CASH EQUIVALENTS AND MARKETABLE SECURITIES - Summary of Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,622,744	$ 1,541,584
Gross Unrealized Gains	6,096	1,863
Gross Unrealized Losses	(382)	(2,218)
Fair Value	1,628,458	1,541,229
Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Fair Value	118,159	134,943
Marketable Securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	1,510,299	1,406,286
Money market funds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	94,245	132,037
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	94,245	132,037
Money market funds \| Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Fair Value	94,245	132,037
Money market funds \| Marketable Securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	0	0
Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	26,356	55,863
Gross Unrealized Gains	19	58
Gross Unrealized Losses	0	(9)
Fair Value	26,375	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	26,375	55,162
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	77,139	71,427
Gross Unrealized Gains	101	29
Gross Unrealized Losses	(1)	(19)
Fair Value	77,239	71,437
Commercial paper \| Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Fair Value	23,914	1,694
Commercial paper \| Marketable Securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	53,325	69,743
Corporate notes and bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	456,985	406,093
Gross Unrealized Gains	2,807	934
Gross Unrealized Losses	(145)	(931)
Fair Value	459,647	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	459,647	405,634
U.S. Treasuries
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	222,450	327,773
Gross Unrealized Gains	151	152
Gross Unrealized Losses	(16)	(34)
Fair Value	222,585	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	222,585	327,891
U.S. Government agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	745,569	548,391
Gross Unrealized Gains	3,018	690
Gross Unrealized Losses	(220)	(1,225)
Fair Value	748,367	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	$ 748,367	$ 547,856

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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Amount, before tax, of unrealized loss 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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