Retirement Plans - Actuarial Assumptions Used to Determine Net Pension Expense (Details)	12 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 25, 2011
Medical Plan [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Discount rate	4.20%	4.20%	4.50%
Pension Plan [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Discount rate	3.70%	4.50%	5.00%
Rate of increase in compensation levels	3.08%	3.00%	3.00%
Expected long-term rate of return on assets	6.00%	6.50%	6.50%