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Related Parties - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of Transactions Between Related Parties [Line Items] |  |  |
Amount of compensation of CEMEX Board of Directors | $ 35 | $ 40 | $ 38
Performance Bonuses [Member] |  |  |
Disclosure of Transactions Between Related Parties [Line Items] |  |  |
Amount of compensation of CEMEX Board of Directors | 29 | 34 | 29
Executive Share-Based Compensation Programs [Member] |  |  |
Disclosure of Transactions Between Related Parties [Line Items] |  |  |
Amount of compensation of CEMEX Board of Directors | $ 6 | $ 6 | $ 9

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- Definition The amount of remuneration paid or payable to the entity's directors. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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- Details
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