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Loans to Customers at Amortized Cost (Details Textual) - CLP ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Statement Line Items [Line Items]    
Nominal value of loans acquired $ 36,919
Total over due portfolio 7,295 6,344
Loans to customers 29,384,039 27,341,254
Finance Lease For Real Estate [Member]    
Statement Line Items [Line Items]    
Loans to customers 779,682 758,970
Finance Lease For Other Assets [Member]    
Statement Line Items [Line Items]    
Loans to customers $ 840,159 $ 813,038
Minimum [Member]    
Statement Line Items [Line Items]    
Average life (in years) 2 years  
Maximum [Member]    
Statement Line Items [Line Items]    
Average life (in years) 15 years