Marketable Securities - Summary of Available for Sale Securities (Details) $ in Thousands	Mar. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,367,962	$ 906,410
Unrealized Holding Gains	51	998
Unrealized Holding Losses	(995)	(3)
Aggregate Fair Value	1,367,018	907,405
Short-term marketable securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	876,788
Unrealized Holding Gains	51
Unrealized Holding Losses	(544)
Aggregate Fair Value	876,295
Long-term marketable securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	491,174
Unrealized Holding Gains	0
Unrealized Holding Losses	(451)
Aggregate Fair Value	490,723
U.S. government treasuries | Short-term marketable securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	829,902	868,174
Unrealized Holding Gains	51	998
Unrealized Holding Losses	(544)	0
Aggregate Fair Value	$ 829,409	869,172
Number of securities held in unrealized holding loss positions, short-term | security	23
Aggregate fair value, unrealized holding loss position, short-term	$ 572,900
U.S. government treasuries | Long-term marketable securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	475,612
Unrealized Holding Gains	0
Unrealized Holding Losses	(416)
Aggregate Fair Value	$ 475,196
Number of securities held in unrealized holding loss positions, short-term | security	14
Aggregate fair value, unrealized holding loss position, short-term	$ 475,200
U.S. government agency securities | Short-term marketable securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		7,089
Unrealized Holding Gains		0
Unrealized Holding Losses		(3)
Aggregate Fair Value		$ 7,086
Number of securities held in unrealized holding loss positions, short-term | security		2
Aggregate fair value, unrealized holding loss position, short-term		$ 7,100
Corporate debt securities | Short-term marketable securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,079
Unrealized Holding Gains	0
Unrealized Holding Losses	0
Aggregate Fair Value	1,079
Corporate debt securities | Long-term marketable securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	15,562
Unrealized Holding Gains	0
Unrealized Holding Losses	(35)
Aggregate Fair Value	$ 15,527
Number of securities held in unrealized holding loss positions, short-term | security	4
Aggregate fair value, unrealized holding loss position, short-term	$ 15,500
Commercial paper | Short-term marketable securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	45,807	31,147
Unrealized Holding Gains	0	0
Unrealized Holding Losses	0	0
Aggregate Fair Value	$ 45,807	$ 31,147