v3.26.1
Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2026
Aug. 14, 2026
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 Jun. 30, 2026  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Entity Registrant Name INFLECTION POINT ACQUISITION CORP. V  
Entity Central Index Key 0002028355  
Entity File Number 001-42518  
Entity Tax Identification Number 00-0000000  
Entity Incorporation State Country Code E9  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
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 Address Address Line 1 167 Madison Ave  
Entity Address Address Line 2 Suite 205 #1017  
Entity Address City Or Town New York  
Entity Address State Or Province NY  
Entity Address Postal Zip Code 10016  
City Area Code (212)  
Local Phone Number 476-6908  
Class A Ordinary Shares    
Document Information [Line Items]    
Entity Common Stock Shares Outstanding   3,443,765
Class B Ordinary Shares    
Document Information [Line Items]    
Entity Common Stock Shares Outstanding   990,000
Units, each consisting of one Class A ordinary share and one right    
Document Information [Line Items]    
Security 12b Title Units, each consisting of one Class A ordinary share and one right  
Trading Symbol IPEXU  
Security Exchange Name NASDAQ  
Class A Ordinary Shares, par value $0.0001 per share    
Document Information [Line Items]    
Security 12b Title Class A Ordinary Shares, par value $0.0001 per share  
Trading Symbol IPEX  
Security Exchange Name NASDAQ  
Rights, each entitling the holder to one-fifth (1/5) of one Class A ordinary share upon the completion of the Company’s initial business combination    
Document Information [Line Items]    
Security 12b Title Rights, each entitling the holder to one-fifth (1/5) of one Class A ordinary share upon the completion of the Company’s initial business combination  
Trading Symbol IPEXR  
Security Exchange Name NASDAQ