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Provisions - Maximum exposure to credit risk - Confirmed foreign letters of credit (Details) - Confirmed foreign letters of credit - CLP ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Contingencies and Commitments |  |
Maximum exposure to credit risk | $ 56,764 | $ 64,970
Normal |  |
Contingencies and Commitments |  |
Maximum exposure to credit risk | 56,764 | $ 64,970
12-month expected credit losses | Financial instruments not credit-impaired | Individual |  |
Contingencies and Commitments |  |
Maximum exposure to credit risk | 56,764 |
12-month expected credit losses | Financial instruments not credit-impaired | Individual | Normal |  |
Contingencies and Commitments |  |
Maximum exposure to credit risk | $ 56,764 |

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