Description of Organization, Business Operations and Basis of Presentation (Details) - USD ($)				1 Months Ended	3 Months Ended	6 Months Ended
	Jun. 11, 2021	Aug. 26, 2020	Aug. 25, 2020	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Subsidiary, Sale of Stock [Line Items]
General and administrative expenses					$ 1,279,057	$ 2,241,819
Number of units issued			50,000,000
Share price per share			$ 10.00		$ 10.00	$ 10.00
Offering costs			$ 19,600,000
Deferred underwriting commissions		$ 12,100,000	$ 12,100,000		$ 13,614,452	$ 13,614,452	$ 13,614,452
Cash underwriting fees						6,900,000
Cash held outside the Trust Account					18,100,000	$ 18,100,000
Threshold minimum aggregate fair market value as a percentage of the assets held in the Trust Account						80.00%
Threshold percentage of outstanding voting securities of the target to be acquired by post-transaction company to complete business combination						50.00%
Minimum net tangible assets upon consummation of the Business Combination					5,000,001	$ 5,000,001
Threshold percentage of Public Shares subject to redemption without the Company's prior written consent						15.00%
Obligation to redeem Public Shares if entity does not complete a Business Combination (as a percent)						100.00%
Threshold period from closing of public offering entity is obligated to complete business combination						24 months
Threshold business days for redemption of public shares						10 days
Maximum net interest to pay dissolution expenses						$ 100,000
Cash operating bank account					18,059,772	18,059,772	941,474
Working capital					16,100,000	16,100,000
Loans from working capital					$ 0	0	$ 0
Received of fee revenue from a third party	$ 17,500,000
Fee revenue from a third party	$ 25,000,000
U.S. federal income tax withholding tax on the payment, percentage	30.00%
Sponsor \| Founder Shares
Subsidiary, Sale of Stock [Line Items]
Aggregate purchase price						25,000
Loan from the Sponsor						$ 185,000
Initial Public Offering
Subsidiary, Sale of Stock [Line Items]
General and administrative expenses				$ 17,000
Number of units issued		4,398,433	50,000,000
Share price per share		$ 10.00	$ 10.00
Aggregate amount for issuance of units		$ 44,000,000.0	$ 500,000,000.0
Offering costs		2,400,000	19,600,000
Deferred underwriting commissions		$ 1,500,000	$ 12,100,000
Initial Public Offering \| Sponsor
Subsidiary, Sale of Stock [Line Items]
Number of units issued			15,500,000
Over-allotment
Subsidiary, Sale of Stock [Line Items]
Number of units issued		4,398,433
Aggregate amount for issuance of units		$ 44,000,000.0
Deferred underwriting commissions		900,000
Gross proceeds from sale of units			$ 900,000
Number of warrants issued			586,458
Exercise price of warrants			$ 1.50
Cash underwriting fees		1,500,000
Amount deposited into Trust Account		$ 544,000,000.0
Private Placement
Subsidiary, Sale of Stock [Line Items]
Gross proceeds from sale of units			$ 8,900,000
Number of warrants issued			5,933,333
Exercise price of warrants			$ 1.50
Private Placement Warrants
Subsidiary, Sale of Stock [Line Items]
Number of warrants issued			5,933,333
Exercise price of warrants			$ 1.50
Proceeds from sale of Private Placement Warrants			$ 8,900,000
Private Placement Warrants \| Sponsor
Subsidiary, Sale of Stock [Line Items]
Number of warrants issued			586,458
Exercise price of warrants			$ 1.50
Proceeds from sale of Private Placement Warrants			$ 900,000
Initial Public Offering and Private Placement
Subsidiary, Sale of Stock [Line Items]
Share price per share			$ 10.00
Aggregate proceeds held in the Trust Account			$ 500,000,000.0

Horizon Acquisition Corp 10-Q