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Other Assets and Other Financial Assets - Other financial assets (Details)
$ in Millions, $ in Millions
Dec. 31, 2021
USD ($)
Dec. 31, 2021
MXN ($)
Dec. 31, 2020
MXN ($)
Categories of financial assets [abstract]      
Non-current accounts receivable   $ 1,245 $ 983
Derivative financial instruments (see Note 21)   16,710 14,283
Others   674 334
Other investments in equity instruments   22,442 16,786
Total other financial assets $ 2,002 $ 41,071 $ 32,386