Pensions (Details) (USD $)	3 Months Ended	12 Months Ended
	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012	Sep. 25, 2011	Sep. 26, 2010
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plan, Period Contributions			$ 398,000	$ 488,000	$ 497,000
Multiemployer Plans, Withdrawal Obligation	1,426,000		1,426,000	1,319,000
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months	11,000		11,000
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate			4.00%	5.00%	6.00%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	4.00%		4.00%	4.00%
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Gain (Loss), before Tax		2,287,000	(51,871,000)	(51,459,000)
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	66,319,000		66,319,000	71,230,000
Defined Benefit Plan, Benefit Obligation	201,219,000		201,219,000	186,826,000	178,179,000
Defined Benefit Plan, Accumulated Benefit Obligation				186,672,000
Defined Benefit Plan, Service Cost	(30,000)		30,000	169,000	792,000
Defined Benefit Plan, Interest Cost	7,975,000		(7,975,000)	8,354,000	8,888,000
Defined Benefit Plan, Actuarial Gain (Loss)			17,268,000	12,299,000
Defined Benefit Plan, Benefits Paid			(10,880,000)	(11,584,000)
Defined Benefit Plan, Administration Expenses			(1,472,000)	(1,428,000)
Defined Benefit Plan, Contributions by Employer		2,733,000	6,807,000	2,137,000
Defined Benefit Plan, Curtailments			0	(591,000)
Defined Benefit Plan, Expected Return on Plan Assets			(8,891,000)	(9,733,000)	(9,568,000)
Defined Benefit Plan, Amortization of Net Gains (Losses)	201,219,000		(2,370,000)	812,000	453,000
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit)			(136,000)	(137,000)	(136,000)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments			0	0	(2,004,000)
Defined Benefit Plan, Net Periodic Benefit Cost			1,348,000	(535,000)	(1,575,000)
Defined Benefit Plan, Fair Value of Plan Assets	134,900,000		134,900,000	115,596,000	125,464,000
Defined Benefit Plan, Actual Return on Plan Assets			24,849,000	1,007,000
Defined Benefit Plan, Funded Status of Plan	66,319,000		66,319,000	71,230,000
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax	(50,945,000)		(50,945,000)	(50,396,000)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost, before Tax		(137,000)	926,000	1,063,000
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Tax			(50,945,000)	(50,396,000)
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase				4.00%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets		0.00%	8.00%	8.00%	8.00%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase				4.00%	4.00%
Defined Benefit Plan, Expected Future Benefit Payments, Year Two	11,000		11,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Three	11,000		11,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Four	11,000		11,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Five	11,000		11,000
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter	58,000		58,000
Pension Plans, Defined Benefit [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum			50.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum			75.00%
Defined Benefit Plan, Actual Plan Asset Allocations	63.00%		63.00%	66.00%
Pension Plans, Defined Benefit [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum			25.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum			35.00%
Defined Benefit Plan, Actual Plan Asset Allocations	29.00%		29.00%	33.00%
Pension Plans, Defined Benefit [Member] | Fixed Income Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	32,169,494.000		32,169,494.000
Pension Plans, Defined Benefit [Member] | Fixed Income Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	7,759,444.000		7,759,444.000
Pension Plans, Defined Benefit [Member] | Fixed Income Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.000		0.000
Pension Plans, Defined Benefit [Member] | Other Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum			0.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum			12.00%
Defined Benefit Plan, Actual Plan Asset Allocations	0.00%		0.00%	0.00%
Pension Plans, Defined Benefit [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	2.00%		2.00%	1.00%
Pension Plans, Defined Benefit [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	2,028,505.000		2,028,505.000
Pension Plans, Defined Benefit [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.000		0.000
Pension Plans, Defined Benefit [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.000		0.000
Pension Plans, Defined Benefit [Member] | Plan Assets- Receivables, net [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	6.00%		6.00%	0.00%
Pension Plans, Defined Benefit [Member] | Plan Assets- Receivables, net [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	8,117,459.000		8,117,459.000
Pension Plans, Defined Benefit [Member] | Plan Assets- Receivables, net [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.000		0.000
Pension Plans, Defined Benefit [Member] | Plan Assets- Receivables, net [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.000		0.000
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months	3,280,000		3,280,000
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate		4.00%		5.00%	6.00%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	4.00%		4.00%	4.00%
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Gain (Loss), before Tax			16,570,000	27,000
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	4,016,000		4,016,000	3,000
Defined Benefit Plan, Benefit Obligation	30,728,000		30,728,000	26,472,000	50,482,000
Defined Benefit Plan, Service Cost	(728,000)		728,000	927,000	361,000
Defined Benefit Plan, Interest Cost	1,109,000		(1,109,000)	1,600,000	2,971,000
Defined Benefit Plan, Actuarial Gain (Loss)			5,269,000	(2,311,000)
Defined Benefit Plan, Benefits Paid			(2,965,000)	(2,922,000)
Defined Benefit Plan, Contributions by Employer			(690,000)	1,347,000
Defined Benefit Plan, Curtailments			0	(15,535,000)
Defined Benefit Plan, Expected Return on Plan Assets			(2,129,000)	(2,248,000)	(2,274,000)
Defined Benefit Plan, Amortization of Net Gains (Losses)			2,451,000	(2,467,000)	(2,447,000)
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit)			(1,459,000)	(1,455,000)	(1,994,000)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments			0	(16,137,000)	(43,008,000)
Defined Benefit Plan, Net Periodic Benefit Cost			(4,202,000)	(19,780,000)	(46,391,000)
Defined Benefit Plan, Fair Value of Plan Assets	34,263,000		34,263,000	38,529,000	41,447,000
Defined Benefit Plan, Actual Return on Plan Assets			2,127,000	19,000
Defined Benefit Plan, Funded Status of Plan	(3,535,000)		(3,535,000)	(12,057,000)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax	30,344,000		30,344,000	42,000
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost, before Tax			13,774,000	15,000
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Tax			30,344,000	42,000
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets		6.00%		6.00%	6.00%
Defined Benefit Plan, Expected Future Benefit Payments, Year Two	3,080,000		3,080,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Three	2,980,000		2,980,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Four	2,960,000		2,960,000
Defined Benefit Plan, Expected Future Benefit Payments, Year Five	2,900,000		2,900,000
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter	13,280,000		13,280,000
Other Postretirement Benefit Plans, Defined Benefit [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum			10.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum			30.00%
Defined Benefit Plan, Actual Plan Asset Allocations	21.00%		21.00%	8.00%
Other Postretirement Benefit Plans, Defined Benefit [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum			70.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum			90.00%
Defined Benefit Plan, Actual Plan Asset Allocations	75.00%		75.00%	85.00%
Other Postretirement Benefit Plans, Defined Benefit [Member] | Fixed Income Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.000		0.000
Other Postretirement Benefit Plans, Defined Benefit [Member] | Fixed Income Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	25,642,660.000		25,642,660.000
Other Postretirement Benefit Plans, Defined Benefit [Member] | Fixed Income Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.000		0.000
Other Postretirement Benefit Plans, Defined Benefit [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	2.00%		2.00%	7.00%
Other Postretirement Benefit Plans, Defined Benefit [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	691,905.000		691,905.000
Other Postretirement Benefit Plans, Defined Benefit [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.000		0.000
Other Postretirement Benefit Plans, Defined Benefit [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.000		0.000
Other Postretirement Benefit Plans, Defined Benefit [Member] | Plan Assets- Receivables, net [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	2.00%		2.00%	0.00%
Other Postretirement Benefit Plans, Defined Benefit [Member] | Plan Assets- Receivables, net [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	802,801.000		802,801.000
Other Postretirement Benefit Plans, Defined Benefit [Member] | Plan Assets- Receivables, net [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.000		0.000
Other Postretirement Benefit Plans, Defined Benefit [Member] | Plan Assets- Receivables, net [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.000		0.000
Other Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Funded Status of Plan	2,595,000		2,595,000	2,654,000
Funded Status of Other Plans Recognized In Other Liabilities	279,000		279,000
Equity Method Investee- TNI [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost			56,000	56,000	122,000
Domestic Equity Securities [Member] | Pension Plans, Defined Benefit [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	27,499,395.000		27,499,395.000
Domestic Equity Securities [Member] | Pension Plans, Defined Benefit [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	47,713,917.000		47,713,917.000
Domestic Equity Securities [Member] | Pension Plans, Defined Benefit [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.000		0.000
Domestic Equity Securities [Member] | Other Postretirement Benefit Plans, Defined Benefit [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	4,384,746.000		4,384,746.000
Domestic Equity Securities [Member] | Other Postretirement Benefit Plans, Defined Benefit [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	2,068,890.000		2,068,890.000
Domestic Equity Securities [Member] | Other Postretirement Benefit Plans, Defined Benefit [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.000		0.000
International Equity Securities [Member] | Pension Plans, Defined Benefit [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.000		0.000
International Equity Securities [Member] | Pension Plans, Defined Benefit [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	9,612,986.000		9,612,986.000
International Equity Securities [Member] | Pension Plans, Defined Benefit [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.000		0.000
International Equity Securities [Member] | Other Postretirement Benefit Plans, Defined Benefit [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.000		0.000
International Equity Securities [Member] | Other Postretirement Benefit Plans, Defined Benefit [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	671,069.000		671,069.000
International Equity Securities [Member] | Other Postretirement Benefit Plans, Defined Benefit [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 0.000		$ 0.000