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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
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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

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