v3.26.3
Cover - shares
 7 Months Ended
Sep. 30, 2026
Nov. 10, 2026
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Entity Central Index Key 0002128462  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q3  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2026  
Document Transition Report false  
Entity File Number 001-43469  
Entity Registrant Name Three Lions Acquisition Corp.  
Entity Incorporation, State or Country Code E9  
Current Fiscal Year End Date --12-31  
Entity Tax Identification Number 00-0000000  
Entity Address, Address Line One 888 Prospect Street  
Entity Address, City or Town La Jolla  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 92037  
City Area Code 917  
Local Phone Number 822-8328  
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  
Entity Ex Transition Period false  
Entity Shell Company true  
Entity Common Stock, Shares Outstanding   13,933,333
Inception Date Mar. 10, 2026  
Units, each consisting of one ordinary share, par value $0.0001 per share, and one-half of one warrant [Member]    
Document Information [Line Items]    
Title of 12(b) Security Units, each consisting of one ordinary share, par value $0.0001 per share, and one-half of one warrant  
Trading Symbol TLACU  
Security Exchange Name NASDAQ  
Ordinary shares, par value $0.0001 per share [Member]    
Document Information [Line Items]    
Title of 12(b) Security Ordinary shares, par value $0.0001 per share  
Trading Symbol TLAC  
Security Exchange Name NASDAQ  
Warrants, each whole warrant exercisable for one ordinary share at an exercise price of $11.50 [Member]    
Document Information [Line Items]    
Title of 12(b) Security Warrants, each whole warrant exercisable for one ordinary share at an exercise price of $11.50  
Trading Symbol TLACW  
Security Exchange Name NASDAQ