Financial Instruments - Outstanding Forward Agreements to Purchase Foreign Currency (Detail) - MXN ($) |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Disclosure of detailed information about financial instruments [line items] | ||
| Asset | $ 4,702,000,000 | $ 96,000,000 |
| Option to purchase foreign currency | Less than one year | ||
| Disclosure of detailed information about financial instruments [line items] | ||
| Notional Amount | 3,701,000,000 | |
| Derivatives financial liabilities (assets) | (24,000,000) | |
| Asset | 248,000,000 | |
| Forward agreements to purchase foreign currency | Less than one year | ||
| Disclosure of detailed information about financial instruments [line items] | ||
| Notional Amount | 4,035,000,000 | 10,700,000,000 |
| Derivatives financial liabilities (assets) | (72,000,000) | (550,000,000) |
| Asset | $ 310,000,000 | $ 36,000,000 |