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Income Taxes - Summary of Deferred Tax Related to Items Recognized in OCI (Detail) - MXN ($) $ in Thousands | 9 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022
Major components of tax expense (income) [abstract] |  |
Equity investments at fair value | $ 3,714,808 | $ 7,400,822
Deferred tax benefit recognized in OCI | $ 3,714,808 | $ 7,400,822

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