v3.26.1
Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2025
Mar. 30, 2026
Jun. 30, 2025
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Document Transition Report false    
Entity File Number 001-42451    
Entity Registrant Name TRANSLATIONAL DEVELOPMENT ACQUISITION CORP.    
Entity Incorporation, State or Country Code E9    
Entity Tax Identification Number 00-0000000    
Entity Address, Address Line One 52 E. 83rd Street    
Entity Address, City or Town New York    
Entity Address State Or Province NY    
Entity Address, Postal Zip Code 10028    
City Area Code 917    
Local Phone Number 979-3072    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
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    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company true    
Entity Public Float     $ 177,675,000
Entity Central Index Key 0001926599    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Amendment Flag false    
Auditor Name WithumSmith+Brown, PC    
Auditor Location New York, New York    
Auditor Firm ID 100    
Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-half of one redeemable warrant      
Document Information [Line Items]      
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 TDACU    
Security Exchange Name NASDAQ    
Class A ordinary shares, $0.0001 par value per share      
Document Information [Line Items]      
Title of 12(b) Security Class A ordinary shares, $0.0001 par value per share    
Trading Symbol TDAC    
Security Exchange Name NASDAQ    
Entity Common Stock, Shares Outstanding   17,250,000  
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      
Document Information [Line Items]      
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 TDACW    
Security Exchange Name NASDAQ    
Class B ordinary shares      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   4,657,500