Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021
Income Tax Disclosure [Abstract]
Effective income tax rate (as a percent)	20.40%	18.70%	16.50%
Federal statutory tax rate (as a percent)	21.00%	21.00%	21.00%
Discrete tax adjustments	$ 1,500	$ 17,000	$ 19,800
Deduction in FDII	42,600	37,200
Discrete tax adjustments, prior year		8,200
Tax benefits	21,000	14,400	29,800
Increase in valuation allowance	11,100
Tax credit carryforward	41,600	29,900
Valuation allowance	40,346	29,171
Unrecognized tax benefits that would impact effective tax rate	45,300	44,200
Interest and penalties related to income tax	11,700	$ 8,900	$ 7,200
Undistributed earnings	$ 377,700