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Cover - USD ($)
$ in Millions
 12 Months Ended
Jul. 31, 2025
Oct. 27, 2025
Jan. 31, 2025
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Financial Statement Error Correction [Flag] false    
Entity Interactive Data Current Yes    
ICFR Auditor Attestation Flag false    
Amendment Flag false    
Document Period End Date Jul. 31, 2025    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Documents Incorporated by Reference [Text Block]

The definitive proxy statement relating to the registrant’s Annual Meeting of Stockholders, to be held January 8, 2026, is incorporated by reference into Part III of this Form 10-K to the extent described therein.

    
Entity Information [Line Items]      
Entity Registrant Name RAFAEL HOLDINGS, INC.    
Entity Central Index Key 0001713863    
Entity File Number 000-55863    
Entity Tax Identification Number 82-2296593    
Entity Incorporation, State or Country Code DE    
Current Fiscal Year End Date --07-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Shell Company false    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Public Float     $ 38.6
Entity Contact Personnel [Line Items]      
Entity Address, Address Line One 520 Broad Street    
Entity Address, City or Town Newark    
Entity Address, State or Province NJ    
Entity Address, Postal Zip Code 07102    
Entity Phone Fax Numbers [Line Items]      
City Area Code (212)    
Local Phone Number 658-1450    
Class B common stock, par value $0.01 per share      
Entity Listings [Line Items]      
Title of 12(b) Security Class B common stock, par value $0.01 per share    
Trading Symbol RFL    
Security Exchange Name NYSE    
Warrants to purchase Class B common stock      
Entity Listings [Line Items]      
Title of 12(b) Security Warrants to purchase Class B common stock    
Trading Symbol RFL-W    
Security Exchange Name NYSEAMER    
Class A Common Stock      
Entity Listings [Line Items]      
Entity Common Stock, Shares Outstanding   787,163  
Class B Common Stock      
Entity Listings [Line Items]      
Entity Common Stock, Shares Outstanding   50,983,641