EQUITY AND EQUITY COMPENSATION - Warrants (Details) shares in Millions	Dec. 31, 2023 $ / shares shares
Class of Warrant or Right [Line Items]
Number of Warrants (in shares)	11.1
Payroll Support Program (PSP1)
Class of Warrant or Right [Line Items]
Number of Warrants (in shares)	6.8
Exercise Price (usd per share) | $ / shares	$ 24.25
Payroll Support Program Extension (PSP2)
Class of Warrant or Right [Line Items]
Number of Warrants (in shares)	2.4
Exercise Price (usd per share) | $ / shares	$ 39.54
Payroll Support Program 3 (PSP3)
Class of Warrant or Right [Line Items]
Number of Warrants (in shares)	1.9
Exercise Price (usd per share) | $ / shares	$ 47.57