LOANS AND ACCOUNTS RECEIVABLE FROM CUSTOMERS and INTERBANK LOANS (under IAS 39) (Details 5) - Total Impaired Portfolio [Member] $ in Millions	Dec. 31, 2017 CLP ($)
Disclosure of financial assets [line items]
Total	$ 1,803,173
SecuredDebt [Member]
Disclosure of financial assets [line items]
Total	1,030,533
UnsecuredDebt [Member]
Disclosure of financial assets [line items]
Total	772,640
Commercial Loans [Member]
Disclosure of financial assets [line items]
Total	1,013,503
Commercial Loans [Member] \| SecuredDebt [Member]
Disclosure of financial assets [line items]
Total	582,557
Commercial Loans [Member] \| UnsecuredDebt [Member]
Disclosure of financial assets [line items]
Total	430,946
Mortgage Loans [Member]
Disclosure of financial assets [line items]
Total	462,544
Mortgage Loans [Member] \| SecuredDebt [Member]
Disclosure of financial assets [line items]
Total	413,716
Mortgage Loans [Member] \| UnsecuredDebt [Member]
Disclosure of financial assets [line items]
Total	48,828
Consumer Loans [Member]
Disclosure of financial assets [line items]
Total	327,126
Consumer Loans [Member] \| SecuredDebt [Member]
Disclosure of financial assets [line items]
Total	34,260
Consumer Loans [Member] \| UnsecuredDebt [Member]
Disclosure of financial assets [line items]
Total	$ 292,866

- Definition

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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