Commitments and Contingencies (Details Narrative) - USD ($)	1 Months Ended	12 Months Ended
	Aug. 22, 2017	Nov. 16, 2012	Jul. 31, 2012	Jul. 31, 2018	Jul. 31, 2011
Commitments and Contingencies	<p style="text-align: justify"><font style="font-size: 10pt">The letter from AEXG counsel claimed that Generex’s acceptance of $3,000,000 in financing form Pharma Trials, LLC, in March 2017, violated the provisions of the MOU prohibiting Generex from seeking other financing, with certain exceptions, for a period of 60 days after execution of the MOU. AEXG has demanded at least $210,000 in cash and 84,000 warrants for Generex stock convertible at $2.50 per share, for attorney’ fees and costs.  Generex management believes the Pharma Trials, LLC Financing was not subject to the prohibitions because the representative of Pharma Trials, LLC was a director of Generex, and for other reasons.</font></p>
Rental payments, current year				$ 69,022
Rental Payment, 2020				82,469
Rental payment, 2021				$ 9,306
Damages for Unpaid Invoices
Value of damages sought			$ 429,000
Lawsuit filing date			31-Dec-11
Name of Plaintiff			Vendor
Settlement of litigation		$ 125,000
Interest per annum, failure to pay settlement			3.00%
Fixed cost per annum, failure to pay settlement			$ 25,000
Breach of contract and detinue
Counterclaim proceeding					$ 200,000