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Employee Benefits - Liabilities for Employee Benefits (Details) $ in Millions, $ in Millions | Dec. 31, 2021 USD ($) | Dec. 31, 2021 MXN ($) | Dec. 31, 2020 MXN ($)
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Disclosure of defined benefit plans [line items] |  |  |
Total Employee Benefits | $ 370 | $ 7,600 | $ 7,253
Pension and retirement plans |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Defined benefit obligation |  | 8,015 | 7,679
Defined benefit obligation funds at fair value |  | (2,952) | (2,788)
Net defined benefit liability |  | 5,063 | 4,891
Seniority premiums |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Defined benefit obligation |  | 2,108 | 1,763
Defined benefit obligation funds at fair value |  | (133) | (137)
Net defined benefit liability |  | 1,975 | 1,626
Post retirement medical services |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Defined benefit obligation |  | 647 | 812
Defined benefit obligation funds at fair value |  | (85) | (76)
Net defined benefit liability |  | $ 562 | $ 736

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- Definition The present value, without deducting any plan assets, of expected future payments required to settle the obligation resulting from employee service in the current and prior periods. [Refer: Plan assets, at fair value] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2021-01-01 -Paragraph 57 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_57_a&doctype=Standard -URIDate 2021-03-24 + Details
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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. + Details
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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 [member]] + References 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 + Details
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- Definition The amount of non-current provisions for employee benefits. [Refer: Provisions for employee benefits] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 78 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_d&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2021-01-01 -Paragraph 57 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_57_a&doctype=Standard -URIDate 2021-03-24 + Details
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- Details
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- Details
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- Details
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