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Supplementary Balance Sheet Information (Composition Of Goodwill And Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Balance Sheet Related Disclosures [Abstract]
Goodwill	$ 395,502	$ 399,053
Accumulated amortization	(17,354)	(17,354)
Goodwill, net	378,148	381,699	269,769
Gross indefinite-lived intangible assets	100,834	100,889
Accumulated amortization	(24,713)	(24,713)
Indefinite-lived intangible assets, net	76,121	76,176
Gross amortizable intangible assets	91,233	90,990
Accumulated amortization	(49,831)	(45,822)
Amortizable intangible assets, net	41,402	45,168
Total gross intangible assets	192,067	191,879
Total accumulated amortization	(74,544)	(70,535)
Net Intangible Assets Excluding Goodwill	$ 117,523	$ 121,344

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