v3.26.1
Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2026
Aug. 14, 2026
Document and Entity Information    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Entity File Number 001-42142  
Entity Registrant Name GRAF GLOBAL CORP.  
Entity Incorporation, State or Country Code KY  
Entity Tax Identification Number 00-0000000  
Entity Address, Address Line One 1790 Hughes Landing Blvd., Suite 400  
Entity Address, City or Town The Woodlands  
Entity Address State Or Province TX  
Entity Address, Postal Zip Code 77380  
City Area Code 310  
Local Phone Number 745-8669  
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  
Entity Ex Transition Period false  
Entity Shell Company true  
Entity Central Index Key 0001897463  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-half of one redeemable warrant    
Document and Entity Information    
Title of 12(b) Security Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-half of one redeemable warrant  
Trading Symbol TONT U  
Security Exchange Name NYSE  
Class A ordinary shares, par value $0.0001 per share    
Document and Entity Information    
Title of 12(b) Security Class A ordinary shares, par value $0.0001 per share  
Trading Symbol TONT  
Security Exchange Name NYSE  
Entity Common Stock, Shares Outstanding   14,159,632
Warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50 per share    
Document and Entity Information    
Title of 12(b) Security Warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50 per share  
Trading Symbol TONT WS  
Security Exchange Name NYSE  
Class B Ordinary Shares    
Document and Entity Information    
Entity Common Stock, Shares Outstanding   1