Fair Value of Financial Instruments (Details 2) - USD ($) $ in Thousands	Apr. 30, 2026	Jul. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Less Than 12 Months	$ 618,142
12 Months or Greater	397,267
Total	1,015,410	$ 1,327,251
Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Less Than 12 Months	57,607
12 Months or Greater	0
Total	57,607	130,628
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Less Than 12 Months	279,650
12 Months or Greater	189,228
Total	468,878	425,198
Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Less Than 12 Months	56,450
12 Months or Greater	0
Total	56,450	80,970
U.S. Government bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Less Than 12 Months	37,437
12 Months or Greater	59,601
Total	97,038	64,184
Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Less Than 12 Months	162,494
12 Months or Greater	0
Total	162,494	488,854
U.S. Government agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Less Than 12 Months	7,969
12 Months or Greater	78,078
Total	86,047	66,129
Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Less Than 12 Months	14,715
12 Months or Greater	70,360
Total	85,075	69,457
Foreign government bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Less Than 12 Months	1,820
12 Months or Greater	0
Total	$ 1,820	$ 1,831