v3.25.1
Cover - shares
 3 Months Ended
Mar. 31, 2025
Jun. 06, 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 Texas Ventures Acquisition III Corp  
Entity Central Index Key 0002033991  
Entity File Number 001-42609  
Entity Tax Identification Number 98-1802457  
Entity Incorporation, State or Country Code E9  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status No  
Entity Shell Company true  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Contact Personnel [Line Items]    
Entity Address, Address Line One 5090 Richmond Ave  
Entity Address, Address Line Two Suite 319  
Entity Address, City or Town Houston  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 77056  
Entity Phone Fax Numbers [Line Items]    
City Area Code (713)  
Local Phone Number 599-1300  
Units, each consisting of one Class A ordinary share and one-half of one redeemable warrant    
Entity Listings [Line Items]    
Title of 12(b) Security Units, each consisting of one Class A ordinary share and one-half of one redeemable warrant  
Trading Symbol TVACU  
Security Exchange Name NASDAQ  
Class A ordinary shares, par value $0.0001 par value    
Entity Listings [Line Items]    
Title of 12(b) Security Class A ordinary shares, par value $0.0001 par value  
Trading Symbol TVA  
Security Exchange Name NASDAQ  
Redeemable Warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50 per share    
Entity Listings [Line Items]    
Title of 12(b) Security Redeemable Warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50 per share  
Trading Symbol TVACW  
Security Exchange Name NASDAQ  
Class A Ordinary Shares    
Entity Listings [Line Items]    
Entity Common Stock, Shares Outstanding   22,500,000
Class B Ordinary Shares    
Entity Listings [Line Items]    
Entity Common Stock, Shares Outstanding   7,500,000