Document and Entity Information
| Document and Entity Information | Aug. 29, 2024 |
| Document And Entity Information [Line Items] | |
| Entity Address, Region | GRAND CAYMAN |
| Amendment Flag | false |
| Entity Central Index Key | 0001875493 |
| Document Type | 8-K |
| Document Period End Date | Aug. 29, 2024 |
| Entity Registrant Name | CSLM Acquisition Corp. |
| Entity Incorporation State Country Code | E9 |
| Entity File Number | 001-41219 |
| Entity Tax Identification Number | 98-1602789 |
| Entity Address, Address Line One | 2400 E. Commercial Boulevard |
| Entity Address, Address Line Two | Suite 900 |
| Entity Address, City or Town | Ft. Lauderdale |
| Entity Address, State or Province | FL |
| Entity Address, Postal Zip Code | 33308 |
| City Area Code | (954) |
| Local Phone Number | 315-9381 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Units Each Consisting Of One Class A Ordinary Share One Right And One Half Of One Redeemable Warrant [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Units, each consisting of one Class A ordinary share, one right and one-half of one redeemable warrant |
| Trading Symbol | CSLMU |
| Security Exchange Name | NASDAQ |
| Class A Ordinary Shares Par Value 0.0001 Per Share 2 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Class A ordinary shares, par value $0.0001 per share |
| Trading Symbol | CSLM |
| Security Exchange Name | NASDAQ |
| Redeemable Warrants Each Whole Warrant Exercisable For One Class A Ordinary Share At An Exercise Price Of 11.502 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Redeemable warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50 |
| Trading Symbol | CSLMW |
| Security Exchange Name | NASDAQ |
| Rights To Acquire One Tenth Of One Class A Ordinary Share 1 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Rights to acquire one-tenth of one Class A ordinary share |
| Trading Symbol | CSLMR |
| Security Exchange Name | NASDAQ |