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Income taxes (Details textual)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Taxes [Line Items]        
Applicable tax rate 27.00% 27.00% 27.00%  
Description of expiry date of deductible temporary differences, unused tax losses and unused tax credits In accordance with current tax laws in Chile, tax losses do not expire and can be applied indefinitely. Argentina, Uruguay and Paraguay tax losses expire after 5 years and Bolivia tax losses expire after 3 years.      
Income tax rate Increase 0.12% 0.00% 0.00%  
Percentage of Withholding Tax Rate On Dividends 13.00% 7.00%    
Bottom of range [member]        
Income Taxes [Line Items]        
Income tax rate Increase 25.00%      
Top of range [member]        
Income Taxes [Line Items]        
Income tax rate Increase   30.00%    
Scenario plan for tax rate [Member]        
Income Taxes [Line Items]        
Applicable tax rate     30.00%  
CHILE        
Income Taxes [Line Items]        
Income tax rate Increase 27.35% 24.67% 21.54%  
ARGENTINA        
Income Taxes [Line Items]        
Applicable tax rate 35.00%      
Applicable excise tax rate   8.00%    
Earnings retention ratio 0.00% 13.00%    
ARGENTINA | Scenario plan for tax rate [Member]        
Income Taxes [Line Items]        
Applicable tax rate 25.00% 25.00%    
Applicable excise tax rate     14.00%  
Earnings retention ratio     (7.00%) 13.00%