Employee Benefit Plans (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Jul. 03, 2011	Jun. 27, 2010	Jul. 03, 2011	Jun. 27, 2010
Defined Benefit Plan Disclosure [Line Items]
Expected future benefit payments	$ 308,000		$ 308,000
Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Service cost	661	447	1,983	1,341
Interest cost	4,541	4,630	13,622	13,892
Expected return on plan assets	(5,743)	(5,195)	(16,623)	(14,478)
Amortization of prior service cost	21	34	64	100
Recognized net actuarial loss	3,157	2,360	9,471	7,082
Net periodic pension expense	2,637	2,276	8,517	7,937
Company's contribution to plan			50,000
Supplemental Employee Retirement Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Service cost	203	189	610	566
Interest cost	489	550	1,466	1,650
Amortization of prior service cost	62	62	186	186
Recognized net actuarial loss	380	344	1,140	1,032
Net periodic pension expense	1,134	1,145	3,402	3,434
Company's contribution to plan			924,000
Define Saving Plan
Defined Benefit Plan Disclosure [Line Items]
Company's contribution to plan	$ 6,113,000	$ 5,527,000	$ 16,630,000	$ 15,786,000