Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

v3.10.0.1
Document And Entity Information - USD ($)
12 Months Ended
Jul. 31, 2018
Sep. 30, 2018
Jan. 31, 2018
Document and Entity Information [Abstract]      
Entity Registrant Name ENZO BIOCHEM INC    
Document Type 10-K    
Current Fiscal Year End Date --07-31    
Entity Common Stock, Shares Outstanding   47,182,254  
Entity Public Float     $ 318,221,000
Amendment Flag false    
Entity Central Index Key 0000316253    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Accelerated Filer    
Entity Well-known Seasoned Issuer No    
Document Period End Date Jul. 31, 2018    
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Ex Transition Period false