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ISSUED DEBT INSTRUMENTS AND OTHER FINANCIAL LIABILITIES (Details 10) - CLP ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Disclosure of financial liabilities [line items]    
Issued debt instruments $ 8,115,233 $ 7,093,653
Subordinated Bonds [Member]    
Disclosure of financial liabilities [line items]    
Issued debt instruments 795,957 773,192
Subordinated Bonds [Member] | Due Within 1 Year [Member]    
Disclosure of financial liabilities [line items]    
Issued debt instruments 1 3
Subordinated Bonds [Member] | Due After 1 Year But Within 2 Years [Member]    
Disclosure of financial liabilities [line items]    
Issued debt instruments
Subordinated Bonds [Member] | Due After 2 Years But Within 3 years [Member]    
Disclosure of financial liabilities [line items]    
Issued debt instruments
Subordinated Bonds [Member] | Due After 3 Years But Within 4 Years [Member]    
Disclosure of financial liabilities [line items]    
Issued debt instruments
Subordinated Bonds [Member] | Due After 4 Years But Within 5 Years [Member]    
Disclosure of financial liabilities [line items]    
Issued debt instruments
Subordinated Bonds [Member] | Due After 5 Years [Member]    
Disclosure of financial liabilities [line items]    
Issued debt instruments $ 795,956 $ 773,189