Employee Pension and Profit Sharing Plans - Multiemployer (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2012		Sep. 30, 2011		Oct. 01, 2010
Multiepmloyer Plans [Line Items]
Multiemployer Plan, Period Contributions	$ 22,301		$ 21,869		$ 20,885
National Retirement Fund
Multiepmloyer Plans [Line Items]
Multiemployer Plan, Period Contributions	4,868		5,367		5,672
Service Employees Pension Fund of Upstate New York (1)
Multiepmloyer Plans [Line Items]
Multiemployer Plan, Period Contributions	247	[1]	385	[1]	277	[1]
Percentage of Participants Covered by CBA	60.00%
Local 1102 Retirement Trust (2)
Multiepmloyer Plans [Line Items]
Multiemployer Plan, Period Contributions	201	[2]	232	[2]	211	[2]
Percentage of Participants Covered by CBA	90.00%
Central States SE and SW Areas Pension Plan
Multiepmloyer Plans [Line Items]
Multiemployer Plan, Period Contributions	3,164		2,869		2,758
Pension Plan for Hospital & Health Care Employees Philadelphia & Vicinity
Multiepmloyer Plans [Line Items]
Multiemployer Plan, Period Contributions	154		122		240
Richmond Teamsters and Industry Pension Fund (3)
Multiepmloyer Plans [Line Items]
Multiemployer Plan, Period Contributions	121	[3]	109	[3]	98	[3]
Other funds
Multiepmloyer Plans [Line Items]
Multiemployer Plan, Period Contributions	$ 13,546		$ 12,785		$ 11,629

[1] Over 60% of the Company's participants in this fund are covered by a single CBA that expires on 6/30/2015.

[2] Over 90% of the Company's participants in this fund are covered by a single CBA that expires on 6/30/2015.

[3] The Company is one of two participants in this fund along with Hostess Brands Inc., which is currently in bankruptcy. Additionally, the fund has informed the Company that the fund exercised an automatic 5-year amortization extension that affected the calculation of the fund's PPA zone status. Target Allocation Equity Securities50%70% Debt Securities30%50%