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Share-based Compensation (Tables) | 12 Months Ended
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Aug. 26, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Weighted Average Assumptions | The fair value of each Share-Based Award is estimated on the date of grant using the Black-Scholes option pricing model with the following weighted average assumptions used:
Fiscal year ended August | 2017 |  | 2016 |  | 2015
Risk-free interest rate | 1.58 | % |  | 1.76 | % |  | 1.92 | %
Expected dividend yield | 0.21 | % |  | 0.25 | % |  | 0.27 | %
Expected life in years | 7.43 |  |  | 7.40 |  |  | 7.44 |
Expected volatility | 24.0 | % |  | 29.3 | % |  | 32.2 | %
Summary of Share-based Award Activity | The following table summarizes the Share-Based Award activity for fiscal 2017:
| Number of Shares |  | Weighted Average Exercise Price
Outstanding, August 27, 2016 | 610,691 |  |  | $ | 83.17 |
Granted | 100,340 |  |  | 119.83 |
Exercised | (102,225 | ) |  | 50.33 |
Forfeited | (8,200 | ) |  | 76.14 |
Outstanding, August 26, 2017 | 600,606 |  |  | $ | 94.98 |
Exercisable, August 26, 2017 | 116,456 |  |  | $ | 72.13 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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