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Employee Benefits (Details 5)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
CHILE    
Disclosure Of Employee Benefits [Line Items]    
Actuarial assumption of discount rates 4.41% 4.50%
Actuarial assumption of voluntary employee turnover rate 1.90% 1.90%
Actuarial assumption of rotation rate 5.30% 5.30%
Actuarial assumption of expected rates of salary increases 3.70% 3.70%
CHILE | Officers [Member]    
Disclosure Of Employee Benefits [Line Items]    
Actuarial assumption of retirement age [1] 60 years 60 years
CHILE | Other employees Male [Member]    
Disclosure Of Employee Benefits [Line Items]    
Actuarial assumption of retirement age [1] 65 years 65 years
CHILE | Other employees Female [Member]    
Disclosure Of Employee Benefits [Line Items]    
Actuarial assumption of retirement age [1] 60 years 60 years
ARGENTINA    
Disclosure Of Employee Benefits [Line Items]    
Actuarial assumption of discount rates 54.87% 49.14%
Actuarial assumption of voluntary employee turnover rate 50.00% 50.00%
Actuarial assumption of rotation rate 50.00% 50.00%
Actuarial assumption of expected rates of salary increases 46.10% 45.10%
ARGENTINA | Officers [Member]    
Disclosure Of Employee Benefits [Line Items]    
Actuarial assumption of retirement age [1] 60 years 60 years
ARGENTINA | Other employees Male [Member]    
Disclosure Of Employee Benefits [Line Items]    
Actuarial assumption of retirement age [1] 65 years 65 years
ARGENTINA | Other employees Female [Member]    
Disclosure Of Employee Benefits [Line Items]    
Actuarial assumption of retirement age [1] 60 years 60 years
[1] Average of the Company.