v3.26.1
Cover - shares
 6 Months Ended
Jun. 30, 2026
Aug. 10, 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 FUTURECORP SPACE ACQUISITION 1  
Entity Central Index Key 0002131853  
Entity File Number 001-43330  
Entity Tax Identification Number 98-1935958  
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 Address, Address Line One 8605 Santa Monica Blvd.  
Entity Address, Address Line Two #54207  
Entity Address, City or Town Los Angeles  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 90069  
City Area Code (213)  
Local Phone Number 524-9594  
Units, each consisting of one Class A Ordinary Share 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 and one-half of one redeemable warrant  
Trading Symbol FTRAU  
Security Exchange Name NYSE  
Class A Ordinary Shares, par value $0.0001 per share    
Document Information [Line Items]    
Title of 12(b) Security Class A Ordinary Shares, par value $0.0001 per share  
Trading Symbol FTRA  
Security Exchange Name NYSE  
Redeemable warrants, each whole warrant exercisable for one Class A Ordinary Share at an exercise price of $11.50 per share    
Document Information [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 FTRAUW  
Security Exchange Name NYSE  
Class A Ordinary Shares    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   23,000,000
Class B Ordinary Shares    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   5,750,000