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Balances and Transactions in Foreign Currencies - Transactions (Details) $ in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2023 USD ($) | [1] | Dec. 31, 2023 MXN ($) | Dec. 31, 2022 MXN ($) | Dec. 31, 2021 MXN ($)
Disclosure of Balances and Transactions in Foreign Currencies [line items] |  |  |  |
Raw materials and consumables used |  | $ 115,542 | $ 84,984 | $ 42,014
Interest expense | $ 883 | 14,916 | 15,853 | 16,630
All Currencies Other Than Peso |  |  |  |
Disclosure of Balances and Transactions in Foreign Currencies [line items] |  |  |  |
Revenues |  | 16,395 | 7,024 | 4,282
Other Operating Revenues |  | 5,984 | 2,081 | 2,121
Raw materials and consumables used |  | 21,991 | 25,500 | 20,090
Interest expense |  | 1,554 | 2,637 | 4,837
Consulting Fees |  | 1,597 | 1,038 | 843
Asset Acquisitions |  | 43 | 47 | 188
Share Disposition |  | 3,120 |  |
Other |  | 5,033 | 5,024 | 2,973
U.S. dollars |  |  |  |
Disclosure of Balances and Transactions in Foreign Currencies [line items] |  |  |  |
Revenues |  | 13,322 | 6,373 | 4,261
Other Operating Revenues |  | 5,981 | 2,080 | 2,107
Raw materials and consumables used |  | 21,806 | 25,247 | 20,009
Interest expense |  | 1,266 | 2,411 | 3,466
Consulting Fees |  | 815 | 1,011 | 826
Asset Acquisitions |  | 40 | 44 | 180
Share Disposition |  | 0 |  |
Other |  | 5,022 | 4,245 | 2,908
Euros |  |  |  |
Disclosure of Balances and Transactions in Foreign Currencies [line items] |  |  |  |
Revenues |  | 3,064 | 651 | 14
Other Operating Revenues |  | 1 | 1 |
Raw materials and consumables used |  | 185 | 253 | 81
Interest expense |  | 288 | 226 | 1,371
Consulting Fees |  | 782 | 11 | 16
Asset Acquisitions |  | 0 | 3 | 8
Share Disposition |  | 3,120 |  |
Other |  | 11 | 779 | 1
Other currencies |  |  |  |
Disclosure of Balances and Transactions in Foreign Currencies [line items] |  |  |  |
Revenues |  |  | 0 | 7
Other Operating Revenues |  |  | 0 | 14
Raw materials and consumables used |  |  |  | 0
Interest expense |  |  |  | 0
Consulting Fees |  | 0 | 16 | 1
Asset Acquisitions |  | 3 |  |
Share Disposition |  | $ 0 |  |
Other |  |  | $ 0 | $ 64
[1] | Convenience translation to U.S. dollars ($) – See Note 2.2.3

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