credit Issued [Member] | Due After 5 Years [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 29 | 29
Pledges And Other Commercial Commitments [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 133,623 | 81,578
Pledges And Other Commercial Commitments [Member] | Not Later Than One Month [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 22,128 | 16,028
Pledges And Other Commercial Commitments [Member] | Later Than One Month And Not Later Than Three Months [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 63,230 | 13,382
Pledges And Other Commercial Commitments [Member] | More Than 3 Months To 1 Year [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 41,637 | 47,288
Pledges And Other Commercial Commitments [Member] | Between 1 and 5 Years [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities | 6,628 | 4,880
Pledges And Other Commercial Commitments [Member] | Due After 5 Years [Member] |  |
Disclosure of financial liabilities [line items] |  |
Financial liabilities |  |

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- Definition The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) 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 deliver 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, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are 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. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_25&doctype=Standard -URIDate 2018-03-16 + Details
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