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Taxes - Components of Income Tax Expense (Details)
$ in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2024
USD ($)
 [1]
Dec. 31, 2024
MXN ($)
Dec. 31, 2023
MXN ($)
Dec. 31, 2022
MXN ($)
Disclosure of income taxes [Line Items]        
Current tax expense   $ 24,552 $ 30,413 $ 17,007
Deferred tax expense (benefit):        
Origination and reversal of temporary differences   553 247 (1,164)
Utilization (benefit) of tax losses, net   2,299 (3,198) (389)
Change in the statutory rate   (15) (172) (102)
Total deferred tax expense (benefit)   2,837 (3,123) (1,655)
Total income taxes   27,389 27,290 15,352
Total income taxes attributable to continued operation $ 1,219 25,433 12,971 13,275
Aggregate continuing and discontinued operations        
Deferred tax expense (benefit):        
Total deferred tax expense (benefit)   2,055 (5,960) (1,590)
Total income taxes   25,433 12,971 13,275
Discontinued operations        
Deferred tax expense (benefit):        
Total deferred tax expense (benefit)   782 2,838 (65)
Total income taxes   $ 1,956 $ 14,319 $ 2,077
[1] Convenience translation to U.S. dollars ($) – See Note 2.2.4