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Employee Benefits - Liabilities for Employee Benefits (Details) - MXN ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Disclosure of defined benefit plans [line items]
Defined benefit obligation (plan funds)	$ 8,760	$ 6,920
Effect due to asset ceiling | Valora
Disclosure of defined benefit plans [line items]
Defined benefit obligation (plan funds)	208
Pension and Retirement Plans
Disclosure of defined benefit plans [line items]
Defined benefit obligation (plan funds)	5,428	4,402
Pension and Retirement Plans | Discontinued operations
Disclosure of defined benefit plans [line items]
Defined benefit obligation (plan funds)	0	(195)
Pension and Retirement Plans | Defined benefit obligation
Disclosure of defined benefit plans [line items]
Defined benefit obligation (plan funds)	17,866	15,560
Pension and Retirement Plans | Plan assets
Disclosure of defined benefit plans [line items]
Defined benefit obligation (plan funds)	(16,227)	(14,061)
Pension and Retirement Plans | Effect due to asset ceiling
Disclosure of defined benefit plans [line items]
Defined benefit obligation (plan funds)	3,789	3,098
Seniority Premiums
Disclosure of defined benefit plans [line items]
Defined benefit obligation (plan funds)	2,846	2,058
Seniority Premiums | Discontinued operations
Disclosure of defined benefit plans [line items]
Defined benefit obligation (plan funds)	0	(235)
Seniority Premiums | Defined benefit obligation
Disclosure of defined benefit plans [line items]
Defined benefit obligation (plan funds)	2,972	2,416
Seniority Premiums | Plan assets
Disclosure of defined benefit plans [line items]
Defined benefit obligation (plan funds)	(126)	(123)
Post-Retirement Medical Services
Disclosure of defined benefit plans [line items]
Defined benefit obligation (plan funds)	486	460
Post-Retirement Medical Services | Discontinued operations
Disclosure of defined benefit plans [line items]
Defined benefit obligation (plan funds)	0	(49)
Post-Retirement Medical Services | Defined benefit obligation
Disclosure of defined benefit plans [line items]
Defined benefit obligation (plan funds)	594	604
Post-Retirement Medical Services | Plan assets
Disclosure of defined benefit plans [line items]
Defined benefit obligation (plan funds)	$ (108)	$ (95)

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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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- Definition

The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [domain]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2024-01-01
-Paragraph 140
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_140_a&doctype=Standard
-URIDate 2024-03-27

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