|
Equity Plans - Share Based Compensation (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
|
3 Months Ended |
9 Months Ended |
|
|
May 30, 2013
|
May 31, 2012
|
May 30, 2013
|
May 31, 2012
|
May 30, 2013
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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|
|
|
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| Number of shares of common stock reserved for issuance for stock options and restricted stock awards (in shares) |
169.9 |
|
169.9 |
|
|
| Number of shares subject to outstanding awards (in shares) |
94.2 |
|
94.2 |
|
|
| Number of shares available for future awards (in shares) |
75.7 |
|
75.7 |
|
|
| Stock Options |
|
|
|
|
|
| Number of shares granted (in shares) |
0.3 |
0.8 |
17.6 |
21.2 |
|
| Weighted average grant date fair value per share for options granted (in dollars per share) |
$ 4.79 |
$ 3.66 |
$ 3.29 |
$ 3.18 |
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| Fair Value Assumptions, Method Used |
|
|
Black-Scholes |
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| Average expected life (in years) |
4 years 9 months |
5 years |
5 years 1 month |
5 years 1 month |
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| Weighted-average expected volatility (in hundredths) |
55.00% |
61.00% |
60.00% |
66.00% |
|
| Weighted-average risk-free interest rate (in hundredths) |
0.70% |
0.90% |
0.70% |
1.00% |
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| Restricted Stock Awards |
|
|
|
|
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| Number of Shares - Outstanding (in shares) |
|
|
|
|
13.2 |
| Weighted Average Grant Date Fair Value Per Share - Granted (in dollars per share) |
$ 9.97 |
$ 6.82 |
$ 6.21 |
$ 5.43 |
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|
Service-based awards [Member]
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|
|
|
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| Restricted Stock Awards |
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|
|
|
|
| Number of Shares - Granted (in shares) |
0 |
0.1 |
5.4 |
3.9 |
|
|
Performance-based shares [Member]
|
|
|
|
|
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| Restricted Stock Awards |
|
|
|
|
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| Number of Shares - Outstanding (in shares) |
|
|
|
|
3.5 |
| Number of Shares - Granted (in shares) |
0 |
0 |
1.2 |
1.9 |
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