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Summary of Significant Accounting Policies (Details) $ in Thousands, $ in Millions | 12 Months Ended
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Dec. 31, 2020 CLP ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 CLP ($) | Dec. 31, 2018 CLP ($)
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Foreign exchange rate | 1 | 1 |  |
Gain on net foreign exchange income (in Pesos) | $ 156,662 | $ 220,062 | $ 30,886 | $ 2,701
Estimated useful life | 6 years | 6 years |  |
Threshold retiring period for specified employees to whom payments are made | 30 years | 30 years |  |
Discount rate for long term | 2.31% | 2.31% | 3.17% |
Bottom of range [member] |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Voting rights | 20.00% | 20.00% |  |
Top of range [member] |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Voting rights | 50.00% | 50.00% |  |
United States of America, Dollars |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Foreign exchange rate | 711.90 | 711.90 | 751.88 |
JPY [Member] |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Foreign exchange rate | 6.89 | 6.89 | 6.91 |
EUR [Member] |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Foreign exchange rate | 874.28 | 874.28 | 843.31 |
Staff Severance Indemnities Plan [Member] |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Discount rate for long term | 2.31% | 2.31% | 3.17% |

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