Cover	6 Months Ended
	Jun. 30, 2024 $ / shares shares
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Jun. 30, 2024
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2024
Current Fiscal Year End Date	--12-31
Entity File Number	001-41237
Entity Registrant Name	DUET Acquisition Corp.
Entity Central Index Key	0001890671
Entity Tax Identification Number	87-2744116
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	V03-11-02, Designer Office
Entity Address, Address Line Two	V03, Lingkaran SV
Entity Address, Address Line Three	Sunway Velocity
Entity Address, City or Town	Kuala Lumpur
Entity Address, Country	MY
Entity Address, Postal Zip Code	55100
City Area Code	(914)
Local Phone Number	316-4805
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
Elected Not To Use the Extended Transition Period	false
Entity Shell Company	true
Units, each consisting of one share of Class A Common Stock and one Redeemable Warrant [Member]
Title of 12(b) Security	Units, each consisting of one share of Class A Common Stock and one Redeemable Warrant
Trading Symbol	DUETU
Security Exchange Name	NASDAQ
Class A Common Stock, $0.0001 par value per share [Member]
Title of 12(b) Security	Class A Common Stock, $0.0001 par value per share
Trading Symbol	DUET
Security Exchange Name	NASDAQ
Redeemable Warrants, each warrant exercisable for one share of Class A Common Stock at an exercise price of $11.50 per share [Member]
Title of 12(b) Security	Redeemable Warrants, each warrant exercisable for one share of Class A Common Stock at an exercise price of $11.50 per share
Trading Symbol	DUETW
Security Exchange Name	NASDAQ
Common Class A [Member]
Entity Common Stock, Shares Outstanding | shares	1,759,586
Entity Listing, Par Value Per Share | $ / shares	$ 0.0001
Common Class B [Member]
Entity Common Stock, Shares Outstanding | shares	2,156,250
Entity Listing, Par Value Per Share | $ / shares	$ 0.0001