The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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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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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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For presentations that combine terminations, 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 or that expired.

+ References

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Weighted average price of options that were either forfeited or expired.

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

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No definition available.

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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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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No definition available.

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

+ References

No definition available.

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

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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Stock-based Compensation (Schedule of Stock Options Activity) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Income tax benefit (expense) from stock-based award	$ 1.1	$ 1.4	$ 1.2
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Number of Shares	5,960
Granted, Number of Shares
Exercised, Number of Shares	(5,960)
Forfeited or expired, Number of Shares
Outstanding, Number of Shares		5,960
Exercisable, Number of Shares
Outstanding, Weighted-Average Exercise Price Per Share	$ 36.03
Granted, Weighted-Average Exercise Price Per Share
Exercised, Weighted-Average Exercise Price Per Share	36.03
Forfeited or expired, Weighted-Average Exercise Price Per Share
Outstanding, Weighted-Average Exercise Price Per Share		$ 36.03
Exercisable, Weighted-Average Exercise Price Per Share
Total intrinsic value of stock options exercised	$ 0.5	$ 1.6	2.5
Income tax benefit (expense) from stock-based award	$ 0.1	$ 0.4	$ 0.7