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Loans to Customers at Amortized Cost (Details) - Schedule of sale or transfer of loan portfolio - CLP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Loans to Customers at Amortized Cost (Details) - Schedule of sale or transfer of loan portfolio [Line Items]      
Carrying amount $ 43,957 $ 12,420 $ 22,567
Allowances released (107) (958)
Sale price 43,889 12,420 21,876
Effect on income (loss) gain [1] 39 267
Sale of Outstanding Loans [Member]      
Loans to Customers at Amortized Cost (Details) - Schedule of sale or transfer of loan portfolio [Line Items]      
Carrying amount 43,957 12,420 22,567
Allowances released (107) (958)
Sale price 43,889 12,420 21,876
Effect on income (loss) gain [1] 39 267
Sale of Write Off Loans [Member]      
Loans to Customers at Amortized Cost (Details) - Schedule of sale or transfer of loan portfolio [Line Items]      
Carrying amount
Allowances released
Sale price
Effect on income (loss) gain [1]
[1] See Note No. 31