Retirement Plans (Components Of Net Periodic Benefit Cost) (Details) (USD $) In Thousands	12 Months Ended
	Oct. 02, 2011	Oct. 03, 2010	Sep. 27, 2009
Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 9,982	$ 11,726	$ 9,045
Interest cost	18,557	17,704	15,334
Expected return on plan assets	(20,732)	(17,714)	(17,485)
Actuarial loss (gain)	8,518	9,969	55
Amortization of unrecognized prior service cost		124	124
Prior service cost due to curtailment		56
Net periodic benefit cost	16,325	21,865	7,073
Non-Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	806	829	641
Interest cost	3,023	3,003	2,907
Actuarial loss (gain)	1,305	1,189	396
Amortization of unrecognized prior service cost	488	465	707
Prior service cost due to curtailment		(176)
Net periodic benefit cost	5,622	5,486	4,651
Postretirement Health Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	80	106	99
Interest cost	1,585	1,435	1,199
Actuarial loss (gain)	202	64	(964)
Amortization of unrecognized prior service cost	31	184	185
Net periodic benefit cost	$ 1,898	$ 1,789	$ 519