Summary of Significant Accounting Policies Recently Issued Accounting Standards (Details) - USD ($) $ in Thousands	Apr. 30, 2022	Jul. 31, 2021	Apr. 30, 2021
Long-term Debt	$ 2,830,366	$ 2,948,514	$ 2,958,188
Operating Lease, Right-of-Use Asset	196,919	204,716	211,497
Operating Lease, Liability, Noncurrent	176,970	190,561	196,256
Operating Lease, Liability, Current	39,526	34,668	37,687
Interest Rate Cash Flow Hedge Liability at Fair Value		12,942	12,938
EPR Secured Notes [Member]
Long-term Debt	114,162	114,162	114,162
Notes and Loans Payable	134,508
Debt Instrument, Fair Value Disclosure	181,454
EB-5 Development Notes [Member]
Long-term Debt	0	51,500	51,500
6.25% Notes [Member]
Long-term Debt	600,000	600,000	600,000
Debt Instrument, Fair Value Disclosure	616,212
0.0% Convertible Notes
Long-term Debt	493,038
Debt Instrument, Fair Value Disclosure	546,969
Convertible Notes Payable
Long-term Debt	$ 575,000	$ 575,000	$ 575,000