v3.26.1
Description of Organization and Business Operations (Details) - USD ($)
 6 Months Ended
May 01, 2026
Jun. 30, 2026
Jan. 13, 2026
Description of Organization and Business Operations [Line Items]      
Percentage of aggregate shares   15.00%  
Working capital   $ 425,904  
Cash underwriting fee   7,050,000  
Cash   1,238,941
Transaction costs   $ 22,165,490  
Fair market value percentage   80.00%  
Maturity days   185 days  
Deferred underwriting fee   $ 14,087,500  
Gross proceeds from sale of private placement   $ 9,050,000  
Business days   20 days  
Underwriters reimbursement amount   $ 1,000,000  
Federal excise tax   1.00%  
Other offering cost   $ 1,027,990  
Interest to pay distribution expense   $ 100,000  
Public Warrant [Member]      
Description of Organization and Business Operations [Line Items]      
Number of redeemable warrant 1    
Number of public shares 1    
Number of ordinary shares 1    
Public Share [Member]      
Description of Organization and Business Operations [Line Items]      
Number of public shares 1    
Public shares redemption percentage   100.00%  
Class A Ordinary Shares [Member]      
Description of Organization and Business Operations [Line Items]      
Warrant purchase price per share $ 11.5    
Number of ordinary shares 1    
Business Combination Agreement [Member] | Public Share [Member]      
Description of Organization and Business Operations [Line Items]      
Share issued price per share $ 10    
Post-Business Combination [Member]      
Description of Organization and Business Operations [Line Items]      
Acquires percentage   50.00%  
IPO [Member] | Public Share [Member]      
Description of Organization and Business Operations [Line Items]      
Share issued price per share $ 10    
Gross proceeds from initial public offering $ 402,500,000    
IPO [Member] | GRAIL Securities [Member]      
Description of Organization and Business Operations [Line Items]      
Share issued price per share $ 10    
Gross proceeds from initial public offering $ 402,500,000    
Number of initial public offering shares 40,250,000    
Over-Allotment Option [Member] | GRAIL Securities [Member]      
Description of Organization and Business Operations [Line Items]      
Number of initial public offering shares 5,250,000    
Private Placement GRAIL Securities [Member]      
Description of Organization and Business Operations [Line Items]      
Share issued price per share $ 10    
Gross proceeds from sale of private placement $ 9,050,000    
Sale of aggregate shares 905,000 905,000  
Private Placement GRAIL Securities [Member] | Class A Ordinary Shares [Member]      
Description of Organization and Business Operations [Line Items]      
Share issued price per share   $ 11.5  
Number of ordinary shares   1  
Trust Account [Member] | Public Share [Member]      
Description of Organization and Business Operations [Line Items]      
Share issued price per share $ 10    
Trust Account [Member] | Business Combination Agreement [Member] | Public Share [Member]      
Description of Organization and Business Operations [Line Items]      
Share issued price per share $ 10