Fair Value Measurements - Schedule of Financial Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Marketable securities:
Gross unrealized gains	$ 1,607	$ 1,638
Gross unrealized losses	(192)	(566)
Total
Cost or amortized cost	1,897,753	1,782,155
Fair value	1,899,168	1,783,227
Money market funds
Cash equivalents:
Cost or amortized cost	546,127	497,461
U.S. treasury securities | Cash equivalents
Marketable securities:
Cost or amortized cost	12,508	5,979
Gross unrealized gains	0	2
Gross unrealized losses	0	0
Fair value	12,508	5,981
U.S. treasury securities | Marketable securities
Marketable securities:
Cost or amortized cost	767,005	817,996
Gross unrealized gains	1,084	1,120
Gross unrealized losses	(85)	(396)
Fair value	768,004	818,720
Certificates of deposit
Cash equivalents:
Cost or amortized cost	25,118
Corporate bonds | Cash equivalents
Marketable securities:
Cost or amortized cost		1,066
Gross unrealized gains		2
Gross unrealized losses		0
Fair value		1,068
Corporate bonds | Marketable securities
Marketable securities:
Cost or amortized cost	198,458	159,424
Gross unrealized gains	433	400
Gross unrealized losses	(49)	(86)
Fair value	198,842	159,738
U.S. agency bonds | Marketable securities
Marketable securities:
Cost or amortized cost	208,446	117,965
Gross unrealized gains	59	15
Gross unrealized losses	(52)	(62)
Fair value	208,453	117,918
Commercial paper | Marketable securities
Marketable securities:
Cost or amortized cost	140,091	182,264
Gross unrealized gains	31	99
Gross unrealized losses	(6)	(22)
Fair value	$ 140,116	$ 182,341