Stockholders' Equity - Stock Options (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Dec. 31, 2007	Jul. 31, 2024 USD ($) day shares	Jul. 31, 2023 USD ($)	Jul. 31, 2022 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options that were in-the-money (in shares) | shares		22,290,519
Total stock-based compensation		$ 35,234	$ 39,673	$ 38,965
Proceeds from the exercise of stock options		$ 24,260	49,679	28,108
Exercise price, based on number of consecutive trading days preceding exercise | day		20
Total compensation expense to be recognized per grant		$ 50,100
Aggregate intrinsic value of options exercised		105,500	131,100	30,500
Unrecognized total compensation cost related to non-vested stock-based awards		$ 26,300
Amortized cost on a straight-line basis over a weighted average term (in years)		2 years 6 months 25 days
Fair value of options vested		$ 21,500	24,500	29,000
Purple Wave Inc
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation		$ 1,900	0
Stock Price Increase Threshold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of trading price compared to exercise price		125.00%
Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation		$ 7,400	$ 12,200	$ 9,800
Award vesting rights percentage		20.00%
Equity Incentive 2007 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized to purchase (in shares) | shares		144,000,000
Maximum vesting term for incentive and non-qualified stock options determined by board of directors (in years)	10 years
Share-based compensation arrangement by share-based payment award, award requisite service period (in years)	5 years
Shares were available for future grant under the Plan (in shares) | shares		21,137,327
October Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation arrangement with individual - requisite service period (in years)		5 years
Share-based Payment Arrangement, Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award requisite service period (in years)		5 years
Risk-free interest rate, minimum (as a percent)		3.86%	3.67%	0.82%
Risk-free interest rate, maximum (as a percent)		4.43%	3.88%	2.70%
Estimated volatility, minimum (as a percent)		30.10%	29.60%	27.90%
Estimated volatility, maximum (as a percent)		30.60%	32.00%	30.00%
Share-based Payment Arrangement, Option | Valuation Technique, Option Pricing Model
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate, minimum (as a percent)		0.71%
Risk-free interest rate, maximum (as a percent)		3.57%
Estimated volatility, minimum (as a percent)		25.20%
Estimated volatility, maximum (as a percent)		29.30%
Restricted Stock | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		2 years
Restricted Stock | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		5 years
Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)		5 years