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Income Taxes - Summary of Composition of Income Tax Expense (Detail) - MXN ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Current period income tax $ 36,182,909 $ 39,557,635
Deferred income tax (7,070,405) (3,900,303)
Income tax expense 29,112,504 35,657,332 [1]
Foreign [member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Income tax of foreign discontinued operations $ 0 $ 0
[1] Restated for discontinued operations.