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Summary of Significant Accounting Policies (Details)
$ in Thousands, $ in Millions
 12 Months Ended
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%