Summary of Significant Accounting Policies Recently Issued Accounting Standards (Details) - USD ($) $ in Thousands	Oct. 31, 2020	Jul. 31, 2020	Oct. 31, 2019
Long-term Debt	$ 2,444,111	$ 2,444,248	$ 2,057,986
Operating Lease, Right-of-Use Asset	218,902	225,744	229,709
Operating Lease, Liability, Noncurrent	213,073	217,542	231,182
Operating Lease, Liability, Current	36,185	36,604	35,136
Interest Rate Cash Flow Hedge Liability at Fair Value	17,855	22,510
EPR Secured Notes [Member]
Long-term Debt	114,162	114,162	114,162
Notes and Loans Payable	136,913
Debt Instrument, Fair Value Disclosure	159,713
EB-5 Development Notes [Member]
Long-term Debt	51,500	51,500	52,000
Notes and Loans Payable	48,480
Debt Instrument, Fair Value Disclosure	48,660
6.25% Notes [Member]
Long-term Debt	600,000	$ 600,000	$ 0
Debt Instrument, Fair Value Disclosure	$ 633,750