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Acquisitions (Narrative) (Details) $ in Thousands, SFr in Millions					12 Months Ended
	May 02, 2024 USD ($)	May 02, 2024 CHF (SFr)	Aug. 03, 2022 USD ($)	Aug. 03, 2022 CHF (SFr)	Jul. 31, 2025 USD ($)	Jul. 31, 2024 USD ($)	Jul. 31, 2023 USD ($)	Jul. 31, 2023 CHF (SFr)	Aug. 03, 2022 CHF (SFr)
Payments to Acquire Businesses, Net of Cash Acquired					$ 0	$ 94,356	$ 38,567
Goodwill, Acquired During Period					25	$ 2,796
Andermatt-Sedrun
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill					7,476
Business Combination, Consideration Transferred			$ 155,365	SFr 149.3
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment					176,805
Goodwill, Acquired During Period					3,368
Business Combination, Recognized Liability Assumed, Liability					16,497
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less)					246,889
Business Combination, Voting Equity Interest Acquired, Percentage			55.00%						55.00%
mtn:BusinessCombinationRemainderPayment			$ 41,300						SFr 39.3
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value					91,524
Business Combination, Consideration Transferred and Preacquisition Equity Interest in Acquiree					246,889
Business Combination, Recognized Asset Acquired, Prepaid Expense and Other Asset, Current					119,867
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt					(44,130)
Deposit returned for acquisition of business							$ 114,400	SFr 110.0
Business Combination, Voting Equity Interest Acquired, Percentage			55.00%						55.00%
Crans-Montana
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill					8,262
Business Combination, Consideration Transferred	$ 107,155	SFr 97.5
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment					115,609
Goodwill, Acquired During Period					2,821
Business Combination, Recognized Liability Assumed, Liability					121,239
Business Combination, Voting Equity Interest Acquired, Percentage	84.00%	84.00%
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value					14,084
Business Combination, Consideration Transferred and Preacquisition Equity Interest in Acquiree					121,239
Business Combination, Recognized Asset Acquired, Prepaid Expense and Other Asset, Current					$ 20,768
Business Combination, Voting Equity Interest Acquired, Percentage	84.00%	84.00%

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