Income Taxes (Schedule Of Tax Effects Of Temporary Differences That Generated Deferred Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 29, 2012	Oct. 01, 2011
Income Tax Disclosure [Abstract]
Benefit accruals	$ 219,396	$ 188,473
Inventory reserves	30,953	29,449
Tax benefit carryforwards	14,928	11,789
Contract loss reserves not currently deductible	12,124	14,231
Other accrued expenses	14,563	13,303
Total gross deferred tax assets	291,964	257,245
Less valuation allowance	(1,746)	(4,106)
Total net deferred tax assets	290,218	253,139
Differences in bases and depreciation of property, plant and equipment	172,253	166,039
Pension	49,293	50,061
Foreign currency	1,963	1,492
Other	415	0
Total gross deferred tax liabilities	223,924	217,592
Net deferred tax assets	$ 66,294	$ 35,547