Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2022	May 16, 2022
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2022
Entity Registrant Name	DUDDELL STREET ACQUISITION CORP.
Entity File Number	001-39672
Entity Incorporation, State or Country Code	E9
Entity Tax Identification Number	00-0000000
Entity Address, Address Line One	8/F Printing House
Entity Address, Address Line Two	6 Duddell Street
Entity Address, Country	HK
City Area Code	852
Local Phone Number	3468 6200
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	0001823466
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Ex Transition Period	false
Class A shares
Document Information [Line Items]
Title of 12(b) Security	Class A ordinary shares, par value $0.0001 per share
Trading Symbol	DSAC
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		17,500,000
Class B shares
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		4,375,000
Units, each consisting of one class A ordinary share and one-half of one redeemable warrant
Document Information [Line Items]
Title of 12(b) Security	Units, each consisting of one Class A ordinary share and one-half of one redeemable warrant
Trading Symbol	DSACU
Security Exchange Name	NASDAQ
Redeemable warrants, each warrant exercisable for one Class A ordinary share at an exercise price of $11.50
Document Information [Line Items]
Title of 12(b) Security	Redeemable warrants, each warrant exercisable for one Class A ordinary share at an exercise price of $11.50
Trading Symbol	DSACW
Security Exchange Name	NASDAQ