v3.26.1
Balances and Transactions in Foreign Currencies - Transactions (Details)
$ in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
 [1]
Dec. 31, 2025
MXN ($)
Dec. 31, 2024
MXN ($)
Dec. 31, 2023
MXN ($)
Disclosure of Balances and Transactions in Foreign Currencies [line items]        
Purchases of Raw Materials   $ 131,644 $ 126,040 $ 115,542
Interest Expense $ 1,183 21,303 20,002 14,916
All Currencies Other Than Peso        
Disclosure of Balances and Transactions in Foreign Currencies [line items]        
Revenues   5,401 8,098 16,395
Other Operating Revenues   791 1,522 5,984
Purchases of Raw Materials   21,343 25,063 21,991
Interest Expense   3,056 4,766 1,554
Consulting Fees   1,697 1,844 1,597
Asset Acquisitions   13 8 43
Share Disposition   240 0 3,120
Other   3,546 6,597 5,033
U.S. dollars        
Disclosure of Balances and Transactions in Foreign Currencies [line items]        
Revenues   5,023 8,008 13,322
Other Operating Revenues   791 1,522 5,981
Purchases of Raw Materials   21,343 25,063 21,806
Interest Expense   2,609 2,295 1,266
Consulting Fees   1,542 1,654 815
Asset Acquisitions   13 8 40
Share Disposition   0 0 0
Other   5,000 6,597 5,022
Euros        
Disclosure of Balances and Transactions in Foreign Currencies [line items]        
Revenues   225 69 3,064
Other Operating Revenues   0 0 1
Purchases of Raw Materials   0 0 185
Interest Expense   447 2,471 288
Consulting Fees   146 186 782
Asset Acquisitions   0 0 0
Share Disposition   240 0 3,120
Other   (1,454) 0 11
Other currencies        
Disclosure of Balances and Transactions in Foreign Currencies [line items]        
Revenues   153 21 9
Other Operating Revenues   0 0 2
Purchases of Raw Materials   0 0 0
Interest Expense   0 0 0
Consulting Fees   9 4 0
Asset Acquisitions   0 0 3
Share Disposition   0 0 0
Other   $ 0 $ 0 $ 0
[1] Convenience translation to U.S. dollars ($) – See Note 2.2.4