Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity.

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Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Aug. 01, 2018
Cumulative Translation Adjustment Summary [Roll Forward]
Cumulative loss on foreign currency translation, Beginning balance	$ (100,676)	$ (109,194)
Gain (loss) on foreign currency translation	(7,252)	8,518
Cumulative loss on foreign currency translation, Ending balance	$ (107,928)	$ (100,676)
Minimum
Subsequent Event [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption			$ 10,000
Maximum
Subsequent Event [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption			$ 15,000