The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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-Name Accounting Standards Codification

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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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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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Stock Option Plans (Summary Of Information Concerning Outstanding And Exercisable Options) (Details) - $ / shares	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number Outstanding	7,191,442	7,197,882	7,329,820	8,056,327
Weighted Average Remaining Contractual Life (Years)	5 years 6 months
Weighted Average Exercise Price	$ 29.38
Number Exercisable	5,434,302
Weighted Average Exercise Price	$ 26.29
Range Three [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, lower range	23.70
Range of Exercise Prices, upper range	$ 29.69
Number Outstanding	821,268
Weighted Average Remaining Contractual Life (Years)	5 years 4 months 2 days
Weighted Average Exercise Price	$ 29.12
Number Exercisable	821,268
Weighted Average Exercise Price	$ 29.12
Range One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, lower range	0.00
Range of Exercise Prices, upper range	$ 17.69
Number Outstanding	1,366,763
Weighted Average Remaining Contractual Life (Years)	1 year 11 months 12 days
Weighted Average Exercise Price	$ 17.08
Number Exercisable	1,366,763
Weighted Average Exercise Price	$ 17.08
Range Four [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, lower range	29.70
Range of Exercise Prices, upper range	$ 35.69
Number Outstanding	1,719,689
Weighted Average Remaining Contractual Life (Years)	6 years 7 months 24 days
Weighted Average Exercise Price	$ 34.23
Number Exercisable	1,463,974
Weighted Average Exercise Price	$ 34.32
Range Five [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, lower range	$ 35.70
Number Outstanding	1,850,927
Weighted Average Remaining Contractual Life (Years)	8 years 8 months 1 day
Weighted Average Exercise Price	$ 40.22
Number Exercisable	349,502
Weighted Average Exercise Price	$ 41.76
Range Two [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, lower range	17.70
Range of Exercise Prices, upper range	$ 23.69
Number Outstanding	1,432,795
Weighted Average Remaining Contractual Life (Years)	3 years 6 months 7 days
Weighted Average Exercise Price	$ 21.47
Number Exercisable	1,432,795
Weighted Average Exercise Price	$ 21.47