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Other Liabilities, Provisions, Contingencies and Commitments (Details)
$ in Millions, $ in Millions
Dec. 31, 2020
USD ($)
Dec. 31, 2020
MXN ($)
Dec. 31, 2019
MXN ($)
Disclosure of financial liabilities [abstract]      
Sundry creditors   $ 11,895 $ 11,509
Derivative financial instruments (see Note 21)   1,127 848
Other notes payable     11,294
Others   3 4
Total Other current financial liabilities $ 655 13,025 23,655
Contingencies   6,303 8,854
Payable taxes   651 710
Others   2,586 879
Total provisions and other non-current liabilities $ 480 $ 9,540 $ 10,443