Financial Instruments - Summary of Net Effect of Changes in Fair Value of Derivative Financial Instruments that did not Meet Hedging Criteria for Accounting Purposes (Detail) - MXN ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Disclosure of net effect of changes in fair value of derivative financial instruments that did not meet hedging criteria for accounting purposes [line items] | |||
| Market value (loss) on financial instruments | $ 67 | $ 169 | $ (672) |
| Derivatives Not Designated For Hedge Accounting | Cross currency swaps and interest rate swaps | |||
| Disclosure of net effect of changes in fair value of derivative financial instruments that did not meet hedging criteria for accounting purposes [line items] | |||
| Market value (loss) on financial instruments | $ 938 | $ 141 | $ (2,270) |