XML 204 R158.htm IDEA: XBRL DOCUMENT v3.19.1

Income Taxes - Schedule of Reconciliation Between Actual Income Tax Expense and Amount Computed by Applying Statutory Tax Rate (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reconciliation of Effective Tax Rate [Line Items]
Statutory tax rate in Mexico	30.00%	30.00%	30.00%
Mexico [member]
Reconciliation of Effective Tax Rate [Line Items]
Statutory tax rate in Mexico	30.00%	30.00%	30.00%

X

- Definition

Reconciliation of effective tax rate.

+ References

No definition available.

+ Details

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Namespace Prefix:	cx_
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Balance Type:	na
Period Type:	duration

X

- Definition

The applicable income tax rate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2018-01-01
-Paragraph 81
-Subparagraph c
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_c_ii&doctype=Standard
-URIDate 2018-03-16

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=country_MX
Namespace Prefix:
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Balance Type:
Period Type: