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Fair Value Measurement - Summary of Major Security Type Assets That Measured at Fair Value on Recurring Basis (Details) - Recurring - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Schedule of Available for Sale Securities [Line Items]
Amortized Cost	$ 1,174,206	$ 1,445,128
Unrealized Gain	7
Unrealized Loss	(22,085)	(4,208)
Fair Value	1,152,128	1,440,920
Level 1 | Money Market Funds
Schedule of Available for Sale Securities [Line Items]
Amortized Cost	231,866	227,826
Fair Value	231,866	227,826
Level 2 | Commercial Paper
Schedule of Available for Sale Securities [Line Items]
Amortized Cost	107,198	233,400
Fair Value	107,198	233,400
Level 2 | U.S. Government Securities
Schedule of Available for Sale Securities [Line Items]
Amortized Cost	629,591	724,554
Unrealized Gain	7
Unrealized Loss	(13,109)	(2,244)
Fair Value	616,489	722,310
Level 2 | Corporate Notes and Bonds
Schedule of Available for Sale Securities [Line Items]
Amortized Cost	205,551	259,348
Unrealized Loss	(8,976)	(1,964)
Fair Value	$ 196,575	$ 257,384

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