v3.26.1
Cover
3 Months Ended
Mar. 31, 2026
Entity Addresses [Line Items]  
Document Type S-4
Amendment Flag false
Entity Registrant Name NON INVASIVE MONITORING SYSTEMS INC /FL/
Entity Central Index Key 0000720762
Entity Tax Identification Number 59-2007840
Entity Incorporation, State or Country Code FL
Entity Address, Address Line One 4400 Biscayne Blvd.
Entity Address, Address Line Two Suite 180
Entity Address, City or Town Miami
Entity Address, State or Province FL
Entity Address, Postal Zip Code 33137
City Area Code (305)
Local Phone Number 575-4200
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company false
Business Contact [Member]  
Entity Addresses [Line Items]  
Entity Address, Address Line One 4400 Biscayne Blvd.
Entity Address, Address Line Two Suite 180
City Area Code (305)
Local Phone Number 575-4200
Contact Personnel Name James J. Martin