Stockholders' Equity - Restricted Stock Unit Activity and Related Share-Based Compensation Expense (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Nov. 01, 2021	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2020
Number of Shares
Nonvested, number of shares, beginning balance (in shares)		9,038,000	5,664,000	5,683,000
Assumed through acquisition (in shares)			1,998,000
Granted (in shares)		6,634,000	3,877,000	2,657,000
Restricted stock subject to revest provisions issued in connection with acquisition (in shares)			775,000
Vested (in shares)		(3,154,000)	(2,242,000)	(2,039,000)
Forfeited (in shares)		(1,051,000)	(1,034,000)	(637,000)
Nonvested, number of shares, ending balance (in shares)		11,467,000	9,038,000	5,664,000
Weighted Average Grant Date Fair Value
Nonvested, weighted average grant date fair value per share, beginning balance (in dollars per share)		$ 345.86	$ 231.97	$ 186.22
Assumed through acquisition (in dollars per share)			355.49
Granted (in dollars per share)		466.12	431.82	271.80
Restricted stock subject to revest provisions issued in connection with acquisition (in dollars per share)			355.49
Vested (in dollars per share)		351.80	262.23	180.40
Forfeited (in dollars per share)		351.15	251.41	154.91
Nonvested, weighted average grant date fair value per share, ending balance (in dollars per share)		$ 413.32	$ 345.86	$ 231.97
Total tax benefit related to RSU share-based compensation expense		$ 396,000	$ 269,000	$ 173,000
The Rocket Science Group, LLC (Mailchimp)
Weighted Average Grant Date Fair Value
Fair value of equity awards	$ 6,300,000
Business acquisition, equity interest issued (in shares)	10,100,000
Restricted Stock Units (RSUs)
Weighted Average Grant Date Fair Value
Total fair market value of shares vested		1,658,000	942,000	620,000
Share-based compensation for RSUs		1,248,000	708,000	382,000
Total tax benefit related to RSU share-based compensation expense		375,000	225,000	134,000
Cash tax benefits realized for tax deductions for RSUs		334,000	$ 221,000	$ 139,000
Unrecognized compensation cost		$ 4,300,000
Weighted average vesting period		3 years 1 month 6 days
Restricted Stock Units (RSUs) | Credit Karma
Number of Shares
Granted (in shares)		809,000
Weighted Average Grant Date Fair Value
Fair value of equity awards		$ 300,000
Restricted Stock Units (RSUs) | The Rocket Science Group, LLC (Mailchimp)
Weighted Average Grant Date Fair Value
Fair value of equity awards	$ 211,000
Stock units issued in substitution of outstanding equity incentive awards	583,000
Grant date fair value of equity awards	$ 355,000
Business acquisition, equity interest issued (in shares)	325,000