Cash, Cash Equivalents and Short-Term Investments - Schedule of Unrealized Losses Cash Equivalents and Short Term Investment (Details) - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	$ 277,006	$ 577,591
Less than 12 months, gross unrealized losses	(439)	(4,908)
12 months or greater, carrying value	68,064	0
12 months or greater, gross unrealized losses	(340)	0
Fair Value	345,070	577,591
Gross Unrealized Losses	(779)	(4,908)
U.S. Agency securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	35,979	73,724
Less than 12 months, gross unrealized losses	(53)	(435)
12 months or greater, carrying value	11,386	0
12 months or greater, gross unrealized losses	(83)	0
Fair Value	47,365	73,724
Gross Unrealized Losses	(136)	(435)
Commercial paper
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	15,462	45,015
Less than 12 months, gross unrealized losses	(2)	(112)
12 months or greater, carrying value	0	0
12 months or greater, gross unrealized losses	0	0
Fair Value	15,462	45,015
Gross Unrealized Losses	(2)	(112)
Corporate debt securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	85,998	75,203
Less than 12 months, gross unrealized losses	(192)	(572)
12 months or greater, carrying value	15,485	0
12 months or greater, gross unrealized losses	(58)	0
Fair Value	101,483	75,203
Gross Unrealized Losses	(250)	(572)
Municipal bonds
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value		1,970
Less than 12 months, gross unrealized losses		(19)
12 months or greater, carrying value		0
12 months or greater, gross unrealized losses		0
Fair Value		1,970
Gross Unrealized Losses		(19)
Foreign government bonds
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value		2,170
Less than 12 months, gross unrealized losses		(41)
12 months or greater, carrying value		0
12 months or greater, gross unrealized losses		0
Fair Value		2,170
Gross Unrealized Losses		(41)
U.S. Treasury securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Less than 12 months, carrying value	139,567	379,509
Less than 12 months, gross unrealized losses	(192)	(3,729)
12 months or greater, carrying value	41,193	0
12 months or greater, gross unrealized losses	(199)	0
Fair Value	180,760	379,509
Gross Unrealized Losses	$ (391)	$ (3,729)