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Trade Notes and Accounts Receivable, Net - Aging Analysis (Details) - MXN ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Disclosure of trade notes and accounts receivable    
Trade notes and accounts receivable, net $ 14,486,184 $ 19,748,850
1 to 90 days    
Disclosure of trade notes and accounts receivable    
Trade notes and accounts receivable, net 4,180,830 4,104,913
91 to 180 days    
Disclosure of trade notes and accounts receivable    
Trade notes and accounts receivable, net 1,182,634 1,291,493
More than 180 days    
Disclosure of trade notes and accounts receivable    
Trade notes and accounts receivable, net $ 4,706,908 $ 4,638,228