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Intangible Assets and Goodwill, Net - Future amortization expense of trademarks (Details) - MXN ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Sep. 30, 2015
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Intangible Assets and Goodwill, Net          
Intangible assets and goodwill, net   $ 42,724,218 $ 43,328,954    
Concessions          
Intangible Assets and Goodwill, Net          
Intangible assets and goodwill, net   15,166,067 15,166,067 $ 15,166,067  
Intangible Assets with Finite Useful Lives          
Intangible Assets and Goodwill, Net          
Intangible assets and goodwill, net   13,409,283 13,873,817    
Intangible Assets with Finite Useful Lives | Trademarks          
Intangible Assets and Goodwill, Net          
Intangible assets and goodwill, net   255,782 228,510    
Estimated useful life (in years) 4 years        
Amortization     321,520    
Intangible Assets with Finite Useful Lives | Concessions          
Intangible Assets and Goodwill, Net          
Intangible assets and goodwill, net   $ 110,701 221,402    
Estimated useful life (in years)   5 years      
Amortization   $ 110,701 $ 110,701    
Intangible Assets with Finite Useful Lives | Concessions | 2021          
Intangible Assets and Goodwill, Net          
Amortization   $ 110,701      
Intangible Assets with Finite Useful Lives | Concessions | 2023          
Intangible Assets and Goodwill, Net          
Intangible assets and goodwill, net         $ 553,505