Retirement Plans - Additional Information (Details) (USD $)	12 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 25, 2011
Retirement Plans [Line Items]
Trustee and administrative expenses for Pension Plan	$ 700,000	$ 600,000	$ 500,000
Pension contribution to multi-employer plans	900,000	800,000	800,000
Early Retiree Medical Premium Reimbursement Plan [Member]
Retirement Plans [Line Items]
Maximum benefit under the plan per month	500
Maximum retirement benefit plan payment period	120 months
Profit Sharing [Member]
Retirement Plans [Line Items]
Expenses recognized for plan	1,100,000	1,100,000	600,000
Company contribution percentage	7.50%
Maximum [Member]
Retirement Plans [Line Items]
Multi-employer pension plans funded, red zone	65.00%
Multi-employer pension plans funded, yellow zone	80.00%
Minimum [Member]
Retirement Plans [Line Items]
Multi-employer pension plans funded, green zone	80.00%
Southern California United Food and Commercial Workers Unions and Food Employers Joint Pension Plan [Member] | Minimum [Member]
Retirement Plans [Line Items]
Total contribution to pension plan	5.00%
Fixed Income [Member]
Retirement Plans [Line Items]
Strategic target asset allocation	65.00%
Equity [Member]
Retirement Plans [Line Items]
Strategic target asset allocation	35.00%
Pension Plan [Member]
Retirement Plans [Line Items]
Expenses recognized for Plan	8,400,000	6,900,000	6,000,000
Company contribution to defined benefit pension plan	3,900,000
Medical Plan [Member]
Retirement Plans [Line Items]
Company contribution to defined benefit pension plan	100,000
Expenses recognized for plan	$ 300,000		$ 200,000