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Income Taxes - Schedule Of Total Deferred Tax Assets And Liabilities (Details) - USD ($) $ in Thousands | Jul. 31, 2019 | Jul. 31, 2018
--- | --- | ---
Deferred tax assets | $ 273,273 | $ 97,375
Deferred tax liabilities | (322,855) | (18,931)
Valuation allowance | (12,945) |
Net deferred tax (liabilities) | $ (62,527) |
Net deferred tax assets |  | $ 78,444

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