v3.26.1
Cover - shares
3 Months Ended
Mar. 31, 2026
May 12, 2026
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Mar. 31, 2026  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --12-31  
Entity File Number 001-42891  
Entity Registrant Name AI Infrastructure Acquisition Corp.  
Entity Central Index Key 0002073553  
Entity Tax Identification Number 98-1926650  
Entity Incorporation, State or Country Code E9  
Entity Address, Address Line One 10845 Griffith Peak Drive  
Entity Address, Address Line Two Suite 200  
Entity Address, City or Town Las Vegas  
Entity Address, State or Province NV  
Entity Address, Postal Zip Code 89135  
City Area Code (702)  
Local Phone Number 747-4000  
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  
Elected Not To Use the Extended Transition Period false  
Entity Shell Company true  
Entity Information, Former Legal or Registered Name Not Applicable  
Units, Each Consisting of One Class A Ordinary Share and One Right [Member]    
Title of 12(b) Security Units, each consisting of one Class A ordinary share and one right  
Trading Symbol AIIA U  
Security Exchange Name NYSE  
Class A Ordinary Shares, Par Value $0.0001 Per Share [Member]    
Title of 12(b) Security Class A ordinary shares, par value $0.0001 per share  
Trading Symbol AIIA  
Security Exchange Name NYSE  
Rights, Each Right Entitling the Holder to Receive One-fifth (1/5) of One Class A Ordinary Share [Member]    
Title of 12(b) Security Rights, each right entitling the holder to receive one-fifth (1/5) of one Class A ordinary share  
Trading Symbol AIIA R  
Security Exchange Name NYSE  
Common Class A [Member]    
Entity Common Stock, Shares Outstanding   14,690,000
Common Class B [Member]    
Entity Common Stock, Shares Outstanding   4,600,000