v3.26.1
Financial Instruments - Summary of Carrying Amounts and Fair Value of Financial Assets and Liabilities (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2025
USD ($)
Dec. 31, 2025
MXN ($)
Jan. 01, 2025
MXN ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2024
MXN ($)
Dec. 31, 2023
MXN ($)
Dec. 31, 2022
MXN ($)
Disclosure of detailed information about financial instruments [line items]              
Cash and cash equivalents $ 9,052,931 $ 162,651,289   $ 4,944,805 $ 88,841,826 $ 68,747,376 $ 64,414,511
Sundry debtors   18,378,494     26,789,620    
Investments in associates 155,532 2,794,404     2,692,938    
Other assets   23,720,662     32,330,944    
Suppliers (24,306,311) (436,704,206)     (505,989,382)    
Accounts and accrued expenses payable (3,778,373) (67,884,889)     (72,773,222)    
Leases   (41,184,280)     (46,825,266) $ (41,848,333)  
Long-term contractual liabilities $ (10,743,935) (193,033,065)     0    
Debt     $ (143,403,700)        
Fair Value              
Disclosure of detailed information about financial instruments [line items]              
Mexican Government Bonds   21,765,389     35,279,002    
Financial liabilities measured at fair value   (78,106,329)     (108,972,467)    
Long-term contractual liabilities   (182,718,845)          
Debt   (1,432,095,661)     (1,745,481,072)    
Derivative financial instruments | Fair Value              
Disclosure of detailed information about financial instruments [line items]              
Financial assets measured at fair value   14,534,464     9,203,958    
Equity instruments | Fair Value              
Disclosure of detailed information about financial instruments [line items]              
Financial assets measured at fair value         962,783    
Total carrying amount              
Disclosure of detailed information about financial instruments [line items]              
Financial assets measured at fair value   14,534,464     10,166,741    
Cash and cash equivalents   162,651,289     88,841,826    
Customers   111,994,478     126,733,175    
Officials and employees   5,342,168     5,541,324    
Sundry debtors   18,378,494     26,789,620    
Investments in associates   2,794,404     2,692,938    
Notes receivable   893,152     1,021,778    
Mexican Government Bonds   21,435,936     35,875,353    
Other assets   11,281,010     7,927,877    
Financial assets not measured at fair value   334,770,931     295,423,891    
Financial liabilities measured at fair value   (78,106,329)     (108,972,467)    
Suppliers   (436,704,206)     (505,989,382)    
Accounts and accrued expenses payable   (67,884,889)     (72,773,222)    
Leases   (41,184,280)     (46,825,266)    
Long-term contractual liabilities   (193,033,065)          
Debt   (1,531,298,090)     (1,978,772,255)    
Total   (2,270,104,530)     (2,604,360,125)    
Total carrying amount | Other financial liabilities              
Disclosure of detailed information about financial instruments [line items]              
Suppliers   (436,704,206)     (505,989,382)    
Accounts and accrued expenses payable   (67,884,889)     (72,773,222)    
Leases   (41,184,280)     (46,825,266)    
Long-term contractual liabilities   (193,033,065)          
Debt   (1,531,298,090)     (1,978,772,255)    
Total   (2,270,104,530)     (2,604,360,125)    
Total carrying amount | Derivative financial instruments              
Disclosure of detailed information about financial instruments [line items]              
Financial liabilities measured at fair value   (78,106,329)     (108,972,467)    
Total carrying amount | FVTPL              
Disclosure of detailed information about financial instruments [line items]              
Financial assets measured at fair value   14,534,464     9,203,958    
Financial liabilities measured at fair value   (78,106,329)     (108,972,467)    
Total carrying amount | FVTPL | Derivative financial instruments              
Disclosure of detailed information about financial instruments [line items]              
Financial liabilities measured at fair value   (78,106,329)     (108,972,467)    
Total carrying amount | FVOCI – equity instruments              
Disclosure of detailed information about financial instruments [line items]              
Financial assets measured at fair value   0     962,783    
Total carrying amount | Financial assets at amortized cost              
Disclosure of detailed information about financial instruments [line items]              
Cash and cash equivalents   162,651,289     88,841,826    
Customers   111,994,478     126,733,175    
Officials and employees   5,342,168     5,541,324    
Sundry debtors   18,378,494     26,789,620    
Investments in associates   2,794,404     2,692,938    
Notes receivable   893,152     1,021,778    
Mexican Government Bonds   21,435,936     35,875,353    
Other assets   11,281,010     7,927,877    
Financial assets not measured at fair value   334,770,931     295,423,891    
Total carrying amount | Derivative financial instruments              
Disclosure of detailed information about financial instruments [line items]              
Financial assets measured at fair value   14,534,464     9,203,958    
Total carrying amount | Derivative financial instruments | FVTPL              
Disclosure of detailed information about financial instruments [line items]              
Financial assets measured at fair value   14,534,464     9,203,958    
Total carrying amount | Equity instruments              
Disclosure of detailed information about financial instruments [line items]              
Financial assets measured at fair value         962,783    
Total carrying amount | Equity instruments | FVOCI – equity instruments              
Disclosure of detailed information about financial instruments [line items]              
Financial assets measured at fair value         962,783    
Level 1 | Fair Value              
Disclosure of detailed information about financial instruments [line items]              
Mexican Government Bonds   21,765,389     35,279,002    
Level 2 | Fair Value              
Disclosure of detailed information about financial instruments [line items]              
Long-term contractual liabilities   (182,718,845)          
Debt   (1,432,095,661)     (1,745,481,072)    
Level 2 | Derivative financial instruments | Fair Value              
Disclosure of detailed information about financial instruments [line items]              
Financial liabilities measured at fair value   (78,106,329)     (108,972,467)    
Level 2 | Derivative financial instruments | Fair Value              
Disclosure of detailed information about financial instruments [line items]              
Financial assets measured at fair value   $ 14,534,464     9,203,958    
Level 2 | Equity instruments | Fair Value              
Disclosure of detailed information about financial instruments [line items]              
Financial assets measured at fair value         $ 962,783