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Other Liabilities, Provisions and Commitments - Summary of Changes in Balance of Provisions Recorded (Detail) - MXN ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of other provisions [line items]      
Balance at beginning of the period $ 3,887    
Balance at end of the period 3,270 $ 3,887  
Taxes      
Disclosure of other provisions [line items]      
Balance at beginning of the period 1,823 2,066 $ 2,540
Penalties and other charges 228 109 30
New contingencies 4 306 148
Cancellation and adjustments (447) (177) (59)
Payments (155) (473) (236)
Other effects 0 0 (263)
Effect of foreign currency exchange rates (105) (8) (94)
Balance at end of the period 1,348 1,823 2,066
Labor      
Disclosure of other provisions [line items]      
Balance at beginning of the period 1,385 1,472 1,681
Penalties and other charges 64 80 303
New contingencies 843 516 363
Cancellation and adjustments (523) (385) (445)
Contingencies added in business combinations 0 65 0
Payments (308) (301) (358)
Effect of foreign currency exchange rates (153) (62) (72)
Balance at end of the period 1,308 1,385 1,472
Legal      
Disclosure of other provisions [line items]      
Balance at beginning of the period 679 612 879
Penalties and other charges 50 57 68
New contingencies 117 75 26
Cancellation and adjustments (109) (79) (241)
Contingencies added in business combinations 0 149 0
Payments (68) (110) (97)
Effect of foreign currency exchange rates (55) (25) (23)
Balance at end of the period $ 614 $ 679 $ 612