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Stockholders' Equity - Additional Information (Detail)
$ in Millions
 1 Months Ended 12 Months Ended
Mar. 22, 2024
USD ($)
shares
Mar. 23, 2023
USD ($)
shares
Mar. 31, 2023
USD ($)
Jun. 30, 2021
USD ($)
Dec. 31, 2024
USD ($)
shares
Dec. 31, 2023
USD ($)
shares
Dec. 31, 2022
USD ($)
shares
Mar. 24, 2022
USD ($)
Disclosure of Classes of Share Capital [Line Items]                
Percentage of net income allocation toward legal reserve         5.00%      
Legal reserve         $ 87      
Non-controlling interest         301 $ 352    
Net income attributable to noncontroling interest         (21) (17) $ (27)  
Coupon payment on perpetual debentures         (2,756) (2,349)    
Issuance of subordinated notes           $ 992    
Dividend declared         120      
Dividend payables         30      
Parent [member]                
Disclosure of Classes of Share Capital [Line Items]                
Coupon payment on perpetual debentures         $ 3,149      
Mexican peso [Member]                
Disclosure of Classes of Share Capital [Line Items]                
Closing foreign exchange rate         20.83 16.97 19.5  
Shares Repurchase Program [Member]                
Disclosure of Classes of Share Capital [Line Items]                
Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners $ 120              
Treasury shares repurchase amount authorized $ 500 $ 500           $ 500
Treasury shares             $ 111  
Number of shares repurchased | shares 0         0 662,000,000  
Cancellation of number of treasury shares | shares   662,000,000            
Non-controlling Interest [member]                
Disclosure of Classes of Share Capital [Line Items]                
Non-controlling interest         $ 301 $ 352    
Net income attributable to noncontroling interest         21 17 $ 27  
Subordinated Notes [Member]                
Disclosure of Classes of Share Capital [Line Items]                
Coupon payment on perpetual debentures         $ 143 $ 120 $ 54  
Issuance of subordinated notes     $ 1,000 $ 1,000        
Percentage of issuance on subordinated note     9.125% 5.125%        
Proceeds from issuance of subordinated notes     $ 992 $ 994        
Cemex Holdings Philippines, Inc. [member]                
Disclosure of Classes of Share Capital [Line Items]                
Non-controlling interest ownership percentage           10.14%    
CEMEX Latam Holdings, S.A. [member]                
Disclosure of Classes of Share Capital [Line Items]                
Non-controlling interest ownership percentage         0.16% 0.50%    
Caribbean TCL [member] | Trinidad Cement Limited [member]                
Disclosure of Classes of Share Capital [Line Items]                
Non-controlling interest ownership percentage         30.17% 30.17%    
CPO [Member] | Parent [member]                
Disclosure of Classes of Share Capital [Line Items]                
Treasury shares         $ 12 $ 16    
Investment in shares held by the subsidiary | shares         20,541,277 20,541,277    
American Depository Shares [Member] | Shares Repurchase Program [Member]                
Disclosure of Classes of Share Capital [Line Items]                
Number of shares repurchased | shares             22,100,000  
Cancellation of number of treasury shares | shares   22,100,000