Supplementary Balance Sheet Information (Composition Of Goodwill And Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Balance Sheet Related Disclosures [Abstract]
Disposal Group, Including Discontinued Operation, Intangible Assets	$ 39,400
Current Fiscal Year End Date	--07-31
Goodwill	$ 526,391	$ 517,787
Accumulated amortization	(17,354)	(17,354)
Goodwill, net	509,037	500,433	$ 378,148
Gross indefinite-lived intangible assets	105,253	105,150
Accumulated amortization	(24,713)	(24,713)
Indefinite-lived intangible assets, net	80,540	80,437
Gross amortizable intangible assets	79,524	118,482
Accumulated amortization	(20,057)	(54,770)
Amortizable intangible assets, net	59,467	63,712
Total gross intangible assets	184,777	223,632
Total accumulated amortization	(44,770)	(79,483)
Net Intangible Assets Excluding Goodwill	140,007	144,149
Amortization of Intangible Assets	4,700	$ 5,100	$ 4,000
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 2,400