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Retirement Plans - Actuarial Assumptions Used to Determine Net Pension Expense and Periodic Benefit Costs (Details)	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 24, 2012	Jun. 30, 2013	Jun. 24, 2012
Compensation and Retirement Disclosure [Abstract]
Discount rate	3.70%	4.50%	3.70%	4.50%
Rate of increase in compensation levels	3.00%	3.00%	3.00%	3.00%
Expected long-term rate of return on assets	6.00%	6.50%	6.00%	6.50%

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

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