Income Taxes (Deferred Tax Assets And Deferred Tax Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Oct. 01, 2017
Income Tax Disclosure [Abstract]
Accrued defined benefit pension and postretirement benefits	$ 34,776	$ 67,334
Impairment	11,388	18,697
Accrued insurance	8,994	14,701
Tax loss and tax credit carryforwards	7,458	11,841
Share-based compensation	4,936	9,715
Lease commitments related to closed or refranchised locations	4,696	9,382
Accrued incentive compensation	2,055	628
Accrued vacation pay expense	2,034	1,560
Deferred income	1,535	2,289
Other reserves and allowances	851	1,386
Interest rate swaps	181	8,855
Other, net	2,206	2,960
Total gross deferred tax assets	81,110	149,348
Valuation allowance	(3,554)	(8,507)
Total net deferred tax assets	77,556	140,841
Intangible assets	(10,492)	(15,995)
Deferred Tax Liabilities, Leasing Arrangements	(2,790)	(758)
Property and equipment, principally due to differences in depreciation	(1,855)	(18,406)
Deferred Tax Liabilities, Other	(279)	(564)
Total gross deferred tax liabilities	(15,416)	(35,723)
Net deferred tax assets	$ 62,140	$ 105,118