Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
9 Months Ended
Sep. 30, 2022
Oct. 20, 2022
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Sep. 30, 2022  
Entity File Number 001-41309  
Entity Registrant Name FG Merger Corp.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 86-2462502  
Entity Address, Address Line One 104 S. Walnut Street,  
Entity Address, City or Town Itasca,  
Entity Address State Or Province IL  
Entity Address, Postal Zip Code 60143  
City Area Code 708  
Local Phone Number 870-7365  
Entity Current Reporting Status No  
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 Common Stock, Shares Outstanding   10,157,750
Entity Central Index Key 0001906133  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2022  
Document Fiscal Period Focus Q3  
Amendment Flag false  
Document Information [Line Items]    
Title of 12(b) Security Units  
Trading Symbol FGMCU  
Security Exchange Name NASDAQ  
Common stock    
Document Information [Line Items]    
Title of 12(b) Security Common stock  
Trading Symbol FGMC  
Security Exchange Name NASDAQ  
Document Information [Line Items]    
Title of 12(b) Security Warrants  
Trading Symbol FGMCW  
Security Exchange Name NASDAQ