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Supplementary Balance Sheet Information (Composition Of Goodwill And Intangible Assets) (Details) - USD ($) $ in Thousands | Jul. 31, 2015 | Jul. 31, 2014 | Jul. 31, 2013
--- | --- | --- | ---
Balance Sheet Related Disclosures [Abstract] |  |  |
Goodwill | $ 517,787 | $ 395,502 |
Accumulated amortization | (17,354) | (17,354) |
Goodwill, net | 500,433 | 378,148 | $ 381,699
Gross indefinite-lived intangible assets | 105,150 | 100,834 |
Accumulated amortization | (24,713) | (24,713) |
Indefinite-lived intangible assets, net | 80,437 | 76,121 |
Gross amortizable intangible assets | 118,482 | 91,233 |
Accumulated amortization | (54,770) | (49,831) |
Amortizable intangible assets, net | 63,712 | 41,402 |
Total gross intangible assets | 223,632 | 192,067 |
Total accumulated amortization | (79,483) | (74,544) |
Net Intangible Assets Excluding Goodwill | $ 144,149 | $ 117,523 |

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