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Legal Proceedings - Additional Information (Detail)
shares in Thousands, $ in Thousands, $ in Millions
 1 Months Ended 12 Months Ended
Apr. 12, 2019
Jul. 13, 2013
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2016
MXN ($)
Disclosure of Commitments and Contingencies [Line Items]              
Lease contract for a period   5 years 21 years        
Extended long term lease contract period     10 years        
Cash advances by CEMEX Colombia           $ 13,400  
Interest for advances           1,200  
Purchase of the assets related to the project in Colombian pesos     $ 15,100     3,000,750  
Impairment loss     306,000 $ 64,000 $ 23,000    
Colombian Peso [member]              
Disclosure of Commitments and Contingencies [Line Items]              
One Time Initial Payment     1,500 $ 1,500      
Excluding MOU and the Land MOU [member]              
Disclosure of Commitments and Contingencies [Line Items]              
Impairment loss           $ 22,500 $ 13.4
CI Calizas [member]              
Disclosure of Commitments and Contingencies [Line Items]              
Percentage of entity's revenue 0.90%            
Zomam [member]              
Disclosure of Commitments and Contingencies [Line Items]              
Percentage of entity's revenue 0.80%            
Concentration Risk Percentage 0.30%            
Assets Contribution     $ 43,000        
CEMEX Colombia [member]              
Disclosure of Commitments and Contingencies [Line Items]              
Number of Raw Materials Used For Production | shares     990        
Annual Lease Payment     $ 15        
Bottom of range [member]              
Disclosure of Commitments and Contingencies [Line Items]              
Expiration of property over the aforementioned assets     10 years        
Top of range [member]              
Disclosure of Commitments and Contingencies [Line Items]              
Expiration of property over the aforementioned assets     15 years