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Financial Instruments - Impact of Hedging on Equity (Details) $ in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($) | Dec. 31, 2024 MXN ($) | Dec. 31, 2023 MXN ($) | Dec. 31, 2022 MXN ($)
Disclosure of detailed information about hedged items [line items] |  |  |  |  |
Beginning Balance |  |  | $ 378,369 | $ 337,801 | $ 335,117
Foreign currency revaluation of the net foreign operations | $ 0 | [1] | 0 | (5,153) | 3,677
Ending Balance | $ 18,275 | [2] | 381,131 | 378,369 | 337,801
Equity attributable to equity holders of the parent |  |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |  |
Beginning Balance |  |  | 303,860 | 262,604 | 262,601
Ending Balance |  |  | 297,502 | 303,860 | 262,604
Non-controlling interest |  |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |  |
Beginning Balance |  |  | 74,509 | 75,197 | 72,516
Ending Balance |  |  | 83,629 | 74,509 | 75,197
Impact Of Hedging Instruments |  |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |  |
Beginning Balance |  |  | 956 | 1,881 |
Financial instruments - purchases |  |  | 278 | (967) |
Change in fair value of financial instruments recognized in OCI |  |  | 11,031 | (3,995) |
Amount reclassified from OCI to profit or loss |  |  | (4,228) | 4,322 |
Foreign currency revaluation of the net foreign operations |  |  | (5,036) | 2,854 |
Effects of changes in foreign exchange rates |  |  | (13) | 1 |
Tax effect |  |  | 133 | (3,140) |
Ending Balance |  |  | 3,121 | 956 | 1,881
Impact Of Hedging Instruments | Equity attributable to equity holders of the parent |  |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |  |
Beginning Balance |  |  | 1,260 | 1,958 |
Financial instruments - purchases |  |  | (54) | (359) |
Change in fair value of financial instruments recognized in OCI |  |  | 7,082 | (1,917) |
Amount reclassified from OCI to profit or loss |  |  | (4,103) | 3,576 |
Foreign currency revaluation of the net foreign operations |  |  | (2,194) | 1,277 |
Effects of changes in foreign exchange rates |  |  | (3) | 1 |
Tax effect |  |  | 548 | (3,276) |
Ending Balance |  |  | 2,536 | 1,260 | 1,958
Impact Of Hedging Instruments | Forward contract |  |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |  |
Beginning Balance |  |  | (273) | (223) |
Financial instruments - purchases |  |  | 41 | (350) |
Change in fair value of financial instruments recognized in OCI |  |  | 345 | (595) |
Amount reclassified from OCI to profit or loss |  |  | (45) | 848 |
Effects of changes in foreign exchange rates |  |  | 12 | 2 |
Tax effect |  |  | (105) | 45 |
Ending Balance |  |  | (25) | (273) | (223)
Impact Of Hedging Instruments | Currency swap contract |  |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |  |
Beginning Balance |  |  | 1,225 | 2,049 |
Financial instruments - purchases |  |  | (261) | 50 |
Change in fair value of financial instruments recognized in OCI |  |  | 6,898 | (1,514) |
Amount reclassified from OCI to profit or loss |  |  | (4,039) | 2,698 |
Foreign currency revaluation of the net foreign operations |  |  | (2,194) | 1,277 |
Effects of changes in foreign exchange rates |  |  | (14) | 0 |
Tax effect |  |  | 733 | (3,335) |
Ending Balance |  |  | 2,348 | 1,225 | 2,049
Impact Of Hedging Instruments | Interest rate swaps |  |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |  |
Beginning Balance |  |  | 357 | 111 |
Change in fair value of financial instruments recognized in OCI |  |  | (64) | 64 |
Amount reclassified from OCI to profit or loss |  |  |  | 201 |
Tax effect |  |  | (64) | (19) |
Ending Balance |  |  | 229 | 357 | 111
Impact Of Hedging Instruments | Commodity price contracts |  |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |  |
Beginning Balance |  |  | (48) | 22 |
Financial instruments - purchases |  |  | 88 | (59) |
Change in fair value of financial instruments recognized in OCI |  |  | (133) | 128 |
Amount reclassified from OCI to profit or loss |  |  | (1) | (171) |
Effects of changes in foreign exchange rates |  |  | (1) | (1) |
Tax effect |  |  | 15 | 33 |
Ending Balance |  |  | (80) | (48) | 22
Impact Of Hedging Instruments | Non-controlling interest |  |  |  |  |
Disclosure of detailed information about hedged items [line items] |  |  |  |  |
Beginning Balance |  |  | (304) | (77) |
Financial instruments - purchases |  |  | 332 | (608) |
Change in fair value of financial instruments recognized in OCI |  |  | 3,949 | (2,078) |
Amount reclassified from OCI to profit or loss |  |  | (125) | 746 |
Foreign currency revaluation of the net foreign operations |  |  | (2,842) | 1,577 |
Effects of changes in foreign exchange rates |  |  | (10) | 0 |
Tax effect |  |  | (415) | 136 |
Ending Balance |  |  | $ 585 | $ (304) | $ (77)
[1] | Convenience translation to U.S. dollars ($) – See Note 2.2.4
[2] | Convenience translation to U.S. dollars ($) – See Note 2.2.4

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