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Financial Instruments - Additional Information - Credit Agreement, Facilities Agreement and Financing Agreement (Detail)
$ in Millions
 12 Months Ended
Oct. 30, 2023
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Disclosure of detailed information about financial instruments [line items]          
Long Term debt   $ 5,340 $ 6,203    
Borrowings   $ 5,529 $ 6,228 $ 6,971 $ 7,379
Securitization programs [member]          
Disclosure of detailed information about financial instruments [line items]          
Line of credit ,Interest basis Points   0.0005      
Secured Overnight Financing Rate [member]          
Disclosure of detailed information about financial instruments [line items]          
Interest rate   4.49% 5.38%    
2021 Credit Agreement [member] | Five year amortizing term loan [member]          
Disclosure of detailed information about financial instruments [line items]          
Line of credit ,Maximum Amount $ 1,000        
2021 Credit Agreement [member] | Five year committed Revolving Credit Facility [member]          
Disclosure of detailed information about financial instruments [line items]          
Line of credit ,Maximum Amount $ 2,000        
2023 Credit Agreement [member]          
Disclosure of detailed information about financial instruments [line items]          
Line of credit Leverage Ratio Description     3.75 times and a minimum Consolidated Coverage Ratio of 2.75    
Total adjustment of the interest rate margin description   interest rate margin of plus or minus 5 bps      
Borrowings   $ 1,000 $ 1,600    
Debt arising from bank loan   4,042      
Consolidated leverage ratio (times) 3.75        
Consolidated coverage ratio (times) 2.75        
2023 Credit Agreement [member] | Five year amortizing term loan [member]          
Disclosure of detailed information about financial instruments [line items]          
Line of credit ,Expiration period 5 years        
Reduction in line of credit maximum amount $ 500        
2023 Credit Agreement [member] | Five year committed Revolving Credit Facility [member]          
Disclosure of detailed information about financial instruments [line items]          
Line of credit ,Expiration period 5 years        
Increase in line of credit maximum amount $ 250        
2023 Credit Agreement [member] | Revolving Credit Facility [member]          
Disclosure of detailed information about financial instruments [line items]          
Borrowings     $ 600    
CEMEX Sab De CV Variable Interest Rate Two Thousand And Twenty Six Notes [member]          
Disclosure of detailed information about financial instruments [line items]          
Long Term debt   $ 144      
Line of credit ,Interest basis Points   0.0020      
CEMEX Sab De CV Fixed Rate Two Thousand And Thirty Notes [member]          
Disclosure of detailed information about financial instruments [line items]          
Long Term debt   $ 411      
Line of credit ,Interest basis Points   0.0025      
Bottom of range [member] | 2023 Credit Agreement [member]          
Disclosure of detailed information about financial instruments [line items]          
Line of credit ,Interest basis Points     0.0100    
Consolidated leverage ratio (times)     2.25    
Bottom of range [member] | Credit agreement [member]          
Disclosure of detailed information about financial instruments [line items]          
Interest rate   5.25%      
Top of range [member] | 2023 Credit Agreement [member]          
Disclosure of detailed information about financial instruments [line items]          
Line of credit ,Interest basis Points     0.0175    
Consolidated leverage ratio (times)     3.25    
Top of range [member] | Credit agreement [member]          
Disclosure of detailed information about financial instruments [line items]          
Interest rate   6.35%