Document And Entity Information	9 Months Ended
	Apr. 30, 2015	Jun. 15, 2015
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Apr. 30, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3
Entity Registrant Name	NON INVASIVE MONITORING SYSTEMS INC /FL/
Entity Central Index Key	0000720762
Current Fiscal Year End Date	--07-31
Entity Filer Category	Smaller Reporting Company
Trading Symbol	NIMU
Entity Common Stock, Shares Outstanding		79,007,423