Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021	Aug. 01, 2022
Interest Rate Swap, Notional Amount	$ 400,000
Accounts payable and accrued liabilities (Note 8)	978,021	$ 942,830
Advertising expense	47,200	47,700	$ 38,600
Restricted cash	10,118	18,680
Operating right-of-use assets (Note 4)	192,289	192,070
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	3,700	18,900	12,800
Operating Lease, Liability	205,230
Operating lease liabilities (Note 4)	168,326	174,567
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	11,000	(4,300)	$ (5,400)
Long-term debt, net (Note 6)	2,750,675	2,670,300		$ 2,745,122
Deferred income taxes, net (Note 10)	276,137	268,464		249,685
Additional paid-in capital	1,124,433	1,184,577		1,104,511
Retained earnings	873,710	$ 895,889		919,912
Accounting Standards Update 2020-06 | Cumulative Effect, Period of Adoption, Adjustment
Long-term debt, net (Note 6)				74,822
Deferred income taxes, net (Note 10)				(18,779)
Additional paid-in capital				(80,066)
Retained earnings				$ 24,023
6.25% Notes [Member]
Debt Instrument, Fair Value Disclosure	602,544
Notes and Loans Payable	600,000
EPR Secured Notes [Member]
Debt Instrument, Fair Value Disclosure	174,854
Notes and Loans Payable	132,503
0.0% Notes
Debt Instrument, Fair Value Disclosure	510,134
Notes and Loans Payable	$ 575,000