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LOANS AND ACCOUNTS RECEIVABLE FROM CUSTOMERS and INTERBANK LOANS (under IAS 39) (Details 12) - Non-performing Loans (collectively evaluated) [Member] $ in Millions	Dec. 31, 2017 CLP ($)
Disclosure of financial assets [line items]
Overdue loans	$ 614,774
Loans with not overdue but classified as non-performing loans	18,687
Total	633,461	[1]
Commercial Loans [Member]
Disclosure of financial assets [line items]
Overdue loans	362,968
Loans with not overdue but classified as non-performing loans	5,554
Total	368,522	[1]
Mortgage Loans [Member]
Disclosure of financial assets [line items]
Overdue loans	159,265
Loans with not overdue but classified as non-performing loans	2,503
Total	161,768	[1]
Consumer Loans [Member]
Disclosure of financial assets [line items]
Overdue loans	92,541
Loans with not overdue but classified as non-performing loans	10,630
Total	$ 103,171	[1]
[1] Non-performing loans include the aggregate unpaid principal and accrued but unpaid interest on all loans with at least one installment at least 90 days past-due.

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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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