Summary of Significant Accounting Policies Recently Issued Accounting Standards (Details) SFr in Thousands, $ in Thousands	Jan. 31, 2023 USD ($)	Aug. 03, 2022 CHF (SFr)	Aug. 01, 2022 USD ($)	Jul. 31, 2022 USD ($)	Jan. 31, 2022 USD ($)	Dec. 18, 2020 USD ($)
Long-term Debt	$ 2,867,330			$ 2,807,046	$ 2,844,630
Operating Lease, Right-of-Use Asset	200,667			192,070	198,672
Operating Lease, Liability, Noncurrent	184,298			174,567	188,797
Operating Lease, Liability, Current	36,667			34,218	35,438
Interest Rate Cash Flow Hedge Liability at Fair Value					1,155
Debt Instrument, Face Amount		SFr 40,000				$ 575,000
Long-term debt, net (Note 5)	2,789,827		$ 2,745,122	2,670,300	2,695,589
Deferred income taxes, net	288,072		249,685	268,464	282,427
Additional paid-in capital	1,112,519		1,104,511	1,184,577	1,172,595
Retained earnings	837,573		919,912	895,889	786,473
Accounting Standards Update 2020-06 | Cumulative Effect, Period of Adoption, Adjustment
Long-term debt, net (Note 5)			74,822
Deferred income taxes, net			(18,779)
Additional paid-in capital			(80,066)
Retained earnings			$ 24,023
EPR Secured Notes [Member]
Long-term Debt	114,162			114,162	114,162
Notes and Loans Payable	133,305
Debt Instrument, Fair Value Disclosure	161,156
6.25% Notes [Member]
Long-term Debt	600,000			600,000	600,000
Debt Instrument, Fair Value Disclosure	604,062
0.0% Convertible Notes
Long-term Debt	575,000
Debt Instrument, Fair Value Disclosure	547,339
Convertible Notes Payable
Long-term Debt	$ 575,000			$ 575,000	$ 575,000