Cash, Cash Equivalents and Short-Term Investments - Schedule of Unrealized Losses Cash Equivalents and Short Term Investment (Details) $ in Thousands	Jul. 31, 2022 USD ($)
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Carrying Value	$ 508,210
Gross Unrealized Losses	(2,570)
Municipal bonds
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Carrying Value	1,963
Gross Unrealized Losses	(11)
Foreign government bonds
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Carrying Value	2,178
Gross Unrealized Losses	(7)
Commercial paper
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Carrying Value	46,007
Gross Unrealized Losses	(190)
U.S. Agency securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Carrying Value	21,107
Gross Unrealized Losses	(39)
Corporate debt securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Carrying Value	38,112
Gross Unrealized Losses	(202)
U.S. Treasury securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Carrying Value	398,843
Gross Unrealized Losses	$ (2,121)