Equity Based Compensation (Summary Of Stock Option Activity) (Details)	3 Months Ended
Oct. 31, 2016 $ / shares shares
Options Outstanding
Outstanding at July 31, 2016 \| shares	6,822,390
Granted \| shares	0
Exercised \| shares	(209,987)
Canceled \| shares	(30,366)
Outstanding at October 31, 2016 \| shares	6,582,037
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	0.00
Weighted Average Exercise Price, Exercised (in usd per share) \| $ / shares	20.94
Weighted Average Exercise Price, Canceled (in usd per share) \| $ / shares	36.96
Weighted Average Exercise Price, Ending Balance (in usd per share) \| $ / shares	$ 30.35

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=6415400&loc=d3e5070-113901

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Number of options outstanding, including both vested and non-vested options.

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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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