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Revenue and Construction Contracts (Tables) | 12 Months Ended
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Dec. 31, 2020
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Summary of Revenue, After Sales and Eliminations Between Related Parties Resulting from Consolidation | CEMEX grants credit for terms ranging from 15 to 90 days depending on the type and risk of each customer. For the years ended December 31, 2020, 2019 and 2018, revenue is as follows:
|  |  |  |  | 2020 |  |  | 2019 |  |  | 2018 |
From the sale of goods associated to CEMEX’s main activities 1 |  | $ |  |  |  |  | 12,485 |  |  |  | 12,605 |  |  |  | 13,018 |
From the sale of services 2 |  |  |  |  |  |  | 145 |  |  |  | 147 |  |  |  | 159 |
From the sale of other goods and services 3 |  |  |  |  |  |  | 340 |  |  |  | 378 |  |  |  | 354 |
|  | $ |  |  |  |  | 12,970 |  |  |  | 13,130 |  |  |  | 13,531 |
Disclosure of recognised revenue from construction contracts | As of December 31, 2020 and 2019, amounts receivable for progress billings to and advances received from customers of construction contracts were not significant. For 2020, 2019 and 2018, revenues and costs related to construction contracts in progress were as follows:
|  |  |  |  | Accrued 1 |  |  | 2020 |  |  | 2019 |  |  | 2018 |
Revenue from construction contracts included in consolidated revenues 2 |  | $ |  |  |  |  | 112 |  |  |  | 101 |  |  |  | 79 |  |  |  | 72 |
Costs incurred in construction contracts included in consolidated cost of sales 3 |  |  |  |  |  |  | (111 | ) |  |  | (101 | ) |  |  | (79 | ) |  |  | (68 | )
Construction contracts gross operating profit |  | $ |  |  |  |  | 1 |  |  |  | — |  |  |  | — |  |  |  | 4 |
Summary of Changes in the Balance of Contract Liabilities with Customers | For the years ended December 31, 2020, 2019 and 2018 changes in the balance of contract liabilities with customers are as follows:
|  |  |  |  | 2020 |  |  | 2019 |  |  | 2018 |
Opening balance of contract liabilities with customers |  | $ |  |  |  |  | 225 |  |  |  | 234 |  |  |  | 237 |
Increase during the period for new transactions |  |  |  |  |  |  | 1,536 |  |  |  | 1,931 |  |  |  | 1,763 |
Decrease during the period for exercise or expiration of incentives |  |  |  |  |  |  | (1,561 | ) |  |  | (1,946 | ) |  |  | (1,762 | )
Currency translation effects |  |  |  |  |  |  | 1 |  |  |  | 6 |  |  |  | (4 | )
Closing balance of contract liabilities with customers |  | $ |  |  |  |  | 201 |  |  |  | 225 |  |  |  | 234 |

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- Definition The entire disclosure for revenue from contracts with customers. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2020-01-01 -Section Presentation -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2020-en-r&doctype=Standard&dita_xref=IFRS15_g105-109_TI -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2020-01-01 -Section Disclosure -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2020-en-r&doctype=Standard&dita_xref=IFRS15_g110-129_TI -URIDate 2020-01-01 + Details
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- Definition The explanation of the significant changes in the contract assets and the contract liabilities. [Refer: Contract assets; Contract liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2020-01-01 -Paragraph 118 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2020-en-r&anchor=para_118&doctype=Standard -URIDate 2020-01-01 + Details
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