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Accounts receivable - Net: Additional information (Details) - MXN ($)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 30, 2020
Apr. 01, 2020
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Trade and other current receivables $ 1,358,227,000 $ 1,003,793,000    
Points to add interest rate 1.25% 1.25%    
Increase in impairment allowance for accounts receivable $ 154,417.000 $ 154,417,000    
Accounts receivables 1,458,653,000 1,195,559,000    
Unimpaired past due        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Accounts receivables 474,854,000 580,914,000    
Unimpaired past due | Three months        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Accounts receivables 189,721,000 209,003,000    
Unimpaired past due | Later than one year        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Accounts receivables 217,085,000 264,682,000    
Passenger fees        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Trade and other current receivables $ 547,810,000 $ 615,223,000    
Banco Popular De Puerto Rico        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Points to add interest rate     0.50% 0.50%
Mexico        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Points to add interest rate 7.00%      
Notes received pledged $ 185,140,000      
Term of guaranteed notes receivable 1 year 6 months      
Increase in impairment allowance for accounts receivable $ 70,470,000      
Accounts receivables 65,452,000      
Colombia (Airplan)        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Notes received pledged 60,617,000      
Increase in impairment allowance for accounts receivable 33,105,000      
Puerto Rico (Aerostar)        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Increase in impairment allowance for accounts receivable $ 50,842,000      
International passenger traffic (in percent) 70.00%      
Domestic traffic (in percent) 80.00% 85.00%