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Components of other comprehensive (loss) income (Details)
$ in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2024
MXN ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
MXN ($)
Dec. 31, 2022
MXN ($)
Movement on Components of Other Comprehensive (Loss) Income [Abstract]        
Unrealized (loss) gain on equity investments at fair value, net of deferred taxes $ 3,485,814 $ 172 $ (967,609) $ (4,707,276)
Translation effect of foreign entities 62,171,364   (41,548,455) (35,114,722)
Translation effect by discontinued operations 0 0 0 5,193,281
Remeasurement of defined benefit plan, net of deferred taxes (27,872,099) (1,375) (3,769,565) (4,305,716)
Asset's revaluation surplus net of deferred taxes 1,659,337 82 868,456 0
Total other comprehensive (loss) income items for the year, net of deferred taxes 39,444,416 $ 1,945 (45,417,173) (38,934,433)
Controlling Interest [Member]        
Movement on Components of Other Comprehensive (Loss) Income [Abstract]        
Unrealized (loss) gain on equity investments at fair value, net of deferred taxes 3,485,814   (967,609) (4,707,276)
Translation effect of foreign entities 55,098,397   (37,399,680) (31,086,965)
Translation effect by discontinued operations 0   0 5,193,281
Remeasurement of defined benefit plan, net of deferred taxes (27,929,881)   (3,662,102) (4,599,407)
Asset's revaluation surplus net of deferred taxes 945,822   497,628 0
Non-controlling interest of the items above $ 7,844,264   $ (3,885,410) $ (3,734,066)