Financial Instruments - Summarizes outstanding Cross Currency Swap Agreements for Prior Year (Detail) - MXN ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Disclosure of detailed information about financial instruments [line items]
Asset	$ 4,702	$ 96
Cross-currency swaps \| Less than one year \| Cash flow hedges
Disclosure of detailed information about financial instruments [line items]
Notional Amount	6,251	5,210
Derivative financial instruments liability	0	(984)
Asset	$ 461	96
Cross-currency swaps \| One to two years \| Cash flow hedges
Disclosure of detailed information about financial instruments [line items]
Notional Amount		7,602
Derivative financial instruments liability		(1,377)
Asset		0
Cross-currency swaps \| Two to four years \| Cash flow hedges
Disclosure of detailed information about financial instruments [line items]
Notional Amount		13,633
Derivative financial instruments liability		(803)
Asset		0
Cross-currency swaps \| Four to five years \| Cash flow hedges
Disclosure of detailed information about financial instruments [line items]
Notional Amount		507
Derivative financial instruments liability		(51)
Asset		$ 0

The amount of financial assets classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

+ References

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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No definition available.

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The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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