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SHAREHOLDERS' DEFICIT- Common and preferred shares (Details)
 6 Months Ended
Mar. 31, 2026
item
Vote
$ / shares
shares
Sep. 30, 2025
$ / shares
shares
Nov. 26, 2024
$ / shares
SHAREHOLDERS' DEFICIT      
Preferred shares, authorized 1,000,000 1,000,000  
Preferred shares, issued 0 0  
Preferred shares, outstanding 0 0  
Common shares, par value | $ / shares     $ 0.0001
Number of votes per share | Vote 1    
Number of classes of board of directors | item 3    
Term of board of directors 3 years    
Number of classes of board of directors eligible for election | item 1    
Cumulative voting percentage for appointment of directors 0.00%    
Minimum percentage of outstanding shares entitled to vote for appointment 50.00%    
Class A ordinary shares      
SHAREHOLDERS' DEFICIT      
Common shares, authorized 200,000,000 200,000,000  
Common shares, par value | $ / shares $ 0.0001 $ 0.0001  
Class A ordinary shares | Sponsor      
SHAREHOLDERS' DEFICIT      
Conversion of stock as percentage of outstanding common stock 20.00%    
Class A ordinary shares subject to redemption      
SHAREHOLDERS' DEFICIT      
Temporary equity, shares outstanding 23,000,000 23,000,000  
Class A ordinary shares not subject to redemption      
SHAREHOLDERS' DEFICIT      
Common shares, issued 660,000 660,000  
Common shares, outstanding 660,000 660,000  
Class B ordinary shares      
SHAREHOLDERS' DEFICIT      
Common shares, authorized 20,000,000 20,000,000  
Common shares, par value | $ / shares $ 0.0001 $ 0.0001  
Common shares, issued 5,750,000 5,750,000  
Common shares, outstanding 5,750,000 5,750,000  
Class B ordinary shares | Sponsor      
SHAREHOLDERS' DEFICIT      
Common stock, conversion ratio 1    
Class B ordinary shares | Sponsor | Minimum      
SHAREHOLDERS' DEFICIT      
Common stock, conversion ratio 1