Annual report pursuant to Section 13 and 15(d)

Cover Page

Cover Page - USD ($)
12 Months Ended
May 31, 2020
Jul. 31, 2020
Nov. 30, 2019
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date May 31, 2020    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Entity Registrant Name CytoDyn Inc.    
Entity Central Index Key 0001175680    
Current Fiscal Year End Date --05-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Shell Company false    
Entity Filer Category Accelerated Filer    
Entity Small Business true    
Entity Address, State or Province WA    
Entity Emerging Growth Company false    
Entity Public Float     $ 106,487,002
Entity Common Stock, Shares Outstanding   568,242,391