Balance Sheet Components - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands		6 Months Ended
		Jan. 31, 2023	Jul. 31, 2022
Property, Plant and Equipment [Line Items]
Total property and equipment, gross		$ 507,365	$ 481,401
Less: accumulated depreciation		(394,781)	(367,961)
Total property and equipment, net		$ 112,584	113,440
Computer, production, engineering and other equipment
Property, Plant and Equipment [Line Items]
Estimated Useful Life		36 months
Total property and equipment, gross		$ 365,480	341,536
Demonstration units
Property, Plant and Equipment [Line Items]
Estimated Useful Life		12 months
Total property and equipment, gross		$ 62,474	61,914
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	[1]	$ 63,174	61,443
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Estimated Useful Life		60 months
Total property and equipment, gross		$ 16,237	$ 16,508

[1] Leasehold improvements are amortized over the shorter of the estimated useful lives of the improvements or the remaining lease term.