v3.26.3
Cover - shares
 6 Months Ended
Jun. 30, 2026
Oct. 01, 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 001-43451  
Entity Registrant Name KARMAN LINE ACQUISITION CORP.  
Entity Central Index Key 0002134856  
Entity Tax Identification Number 00-0000000  
Entity Incorporation, State or Country Code E9  
Entity Address, Address Line One 1200 N. Federal Hwy  
Entity Address, Address Line Two Suite 200  
Entity Address, City or Town Boca Raton  
Entity Address, State or Province FL  
Entity Address, Postal Zip Code 33432  
City Area Code (212)  
Local Phone Number 207-0090  
Entity Current Reporting Status Yes  
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, $0.0001 par value, and one-half of one redeemable warrant    
Title of 12(b) Security Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-half of one redeemable warrant  
Trading Symbol XTERU  
Security Exchange Name NASDAQ  
Class A ordinary shares    
Title of 12(b) Security Class A ordinary shares included as part of the units  
Trading Symbol XTER  
Security Exchange Name NASDAQ  
Redeemable warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50    
Title of 12(b) Security Redeemable warrants included as part of the units, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50  
Trading Symbol XTERW  
Security Exchange Name NASDAQ  
Class A Ordinary Shares [Member]    
Entity Common Stock, Shares Outstanding   20,650,000
Class B Ordinary Shares [Member]    
Entity Common Stock, Shares Outstanding   6,666,667