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Stock-Based Compensation - Schedule of RSU Activity (Details) - Restricted stock units and performance stock units - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Jan. 31, 2020	Jul. 31, 2019
Underlying Shares
Beginning balance (in shares)	4,152
Granted (in shares)	2,106
Vested (in shares)	(509)
Canceled or forfeited (in shares)	(318)
Ending balance (in shares)	5,431
Weighted-Average Grant Date Fair Value
Beginning balance (in dollars per share)	$ 48.51
Granted (in dollars per share)	48.63
Vested (in dollars per share)	39.20
Canceled or forfeited (in shares)	53.77
Ending balance (in dollars per share)	$ 49.12
Aggregate Intrinsic Value
Balance	$ 304,659	$ 349,872
Vested	$ 23,987

X

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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Intrinsic value of outstanding award under share-based payment arrangement. Excludes share and unit options.

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Intrinsic value of vested award under share-based payment arrangement. Excludes share and unit options.

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