Annual report pursuant to Section 13 and 15(d)

The Company and Its Significant Accounting Policies Share-Based Compensation (Details)

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The Company and Its Significant Accounting Policies Share-Based Compensation (Details)
12 Months Ended
Sep. 30, 2012
Sep. 25, 2011
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Volatility 31.50% 30.80%
Risk-free interest rate 1.00% 2.10%
Dividend yield 1.50% 1.50%
Post-vest forfeiture rate 9.00% 9.80%
Suboptimal exercise factor 1.7 1.8