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ISSUED DEBT INSTRUMENTS AND OTHER FINANCIAL LIABILITIES (Details 9)
$ in Millions, in Millions
Dec. 31, 2018
CLP ($)
Dec. 31, 2018
CLF ( )
Dec. 31, 2017
CLP ($)
Dec. 31, 2017
CLF ( )
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] | Chile, Pesos        
Disclosure of financial liabilities [line items]        
Issued debt instruments $ 1   $ 3  
Subordinated Bonds [Member] | Unidad De Fomento (funds code) [Member]        
Disclosure of financial liabilities [line items]        
Issued debt instruments |   795,956   773,189