Retirement Plans (Reconciliation Of The Changes In Benefit Obligations, Plan Assets And Funded Status Of Retirement Plans) (Details) (USD $) In Thousands	12 Months Ended
	Oct. 02, 2011	Oct. 03, 2010	Sep. 27, 2009
Defined Benefit Plan Disclosure [Line Items]
Fair value at beginning of year	$ 270,819
Fair value at end of year	261,835	270,819
Total recognized in OCI	(36,862)	(8,426)	(103,415)
Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Obligation at beginning of year	321,941	290,469
Service cost	9,982	11,726	9,045
Interest cost	18,557	17,704	15,334
Actuarial loss	10,954	26,594
Benefits paid	(6,962)	(8,061)
Net gain arising due to curtailment		(16,491)
Obligation at end of year	354,472	321,941	290,469
Fair value at beginning of year	270,819	231,584
Actual return on plan assets	(2,022)	27,296
Employer contributions		20,000
Benefits paid	(6,962)	(8,061)
Fair value at end of year	261,835	270,819	231,584
Funded status at end of year	(92,637)	(51,122)
Noncurrent liabilities	(92,637)	(51,122)
Total liability recognized	(92,637)	(51,122)
Unamortized actuarial loss, net	126,638	101,447
Total	126,638	101,447
Net actuarial loss	33,708	17,012
Amortization of actuarial loss	(8,518)	(9,969)	(55)
Amortization of prior service cost		(124)
Prior service cost due to curtailment		(56)
Net gain arising due to curtailment		(16,491)
Total recognized in OCI	25,190	(9,628)
Net periodic benefit cost and other losses	16,325	21,865	7,073
Total recognized in comprehensive income	41,515	12,237
Net actuarial loss	11,272
Total	11,272
Non-Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Obligation at beginning of year	53,505	49,445
Service cost	806	829	641
Interest cost	3,023	3,003	2,907
Actuarial loss	1,391	3,053
Benefits paid	(3,121)	(3,001)
Plan amendment		176
Obligation at end of year	55,604	53,505	49,445
Fair value at beginning of year
Employer contributions	3,121	3,001
Benefits paid	(3,121)	(3,001)
Fair value at end of year
Funded status at end of year	(55,604)	(53,505)
Current liabilities	(3,381)	(3,184)
Noncurrent liabilities	(52,223)	(50,321)
Total liability recognized	(55,604)	(53,505)
Unamortized actuarial loss, net	16,401	16,316
Unamortized prior service cost	2,050	2,538
Total	18,451	18,854
Net actuarial loss	1,391	3,053
Amortization of actuarial loss	(1,305)	(1,189)	(396)
Amortization of prior service cost	(488)	(465)
Prior service cost due to curtailment		176
Total recognized in OCI	(402)	1,575
Net periodic benefit cost and other losses	5,622	5,486	4,651
Total recognized in comprehensive income	5,220	7,061
Net actuarial loss	1,140
Prior service cost	432
Total	1,572
Postretirement Health Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Obligation at beginning of year	27,819	23,828
Service cost	80	106	99
Interest cost	1,585	1,435	1,199
Participant contributions	143	142
Actuarial loss	1,763	4,677
Benefits paid	(1,812)	(2,369)
Obligation at end of year	29,578	27,819	23,828
Participant contributions	143	142
Employer contributions	1,669	2,227
Benefits paid	(1,812)	(2,369)
Funded status at end of year	(29,578)	(27,819)
Current liabilities	(1,395)	(1,193)
Noncurrent liabilities	(28,183)	(26,626)
Total liability recognized	(29,578)	(27,819)
Unamortized actuarial loss, net	7,942	6,381
Unamortized prior service cost		31
Total	7,942	6,412
Net actuarial loss	1,763	4,677
Amortization of actuarial loss	(202)	(64)	964
Amortization of prior service cost	(31)	(184)
Total recognized in OCI	1,530	4,429
Net periodic benefit cost and other losses	1,898	1,789	519
Total recognized in comprehensive income	3,428	6,218
Net actuarial loss	89
Total	$ 89