XML 142 R90.htm IDEA: XBRL DOCUMENT
v3.21.1

Assets Held For Sale and Other Current Assets - Summary of Assets and liabilities Held for Sale (Detail) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Asset held for sale and discontinued operations [line items] |  |  |
Assets |  | $ 187 | $ 839
Liabilities |  | 6 | 37
Net assets |  | 181 | 802
White cement assets in Spain [member] |  |  |
Asset held for sale and discontinued operations [line items] |  |  |
Assets |  | 107 | 106
Net assets |  | 107 | 106
Kosmos' assets in the United States [member] |  |  |
Asset held for sale and discontinued operations [line items] |  |  |
Assets |  |  | 457
Liabilities |  |  | 14
Net assets |  |  | 443
Assets in the United Kingdom [member] |  |  |
Asset held for sale and discontinued operations [line items] |  |  |
Assets |  |  | 229
Liabilities |  |  | 23
Net assets |  |  | 206
Other assets held for sale [member] |  |  |
Asset held for sale and discontinued operations [line items] |  |  |
Assets | [1] | 80 | 47
Liabilities | [1] | 6 |
Net assets | [1] | $ 74 | $ 47
[1] | In 2020, includes assets and liabilities of $26 and $6, respectively, associated with a committed sale of certain assets in France negotiated in December 2020.

X
- Definition Asset held for sale and discontinued operations. + References No definition available. + Details
Name: | cx_AssetHeldForSaleAndDiscontinuedOperationsLineItems
Namespace Prefix: | cx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of assets and liabilities included in disposal groups classified as held for sale. [Refer: Liabilities; Disposal groups classified as held for sale [member]] + References No definition available. + Details
Name: | cx_NetAssetsLiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale
Namespace Prefix: | cx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of current assets other than non-current assets or disposal groups classified as held for sale or as held for distribution to owners. [Refer: Current assets; Disposal groups classified as held for sale [member]; Non-current assets or disposal groups classified as held for sale; Non-current assets or disposal groups classified as held for distribution to owners] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 66 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_66&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_CurrentAssetsOtherThanAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of liabilities included in disposal groups classified as held for sale. [Refer: Liabilities; Disposal groups classified as held for sale [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 5 -IssueDate 2020-01-01 -Paragraph 38 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2020-en-r&anchor=para_38&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph p -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_p&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis=cx_WhiteCementAssetsInSpainMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis=cx_KosmosAssetsInTheUnitedStatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis=cx_AssetsInTheUnitedKingdomMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis=cx_OtherAssetsHeldForSaleTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |