v3.25.1
Cover - shares
 3 Months Ended
Mar. 31, 2025
May 13, 2025
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Amendment Flag false  
Document Period End Date Mar. 31, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q1  
Entity Information [Line Items]    
Entity Registrant Name Lomond Therapeutics Holdings, Inc.  
Entity Central Index Key 0001900520  
Entity File Number 000-56377  
Entity Tax Identification Number 87-2959575  
Entity Incorporation, State or Country Code DE  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Incorporation, Date of Incorporation Jan. 22, 2020  
Entity Contact Personnel [Line Items]    
Entity Address, Address Line One 8 The Green Ste 8490  
Entity Address, City or Town Dover  
Entity Address, State or Province DE  
Entity Address, Postal Zip Code 19901  
Entity Phone Fax Numbers [Line Items]    
City Area Code (212)  
Local Phone Number 739-6400  
Entity Listings [Line Items]    
No Trading Symbol Flag true  
Title of 12(g) Security Common Stock, $0.0001 par value per share  
Entity Common Stock, Shares Outstanding   32,198,214