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Intangible assets, airport concessions and goodwill - Net: - Movements of intangible assets of airport concessions (Details) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Intangible assets:    
Intangible assets and goodwill $ 49,586,322 $ 50,353,003
Foreign currency translation (1,309,886) (116,753)
Additions 849,602  
Additions   (649,928)
Intangible assets and goodwill 49,126,038 49,586,322
Accumulated amortization    
Intangible assets:    
Intangible assets and goodwill 10,395,094 8,703,731
Foreign currency translation 33,462 25,080
Additions (1,770,613) (1,716,443)
Intangible assets and goodwill 12,132,245 10,395,094
Concessions (Regulated Activity)    
Intangible assets:    
Intangible assets and goodwill 49,961,253 49,423,536
Foreign currency translation (961,446) (468,600)
Additions 591,315 105,512
Disposals transfers 995,514 900,805
Intangible assets and goodwill 50,586,636 49,961,253
Contracts assets    
Intangible assets:    
Intangible assets and goodwill 671,496 636,527
Additions 1,236,196 935,774
Disposals transfers (929,632) (900,805)
Intangible assets and goodwill 978,060 671,496
Contractor advance    
Intangible assets:    
Additions 762,578  
Disposals transfers (65,882)  
Intangible assets and goodwill 696,696  
Licences and ODC    
Intangible assets:    
Intangible assets and goodwill 249,671 224,442
Additions 30,126 25,229
Intangible assets and goodwill 279,797 249,671
Commercial Right's (Unregulated Activity)    
Intangible assets:    
Intangible assets and goodwill 6,531,631 6,194,771
Foreign currency translation (381,902) 336,860
Intangible assets and goodwill 6,149,729 6,531,631
Goodwill | Gross carrying amount    
Intangible assets:    
Intangible assets and goodwill 2,567,365 2,577,458
Foreign currency translation   (10,093)
Intangible assets and goodwill $ 2,567,365 $ 2,567,365