Net Income Per Common Share (Summary of Calculation of Basic and Diluted EPS) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Oct. 31, 2017	Oct. 31, 2016
Net loss attributable to Vail Resorts, Inc.	$ (28,385)	$ (62,587)
Weighted-average Vail Resorts shares outstanding	40,147	36,766
Weighted-average Exchangeco shares outstanding	64	68
Total Weighted-average shares outstanding	40,211	36,834
Effect of dilutive securities	0	0
Weighted Average Number of Shares Outstanding, Diluted	40,211	36,834
Basic net loss per share attributable to Vail Resorts, Inc.	$ (0.71)	$ (1.70)
Diluted net loss per share attributable to Vail Resorts, Inc.	$ (0.71)	$ (1.70)