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Financial Instruments - Additional Information - Credit Agreement, Facilities Agreement and Financing Agreement (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 23, 2021
Oct. 29, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2017
Jul. 19, 2017
Disclosure of detailed information about financial instruments [line items]                
Repayments of current borrowings     $ 2,420 $ 5,897 $ 4,572      
Total adjustment of the interest rate margin description     interest rate margin of plus or minus 5 basis points          
Borrowings     $ 6,971 $ 7,379 $ 9,339 $ 9,365    
London Inter bank Offered Rate LIBOR [Member]                
Disclosure of detailed information about financial instruments [line items]                
Interest rate     4.77% 0.21%        
EuroInterBankOfferedRate [Member]                
Disclosure of detailed information about financial instruments [line items]                
Interest rate     2.13% (0.57%)        
Interbank Equilibrium Interest Rate [Member]                
Disclosure of detailed information about financial instruments [line items]                
Interest rate     10.77% 5.72%        
Two Thousand Twenty One Credit Agreement [Member]                
Disclosure of detailed information about financial instruments [line items]                
Repayments of current borrowings   $ 3,250            
Line of credit ,Interest basis Points     25 days          
Line of credit Leverage Ratio Description     2.25 times in the lower end to greater than 3.25          
Borrowings     $ 1,800 $ 1,500        
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   1,500            
Line of credit ,Expiration period     5 years          
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   $ 1,750            
Line of credit ,Expiration period     5 years          
Two Thousand Twenty One Credit Agreement [Member] | Revolving Credit Facility [Member]                
Disclosure of detailed information about financial instruments [line items]                
Borrowings     $ 300          
CEMEX Holdings Philippines, Inc. [member]                
Disclosure of detailed information about financial instruments [line items]                
Maximum capital expenditure       500        
CEMEX Latam Holdings, S.A [member]                
Disclosure of detailed information about financial instruments [line items]                
Maximum capital expenditure       1,500        
Acquisitions and investments in joint ventures       $ 400        
Mexico, Pesos                
Disclosure of detailed information about financial instruments [line items]                
Interest rate     12.20% 7.20%        
Repayments of current borrowings $ 5,231              
Borrowings     $ 267 $ 254        
Mexico, Pesos | Two Thousand Twenty One Credit Agreement [Member]                
Disclosure of detailed information about financial instruments [line items]                
Borrowings     5,231          
BorrowingsReportingCurrencyDenominatedValue     $ 268 $ 255        
2017 Credit Agreement [member]                
Disclosure of detailed information about financial instruments [line items]                
Bank indebtedness               $ 4,050
2014 Credit Agreement [member]                
Disclosure of detailed information about financial instruments [line items]                
Bank indebtedness             $ 3,680  
Bottom of range [member] | Two Thousand Twenty One Credit Agreement [Member]                
Disclosure of detailed information about financial instruments [line items]                
Line of credit ,Interest basis Points     100 days          
Bottom of range [member] | Credit agreement [member]                
Disclosure of detailed information about financial instruments [line items]                
Interest rate     3.38%          
Top of range [member] | Two Thousand Twenty One Credit Agreement [Member]                
Disclosure of detailed information about financial instruments [line items]                
Line of credit ,Interest basis Points     175 days          
Top of range [member] | Credit agreement [member]                
Disclosure of detailed information about financial instruments [line items]                
Interest rate     5.65%