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LOANS AND ACCOUNTS RECEIVABLE FROM CUSTOMERS and INTERBANK LOANS (under IAS 39) (Details 2)
$ in Millions
Dec. 31, 2017
CLP ($)
Disclosure of financial assets [line items]  
Balance as of beginning $ 4,135
Provisions established 307
Provisions released (3,970)
Total 472
Domestic Loans [Member]  
Disclosure of financial assets [line items]  
Balance as of beginning
Provisions established 251
Provisions released (251)
Total
Foreign Interbank Loans [Member]  
Disclosure of financial assets [line items]  
Balance as of beginning 4,135
Provisions established 56
Provisions released (3,719)
Total $ 472