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Description of Business and Summary of Significant Accounting Policies (Details) - Schedule of all majority-owned subsidiaries are consolidated
 12 Months Ended
Jul. 31, 2022
Rafael Holdings, Inc. [Member]  
Condensed Financial Statements, Captions [Line Items]  
Country of Incorporation United States – Delaware
Percentage Owned 100.00%
Broad Atlantic Associates, LLC [Member]  
Condensed Financial Statements, Captions [Line Items]  
Country of Incorporation United States – Delaware
Percentage Owned 100.00%
IDT R.E. Holdings Ltd. [Member]  
Condensed Financial Statements, Captions [Line Items]  
Country of Incorporation Israel
Percentage Owned 100.00%
Rafael Holdings Realty, Inc. [Member]  
Condensed Financial Statements, Captions [Line Items]  
Country of Incorporation United States – Delaware
Percentage Owned 100.00%
Barer Institute, Inc. [Member]  
Condensed Financial Statements, Captions [Line Items]  
Country of Incorporation United States – Delaware
Percentage Owned 100.00%
Hillview Avenue Realty, JV [Member]  
Condensed Financial Statements, Captions [Line Items]  
Country of Incorporation United States – Delaware
Percentage Owned 100.00%
Hillview Avenue Realty, LLC [Member]  
Condensed Financial Statements, Captions [Line Items]  
Country of Incorporation United States – Delaware
Percentage Owned 100.00%
Rafael Medical Devices, Inc. [Member]  
Condensed Financial Statements, Captions [Line Items]  
Country of Incorporation United States – Delaware
Percentage Owned 100.00%
The Barer Institute, LLC [Member]  
Condensed Financial Statements, Captions [Line Items]  
Country of Incorporation United States – Delaware
Percentage Owned 100.00%
Levco Pharmaceuticals Ltd. [Member]  
Condensed Financial Statements, Captions [Line Items]  
Country of Incorporation Israel
Percentage Owned 95.00% [1]
Farber Partners, LLC [Member]  
Condensed Financial Statements, Captions [Line Items]  
Country of Incorporation United States – Delaware
Percentage Owned 93.00%
Pharma Holdings, LLC [Member]  
Condensed Financial Statements, Captions [Line Items]  
Country of Incorporation United States – Delaware
Percentage Owned 90.00%
LipoMedix Pharmaceuticals Ltd. [Member]  
Condensed Financial Statements, Captions [Line Items]  
Country of Incorporation Israel
Percentage Owned 84.00%
Altira Capital & Consulting, LLC [Member]  
Condensed Financial Statements, Captions [Line Items]  
Country of Incorporation United States – Delaware
Percentage Owned 67.00%
CS Pharma Holdings, LLC [Member]  
Condensed Financial Statements, Captions [Line Items]  
Country of Incorporation United States – Delaware [2]
Percentage Owned 45.00%
[1] During Fiscal 2022, we discontinued further material investment in Levco.
[2] 50% of CS Pharma Holdings, LLC is owned by Pharma Holdings, LLC. We have a 90% ownership in Pharma Holdings, LLC and, therefore, an effective 45% interest in CS Pharma Holdings, LLC. The Company, along with CS Pharma and Pharma Holdings, collectively own securities representing 51% of the outstanding capital stock of Cornerstone Pharmaceuticals and 41% of the capital stock on a fully diluted basis (excluding the remainder of the Warrant). Refer to Note 3 for further details.