Summary of Significant Accounting Policies (Allocation Of Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2019
Pre-tax stock-based compensation expense	$ 24,395	$ 21,021	$ 19,856
Less: benefit for income taxes	5,871	5,027	4,589
Net stock-based compensation expense	18,524	15,994	15,267
Mountain Operating Expense [Member]
Pre-tax stock-based compensation expense	20,311	17,410	16,474
Lodging Operating Expense [Member]
Pre-tax stock-based compensation expense	3,783	3,399	3,219
Real Estate Operating Expense [Member]
Pre-tax stock-based compensation expense	$ 301	$ 212	$ 163