Business valuation of an operation.

No definition available.

Name:	cx_BusinessValuationOfAnOperation
Namespace Prefix:	cx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Maximum amount authorized for share repurchase.

+ References

No definition available.

+ Details

Name:	cx_MaximumAmountAuthorizedForShareRepurchase
Namespace Prefix:	cx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage of issuance on subordinated note.

+ References

No definition available.

+ Details

Name:	cx_PercentageOfIssuanceOnSubordinatedNote
Namespace Prefix:	cx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Redemption of subordinated liabilities.

+ References

No definition available.

+ Details

Name:	cx_RedemptionOfSubordinatedLiabilities
Namespace Prefix:	cx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Redemption of subordinated liabilities premium percentage.

+ References

No definition available.

+ Details

Name:	cx_RedemptionOfSubordinatedLiabilitiesPremiumPercentage
Namespace Prefix:	cx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Subordinated notes redemption date.

+ References

No definition available.

+ Details

Name:	cx_SubordinatedNotesRedemptionDate
Namespace Prefix:	cx_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- 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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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of dividends proposed or declared after the reporting period but before financial statements are authorised for issue. Such dividends are not recognised as a liability at the end of the reporting period because no obligation exists at that time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 10
-IssueDate 2024-01-01
-Paragraph 13
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=10&code=ifrs-tx-2024-en-r&anchor=para_13&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 137
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_137_a&doctype=Standard
-URIDate 2024-03-27

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of liabilities that are subordinate to other liabilities with respect to claims.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_SubordinatedLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	ifrs-full_BorrowingsByNameAxis=cx_SubordinatedNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=cx_NinePointOneTwoFivePercentSubordinatedNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=cx_NonAdjustingEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=cx_DividendDeclared1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=cx_MaximumAmountAuthorizedForShareRepurchaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=cx_BusinessValuationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Subsequent Events - Additional Information (Detail) - USD ($) $ in Millions	Apr. 01, 2025	Mar. 26, 2025	Mar. 14, 2023	Jan. 30, 2025	Dec. 31, 2024	Dec. 31, 2023
Disclosure of non-adjusting events after reporting period [line items]
Subordinated liabilities					$ 1,986	$ 1,986
Subordinated Notes [Member]
Disclosure of non-adjusting events after reporting period [line items]
Percentage of issuance on subordinated note			9.125%
9.125% Subordinated Notes [Member]
Disclosure of non-adjusting events after reporting period [line items]
Redemption date	Apr. 10, 2025
Non adjusting event [Member]
Disclosure of non-adjusting events after reporting period [line items]
Percentage of issuance on subordinated note	9.125%
Redemption Of Subordinated Liabilities	$ 1,039
Redemption Of Subordinated Liabilities Premium Percentage	1.00%
Subordinated liabilities	$ 1,000
Dividend Declared [Member]
Disclosure of non-adjusting events after reporting period [line items]
Dividends proposed or declared before financial statements authorized for issue but not recognized as distribution to owners		$ 130
Maximum Amount Authorized For Share Repurchase [Member]
Disclosure of non-adjusting events after reporting period [line items]
Maximum amount authorized for share repurchase		$ 500
Business Valuation [Member]
Disclosure of non-adjusting events after reporting period [line items]
Business Valuation of an Operation				$ 928