| Cover | Jan. 23, 2025 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 23, 2025 |
| Entity File Number | 000-13176 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.01 per share |
| Trading Symbol | NIMU |
| Entity Emerging Growth Company | false |
