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Income Taxes - Additional Information (Detail) - MXN ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2023
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |  |
Income tax expense | $ 29,112,504 | $ 35,657,332 | [1] |
Decrease in effective income tax rate | 32.07% | 35.75% |  |
Percentage of legal rate | 30.00% |  |  |
Updated Effective Tax Rate [Member] |  |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |  |
Effective tax rate |  |  |  | 33.00%
Excluding income tax of foreign discontinued operations [member] |  |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |  |
Income tax expense |  | $ 35,657,332 |  |
Retained earnings [member] |  |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |  |
Deferred Tax Liability Asset | $ 2,315,646 | $ 16,498,136 |  |
[1] | Restated for discontinued operations.

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