Equity Based Compensation (Summary Of Stock Option Activity) (Details)	9 Months Ended
Apr. 30, 2017 $ / shares shares
Options Outstanding
Outstanding at July 31, 2016 \| shares	6,822,390
Granted \| shares	888,500
Exercised \| shares	(776,477)
Canceled \| shares	(38,530)
Outstanding at January 31, 2017 \| shares	6,895,883
Weighted Average Exercise Price
Weighted Average Exercise Price, Beginning Balance (in usd per share) \| $ / shares	$ 30.09
Weighted Average Exercise Price, Granted (in usd per share) \| $ / shares	42.65
Weighted Average Exercise Price, Exercised (in usd per share) \| $ / shares	23.87
Weighted Average Exercise Price, Canceled (in usd per share) \| $ / shares	36.14
Weighted Average Exercise Price, Ending Balance (in usd per share) \| $ / shares	$ 32.37

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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