XML 137 R85.htm IDEA: XBRL DOCUMENT
v3.21.1

Trade Accounts Receivable, Net - Summary of Trade Accounts Receivable and Allowance for Expected Credit Loss (Detail) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | ---
Trade Accounts Receivables And Allowance For Expected Credit Loss [line items] |  |  |  |
Accounts receivable | $ 1,654 | $ 1,637 |  |
ECL allowance | 121 | $ 116 | $ 119 | $ 109
Mexico [member] |  |  |  |
Trade Accounts Receivables And Allowance For Expected Credit Loss [line items] |  |  |  |
Accounts receivable | 284 |  |  |
ECL allowance | $ 38 |  |  |
ECL average rate | 13.70% |  |  |
United States [member] |  |  |  |
Trade Accounts Receivables And Allowance For Expected Credit Loss [line items] |  |  |  |
Accounts receivable | $ 477 |  |  |
ECL allowance | $ 8 |  |  |
ECL average rate | 1.70% |  |  |
Europe, Middle East, Africa and Asia [member] |  |  |  |
Trade Accounts Receivables And Allowance For Expected Credit Loss [line items] |  |  |  |
Accounts receivable | $ 766 |  |  |
ECL allowance | $ 51 |  |  |
ECL average rate | 6.70% |  |  |
South, Central America And Caribbean [member] |  |  |  |
Trade Accounts Receivables And Allowance For Expected Credit Loss [line items] |  |  |  |
Accounts receivable | $ 94 |  |  |
ECL allowance | $ 20 |  |  |
ECL average rate | 21.30% |  |  |
Other country [member] |  |  |  |
Trade Accounts Receivables And Allowance For Expected Credit Loss [line items] |  |  |  |
Accounts receivable | $ 33 |  |  |
ECL allowance | $ 4 |  |  |
ECL average rate | 12.10% |  |  |

X
- Definition Trade Accounts Receivables And Allowance For Expected Credit Loss [line items] + References No definition available. + Details
Name: | cx_TradeAccountsReceivablesAndAllowanceForExpectedCreditLossLineItems
Namespace Prefix: | cx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of current trade receivables and current other receivables, gross. [Refer: Current trade receivables; Other current receivables] + References No definition available. + Details
Name: | cx_TradeAndOtherCurrentReceivablesGross
Namespace Prefix: | cx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2020-01-01 + Details
Name: | ifrs-full_AllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The rate of expected credit losses, calculated as percentage of the gross carrying amount. Expected credit losses are the weighted average of credit losses with the respective risks of a default occurring as the weights. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph IG20D -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_IG20D&doctype=Implementation%20Guidance -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph 35N -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_35N&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_ExpectedCreditLossRate
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=country_MX
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=cx_EuropeMiddleEastAfricaAndAsiaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=cx_SouthCentralAmericaAndCaribbeanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=cx_OtherCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |