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Financial Assets Held for Trading (Details) - CLP ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Disclosure of fair value measurement of assets [line items] |  |
Total | $ 270,204 | $ 77,041
Other Chilean Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Other Chilean Securities [Member] | Time Deposits In Chilean Financial Institutions [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Other Chilean Securities [Member] | Mortgage Finance Bonds Of Chilean Financial Institutions [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Other Chilean Securities [Member] | Chilean Financial Institution Bonds [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Other Chilean Securities [Member] | Chilean Corporate Bonds [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Other Chilean Securities [Member] | OthersChileanSecuritiesMember |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Foreign Financial Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  | 5,883
Foreign Financial Securities [Member] | Foreign Central Banks And Government Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Foreign Financial Securities [Member] | Other Foreign Financial Instruments [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  | 5,883
Investments In Mutual Funds [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Investments In Mutual Funds [Member] | Funds Managed By Related Entities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Investments In Mutual Funds [Member] | Funds Managed By Others [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Chilean Central Bank And Government Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total | 270,204 | 71,158
Chilean Central Bank And Government Securities [Member] | Chilean Central Bank Bonds [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total | 1,952 | 22,947
Chilean Central Bank And Government Securities [Member] | Chilean Central Bank Notes [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Chilean Central Bank And Government Securities [Member] | Other Chilean Central Bank And Government Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total | $ 268,252 | $ 48,211

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