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Intangible Assets and Goodwill, Net - Changes in intangible assets and goodwill with indefinite useful lives (Details) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Analysis of the changes in intangible assets    
Balance at beginning of the period $ 43,063,516  
Balance at end of the period 43,328,954 $ 43,063,516
Concessions    
Analysis of the changes in intangible assets    
Balance at beginning of the period 15,166,067 15,166,067
Balance at end of the period 15,166,067 15,166,067
Goodwill    
Analysis of the changes in intangible assets    
Balance at beginning of the period 14,113,626 14,112,626
Balance at end of the period 14,113,626 14,113,626
Intangible Assets with Indefinite Useful Lives    
Analysis of the changes in intangible assets    
Balance at beginning of the period 29,759,102  
Balance at end of the period 29,455,137 29,759,102
Intangible Assets with Indefinite Useful Lives | Trademarks    
Analysis of the changes in intangible assets    
Balance at beginning of the period 479,409  
Balance at end of the period 175,444 479,409
Intangible Assets with Indefinite Useful Lives | Concessions    
Analysis of the changes in intangible assets    
Balance at beginning of the period 15,166,067  
Balance at end of the period 15,166,067 15,166,067
Intangible Assets with Indefinite Useful Lives | Goodwill    
Analysis of the changes in intangible assets    
Balance at beginning of the period 14,113,626  
Balance at end of the period 14,113,626 14,113,626
Cost    
Analysis of the changes in intangible assets    
Balance at beginning of the period 60,148,559  
Balance at end of the period 62,798,367 60,148,559
Cost | Intangible Assets with Indefinite Useful Lives    
Analysis of the changes in intangible assets    
Balance at beginning of the period 29,759,102 29,893,840
Additions   1,000
Impairment adjustments (67,574) (135,750)
Transfers and reclassifications (236,391)  
Effect of translation   12
Balance at end of the period 29,455,137 29,759,102
Cost | Intangible Assets with Indefinite Useful Lives | Trademarks    
Analysis of the changes in intangible assets    
Balance at beginning of the period 479,409 615,147
Impairment adjustments (67,574) (135,750)
Transfers and reclassifications (236,391)  
Effect of translation   12
Balance at end of the period 175,444 479,409
Cost | Intangible Assets with Indefinite Useful Lives | Concessions    
Analysis of the changes in intangible assets    
Balance at beginning of the period 15,166,067 15,166,067
Balance at end of the period 15,166,067 15,166,067
Cost | Intangible Assets with Indefinite Useful Lives | Goodwill    
Analysis of the changes in intangible assets    
Balance at beginning of the period 14,113,626 14,112,626
Additions   1,000
Balance at end of the period $ 14,113,626 $ 14,113,626