Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2022	Nov. 07, 2022
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2022
Entity File Number	001-39936
Entity Registrant Name	DIAMONDHEAD HOLDINGS CORP.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	85-3460766
Entity Address, Address Line One	250 Park Ave. 7th Floor,
Entity Address, City or Town	New York
Entity Address State Or Province	NY
Entity Address, Postal Zip Code	10177
City Area Code	212
Local Phone Number	572-6260
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	true
Entity Central Index Key	0001830188
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Amendment Flag	false
Units, each consisting of one share of Class A common stock, $0.0001 per value and one-fourth of one redeemable warrant
Document and Entity Information
Title of 12(b) Security	Units, each consisting of one share of Class A common stock, $0.0001 per value and one-fourth of one redeemable warrant
Trading Symbol	DHHCU
Security Exchange Name	NASDAQ
Class A common stock
Document and Entity Information
Title of 12(b) Security	Class A common stock, par value $0.0001 per share
Trading Symbol	DHHC
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		34,500,000
Warrants, each whole warrant exercisable for one share of Class A common stock, each at an exercise price of $11.50 per share
Document and Entity Information
Title of 12(b) Security	Warrants, each whole warrant exercisable for one share of Class A common stock, each at an exercise price of $11.50 per share
Trading Symbol	DHHCW
Security Exchange Name	NASDAQ
Class B common stock
Document and Entity Information
Entity Common Stock, Shares Outstanding		8,625,000