Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2023	Jan. 31, 2022	Jul. 31, 2022
Accounts Receivable, after Allowance for Credit Loss, Current	$ 160,393	$ 167,088	$ 160,393	$ 167,088	$ 383,425
Deferred Revenue, Current	619,511	611,477	619,511	611,477	$ 511,306
Mountain Revenue Net	1,013,442	834,375	1,215,159	943,675
Lodging Revenue Net	80,577	71,980	158,194	137,941
Resort net revenue	1,094,019	906,355	1,373,353	1,081,616
Real Estate Revenue	7,699	180	7,812	495
Revenues	1,101,718	906,535	1,381,165	1,082,111
Contract with Customer, Liability, Revenue Recognized	220,100		274,600
Lift
Mountain Revenue Net	592,603	521,582	652,143	535,911
Ski School
Mountain Revenue Net	123,451	92,072	132,378	93,545
Dining
Mountain Revenue Net	85,828	54,049	105,270	66,569
Lodging Revenue Net	13,184	8,375	30,013	18,650
Retail/Rental
Mountain Revenue Net	159,932	126,831	200,276	155,207
Other
Mountain Revenue Net	51,628	39,841	125,092	92,443
Owned hotel rooms
Lodging Revenue Net	13,479	13,584	37,044	35,067
Managed condominium rooms
Lodging Revenue Net	31,336	33,125	44,195	46,209
Golf
Lodging Revenue Net	0	0	5,939	5,118
Other
Lodging Revenue Net	11,700	9,269	24,988	21,736
Lodging revenue (excluding payroll cost reimbursements) [Member]
Lodging Revenue Net	75,587	70,119	149,527	134,339
Payroll cost reimbursements
Lodging Revenue Net	4,990	1,861	8,667	3,602
Transportation
Lodging Revenue Net	$ 5,888	$ 5,766	$ 7,348	$ 7,559