Equity Incentive Plans (Tables)

12 Months Ended

Jul. 31, 2022

Share-Based Payment Arrangement [Abstract]

Schedule of RSUs Activity

Below is a summary of RSU activity, including MSUs, under the Stock Plans:

	Fiscal Year Ended July 31,
	2021					2022
	Number of Shares			Weighted Average Grant Date Fair Value per Share		Number of Shares			Weighted Average Grant Date Fair Value per Share
	(in thousands)
Outstanding at beginning of period		22,632		$	32.70		21,708		$	30.98
Granted		13,732		$	29.60		15,575		$	30.92
Released		(9,744	)	$	32.58		(9,626	)	$	32.68
Forfeited		(4,912	)	$	31.87		(5,521	)	$	32.55
Outstanding at end of period		21,708		$	30.98		22,136		$	29.81

Schedule of Stock Option Activity

Below is a summary of stock option activity under the Stock Plans:

	Fiscal Year Ended July 31,
	2021									2022
	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life		Aggregate Intrinsic Value		Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life		Aggregate Intrinsic Value
	(in thousands)					(in years)		(in thousands)		(in thousands)					(in years)		(in thousands)
Outstanding at beginning of period		7,546		$	5.10		3.6	$	129,010		3,334		$	5.20		2.8	$	102,740
Options granted		—		$	—						—		$	—
Options exercised		(3,712	)	$	4.07						(1,643	)	$	3.94
Options canceled/forfeited		(500	)	$	12.00						(2	)	$	13.04
Outstanding at end of period		3,334		$	5.20		2.8	$	102,740		1,689		$	6.43		1.9	$	14,707
Exercisable at end of period		3,334		$	5.20		2.8	$	102,739		1,689		$	6.43		1.9	$	14,707

Schedule of ESPP Valuation Assumptions

We use the Black-Scholes option pricing model to determine the fair value of shares purchased under the 2016 ESPP with the following weighted average assumptions on the date of grant:

	Fiscal Year Ended July 31,
	2020			2021			2022
Expected term (in years)		0.92			0.77			0.81
Risk-free interest rate		0.1	%		0.1	%		1.0	%
Volatility		73.4	%		56.9	%		43.3	%
Dividend yield		—	%		—	%		—	%

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

Total stock-based compensation expense recognized in our consolidated statements of operations is as follows:

	Fiscal Year Ended July 31,
	2020		2021		2022
	(in thousands)
Cost of revenue:
Product	$	5,334	$	6,023	$	7,379
Support, entitlements and other services		22,014		24,460		30,846
Sales and marketing		126,015		122,815		104,592
Research and development		153,252		150,856		143,759
General and administrative		45,383		54,391		56,670
Total stock-based compensation expense	$	351,998	$	358,545	$	343,246