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BALANCE SHEET COMPONENTS - Short-Term Investments (Details) - USD ($) $ in Thousands | Jul. 31, 2018 | Jul. 31, 2017
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Debt Securities, Available-for-sale, Maturity, Fair Value, Rolling Maturity [Abstract] |  |
Due within one year | $ 463,940 |
Due in one year through three years | 164,388 |
Total | $ 628,328 | $ 210,694

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- Definition Available-for-sale Securities, Debt Maturities, Rolling Year Two Through Three, Fair Value + References No definition available. + Details
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- References No definition available. + Details
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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References No definition available. + Details
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109979856&loc=d3e26626-111562 + Details
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