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Derivative Instruments and Accounting Hedges - CLF assets hedged (Details Textual) $ in Millions | 12 Months Ended
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Dec. 31, 2019 CLP ($) | Dec. 31, 2018 CLP ($) Segment | Dec. 31, 2017 CLP ($) Segment
Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [line items] |  |  |
Accumulated amount of unrealized gain charged to equity, before tax | $ (37,546) | $ (30,943) | $ 14,979
Cash flow hedge adjustment, net | (27,408) | (22,589) | 11,158
Cash flow in CLF | Cash Flow Hedges |  |  |
Disclosure of information about amounts that affected statement of comprehensive income as result of hedge accounting [line items] |  |  |
Accumulated amount of unrealized gain charged to equity, before tax | 37,564 | 30,943 | 14,979
Cash flow hedge adjustment, net | 27,408 | 22,589 | 11,158
Accumulated amount of unrealized gain charged to equity, after income tax | 59,391 | 31,983 | 9,394
Net effect in income of derivatives | $ 84,684 | $ 85,659 | $ 93,612
Number of hedges of net investments in foreign businesses | Segment |  | 0 | 0

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