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Trade Notes and Accounts Receivable, Net (Details) - MXN ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Trade Notes and Accounts Receivable, Net      
Non-interest bearing notes received from customers as deposits and advances mainly in connection with annual ("upfront basis") and from time to time ("scatter basis") prepayments $ 4,188,293 $ 12,676,363  
Trade accounts receivable 15,144,534 11,451,803  
Loss allowance (4,846,643) (4,379,316) $ (3,657,079)
Total trade and other current receivables $ 14,486,184 $ 19,748,850