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 [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2021-01-01
-Paragraph 140
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_140_a&doctype=Standard
-URIDate 2021-03-24

Name:	ifrs-full_LiabilityAssetOfDefinedBenefitPlans
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Post-employment Benefits - Funded status (Details) - MXN ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Post-employment pension plans.
Unfunded status of the plan assets	$ 1,913,680	$ 2,080,651	$ 1,468,112
Pensions
Post-employment pension plans.
Unfunded status of the plan assets	1,463,805	1,724,801
Seniority Premiums
Post-employment pension plans.
Unfunded status of the plan assets	$ 449,875	$ 355,850