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Investments under Resale Agreements and Obligations under Repurchase Agreements (Details 1) - CLP ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Disclosure of fair value measurement of assets [line items] |  |
Total | $ 380,055 | $ 49,281
Chilean Central Bank And Government Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total | 379,924 | 49,149
Chilean Central Bank Bonds [Member] | Chilean Central Bank And Government Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  | 49,040
Chilean Central Bank Notes [Member] | Chilean Central Bank And Government Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Other Chilean Central Bank And Government Securities [Member] | Chilean Central Bank And Government Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total | 379,924 | 109
Instruments From Other Foreign Institutions [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Instruments From Other Foreign Institutions [Member] | Securities From Government Or Foreign Central Banks [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Other Chilean Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total | 131 | 132
Other Chilean Securities [Member] | Time Deposits In Chilean Financial Institutions [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total | 131 | 132
Trading Portfolio [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Trading Portfolio [Member] | Chilean Central Bank And Government Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Trading Portfolio [Member] | Chilean Central Bank Bonds [Member] | Chilean Central Bank And Government Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Trading Portfolio [Member] | Chilean Central Bank Notes [Member] | Chilean Central Bank And Government Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Trading Portfolio [Member] | Other Chilean Central Bank And Government Securities [Member] | Chilean Central Bank And Government Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Trading Portfolio [Member] | Instruments From Other Foreign Institutions [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Trading Portfolio [Member] | Instruments From Other Foreign Institutions [Member] | Securities From Government Or Foreign Central Banks [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Trading Portfolio [Member] | Other Chilean Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Trading Portfolio [Member] | Other Chilean Securities [Member] | Time Deposits In Chilean Financial Institutions [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Available For Sale Portfolio [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total | 379,924 | 49,281
Available For Sale Portfolio [Member] | Chilean Central Bank And Government Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total | 379,924 | 49,149
Available For Sale Portfolio [Member] | Chilean Central Bank Bonds [Member] | Chilean Central Bank And Government Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  | 49,040
Available For Sale Portfolio [Member] | Chilean Central Bank Notes [Member] | Chilean Central Bank And Government Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Available For Sale Portfolio [Member] | Other Chilean Central Bank And Government Securities [Member] | Chilean Central Bank And Government Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total | 379,924 | 109
Available For Sale Portfolio [Member] | Instruments From Other Foreign Institutions [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Available For Sale Portfolio [Member] | Instruments From Other Foreign Institutions [Member] | Securities From Government Or Foreign Central Banks [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total |  |
Available For Sale Portfolio [Member] | Other Chilean Securities [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total | 131 | 132
Available For Sale Portfolio [Member] | Other Chilean Securities [Member] | Time Deposits In Chilean Financial Institutions [Member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Total | $ 131 | $ 132

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