FAIR VALUE MEASUREMENTS - Change In Fair Value Of Warrant Liability (Details) - USD ($)	2 Months Ended	3 Months Ended			8 Months Ended	9 Months Ended
	Mar. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2020	Sep. 30, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Change in fair value of warrant liabilities		$ (14,590,580)		$ 0	$ 0	$ (25,208,969)
Significant Other Unobservable Inputs (Level 3)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Change in fair value of warrant liabilities		(6,590,580)	$ 6,249,024			(24,700,000)
Private Placement Warrants
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Initial measurement at February 4, 2021	$ 25,146,129	19,789,559	13,540,535
Change in fair value recognized in earnings	(11,605,594)
Fair value as of September 30, 2021	13,540,535	13,198,979	19,789,559			13,198,979
Public Warrants
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Initial measurement at February 4, 2021	30,261,819	25,000,000	17,500,000
Change in fair value recognized in earnings	(12,761,819)	(8,000,000)	7,500,000
Fair value as of September 30, 2021	17,500,000	17,000,000	25,000,000			17,000,000
Warrant Liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Initial measurement at February 4, 2021	55,407,948	44,789,559	31,040,535
Change in fair value recognized in earnings	(24,367,413)	(14,590,580)	13,749,024
Fair value as of September 30, 2021	$ 31,040,535	$ 30,198,979	$ 44,789,559			$ 30,198,979