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Loans to Customers at Amortized Cost (Details)
$ in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2020
CLP ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
CLP ($)
Loans to Customers at Amortized Cost (Details) [Line Items]      
Loans to customers $ 30,101,583 $ 42,283,443 $ 29,384,039
Commercial loan guarantee obligations 2,021,688    
Total over due portfolio $ 4,625   7,295
Minimum [Member]      
Loans to Customers at Amortized Cost (Details) [Line Items]      
Average life 2 years    
Maximum [Member]      
Loans to Customers at Amortized Cost (Details) [Line Items]      
Average life 15 years    
Finance Lease For Real Estate [Member]      
Loans to Customers at Amortized Cost (Details) [Line Items]      
Loans to customers $ 803,238   779,682
Finance Lease For Other Assets [Member]      
Loans to Customers at Amortized Cost (Details) [Line Items]      
Loans to customers $ 789,969   $ 840,159