Income Taxes (Deferred Tax Assets And Deferred Tax Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2014	Sep. 29, 2013
Income Tax Disclosure [Abstract]
Accrued pension and postretirement benefits	$ 77,170	$ 66,698
Accrued insurance	12,874	13,115
Accrued vacation pay expense	2,132	3,259
Deferred income	1,436	1,441
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Impairment Losses	25,391	27,944
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Restructuring Charges	12,686	11,361
Other reserves and allowances	1,303	3,964
Tax loss and tax credit carryforwards	10,705	4,619
Leasing transactions	7,201	7,471
Share-based compensation	9,416	13,128
Other, net	4,508	4,280
Total gross deferred tax assets	164,822	157,280
Valuation allowance	(8,624)	(4,619)
Total net deferred tax assets	156,198	152,661
Property and equipment, principally due to differences in depreciation	(38,362)	(9,753)
Intangible assets	(28,149)	(27,350)
Deferred Tax Liabilities, Other	(2,069)	(40)
Total gross deferred tax liabilities	(68,580)	(37,143)
Net deferred tax assets	$ 87,618	$ 115,518