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Expected Credit Losses Allowance (Details 1) - CLP ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of financial assets [line items] |  |  |
Charged-off individually significant loans |  |  | $ 51,978
Total provisions and charge-offs |  |  | (36,279)
Provisions released | $ (207,693) | $ (210,781) | (55,018)
Net charge offs of individually significant loans |  |  | 15,699
Personnel Salaries And Expenses [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Provisions released |  |  |
Mandatory Dividends [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Provisions released |  |  |
Contingencies [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Provisions released |  |  | (46,357)
Loans to Customers [Member] | Provisions for Loan Losses [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Charged-off individually significant loans |  |  | (15,699)
Provisions established |  |  | (516,646)
Total provisions and charge-offs |  |  | (532,345)
Provisions released |  |  | 146,563
Recovery of loans previously charged off |  |  | 83,527
Net charge offs of individually significant loans |  |  | (302,255)
Loans to Customers [Member] | Commercial Loans [Member] | Provisions for Loan Losses [Member] | Group Allowance [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Charged-off individually significant loans |  |  |
Provisions established |  |  | (148,681)
Total provisions and charge-offs |  |  | (148,681)
Provisions released |  |  | 20,491
Recovery of loans previously charged off |  |  | 21,499
Net charge offs of individually significant loans |  |  | (106,691)
Loans to Customers [Member] | Commercial Loans [Member] | Provisions for Loan Losses [Member] | Individual Allowance [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Charged-off individually significant loans |  |  | (15,699)
Provisions established |  |  | (64,658)
Total provisions and charge-offs |  |  | (80,357)
Provisions released |  |  | 55,925
Recovery of loans previously charged off |  |  | 11,114
Net charge offs of individually significant loans |  |  | (13,318)
Loans to Customers [Member] | Mortgage Loans [Member] | Provisions for Loan Losses [Member] | Group Allowance [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Charged-off individually significant loans |  |  |
Provisions established |  |  | (43,621)
Total provisions and charge-offs |  |  | (43,621)
Provisions released |  |  | 11,427
Recovery of loans previously charged off |  |  | 10,942
Net charge offs of individually significant loans |  |  | (21,252)
Loans to Customers [Member] | Consumer Loans [Member] | Provisions for Loan Losses [Member] | Group Allowance [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Charged-off individually significant loans |  |  |
Provisions established |  |  | (252,038)
Total provisions and charge-offs |  |  | (252,038)
Provisions released |  |  | 46,089
Recovery of loans previously charged off |  |  | 39,972
Net charge offs of individually significant loans |  |  | (165,977)
Loans to Customers [Member] | Contingent Loan [Member] | Provisions for Loan Losses [Member] | Group Allowance [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Charged-off individually significant loans |  |  |
Provisions established |  |  | (4,224)
Total provisions and charge-offs |  |  | (4,224)
Provisions released |  |  | 1,660
Recovery of loans previously charged off |  |  |
Net charge offs of individually significant loans |  |  | (2,564)
Loans to Customers [Member] | Contingent Loan [Member] | Provisions for Loan Losses [Member] | Individual Allowance [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Charged-off individually significant loans |  |  |
Provisions established |  |  | (3,117)
Total provisions and charge-offs |  |  | (3,117)
Provisions released |  |  | 7,001
Recovery of loans previously charged off |  |  |
Net charge offs of individually significant loans |  |  | 3,884
Loans to Customers [Member] | Interbank Loan [Member] | Provisions for Loan Losses [Member] | Individual Allowance [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Charged-off individually significant loans |  |  |
Provisions established |  |  | (307)
Total provisions and charge-offs |  |  | (307)
Provisions released |  |  | 3,970
Recovery of loans previously charged off |  |  |
Net charge offs of individually significant loans |  |  | $ 3,663

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