CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2023	Jan. 31, 2022
Statement of Comprehensive Income [Abstract]
Net loss	$ (70,790)	$ (115,416)	$ (170,304)	$ (535,622)
Other comprehensive loss, net of tax:
Change in unrealized loss on available-for-sale securities, net of tax	3,917	(1,776)	275	(2,427)
Comprehensive loss	$ (66,873)	$ (117,192)	$ (170,029)	$ (538,049)