STOCKHOLDERS’ EQUITY AND EQUITY-BASED COMPENSATION - Narrative (Details)		1 Months Ended	3 Months Ended	12 Months Ended
	Jul. 13, 2021 USD ($) $ / shares shares	Jan. 31, 2021 $ / shares shares	Jun. 30, 2022 day shares	Dec. 31, 2022 USD ($) plan $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($)	Jun. 23, 2021 vote $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized (in shares)				2,500,000,000	2,500,000,000
Common stock par value (in dollars per share) | $ / shares				$ 0.0001	$ 0.0001
Preferred stock authorized (in shares)							25,000,000
Preferred stock par value (in dollars per share) | $ / shares							$ 0.0001
Number of approved plans | plan				9
Accelerated vesting period	18 months
Service period				4 years
Expiration period				10 years
Compensation expense | $				$ 88,979,000	$ 49,673,000	$ 3,342,000
Expected term (in years)				7 years
Risk-free rate				0.00%
Expected dividend rate (in percentage)				0.00%
Shares withheld for employee taxes on vested equity (in shares)				2,644,415
Shares withheld for employee taxes on vested equity awards | $				$ (7,687,000)
Fair value (in dollars per share) | $ / shares				$ 2.91
Treasury Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares withheld for employee taxes on vested equity (in shares)				2,644,415
Shares withheld for employee taxes on vested equity awards | $				$ (7,687,000)
Mountain Aviation, LLC
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)		3,968,900
Share issuance price (in dollars per share) | $ / shares		$ 7.60
Common Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized (in shares)							2,500,000,000
Common stock par value (in dollars per share) | $ / shares							$ 0.0001
Voting rights per share | vote							1
Common Class A | First share price vesting threshold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	5 years
Minimum threshold days	20 days
Number of consecutive trading days	30 days
2021 LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)				27,300,000
Fair value of stock options vested | $				$ 2,900,000
2022 Inducement Grant Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of awards available for grant (in shares)			2,051,282
WUP Profits Interests
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average remaining contractual term				8 years 6 months
Unrecognized compensation cost | $				$ 100,000
Unrecognized compensation cost recognition period				6 months
Total vested fair value | $				$ 1,000,000
Compensation expense | $				$ 1,300,000	$ 1,700,000	1,100,000
Granted (in shares)				0
Vested (in shares)				3,029,000
Nonvested awards (in shares)				1,697,000	4,732,000
WUP Profits Interests | MIP Plan VII
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)				31,300,000
WUP Restricted Interests
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				4 years
Vesting period after initial public offering				6 months
Vesting period after lock-up period				30 days
Service period				4 years
Compensation expense | $				$ 4,300,000	$ 14,200,000	0
Vested (in shares)				4,662,000
WUP Restricted Interests | MIP Plan VII
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)				4,700,000
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense | $				$ 7,700,000	$ 8,500,000	2,200,000
Stock options | WUP Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)				17,500,000
Unrecognized compensation cost recognition period				7 months 6 days
Vesting period				4 years
Aggregate intrinsic value | $				$ 0
Weighted-average remaining contractual term, outstanding				6 years 8 months 12 days
Weighted-average remaining contractual term, exercisable				6 years 7 months 6 days
Unrecognized compensation | $				$ 1,200,000
Fair value of stock options vested | $				$ 3,900,000
Stock options | 2021 LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				3 years
Aggregate intrinsic value | $				$ 0
Weighted-average remaining contractual term, outstanding				4 years 10 months 24 days
Weighted-average remaining contractual term, exercisable				4 years 10 months 24 days
Service period				3 years
Expiration period				10 years
RSUs | 2021 LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost recognition period				1 year 2 months 12 days
Unrecognized compensation | $				$ 56,000,000
Granted (in shares)				18,538,000
Vested (in shares)				6,107,000
Nonvested awards (in shares)				16,162,000	8,411,000
RSUs | 2021 LTIP | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				1 year
RSUs | 2021 LTIP | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				3 years
RSUs | 2022 CEO Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			1,600,000
Earnout Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost recognition period				4 months 24 days
Unrecognized compensation | $				$ 1,300,000
Compensation expense | $				$ 38,500,000	$ 18,000,000	0
Nonvested awards (in shares)	9,000,000			9,000,000
Earnout Shares | First share price vesting threshold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested awards (in shares)				3,000,000
Earnout Shares | Second share price vesting threshold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested awards (in shares)				3,000,000
Earnout Shares | Third share price vesting threshold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested awards (in shares)				3,000,000
Earnout Shares | Common Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	5 years
Earnout Shares | Common Class A | First share price vesting threshold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting milestone (in dollars per share) | $ / shares	$ 12.50
Earnout Shares | Common Class A | Second share price vesting threshold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting milestone (in dollars per share) | $ / shares	15.00
Earnout Shares | Common Class A | Third share price vesting threshold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting milestone (in dollars per share) | $ / shares	$ 17.50
Profit Interest Based Award and Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost recognition period				1 year 8 months 12 days
Compensation expense | $	$ 57,900,000
Earnout Share | First share price vesting threshold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested awards (in shares)				3,000,000
Earnout Share | Second share price vesting threshold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested awards (in shares)				3,000,000
Earnout Share | Third share price vesting threshold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested awards (in shares)				3,000,000
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense | $				$ 0
Performance Shares | 2021 LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested grant day fair value | $				$ 1,900,000
Granted (in shares)				1,149,000
Vested (in shares)				0
Nonvested awards (in shares)				957,000	0
Performance Based Restricted Stock Units | 2022 CEO Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			380,000,000	379,999
Market Based Restricted Stock Units | 2022 CEO Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost recognition period				3 years 3 months 18 days
Unrecognized compensation | $				$ 200,000
Granted (in shares)			1,615,000
Grant date fair value | $				$ 300,000
Vested (in shares)				0
Expected term (in years)				3 years 8 months 12 days
Market Based Restricted Stock Units | 2022 CEO Awards | First share price vesting threshold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting condition, threshold consecutive trading days | day			30
Service-Based Restricted Stock Units (RSUs) | 2022 CEO Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
RSUs, PSUs, and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense | $				$ 41,100,000	$ 7,300,000	$ 0