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Accounts payable trade and other accrued liabilities (Schedule of Accounts Payable Trade and Accrued Liabilities) (Details) - MXN ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Trade and other payables [abstract]    
Trade accounts payable $ 4,179,830 $ 4,390,413
Other accrued liabilities 1,547,214 2,057,557
Total accounts payable trade and other accrued liabilities $ 5,727,044 $ 6,447,970