Cash Equivalents and Short-Term Investments - Schedule of Unrealized Position (Details) - USD ($) $ in Thousands	Jan. 31, 2023	Jul. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	$ 150,269	$ 467,471
Less than 12 months, unrealized losses	(204)	(9,348)
Greater than 12 months, fair value	324,198	121,261
Greater than 12 months, unrealized losses	(10,230)	(2,553)
Total fair value	474,467	588,732
Total unrealized losses	(10,434)	(11,901)
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	24,983	80,833
Less than 12 months, unrealized losses	0	(251)
Greater than 12 months, fair value	0	0
Greater than 12 months, unrealized losses	0	0
Total fair value	24,983	80,833
Total unrealized losses	0	(251)
U.S. government agency securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	75,709	230,670
Less than 12 months, unrealized losses	(23)	(5,150)
Greater than 12 months, fair value	183,088	50,134
Greater than 12 months, unrealized losses	(6,448)	(1,478)
Total fair value	258,797	280,804
Total unrealized losses	(6,471)	(6,628)
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	49,577	155,968
Less than 12 months, unrealized losses	(181)	(3,947)
Greater than 12 months, fair value	141,110	71,127
Greater than 12 months, unrealized losses	(3,782)	(1,075)
Total fair value	190,687	227,095
Total unrealized losses	$ (3,963)	$ (5,022)

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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