Net Income Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands					3 Months Ended								12 Months Ended
	Oct. 25, 2019	Oct. 08, 2019	Sep. 25, 2019	Mar. 07, 2018	Jul. 31, 2019	Apr. 30, 2019	Jan. 31, 2019	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2017
Net income					$ (89,525)	$ 292,134	$ 206,349	$ (107,795)	$ (83,660)	$ 256,252	$ 235,691	$ (28,385)	$ 301,163	$ 379,898	$ 210,553
Weighted Average Number of Shares Outstanding, Common													40,292,000	40,337,000	39,158,000
Weighted Average Number of Shares Outstanding, Exchangeable													57,000	60,000	93,000
Weighted-average shares outstanding, basic (in shares)													40,349,000	40,397,000	39,251,000
Effect of dilutive securities, diluted (in shares)													809,000	1,221,000	1,115,000
Weighted-average shares outstanding, diluted (in shares)													41,158,000	41,618,000	40,366,000
Basic net income per share attributable to Vail Resorts, Inc.					$ (2.22)	$ 7.26	$ 5.12	$ (2.66)	$ (2.07)	$ 6.34	$ 5.82	$ (0.71)	$ 7.46	$ 9.40	$ 5.36
Diluted net income per share attributable to Vail Resorts, Inc.					$ (2.22)	$ 7.12	$ 5.02	$ (2.66)	$ (2.07)	$ 6.17	$ 5.67	$ (0.71)	$ 7.32	$ 9.13	$ 5.22
Anti-dilutive securities (in shares)													4,000	2,000	9,000
Estimated annual dividend amount (in dollars per share)				$ 7.04
Common Stock, Dividends, Per Share, Cash Paid													$ 6.46
Increase to annual cash dividend rate				20.00%
Cash dividends declared per share (in dollars per share)													$ 6.46	$ 5.046	$ 3.726
Dividends (Note 3)													$ 260,567	$ 204,161	$ 146,235
Scenario, Forecast [Member]
Cash dividends declared per share (in dollars per share)			$ 1.76
Dividends Payable, Date to be Paid	Oct. 25, 2019
Dividends Payable, Date of Record		Oct. 08, 2019
Common Stock [Member]
Stock Issued During Period, Shares, New Issues															3,327,719
Exchangeable Shares [Member]
Stock Issued During Period, Shares, New Issues															418,095