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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 ($)
Nov. 08, 2021
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Disclosure of detailed information about financial instruments [line items]            
Long Term debt     $ 6,203 $ 6,920    
Repayments of current borrowings     3,840 2,420 $ 5,897  
Borrowings     $ 6,228 $ 6,971 $ 7,379 $ 9,339
Securitization programs [member]            
Disclosure of detailed information about financial instruments [line items]            
Line of credit ,Interest basis Points     0.0005      
Interbank Equilibrium Interest Rate [Member]            
Disclosure of detailed information about financial instruments [line items]            
Interest rate     11.50% 10.77%    
Secured Overnight Financing Rate [Member]            
Disclosure of detailed information about financial instruments [line items]            
Interest rate     5.38%      
Two Thousand Twenty One Credit Agreement [Member]            
Disclosure of detailed information about financial instruments [line items]            
Repayments of current borrowings   $ 3,250        
Two Thousand Twenty One 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          
Two Thousand Twenty One 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          
Two Thousand Twenty Three 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     $ 1,600      
Debt arising from bank loan     3,876      
Consolidated leverage ratio 3.75%          
Consolidated coverage ratio 2.75%          
Two Thousand Twenty Three 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          
Two Thousand Twenty Three 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          
Reduction in line of credit maximum amount $ 250          
Two Thousand Twenty Three 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     $ 59      
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     $ 292      
Line of credit ,Interest basis Points     0.0025      
Bottom of range [member] | Two Thousand Twenty Three Credit Agreement [Member]            
Disclosure of detailed information about financial instruments [line items]            
Line of credit ,Interest basis Points     0.0100      
Consolidated leverage ratio     2.25%      
Bottom of range [member] | Credit agreement [member]            
Disclosure of detailed information about financial instruments [line items]            
Interest rate     5.36%      
Top of range [member] | Two Thousand Twenty Three Credit Agreement [Member]            
Disclosure of detailed information about financial instruments [line items]            
Line of credit ,Interest basis Points     0.0175      
Consolidated leverage ratio     3.25%      
Top of range [member] | Credit agreement [member]            
Disclosure of detailed information about financial instruments [line items]            
Interest rate     6.56%