Revenue, Deferred Revenue and Deferred Commissions - Revenue by Arrangement, Disclosure (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2021	Oct. 31, 2020
Condensed Income Statements, Captions [Line Items]
Total revenue	$ 378,517	$ 312,754
Subscription
Condensed Income Statements, Captions [Line Items]
Total revenue	337,901	278,165
Non-portable software
Condensed Income Statements, Captions [Line Items]
Total revenue	14,337	20,043
Hardware
Condensed Income Statements, Captions [Line Items]
Total revenue	2,163	729
Professional services
Condensed Income Statements, Captions [Line Items]
Total revenue	$ 24,116	$ 13,817