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Executive Share-based Compensation - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of Terms and Conditions of Share-based Payment Arrangement [Line Items]      
Commitment payments in cash $ 0 $ 0  
Decrease in other equity reserves $ 55 61 $ 47
ADSs Based On The Service Of The Executives [Member] | Executive Officer [Member]      
Disclosure of Terms and Conditions of Share-based Payment Arrangement [Line Items]      
Share-based compensation program service period 4 years    
Share-based compensation annual grant percentage 25.00%    
CPO [Member] | Bottom of range [member]      
Disclosure of Terms and Conditions of Share-based Payment Arrangement [Line Items]      
Share-based compensation annual grant percentage 0.00%    
CPO [Member] | Top of range [member]      
Disclosure of Terms and Conditions of Share-based Payment Arrangement [Line Items]      
Share-based compensation annual grant percentage 200.00%    
CPO [Member] | Cemex Holdings Philippines, Inc. [member] | Vested [Member]      
Disclosure of Terms and Conditions of Share-based Payment Arrangement [Line Items]      
Decrease in other equity reserves $ (55) (61) (52)
Transfer to additional paid in capital from other equity reserves $ 55 $ 61 $ 52