Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v3.2.0.727
Document and Entity Information - USD ($)
12 Months Ended
May. 31, 2015
Jun. 30, 2015
Nov. 30, 2014
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date May 31, 2015    
Document Fiscal Year Focus 2015    
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   70,142,332  
Entity Public Float     $ 64,183,157