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Commitments - Summary of Contractual Obligations (Parenthetical) (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Disclosure of Detailed Information About Borrowings [Line Items] |  |
Future minimum lease payments | $ 1,258 |
Estimated annual benefit payment period | next ten years | next ten years
1-3 years [Member] |  |
Disclosure of Detailed Information About Borrowings [Line Items] |  |
Future minimum lease payments | $ 325 |
3-5 Years [Member] |  |
Disclosure of Detailed Information About Borrowings [Line Items] |  |
Future minimum lease payments | 185 |
Later than four years and not later than five years [member] | Commitement For Digitization Serivces And Solutions [Member] | Neoris NV [member] |  |
Disclosure of Detailed Information About Borrowings [Line Items] |  |
Annual commitement with vendors value | 55 |
Later than four years and not later than five years [member] | Commitement With Six Vendors For Back Office Services [Member] |  |
Disclosure of Detailed Information About Borrowings [Line Items] |  |
Annual commitement with vendors value | $ 60 |

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- Definition Annual commitement with vendors value. + References No definition available. + Details
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Namespace Prefix: | cx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Benefits payments for next ten years. + References No definition available. + Details
Name: | cx_BenefitsPaymentsForNextTenYears
Namespace Prefix: | cx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Future minimum lease payments. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with 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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- Details
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Data Type: | na
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfContingentLiabilitiesAxis=cx_CommitementWithSixVendorsForBackOfficeServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |