Capital Stock and Share Repurchase Share Repurchase (Details) - $ / shares |
9 Months Ended | 12 Months Ended | 33 Months Ended | ||
|---|---|---|---|---|---|
May. 31, 2015 |
Aug. 31, 2014 |
Aug. 31, 2013 |
Aug. 31, 2012 |
May. 31, 2015 |
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| Equity [Abstract] | |||||
| Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased | 8,594,683 | 8,594,683 | |||
| Treasury Stock, Shares, Acquired | 7,209,958 | 8,211,846 | 1,324,762 | 2,658,751 | 19,405,317 |
| Treasury Stock Acquired, Average Cost Per Share | $ 28.35 | $ 34.52 | $ 31.55 | $ 23.70 | $ 30.54 |
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- References No definition available.
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- Definition The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. No definition available.
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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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