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Business Combination,Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment - Summary of Balance sheet Information by Geographic Segment (Parenthetical) (Detail) - MXN ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure - Business Combination,Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment - Summary of Balance sheet Information by Geographic Segment [Abstract]
Capital expenditure incurred	$ 9,514	$ 12,676	$ 11,454

X

- Definition

Capital expenditures increase (decrease), property, plant and equipment.

+ References

No definition available.

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X

- Definition

Disclosure - Business Combination,Discontinued Operations, Sale of Other Disposal Groups and Selected Financial Information by Geographic Operating Segment - Summary of Balance sheet Information by Geographic Segment [Abstract]

+ References

No definition available.

+ Details

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Namespace Prefix:	cx_
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