Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2022	Apr. 14, 2023	Jun. 30, 2022
Document and Entity Information
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2022
Entity File Number	001-39631
Entity Registrant Name	HORIZON ACQUISITION CORPORATION II
Transition Report	false
Entity Incorporation, State or Country Code	E9
Entity Tax Identification Number	98-1553406
Entity Address, Address Line One	600 Steamboat Road
Entity Address, Address Line Two	Suite 200
Entity Address, City or Town	Greenwich
Entity Address State Or Province	CT
Entity Address, Postal Zip Code	06830
City Area Code	203
Local Phone Number	298-5300
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
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 Shell Company	true
Entity Public Float			$ 366,670,000
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Entity Central Index Key	0001821788
Amendment Flag	false
ICFR Auditor Attestation Flag	false
Entity Ex Transition Period	false
Auditor Name	WithumSmith+Brown, PC
Auditor Firm ID	100
Auditor Location	New York
Class A ordinary share
Document and Entity Information
Title of 12(b) Security	Class A ordinary shares included as part of the units
Trading Symbol	HZON
Security Exchange Name	NYSEAMER
Entity Common Stock, Shares Outstanding		17,223,528
Redeemable warrants, each warrant exercisable for one Class A ordinary share, each at an exercise price of $11.50 per share
Document and Entity Information
Title of 12(b) Security	Redeemable warrants included as part of the units, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50
Trading Symbol	HZON WS
Security Exchange Name	NYSEAMER
Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-third of one redeemable warrant
Document and Entity Information
Title of 12(b) Security	Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-third of one redeemable warrant
Trading Symbol	HZON.U
Security Exchange Name	NYSEAMER
Class B ordinary share
Document and Entity Information
Entity Common Stock, Shares Outstanding		13,125,000

Horizon Acquisition Corp II 10-K