MARKETABLE DEBT SECURITIES - Summary of Marketable Debt Securities (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 1,691,630	$ 1,648,127
Gross Unrealized Gains	181	3,030
Gross Unrealized Losses	(2,928)	(1,482)
Fair Value	1,688,883	1,649,675
U.S. treasury securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	920,578	892,237
Gross Unrealized Gains	79	1,085
Gross Unrealized Losses	(1,671)	(588)
Fair Value	918,986	892,734
U.S. government-sponsored enterprise securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	384,165	440,915
Gross Unrealized Gains	63	1,000
Gross Unrealized Losses	(727)	(574)
Fair Value	383,501	441,341
Corporate notes
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	305,491	252,487
Gross Unrealized Gains	39	945
Gross Unrealized Losses	(527)	(320)
Fair Value	305,003	253,112
Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	76,379	58,901
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	76,379	58,901
Certificates of deposit
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		3,587
Gross Unrealized Gains		0
Gross Unrealized Losses		0
Fair Value		$ 3,587
Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	5,017
Gross Unrealized Gains	0
Gross Unrealized Losses	(3)
Fair Value	$ 5,014

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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