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Financial Instruments - Hedging reserve Rollforward (Details) - MXN ($) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of detailed information about hedged items [line items] |  |  |  |
Taxes due to changes in reserves during the period |  | $ (355) | $ (1,158) | $ 992
IFS TopCo LLC |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |
Economic ownership percentage | 37.10% | 37.10% | 0.00% |
Reserve of cash flow hedges |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |
Balances at beginning of the period |  | $ 1,881 |  |
Balances at the end of the period |  | 956 | $ 1,881 |
Reserve of cash flow hedges | Foreign exchange currency risk | Purchase of stock |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |
Fair value changes |  | (1,950) |  |
Amounts included in non-financial costs |  | 1,806 |  |
Reserve of cash flow hedges | Foreign exchange currency risk | Other stock |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |
Fair value changes |  | (360) |  |
Amounts reclassified to profit an loss |  | 2,671 |  |
Reserve of cash flow hedges | Interest rate risk |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |
Fair value changes |  | 64 |  |
Amounts reclassified to profit an loss |  | 201 |  |
Taxes due to changes in reserves during the period |  | (3,140) |  |
Reserve of cash flow hedges | Commodity price risk | Purchase of stock |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |
Fair value changes |  | 145 |  |
Amounts included in non-financial costs |  | $ (363) |  |

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- Definition The amounts removed from equity and included in the initial cost or other carrying amount of a non-financial asset (liability) whose acquisition or incurrence was a hedged, highly probable forecast transaction, net of tax. [Refer: Carrying amount [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expired 2023-01-01 -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 23 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_23_e&doctype=Standard&book=b -URIDate 2023-03-23 + Details
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- Definition The gains (losses) recognised in other comprehensive income on cash flow hedges, net of tax, before reclassification adjustments. [Refer: Cash flow hedges [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 91 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_91_a&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 24C -Subparagraph b -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_24C_b_i&doctype=Standard -URIDate 2023-03-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 24E -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_24E_a&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of income tax relating to amounts recognised in other comprehensive income in relation to cash flow hedges. [Refer: Cash flow hedges [member]; Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2023-01-01 -Paragraph 81 -Subparagraph ab -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2023-en-r&anchor=para_81_ab&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 90 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_90&doctype=Standard -URIDate 2023-03-23 + Details
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