XML 8 R1.htm IDEA: XBRL DOCUMENT v3.23.4
Document and Entity Information - USD ($)
 12 Months Ended
Sep. 30, 2023
Jan. 26, 2024
Mar. 31, 2023
Entity Listings [Line Items]      
Document Type 10-K/A    
Amendment Flag false    
Document Annual Report true    
Document Period End Date Sep. 30, 2023    
Current Fiscal Year End Date --09-30    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Document Transition Report false    
Entity File Number 1-35040    
Entity Registrant Name PHENIXFIN CORPORATION    
Entity Central Index Key 0001490349    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 27-4576073    
Entity Address, Address Line One 445 Park Avenue    
Entity Address, Address Line Two 10th Floor    
Entity Address, City or Town New York    
Entity Address, State or Province NY    
Entity Address, Postal Zip Code 10022    
City Area Code 212    
Local Phone Number 859-0390    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 60,578,642
Entity Common Stock, Shares Outstanding   2,060,490  
Auditor Firm ID 185    
Auditor Name KPMG LLP    
Auditor Location New York, New York    
Common Stock [Member]      
Entity Listings [Line Items]      
Title of 12(b) Security Common Stock, par value $0.001 per share    
Trading Symbol PFX    
Security Exchange Name NASDAQ    
5.25% Notes due 2028 [Member]      
Entity Listings [Line Items]      
Title of 12(b) Security 5.25% Notes due 2028    
Trading Symbol PFXNZ    
Security Exchange Name NASDAQ