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Summary of Significant Accounting Policies Recently Issued Accounting Standards (Details) - USD ($) $ in Thousands	Jan. 31, 2022	Jul. 31, 2021	Jan. 31, 2021
Long-term Debt	$ 2,844,630	$ 2,948,514	$ 2,992,157
Operating Lease, Right-of-Use Asset	198,672	204,716	215,377
Operating Lease, Liability, Noncurrent	188,797	190,561	210,855
Operating Lease, Liability, Current	35,438	34,668	36,878
Interest Rate Cash Flow Hedge Liability at Fair Value	1,155	12,942	16,548
EPR Secured Notes [Member]
Long-term Debt	114,162	114,162	114,162
Notes and Loans Payable	134,909
Debt Instrument, Fair Value Disclosure	203,120
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	623,124
0.0% Convertible Notes
Long-term Debt	487,824
Debt Instrument, Fair Value Disclosure	576,466
Convertible Notes Payable
Long-term Debt	$ 575,000	$ 575,000	$ 575,000

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