Stockholders' Equity - Share-Based Awards Available for Grant (Details) shares in Thousands	9 Months Ended
	Apr. 30, 2021 shares
Shares Available for Grant
Shares available for grant, beginning balance	18,047
Shares available for grant under an assumed plan	4,298
Restricted stock units granted	(4,667)
Options granted	0
Share-based awards canceled/forfeited/expired	3,181
Shares available for grant, ending balance	20,859
Pool shares reduced for each share granted	2.3
Pool shares increased for each share forfeited	2.3