Financial Instruments - Summarizes Outstanding Cross Currency Swap Agreements (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 three years \| Cash flow hedges
Disclosure of detailed information about financial instruments [line items]
Notional Amount	9,121
Derivative financial instruments liability	(137)
Asset	433
Cross-currency swaps \| Three to four years \| Cash flow hedges
Disclosure of detailed information about financial instruments [line items]
Notional Amount	16,357
Derivative financial instruments liability	(68)
Asset	3,114
Cross-currency swaps \| Four to six years \| Cash flow hedges
Disclosure of detailed information about financial instruments [line items]
Notional Amount	608
Derivative financial instruments liability	0
Asset	53
Cross-currency swaps \| After six years \| Cash flow hedges
Disclosure of detailed information about financial instruments [line items]
Notional Amount	0
Derivative financial instruments liability	0
Asset	$ 641

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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
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-IssueDate 2024-01-01
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- Definition

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

+ References

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- Definition

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.

+ References

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
-Name IAS
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-IssueDate 2024-01-01
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-URIDate 2024-03-27

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