| Cover | Jan. 31, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 31, 2024 |
| Entity File Number | 001-09974 |
| Entity Registrant Name | ENZO BIOCHEM, INC. |
| Entity Central Index Key | 0000316253 |
| Entity Tax Identification Number | 13-2866202 |
| Entity Incorporation, State or Country Code | NY |
| Entity Address, Address Line One | 81 Executive Blvd. Suite 3 |
| Entity Address, City or Town | Farmingdale |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 11735 |
| City Area Code | 631 |
| Local Phone Number | 755-5500 |
| 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 | ENZ |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
