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Financial Instruments - Additional Information - Credit Agreement, Facilities Agreement and Financing Agreement (Detail) $ in Millions |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Oct. 30, 2023 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Long Term debt |  | $ 5,340 | $ 6,203 |  |
Borrowings |  | $ 5,529 | $ 6,228 | $ 6,971 | $ 7,379
Securitization programs [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Line of credit ,Interest basis Points |  | 0.0005 |  |  |
Secured Overnight Financing Rate [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Interest rate |  | 4.49% | 5.38% |  |
2021 Credit Agreement [member] | Five year amortizing term loan [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Line of credit ,Maximum Amount | $ 1,000 |  |  |  |
2021 Credit Agreement [member] | Five year committed Revolving Credit Facility [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Line of credit ,Maximum Amount | $ 2,000 |  |  |  |
2023 Credit Agreement [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Line of credit Leverage Ratio Description |  |  | 3.75 times and a minimum Consolidated Coverage Ratio of 2.75 |  |
Total adjustment of the interest rate margin description |  | interest rate margin of plus or minus 5 bps |  |  |
Borrowings |  | $ 1,000 | $ 1,600 |  |
Debt arising from bank loan |  | 4,042 |  |  |
Consolidated leverage ratio (times) | 3.75 |  |  |  |
Consolidated coverage ratio (times) | 2.75 |  |  |  |
2023 Credit Agreement [member] | Five year amortizing term loan [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Line of credit ,Expiration period | 5 years |  |  |  |
Reduction in line of credit maximum amount | $ 500 |  |  |  |
2023 Credit Agreement [member] | Five year committed Revolving Credit Facility [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Line of credit ,Expiration period | 5 years |  |  |  |
Increase in line of credit maximum amount | $ 250 |  |  |  |
2023 Credit Agreement [member] | Revolving Credit Facility [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Borrowings |  |  | $ 600 |  |
CEMEX Sab De CV Variable Interest Rate Two Thousand And Twenty Six Notes [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Long Term debt |  | $ 144 |  |  |
Line of credit ,Interest basis Points |  | 0.0020 |  |  |
CEMEX Sab De CV Fixed Rate Two Thousand And Thirty Notes [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Long Term debt |  | $ 411 |  |  |
Line of credit ,Interest basis Points |  | 0.0025 |  |  |
Bottom of range [member] | 2023 Credit Agreement [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Line of credit ,Interest basis Points |  |  | 0.0100 |  |
Consolidated leverage ratio (times) |  |  | 2.25 |  |
Bottom of range [member] | Credit agreement [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Interest rate |  | 5.25% |  |  |
Top of range [member] | 2023 Credit Agreement [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Line of credit ,Interest basis Points |  |  | 0.0175 |  |
Consolidated leverage ratio (times) |  |  | 3.25 |  |
Top of range [member] | Credit agreement [member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Interest rate |  | 6.35% |  |  |

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