FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Mar. 31, 2021

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Summary of gross holding losses and fair value of held-to-maturity securities

					Gross
			Amortized		Holding
	Held-To-Maturity	Level	Cost		Gain		Fair Value
March 31, 2021	UBS Select Treasury Preferred Fund	1	$	1,035,984,935	$	—	$	1,035,984,935
December 31,2020	U.S. Treasury Securities (Matured on 2/25/2021)	1	$	1,035,848,884	$	22,518	$	1,035,871,402

Schedule of fair value hierarchy for liabilities measured at fair value on a recurring basis

As of March 31, 2021
	Level 1		Level 2		Level 3		Total
Warrant liabilities:
Public Warrants	$	55,200,000	$	—	$	—	$	55,200,000
Private Placement Warrants		—		—		25,272,666		25,272,666
Total warrant liabilities	$	55,200,000	$	—	$	25,272,666	$	80,472,666
FPA liability	$	—	$	—	$	19,971,312	$	19,971,312

As of December 31, 2020
	Level 1		Level 2		Level 3		Total
Warrant liabilities:
Public Warrants	$	87,285,000	$	—	$	—	$	87,285,000
Private Placement Warrants		—		—		40,103,332		40,103,332
Total warrant liabilities	$	87,285,000	$	—	$	40,103,332	$	127,388,332
FPA liability	$	—	$	—	$	54,277,110	$	54,277,110

FPA liability

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Summary of the changes in the fair value of the liabilities, a Level 3 liability, measured on a recurring basis.

	FPA
	Liability
Fair value, December 31, 2020	$	54,277,110
Gain on change in fair value (1)		(34,305,798)
Fair value, March 31, 2021	$	19,971,312

_____________________________________

(1)  Represents the non-cash gain on the change in valuation of the FPA liability and is included in Gain on change in fair value of FPA liability on the unaudited condensed statement of operations.

Private Placement Warrants

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Summary of the changes in the fair value of the liabilities, a Level 3 liability, measured on a recurring basis.

	Private Placement
	Warrant Liability
Fair value, December 31, 2020	$	40,103,332
Gain on change in fair value (1)		(14,830,666)
Fair value, March 31, 2021	$	25,272,666

_____________________________________

(1)  Represents the non-cash gain on the change in valuation of the Private Placement Warrants and is included in Gain on change in fair value of warrant liability on the unaudited condensed statement of operations.