CytoDyn Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events (Detail)

Subsequent Events (Detail) $ / shares in Units, $ in Millions				1 Months Ended	3 Months Ended	9 Months Ended
	Mar. 25, 2022 individual shares	Mar. 18, 2022 USD ($) $ / shares shares	Feb. 24, 2022 shares	Apr. 30, 2022 shares	Feb. 28, 2022 $ / shares shares	Feb. 28, 2022 USD ($) $ / shares shares
Stock Options
Subsequent Event [Line Items]
Stock option granted, Shares						11,200,000
Award vesting period						3 years
Options term						10 years
Maximum
Subsequent Event [Line Items]
Exercise price of warrants, per share \| $ / shares					$ 1.00	$ 1.00
Minimum
Subsequent Event [Line Items]
Exercise price of warrants, per share \| $ / shares					$ 0.45	0.45
Private Warrant Exchange [Member]
Subsequent Event [Line Items]
Stock issued for private offering , Shares					7,900,000
Private Warrant Exchange [Member] \| Maximum
Subsequent Event [Line Items]
Exercise price of warrants, per share \| $ / shares					$ 1.00	1.00
Private Warrant Exchange [Member] \| Minimum
Subsequent Event [Line Items]
Exercise price of warrants, per share \| $ / shares					$ 0.40	$ 0.40
Private Warrant Exchange, Non-Inducement Shares [Member]
Subsequent Event [Line Items]
Stock issued for private offering , Shares						3,500,000
Private Equity Offering
Subsequent Event [Line Items]
Warrants to purchase common shares, shares					7,300,000	7,300,000
Term of warrants					5 years	5 years
Number of common shares in a fixed combination issue of shares					1	1
Private Equity Offering \| Maximum
Subsequent Event [Line Items]
Exercise price of warrants, per share \| $ / shares					$ 1.80	$ 1.80
Private Equity Offering \| Minimum
Subsequent Event [Line Items]
Exercise price of warrants, per share \| $ / shares					$ 0.40	$ 0.40
Stock Subscription Agreements [Member]
Subsequent Event [Line Items]
Warrants to purchase common shares, shares					5,000,000.0	5,000,000.0
Exercise price of warrants, per share \| $ / shares					$ 1.00	$ 1.00
Stock issued for private offering , Shares						11,400,000
Term of warrants					5 years	5 years
Number of common shares in a fixed combination issue of shares					1	1
Proceeds from issuance of common stock \| $						$ 11.4
Former Chief Executive Officer [Member]
Subsequent Event [Line Items]
Stock issued for private offering , Shares	908,418
Member of Company Scientific Advisory Board [Member] \| Stock Options
Subsequent Event [Line Items]
Stock option granted, Shares			645,000
Subsequent Event \| Private Warrant Exchange [Member]
Subsequent Event [Line Items]
Warrants to purchase common shares, shares		1,250,000
Exercise price of warrants, per share \| $ / shares		$ 0.40
Stock issued for private offering , Shares		2,500,000
Term of warrants		5 years
Combined purchase price per fixed combination of a share \| $ / shares		$ 0.40
Number of common shares in a fixed combination issue of shares		1
Number of shares per warrant		0.5
Proceeds from issuance of common stock \| $		$ 1.0
Number of shares for which purchase price is reduced		1,100,000
Number of warrants for which purchase price is reduced		400,000
Subsequent Event \| Private Equity Offering
Subsequent Event [Line Items]
Number of shares per warrant				0.75
Common stock per unit				1
Subsequent Event \| Private Equity Offering \| Maximum
Subsequent Event [Line Items]
Stock issued for private offering , Shares				61,300,000
Subsequent Event \| Member of Company Scientific Advisory Board [Member]
Subsequent Event [Line Items]
Number of new member appointed to scientific advisory board \| individual	4
Subsequent Event \| Member of Company Scientific Advisory Board [Member] \| Stock Options
Subsequent Event [Line Items]
Stock option granted, Shares	50,000
Award vesting period	3 years
Options term	10 years