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Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail)
$ in Millions, $ in Millions
Dec. 31, 2020
USD ($)
 [1]
Dec. 31, 2020
MXN ($)
Dec. 31, 2019
MXN ($)
Cash and cash equivalents [abstract]      
Cash and bank balances   $ 4,435 $ 4,641
Cash equivalents (see Note 3.5)   39,062 15,850
Total $ 2,187 $ 43,497 $ 20,491 [2]
[1] Convenience translation to U.S. dollars ($) – See Note 2.2.3
[2] The Company initially adopted IFRS 16 on January 1, 2019 using the modified retrospective approach under which the comparative information is not restated. – See Note 3.18