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Income Taxes - Summary of Net Deferred Income Tax Liability (Detail) - MXN ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Major components of tax expense (income) [abstract]      
Balance at beginning of the period $ (5,136) $ (5,632) $ (8,669)
Deferred tax provision for the period 1,177 889 2,350
Change in the statutory rate 0 (82) 81
Effects in equity:      
Unrealized loss (gain) on derivative financial instruments (236) (591) 787
Cumulative translation effect (320) 61 (163)
Remeasurements of the net defined benefit liability 24 173 (27)
Inflation adjustment 41 46 9
Balance at end of the period $ (4,450) $ (5,136) $ (5,632)