CASH EQUIVALENTS, RESTRICTED CASH AND MARKETABLE SECURITIES - Schedule of Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,539,785	$ 1,541,584
Gross Unrealized Gains	2,451	1,863
Gross Unrealized Losses	(2,346)	(2,218)
Fair Value	1,539,890	1,541,229
Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Fair Value	191,410	134,943
Marketable Securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	1,253,480	1,406,286
Restricted Cash
Debt Securities, Available-for-sale [Line Items]
Fair Value	95,000
Money market funds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	191,410	132,037
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	191,410	132,037
Money market funds \| Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Fair Value	191,410	132,037
Money market funds \| Marketable Securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	0	0
Money market funds \| Restricted Cash
Debt Securities, Available-for-sale [Line Items]
Fair Value	0
Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	125,087	55,863
Gross Unrealized Gains	13	58
Gross Unrealized Losses	(8)	(9)
Fair Value	125,092	55,912
Certificates of deposit \| Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Fair Value	0	750
Certificates of deposit \| Marketable Securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	30,092	55,162
Certificates of deposit \| Restricted Cash
Debt Securities, Available-for-sale [Line Items]
Fair Value	95,000
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	30,681	71,427
Gross Unrealized Gains	40	29
Gross Unrealized Losses	(8)	(19)
Fair Value	30,713	71,437
Commercial paper \| Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Fair Value	0	1,694
Commercial paper \| Marketable Securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	30,713	69,743
Commercial paper \| Restricted Cash
Debt Securities, Available-for-sale [Line Items]
Fair Value	0
Corporate notes and bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	449,612	406,093
Gross Unrealized Gains	1,115	934
Gross Unrealized Losses	(1,157)	(931)
Fair Value	449,570	406,096
Corporate notes and bonds \| Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Fair Value	0	462
Corporate notes and bonds \| Marketable Securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	449,570	405,634
Corporate notes and bonds \| Restricted Cash
Debt Securities, Available-for-sale [Line Items]
Fair Value	0
U.S. Treasuries
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	111,606	327,773
Gross Unrealized Gains	42	152
Gross Unrealized Losses	(36)	(34)
Fair Value	111,612	327,891
U.S. Treasuries \| Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Fair Value	0	0
U.S. Treasuries \| Marketable Securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	111,612	327,891
U.S. Treasuries \| Restricted Cash
Debt Securities, Available-for-sale [Line Items]
Fair Value	0
U.S. Government agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	631,389	548,391
Gross Unrealized Gains	1,241	690
Gross Unrealized Losses	(1,137)	(1,225)
Fair Value	631,493	547,856
U.S. Government agency securities \| Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Fair Value	0	0
U.S. Government agency securities \| Marketable Securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	631,493	$ 547,856
U.S. Government agency securities \| Restricted Cash
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 0

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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