Income Taxes (Components Of Deferred Tax Liabilities And Assets) (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2012	Jul. 31, 2011
Income Tax Disclosure [Abstract]
Fixed assets	$ 145,316	$ 131,024
Intangible assets	34,859	34,350
Real estate and other investments	3,511	5,326
Total	183,686	170,700
Deferred membership revenue	21,056	22,668
Real estate and other investments	0	(2,124)
Deferred compensation and other accrued benefits	9,196	10,093
Stock-based compensation	15,053	13,436
Unfavorable lease obligation, net	14,855	15,754
Net operating loss carryforwards other tax credits	4,083	2,187
Other, net	7,516	1,985
Total	71,759	68,247
Valuation allowance for deferred income taxes	(1,588)	(1,588)
Deferred income tax assets, net of valuation allowance	70,171	66,659
Net deferred income tax liability	$ 113,515	$ 104,041