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Property, Machinery and Equipment, Net and Assets For The Right-Of-Use, Net - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of quantitative information about right-of-use assets [line items]      
Impairment losses $ 306 $ 64 $ 23
United States [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
Impairment losses 76 6 13
EMEAA [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
Impairment losses 189    
United Kingdom [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
Impairment losses 39    
Puerto Rico [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
Impairment losses 20 52  
Cemex [Member]      
Disclosure of quantitative information about right-of-use assets [line items]      
Rental expense $ 97 $ 104 $ 89