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Taxes - Net Deferred Income Tax Asset Rollforward (Details) - MXN ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of income taxes [Line Items] |  |  |
Balance at the beginning of the period | $ 20,227 | $ 20,067 | $ 14,691
Deferred tax provision for the period | 2,055 | (5,960) | (1,115)
Deferred tax income net recorded in share of the profit of equity method accounted investees | 0 | 2 | (694)
Acquisition of subsidiaries | 0 | 1,871 | 0
Unrealized (gain) on cash flow hedges | 801 | (594) | (1,281)
Exchange differences on translation of foreign operations | 18 | 1,002 | (2,604)
Remeasurements of the net defined benefit liability | (399) | 405 | 497
Retained earnings of equity method accounted investees | 0 | 954 | (334)
Restatement effect of the period and beginning balances associated with hyperinflationary economies | (803) | 121 | 155
Balance at the end of the period | 18,219 | 20,227 | 20,067
Discontinued operations |  |  |
Disclosure of income taxes [Line Items] |  |  |
Related discontinued operations | $ 336 | $ 2,039 | $ 0

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