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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, 2020
Dec. 31, 2019
Trade and other payables [abstract]    
Trade accounts payable $ 5,347,325 $ 4,179,830
Other accrued liabilities 1,266,512 1,547,214
Total accounts payable trade and other accrued liabilities $ 6,613,837 $ 5,727,044