Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2023
Income Tax Disclosure [Abstract]
Effective income tax rate (as a percent)	18.30%	20.50%	20.40%
Federal statutory tax rate (as a percent)	21.00%	21.00%	21.00%
Deduction in FDII	$ 55,000	$ 47,700	$ 42,600
Tax benefits	36,700	14,800	21,000
State income taxes	38,600	40,600	30,300
Increase in valuation allowance	2,900
Tax credit carryforward	52,300	48,600
Valuation allowance	50,311	47,377
Unrecognized tax benefits that would impact effective tax rate	19,900	36,100
Interest and penalties related to income tax	10,400	$ 13,800	$ 11,700
Undistributed earnings	$ 688,500