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Trade Accounts Payable, Other Current Liabilities and Non-Current Liabilities - Additional Information (Detail) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Disclosure of Trade and other Payables [Abstract] |  |
Trade Payables toTrade Suppliers | $ 999 | $ 972
Number of Days for Average Payment Term | 92 days |
Balances on current accounts from customers | $ 0 | $ 0

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- Definition Disclosure of trade and other payables. + References No definition available. + Details
Name: | cx_DisclosureOfTradeAndOtherPayablesAbstract
Namespace Prefix: | cx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of days for average payment term. + References No definition available. + Details
Name: | cx_NumberOfDaysForAveragePaymentTerm
Namespace Prefix: | cx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Trade payables to trade suppliers. + References No definition available. + Details
Name: | cx_TradePayablesTotradeSuppliers
Namespace Prefix: | cx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of balances in customers' current accounts held by the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_BalancesOnCurrentAccountsFromCustomers
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant