Acquisitions (Summary Of Estimate Of Fair Value Of Identifiable Assets Acquired And Liabilities Assumed) (Details) $ in Thousands, $ in Millions		12 Months Ended
	Sep. 24, 2019 USD ($)	Jul. 31, 2020 USD ($)	Jul. 31, 2019 USD ($)	Jul. 31, 2019 AUD ($)
Business Acquisition [Line Items]
Indefinite-Lived Trademarks		$ 230,000	$ 215,905
Unfavorable lease obligations, net		1,651	19,017
Goodwill, Acquired During Period		135,987	152,049
Peak Resorts, Inc. [Member]
Business Acquisition [Line Items]
Business Combination, Cash Consideration Transferred	$ 264,500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables		19,578
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment		427,793
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		19,221
Goodwill, Acquired During Period		135,879
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		(99,275)
Business Combination, Consideration Transferred	334,700
Business Combination, Consideration Transferred, Other	70,200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		334,731
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed		3,100
Proceeds from (Repayments of) Debt	$ 335,600
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets		16,203
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt		(184,668)
Falls Creek and Hotham [Member]
Business Acquisition [Line Items]
Business Combination, Cash Consideration Transferred			127,400
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables			6,986
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment			54,889
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			5,833
Goodwill, Acquired During Period			71,538
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			(11,894)
Business Combination, Consideration Transferred				$ 178.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			127,352
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed			4,600
Stamp Duty Expense			2,900
Canyons [Member]
Business Acquisition [Line Items]
Business Acquisition, Purchase Price Allocation, Land		31,818	31,818
Business Acquisition, Purchase Price Allocation, Land Improvements		49,228	49,228
Business Acquisition, Purchase Price Allocation, Buildings and Building Improvements		42,160	42,160
Business Acquisition, Purchase Price Allocation, Machinery and Equipment		60,384	60,384
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment Gross (under Capital Lease)		183,590	183,590
Business Acquisition, Purchase Price Allocation, Accumulated Depreciation		(65,792)	(56,040)
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment Net (under Capital Lease)		117,798	127,550
Stevens Pass [Member]
Business Acquisition [Line Items]
Business Combination, Cash Consideration Transferred			64,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables			752
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment			34,865
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Noncurrent			886
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			2,680
Goodwill, Acquired During Period			28,878
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			(4,029)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			64,032
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed			1,200
Proceeds from (Repayments of) Debt			70,000
Triple Peaks, LLC [Member]
Business Acquisition [Line Items]
Business Combination, Cash Consideration Transferred			74,100
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables			5,197
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment			159,799
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Noncurrent			3,093
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			27,360
Goodwill, Acquired During Period			51,742
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			(18,098)
Business Combination, Consideration Transferred			229,100
Business Combination, Consideration Transferred, Other			155,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			229,093
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed			2,800
Proceeds from (Repayments of) Debt			195,600
Mountain [Member]
Business Acquisition [Line Items]
Goodwill, Acquired During Period		$ 135,987	$ 152,049