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Overview: - Significant events (Details)
$ in Thousands
 12 Months Ended
Dec. 30, 2020
USD ($)
Sep. 11, 2020
COP ($)
Aug. 19, 2020
MXN ($)
Jun. 29, 2020
MXN ($)
May 12, 2020
USD ($)
May 12, 2020
MXN ($)
Apr. 01, 2020
USD ($)
Apr. 01, 2020
MXN ($)
Jun. 02, 2015
COP ($)
Jun. 02, 2015
MXN ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2020
MXN ($)
Dec. 31, 2019
MXN ($)
Dec. 31, 2018
MXN ($)
Dec. 31, 2020
COP ($)
Dec. 31, 2020
MXN ($)
Dec. 30, 2020
MXN ($)
Sep. 30, 2020
MXN ($)
Sep. 11, 2020
MXN ($)
Dec. 31, 2019
COP ($)
Dec. 31, 2019
MXN ($)
Disclosure of geographical areas [line items]                                          
Points to add interest rate                             1.25% 1.25%       1.25% 1.25%
Increase in allowance for bad debts                       $ 154,417.000 $ 154,417,000                
Deferment investments     $ 2,292,355,000                             $ 2,292,355,000      
Loans received                               $ 7,135,795,000         $ 7,054,546,000
Disposal of loans                 $ 440,000,000,000 $ 2,897,404,000   $ 243,998,000 $ 152,047,000 $ 3,090,124,000              
Percentage of decrease in consolidated income, excluding income from construction services                     (42.46%) (42.46%)                  
Percentage of decrease in aeronautical income                     (43.60%) (43.60%)                  
Percentage of decrease in non-aeronautical income                     (40.63%) (40.63%)                  
Mexico                                          
Disclosure of geographical areas [line items]                                          
Reduction in passenger traffic                     51.60% 51.60%                  
Points to add interest rate                             7.00% 7.00%          
Term of guaranteed notes receivable                     1 year 6 months 1 year 6 months                  
Notes received pledged                               $ 185,140,000          
Increase in allowance for bad debts                       $ 70,470,000                  
Deferment investments     $ 2,292,355,000                                    
Period for quinquennial Master Development Program     5 years                                    
Loans received                               3,980,000,000         4,000,000,000
Percentage of decrease in aeronautical income                     (50.82%) (50.82%)                  
Percentage of decrease in non-aeronautical income                     (42.53%) (42.53%)                  
Colombia (Airplan)                                          
Disclosure of geographical areas [line items]                                          
Reduction in passenger traffic                     65.00% 65.00%                  
Notes received pledged                               60,617,000          
Increase in allowance for bad debts                       $ 33,105,000                  
Loans received   $ 11,612,000,000                         $ 375,525,853 2,956,708,000     $ 67,041,000 $ 402,597,463 $ 3,054,546,000
Term of loan   1 year                                      
Percentage of decrease in aeronautical income                     (64.86%) (64.86%)                  
Percentage of decrease in non-aeronautical income                     (41.44%) (41.44%)                  
Puerto Rico (Aerostar)                                          
Disclosure of geographical areas [line items]                                          
Reduction in passenger traffic                     48.70% 48.70%                  
Increase in allowance for bad debts                       $ 50,842,000                  
Loans received $ 20,000                               $ 399,010,000        
Term of loan 3 years                                        
Disposal of loans             $ 10,000 $ 239,200,000                          
Percentage of decrease in aeronautical income                     (3.33%) (3.33%)                  
Percentage of decrease in non-aeronautical income                     (32.72%) (32.72%)                  
Amount of grant offer         $ 33,417 $ 717,590,000         $ 33,417 $ 717,590,000                  
Amount of aid subsidy received         $ 17,125 $ 367,752,000         $ 17,125 $ 367,752,000                  
Banco Popular De Puerto Rico                                          
Disclosure of geographical areas [line items]                                          
Points to add interest rate 0.50%           0.50% 0.50%                 0.50%        
Loans received                             $ 10,000 $ 199,087,000          
Term of loan 3 years                                        
Banco Popular De Puerto Rico | Mexico                                          
Disclosure of geographical areas [line items]                                          
Loans received       $ 1,500,000,000                                  
Term of loan       18 months