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INVESTMENTS UNDER RESALE AGREEMENTS AND OBLIGATIONS UNDER REPURCHASE AGREEMENTS (Details 2) - CLP ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Disclosure of fair value measurement of assets [line items]
Total	$ 49,281	$ 268,061
Other Chilean Securities [Member]
Disclosure of fair value measurement of assets [line items]
Total	132	1,156
Other Foreign Chilean Securities [Member]
Disclosure of fair value measurement of assets [line items]
Total		24,910
Available For Sale Portfolio [Member]
Disclosure of fair value measurement of assets [line items]
Total	49,281	268,061
Available For Sale Portfolio [Member] | Other Chilean Securities [Member]
Disclosure of fair value measurement of assets [line items]
Total	132	1,156
Available For Sale Portfolio [Member] | Other Foreign Chilean Securities [Member]
Disclosure of fair value measurement of assets [line items]
Total		24,910
Trading Portfolio [Member]
Disclosure of fair value measurement of assets [line items]
Total
Trading Portfolio [Member] | Other Chilean Securities [Member]
Disclosure of fair value measurement of assets [line items]
Total
Trading Portfolio [Member] | Other Foreign Chilean Securities [Member]
Disclosure of fair value measurement of assets [line items]
Total
Time Deposits In Chilean Financial Institutions [Member] | Other Chilean Securities [Member]
Disclosure of fair value measurement of assets [line items]
Total	132	1,156
Time Deposits In Chilean Financial Institutions [Member] | Available For Sale Portfolio [Member] | Other Chilean Securities [Member]
Disclosure of fair value measurement of assets [line items]
Total	132	1,156
Time Deposits In Chilean Financial Institutions [Member] | Trading Portfolio [Member] | Other Chilean Securities [Member]
Disclosure of fair value measurement of assets [line items]
Total
Securities From Government Or Foreign Central Banks [Member] | Other Foreign Chilean Securities [Member]
Disclosure of fair value measurement of assets [line items]
Total		24,910
Securities From Government Or Foreign Central Banks [Member] | Available For Sale Portfolio [Member] | Other Foreign Chilean Securities [Member]
Disclosure of fair value measurement of assets [line items]
Total		24,910
Securities From Government Or Foreign Central Banks [Member] | Trading Portfolio [Member] | Other Foreign Chilean Securities [Member]
Disclosure of fair value measurement of assets [line items]
Total
Chilean Central Bank And Government Securities [Member]
Disclosure of fair value measurement of assets [line items]
Total	49,149	241,995
Chilean Central Bank And Government Securities [Member] | Available For Sale Portfolio [Member]
Disclosure of fair value measurement of assets [line items]
Total	49,149	241,995
Chilean Central Bank And Government Securities [Member] | Trading Portfolio [Member]
Disclosure of fair value measurement of assets [line items]
Total
Chilean Central Bank And Government Securities [Member] | Chilean Central Bank Bonds [Member]
Disclosure of fair value measurement of assets [line items]
Total	49,040
Chilean Central Bank And Government Securities [Member] | Chilean Central Bank Bonds [Member] | Available For Sale Portfolio [Member]
Disclosure of fair value measurement of assets [line items]
Total	49,040
Chilean Central Bank And Government Securities [Member] | Chilean Central Bank Bonds [Member] | Trading Portfolio [Member]
Disclosure of fair value measurement of assets [line items]
Total
Chilean Central Bank And Government Securities [Member] | Chilean Central Bank Notes [Member]
Disclosure of fair value measurement of assets [line items]
Total
Chilean Central Bank And Government Securities [Member] | Chilean Central Bank Notes [Member] | Available For Sale Portfolio [Member]
Disclosure of fair value measurement of assets [line items]
Total
Chilean Central Bank And Government Securities [Member] | Chilean Central Bank Notes [Member] | Trading Portfolio [Member]
Disclosure of fair value measurement of assets [line items]
Total
Chilean Central Bank And Government Securities [Member] | Other Chilean Central Bank And Government Securities [Member]
Disclosure of fair value measurement of assets [line items]
Total	109	241,995
Chilean Central Bank And Government Securities [Member] | Other Chilean Central Bank And Government Securities [Member] | Available For Sale Portfolio [Member]
Disclosure of fair value measurement of assets [line items]
Total	109	241,995
Chilean Central Bank And Government Securities [Member] | Other Chilean Central Bank And Government Securities [Member] | Trading Portfolio [Member]
Disclosure of fair value measurement of assets [line items]
Total

X

- Definition

The fair value of collateral sold or repledged that was permitted to be sold or repledged in the absence of default by the owner of the collateral. [Refer: At fair value [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2018-01-01
-Paragraph 15
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_15_b&doctype=Standard
-URIDate 2018-03-16

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- Definition

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+ References

No definition available.

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