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Income Taxes - Expiration of tax loss carry forwards (Details) - MXN ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Income Taxes      
Tax loss carryforwards for which deferred taxes were recognized $ 17,200,549    
Benefit from capital tax loss carryforwards derived from the disposal in 2014 of its investment in GSF 4,678,136 $ 4,469,799  
Tax loss carryforwards derived from disposal of GSF for which deferred tax assets were recognized 15,593,785    
Tax loss carryforwards of subsidiaries in South America, the United States and Europe 1,311,207    
2024      
Income Taxes      
Tax loss carryforwards for which deferred taxes were recognized 148,035    
2025      
Income Taxes      
Tax loss carryforwards for which deferred taxes were recognized 3,436,175    
2026      
Income Taxes      
Tax loss carryforwards for which deferred taxes were recognized 331,580    
2027      
Income Taxes      
Tax loss carryforwards for which deferred taxes were recognized 525,216    
2028      
Income Taxes      
Tax loss carryforwards for which deferred taxes were recognized 1,929,730    
Thereafter      
Income Taxes      
Tax loss carryforwards for which deferred taxes were recognized 10,829,813    
Expire between 2024 and 2033      
Income Taxes      
Unused tax loss carryforwards for which no deferred taxes were recognized 6,258,224    
Expire between 2024 and 2037      
Income Taxes      
Tax loss carryforwards of subsidiaries in South America, the United States and Europe 1,846,848    
Certain Mexican subsidiaries      
Income Taxes      
Utilized tax loss carry forwards 1,656,195 $ 11,944,218 $ 2,618,821
Benefit from capital tax loss carryforwards derived from the disposal in 2014 of its investment in GSF $ 15,593,785