Summary of Significant Accounting Policies (Allocation Of Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Pre-tax stock-based compensation expense	$ 17,025	$ 15,753	$ 14,224
Less: benefit for income taxes	6,057	6,026	5,435
Net stock-based compensation expense	10,968	9,727	8,789
Mountain Operating Expense [Member]
Pre-tax stock-based compensation expense	13,404	11,841	10,292
Lodging Operating Expense [Member]
Pre-tax stock-based compensation expense	3,094	2,621	2,203
Real Estate Operating Expense [Member]
Pre-tax stock-based compensation expense	$ 527	$ 1,291	$ 1,729