Income Taxes (Details Narrative) - USD ($)	9 Months Ended	12 Months Ended
	Apr. 30, 2021	Jul. 31, 2020
Pre-tax gain or (loss) arising from domestic operations	$ (26,903,655)	$ (34,291,142)
Pre-tax (losses) arising from foreign operations	(6,708)	$ 59,049
NOL carryforwards	230,400,000
Decrease in deferred tax assets	78,000,000
Generex Pharmaceuticals
NOL carryforwards	34,400,000
NGIO
NOL carryforwards	35,700,000
Regentys
NOL carryforwards	6,800,000
Olaregen
NOL carryforwards	4,800,000
Veneto
NOL carryforwards	$ 11,400,000