Summary of Significant Accounting Policies Recently Issued Accounting Standards (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019	Aug. 01, 2019	Jul. 31, 2019
Asset impairments	$ 28,372	$ 0	$ 28,372	$ 0
Interest Rate Swap Notional Amount			400,000
Operating Lease, Right-of-Use Asset	217,318	0	217,318	0	$ 225,600	$ 0
Operating Lease, Liability	244,261		244,261		258,000
Operating Lease, Liability, Noncurrent	209,321	0	209,321	0	223,100	0
Operating Lease, Liability, Current	35,000		35,000		34,900
Other Long Term Liabilities Noncurrent	251,464	$ 268,350	251,464	$ 268,350		$ 283,601
Unfavorable Lease Obligation Net					$ 32,400
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	16,500		21,000
Interest Rate Cash Flow Hedge Liability at Fair Value	21,013		21,013
US Refundable Payroll Tax Credits			6,500
Foreign Refundable Payroll Tax Credits			2,600
Finite-Lived Intangible Assets [Member]
Asset impairments			2,700
Goodwill [Member]
Asset impairments			25,700
EPR Secured Notes [Member]
Notes and Loans Payable	137,739		137,739
Debt Instrument, Fair Value Disclosure	131,086		131,086
EB-5 Development Notes [Member]
Notes and Loans Payable	47,139		47,139
Debt Instrument, Fair Value Disclosure	$ 45,756		$ 45,756