XML 161 R109.htm IDEA: XBRL DOCUMENT v3.21.1

Goodwill and Intangible Assets, Net - Summary of Changes in intangible Asset (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of detailed information about intangible assets [line items]
Carrying amount of internal-use software	$ 213	$ 253
Computer software [member]
Disclosure of detailed information about intangible assets [line items]
Capitalized direct costs	$ 40	$ 102	$ 133

X

- Definition

Capitalised software development costs.

+ References

No definition available.

+ Details

Name:	cx_CapitalisedSoftwareDevelopmentCosts
Namespace Prefix:	cx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The amount of intangible assets representing computer software. [Refer: Intangible assets other than goodwill]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 38
-IssueDate 2020-01-01
-Paragraph 119
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_119_c&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_ComputerSoftware
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- 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

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

X

- Details

Name:	ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis=ifrs-full_ComputerSoftwareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: