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Income tax incurred and deferred: Movement (Details) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Income tax:    
Beginning Balances $ 3,081,668 $ 3,033,930
IFRS 16 adoption adjustment Conversion revaluation effect Airplan and Aerostar (79,459)  
Revaluation effect by conversion Airplan y Aerostar   (2,238)
Increase (decrease) in deferred tax liability (asset) 2,375 49,976
Ending Balances 3,004,584 3,081,668
Colombia (Airplan)    
Income tax:    
Increase (decrease) in deferred tax liability (asset) (92,794) 2,981
Mexico    
Income tax:    
Increase (decrease) in deferred tax liability (asset) 57,023 13,116
Puerto Rico (Aerostar)    
Income tax:    
Increase (decrease) in deferred tax liability (asset) 38,146 33,879
Allowance for doubtful accounts    
Income tax:    
Beginning Balances (36,874) (44,916)
Increase (decrease) in deferred tax liability (asset) 2,578 8,042
Ending Balances (34,296) (36,874)
Allowance for doubtful accounts | Colombia (Airplan)    
Income tax:    
Increase (decrease) in deferred tax liability (asset) 2,467 (2,468)
Allowance for doubtful accounts | Mexico    
Income tax:    
Increase (decrease) in deferred tax liability (asset) 111 10,510
Concessioned assets    
Income tax:    
Beginning Balances 3,079,749 2,858,318
Increase (decrease) in deferred tax liability (asset) (62,827) 221,431
Ending Balances 3,016,922 3,079,749
Concessioned assets | Colombia (Airplan)    
Income tax:    
Increase (decrease) in deferred tax liability (asset) (161,556) 178,236
Concessioned assets | Mexico    
Income tax:    
Increase (decrease) in deferred tax liability (asset) 60,315 7,755
Concessioned assets | Puerto Rico (Aerostar)    
Income tax:    
Increase (decrease) in deferred tax liability (asset) 38,414 35,440
Unrealised foreign exchange gains (losses)    
Income tax:    
Beginning Balances 60,008 42,575
IFRS 16 adoption adjustment Conversion revaluation effect Airplan and Aerostar (102,370)  
Revaluation effect by conversion Airplan y Aerostar   20,427
Increase (decrease) in deferred tax liability (asset) (452) (2,994)
Ending Balances (42,814) 60,008
Unrealised foreign exchange gains (losses) | Colombia (Airplan)    
Income tax:    
Increase (decrease) in deferred tax liability (asset) (184) (1,433)
Unrealised foreign exchange gains (losses) | Puerto Rico (Aerostar)    
Income tax:    
Increase (decrease) in deferred tax liability (asset) (268) (1,561)
Other temporary differences    
Income tax:    
Beginning Balances (21,215) 177,953
IFRS 16 adoption adjustment Conversion revaluation effect Airplan and Aerostar 22,911  
Revaluation effect by conversion Airplan y Aerostar   (22,665)
Increase (decrease) in deferred tax liability (asset) 63,076 (176,503)
Ending Balances 64,772 (21,215)
Other temporary differences | Colombia (Airplan)    
Income tax:    
Increase (decrease) in deferred tax liability (asset) 66,479 (171,354)
Other temporary differences | Mexico    
Income tax:    
Increase (decrease) in deferred tax liability (asset) $ (3,403) $ (5,149)