v3.26.1
Cover - shares
6 Months Ended
Jun. 30, 2026
Aug. 12, 2026
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Jun. 30, 2026  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --12-31  
Entity File Number 001-42818  
Entity Registrant Name CSLM DIGITAL ASSET ACQUISITION CORP III, LTD  
Entity Central Index Key 0002068454  
Entity Tax Identification Number 00-0000000  
Entity Incorporation, State or Country Code E9  
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  
Entity Current Reporting Status No  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Elected Not To Use the Extended Transition Period false  
Entity Shell Company true  
Units, each consisting of one Class A ordinary share, par value $0.0001 per share, and one-half of one redeemable warrant    
Title of 12(b) Security Units, each consisting of one Class A ordinary share, par value $0.0001 per share, and one-half of one redeemable warrant  
Trading Symbol KOYNU  
Security Exchange Name NASDAQ  
Class A ordinary shares, par value $0.0001 per share    
Title of 12(b) Security Class A ordinary shares, par value $0.0001 per share  
Trading Symbol KOYN  
Security Exchange Name NASDAQ  
Warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50 per share    
Title of 12(b) Security Warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50 per share  
Trading Symbol KOYNW  
Security Exchange Name NASDAQ  
Common Class A [Member]    
Entity Common Stock, Shares Outstanding   23,891,250
Common Class B [Member]    
Entity Common Stock, Shares Outstanding   7,666,667