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Income tax incurred and deferred: (Details 4)
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2018
MXN ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
MXN ($)
Dec. 31, 2016
MXN ($)
Beginning Balances $ 3,033,930   $ 1,870,660 $ 1,523,722
Proceeds from asset tax recovery     152,785 34,090
Tax charged or credited in the comprehesive income statement       (101,792)
Increase (decrease) in deferred tax liability (asset) 49,976   (292,750) (67,702)
Ending Balances 3,081,668   3,033,930 1,870,660
Airplan [Member]        
Proceeds from asset tax recovery     579,585  
Increase (decrease) in deferred tax liability (asset) 2,981   (9,337)  
Identifiable assets acquired (liabilities assumed)     281,899  
Income tax relating to change in value of foreign currency basis spreads included in other comprehensive income   $ (2,238) 12,380  
Aerostar [Member]        
Proceeds from asset tax recovery     203,512  
Increase (decrease) in deferred tax liability (asset) 33,879   28,678  
Initial valuation of Investments     605,382  
Income tax relating to change in value of foreign currency basis spreads included in other comprehensive income     35,117  
Mexico City [Member]        
Increase (decrease) in deferred tax liability (asset) 13,116   (312,091)  
Provision for load portfolio impairment        
Beginning Balances (36,874)   (33,930) (31,576)
Tax charged or credited in the comprehesive income statement       (2,354)
Increase (decrease) in deferred tax liability (asset) 8,042   (10,986) (2,354)
Ending Balances     (36,874) (33,930)
Provision for load portfolio impairment | Airplan [Member]        
Increase (decrease) in deferred tax liability (asset) (2,468)      
Provision for load portfolio impairment | Mexico City [Member]        
Increase (decrease) in deferred tax liability (asset) 10,510   (10,986)  
Concessioned assets        
Beginning Balances 2,858,318   1,447,089 1,766,981
Tax charged or credited in the comprehesive income statement       (94,340)
Increase (decrease) in deferred tax liability (asset) 221,431   (261,412) (94,340)
Ending Balances     2,858,318 1,447,089
Concessioned assets | Airplan [Member]        
Proceeds from asset tax recovery     356,296  
Increase (decrease) in deferred tax liability (asset) 178,236   (6,191)  
Identifiable assets acquired (liabilities assumed)     281,899  
Concessioned assets | Aerostar [Member]        
Proceeds from asset tax recovery     203,512  
Increase (decrease) in deferred tax liability (asset) 35,440   28,678  
Initial valuation of Investments     605,382  
Concessioned assets | Mexico City [Member]        
Increase (decrease) in deferred tax liability (asset) 7,755   (283,899)  
Recoverable asset tax        
Beginning Balances 0   (152,785) (186,875)
Proceeds from asset tax recovery     152,785 34,090
Increase (decrease) in deferred tax liability (asset) 0   0 34,090
Ending Balances     0 (152,785)
Recoverable asset tax | Mexico City [Member]        
Increase (decrease) in deferred tax liability (asset) 0   0  
Foreign currency translarion        
Beginning Balances 60,008   42,575  
Increase (decrease) in deferred tax liability (asset) (2,994)      
Income tax relating to change in value of foreign currency basis spreads included in other comprehensive income 20,427   7,458  
Ending Balances     60,008 42,575
Foreign currency translarion | Airplan [Member]        
Increase (decrease) in deferred tax liability (asset) (1,433)      
Foreign currency translarion | Aerostar [Member]        
Increase (decrease) in deferred tax liability (asset) (1,561)      
Income tax relating to change in value of foreign currency basis spreads included in other comprehensive income     35,117  
Other        
Beginning Balances 177,953   (29,906) (24,808)
Tax charged or credited in the comprehesive income statement       (5,098)
Increase (decrease) in deferred tax liability (asset) (176,503)   (20,352) (5,098)
Income tax relating to change in value of foreign currency basis spreads included in other comprehensive income     (22,665) 4,922
Ending Balances     177,953 $ (29,906)
Other | Airplan [Member]        
Proceeds from asset tax recovery     223,289  
Increase (decrease) in deferred tax liability (asset) (171,354)   (3,146)  
Other | Mexico City [Member]        
Increase (decrease) in deferred tax liability (asset) $ (5,149)   $ (17,206)