Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v3.5.0.2
Document and Entity Information - USD ($)
12 Months Ended
May 31, 2016
Jun. 30, 2016
Nov. 30, 2015
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date May 31, 2016    
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus FY    
Trading Symbol CYDY    
Entity Registrant Name CYTODYN INC.    
Entity Central Index Key 0001175680    
Current Fiscal Year End Date --05-31    
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Smaller Reporting Company    
Entity Common Stock, Shares Outstanding   124,534,105  
Entity Public Float     $ 67,893,778