Employee Pension and Profit Sharing Plans - Asset Allocation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2012 Equity Securities	Sep. 28, 2012 Debt Securities	Sep. 28, 2012 Pension Plans	Sep. 30, 2011 Pension Plans	Oct. 01, 2010 Pension Plans	Sep. 28, 2012 Pension Plans Fair Value Disclosure	Sep. 30, 2011 Pension Plans Fair Value Disclosure	Sep. 28, 2012 Pension Plans Quoted Prices in Active Markets Level 1	Sep. 30, 2011 Pension Plans Quoted Prices in Active Markets Level 1	Sep. 28, 2012 Pension Plans Significant Other Observable Inputs Level 2	Sep. 30, 2011 Pension Plans Significant Other Observable Inputs Level 2	Sep. 28, 2012 Pension Plans Significant Unobservable Inputs Level 3	Sep. 30, 2011 Pension Plans Significant Unobservable Inputs Level 3	Sep. 28, 2012 Pension Plans Cash and Cash Equivalents and Other Fair Value Disclosure	Sep. 30, 2011 Pension Plans Cash and Cash Equivalents and Other Fair Value Disclosure	Sep. 28, 2012 Pension Plans Cash and Cash Equivalents and Other Quoted Prices in Active Markets Level 1	Sep. 30, 2011 Pension Plans Cash and Cash Equivalents and Other Quoted Prices in Active Markets Level 1	Sep. 28, 2012 Pension Plans Cash and Cash Equivalents and Other Significant Other Observable Inputs Level 2	Sep. 30, 2011 Pension Plans Cash and Cash Equivalents and Other Significant Other Observable Inputs Level 2	Sep. 28, 2012 Pension Plans Cash and Cash Equivalents and Other Significant Unobservable Inputs Level 3	Sep. 30, 2011 Pension Plans Cash and Cash Equivalents and Other Significant Unobservable Inputs Level 3	Sep. 28, 2012 Pension Plans Pooled Funds - Equity Fair Value Disclosure	Sep. 30, 2011 Pension Plans Pooled Funds - Equity Fair Value Disclosure	Sep. 28, 2012 Pension Plans Pooled Funds - Equity Quoted Prices in Active Markets Level 1	Sep. 30, 2011 Pension Plans Pooled Funds - Equity Quoted Prices in Active Markets Level 1	Sep. 28, 2012 Pension Plans Pooled Funds - Equity Significant Other Observable Inputs Level 2	Sep. 30, 2011 Pension Plans Pooled Funds - Equity Significant Other Observable Inputs Level 2	Sep. 28, 2012 Pension Plans Pooled Funds - Equity Significant Unobservable Inputs Level 3	Sep. 30, 2011 Pension Plans Pooled Funds - Equity Significant Unobservable Inputs Level 3	Sep. 28, 2012 Pension Plans Equity Funds, Domestic	Sep. 28, 2012 Pension Plans Equity Funds, International	Sep. 28, 2012 Pension Plans Pooled Funds - Fixed Income Fair Value Disclosure	Sep. 30, 2011 Pension Plans Pooled Funds - Fixed Income Fair Value Disclosure	Sep. 28, 2012 Pension Plans Pooled Funds - Fixed Income Quoted Prices in Active Markets Level 1	Sep. 30, 2011 Pension Plans Pooled Funds - Fixed Income Quoted Prices in Active Markets Level 1	Sep. 28, 2012 Pension Plans Pooled Funds - Fixed Income Significant Other Observable Inputs Level 2	Sep. 30, 2011 Pension Plans Pooled Funds - Fixed Income Significant Other Observable Inputs Level 2	Sep. 28, 2012 Pension Plans Pooled Funds - Fixed Income Significant Unobservable Inputs Level 3	Sep. 30, 2011 Pension Plans Pooled Funds - Fixed Income Significant Unobservable Inputs Level 3	Sep. 28, 2012 Pension Plans Fixed Income Funds, Domestic	Sep. 28, 2012 Pension Plans Fixed Income Funds, International
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets			$ 222,272	$ 178,587	$ 175,943	$ 222,272	$ 178,587	$ 2,042	$ 1,610	$ 220,230	$ 176,977	$ 0	$ 0	$ 2,042	$ 1,610	$ 2,042	$ 1,610	$ 0	$ 0	$ 0	$ 0	$ 141,784	$ 104,168	$ 0	$ 0	$ 141,784	$ 104,168	$ 0	$ 0			$ 78,446	$ 72,809	$ 0	$ 0	$ 78,446	$ 72,809	$ 0	$ 0
Target Plan Asset Allocations Range Minimum	50.00%	30.00%
Target Plan Asset Allocations Range Maximum	70.00%	50.00%
Actual plan asset allocations																														31.00%	69.00%									11.00%	89.00%