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Trade Notes and Accounts Receivable, Net - Carrying Amount (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
U.S. dollar    
Disclosure of trade notes and accounts receivable    
Trade notes and accounts receivable, net 3,610,639 2,829,234
Other currencies    
Disclosure of trade notes and accounts receivable    
Trade notes and accounts receivable, net 45,114 107,510
Currencies other than Peso    
Disclosure of trade notes and accounts receivable    
Trade notes and accounts receivable, net $ 3,655,753 $ 2,936,744