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Risk Management (Details) - Schedule of credit quality by asset class, based on the Bank's credit rating system - CLP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
1 to 29 days [Member]    
Risk Management (Details) - Schedule of credit quality by asset class, based on the Bank's credit rating system [Line Items]    
Loans and advances to banks $ 14,454 $ 31,249
Subtotal past-due loans and advances to banks 14,454 31,249
Commercial loans 133,625 213,574
Import-export financing 5,246 9,337
Factoring transactions 16,255 32,002
Commercial lease transactions 17,889 53,756
Other loans and receivables 1,449 1,947
Residential mortgage loans 90,462 152,599
Consumer loans 136,147 221,162
Subtotal past-due loans to customers 401,073 684,377
Total 415,527 715,626
30 to 59 days [Member]    
Risk Management (Details) - Schedule of credit quality by asset class, based on the Bank's credit rating system [Line Items]    
Loans and advances to banks
Subtotal past-due loans and advances to banks
Commercial loans 29,240 54,980
Import-export financing 71 712
Factoring transactions 1,464 3,031
Commercial lease transactions 3,904 8,098
Other loans and receivables 135 259
Residential mortgage loans 24,875 73,838
Consumer loans 53,786 102,344
Subtotal past-due loans to customers 113,475 243,262
Total 113,475 243,262
60 to 89 days [Member]    
Risk Management (Details) - Schedule of credit quality by asset class, based on the Bank's credit rating system [Line Items]    
Loans and advances to banks
Subtotal past-due loans and advances to banks
Commercial loans 13,039 27,255
Import-export financing 223 1,158
Factoring transactions 157 339
Commercial lease transactions 979 4,735
Other loans and receivables 162 115
Residential mortgage loans 9,795 32,932
Consumer loans 22,764 51,976
Subtotal past-due loans to customers 47,119 118,510
Total $ 47,119 $ 118,510