Quarterly report pursuant to Section 13 or 15(d)

Cover Page

v3.20.4
Cover Page - shares
 6 Months Ended
Nov. 30, 2020
Dec. 31, 2020
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Nov. 30, 2020  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q2  
Entity Registrant Name CYTODYN INC.  
Entity Central Index Key 0001175680  
Current Fiscal Year End Date --05-31  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Shell Company false  
Entity Filer Category Accelerated Filer  
Entity Small Business true  
Entity File Number 000-49908  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 83-1887078  
Entity Address, Address Line One 1111 Main Street  
Entity Address, Address Line Two Suite 660  
Entity Address, City or Town Vancouver  
Entity Address, State or Province WA  
Entity Address, Postal Zip Code 98660  
City Area Code 360  
Local Phone Number 980-8524  
Entity Emerging Growth Company false  
Entity Common Stock, Shares Outstanding   598,132,866
Document Quarterly Report true  
Document Transition Report false