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Fair Value of Financial Assets and Liabilities (Details 7) - CLP ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Disclosure of financial assets [line items] |  |  |
Assets | $ 8,148,608 | $ 3,100,635 | $ 2,238,647
Liability | 7,390,654 | 2,517,728 | $ 2,139,488
Financial Liabilities Derivative Contracts With Collateral Agreement Threshold Equal To Zero [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Liability | 6,748,219 | 2,133,149 |
Financial Liabilities Derivative Contracts With Non-Zero Threshold Collateral Agreement [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Liability | 517,814 | 262,683 |
Financial Liabilities Derivative Contracts Without Collateral Agreement [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Liability | 124,621 | 121,896 |
Financial Assets Derivative Contracts With Collateral Agreement Threshold Equal To Zero [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Assets | 7,478,837 | 2,639,835 |
Financial Assets Derivative Contracts With Non-Zero Threshold Collateral Agreement [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Assets | 532,298 | 344,520 |
Financial Assets Derivative Contracts Without Collateral Agreement [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Assets | $ 137,472 | $ 116,280 |

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