v3.25.4
Document And Entity Information
9 Months Ended
Sep. 30, 2025
Document Information Line Items  
Entity Central Index Key 0001787518
Document Type S-1
Entity Registrant Name T3 Defense Inc.
Entity Incorporation, State or Country Code DE
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company true
Entity Ex Transition Period false
Amendment Flag false