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Taxes - Net Deferred Income Tax Asset Rollforward (Details) - MXN ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of income taxes [Line Items]      
Balance at the beginning of the period $ 20,067 $ 14,691 $ 16,010
Deferred tax provision for the period (Note 25.8) (5,960) (1,115) 622
Deferred tax income net recorded in share of the profit of equity method accounted investees 2 (694) 277
Acquisition of subsidiaries 1,871 0 0
Unrealized (gain) on cash flow hedges (594) (1,281) 1,006
Exchange differences on translation of foreign operations 1,002 (2,604) (491)
Remeasurements of the net defined benefit liability 405 497 380
Retained earnings of equity method accounted investees 954 (334) 32
Restatement effect of the period and beginning balances associated with hyperinflationary economies 121 155 (507)
Balance at the end of the period 20,227 20,067 14,691
Discontinued operations      
Disclosure of income taxes [Line Items]      
Related discontinued operations $ 2,039 $ 0 $ 0