Net Income Per Share (Details) - shares shares in Thousands	12 Months Ended
Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2016
Earnings Per Share [Abstract]
Weighted average common shares outstanding	231,793	228,686	228,846
Effect of dilutive securities — stock options	10,084	8,333	15,449
Weighted average common and dilutive potential common shares outstanding	241,877	237,019	244,295

No definition available.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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