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Goodwill and Intangible Assets, Net - Summary of Changes in Consolidated goodwill (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of reconciliation of changes in goodwill [abstract]      
Balance at beginning of period $ 8,506 [1] $ 9,562 $ 9,912
Impairment losses (440) (1,020)  
Business combinations (note 5.1) 5 2  
Reclassification to assets held for sale (notes 5.2, 5.3 and 14.1) (2) (9) (371)
Foreign currency translation effects (85) (29) 21
Balance at end of period $ 7,984 [1] $ 8,506 [1] $ 9,562
[1] This caption is primarily associated with Neoris N.V., CEMEX’s subsidiary involved in the sale of information technology and services.