Annual report pursuant to Section 13 and 15(d)

Cover Page

Cover Page - USD ($)
12 Months Ended
May 31, 2022
May 31, 2021
Jul. 31, 2022
Nov. 30, 2021
Cover [Abstract]        
Document Type 10-K      
Document Annual Report true      
Document Transition Report false      
Document Period End Date May 31, 2022      
Entity File Number 000-49908      
Entity Registrant Name CytoDyn Inc.      
Entity Incorporation, State or Country Code DE      
Entity Tax Identification Number 83-1887078      
Entity Address, Address Line One 1111 Main Street, 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      
Title of 12(g) Security Common Stock, par value $0.001 per share      
No Trading Symbol Flag true      
Entity Well-known Seasoned Issuer No      
Entity Voluntary Filers No      
Entity Current Reporting Status Yes      
Entity Interactive Data Current Yes      
Entity Filer Category Large Accelerated Filer      
Entity Small Business false      
Entity Emerging Growth Company false      
Entity Shell Company false      
ICFR Auditor Attestation Flag true      
Entity Common Stock, Shares Outstanding     810,720,424  
Entity Public Float       $ 841,543,090
Auditor Name Macias Gini & O’Connell LLP Warren Averett, LLC    
Auditor Firm ID 324 2226    
Auditor Location San Jose, California Birmingham, Alabama    
Current Fiscal Year End Date --05-31      
Document Fiscal Year Focus 2022      
Document Fiscal Period Focus FY      
Entity Central Index Key 0001175680      
Amendment Flag false