Retirement Plans (Reconciliation Of The Changes In Benefit Obligations, Plan Assets And Funded Status Of Retirement Plans) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Oct. 03, 2010
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Cost of VERP	$ 6,167
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value at beginning of year	261,835
Fair value at end of year	311,988	261,835
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Net actuarial loss	78,619	36,862	8,426
Qualified Pension Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Obligation at beginning of year	354,472	321,941
Service cost	9,068	9,982	11,726
Interest cost	19,891	18,557	17,704
Participant contributions	0	0
Actuarial loss	98,120	10,954
Benefits paid	(21,621)	(6,962)
Other	0	0
Cost of VERP	6,167	0	0
Obligation at end of year	466,097	354,472	321,941
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value at beginning of year	261,835	270,819
Actual return on plan assets	53,174	(2,022)
Participant contributions	0	0
Employer contributions	18,600	0
Benefits paid and other	(21,621)	(6,962)
Fair value at end of year	311,988	261,835	270,819
Funded status at end of year	(154,109)	(92,637)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Current liabilities	0	0
Noncurrent liabilities	(154,109)	(92,637)
Total liability recognized	(154,109)	(92,637)
Unamortized actuarial loss, net	180,044	126,638
Unamortized prior service cost	0	0
Total	180,044	126,638
Net actuarial loss	65,278	33,708
Amortization of actuarial loss	(11,871)	(8,518)	(9,969)
Amortization of prior service cost	0	0
Total recognized in OCI	53,407	25,190
Net periodic benefit cost and other losses	26,665	16,325	21,865
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Income	80,072	41,515
Net actuarial loss	15,665
Prior service cost	0
Total	15,665
Non-Qualified Pension Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Obligation at beginning of year	55,604	53,505
Service cost	466	806	829
Interest cost	3,056	3,023	3,003
Participant contributions	0	0
Actuarial loss	6,767	1,391
Benefits paid	(3,404)	(3,121)
Other	667	0
Cost of VERP	0	0
Obligation at end of year	63,156	55,604	53,505
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value at beginning of year	0	0
Actual return on plan assets	0	0
Participant contributions	0	0
Employer contributions	3,404	3,121
Benefits paid and other	(3,404)	(3,121)
Fair value at end of year	0	0	0
Funded status at end of year	(63,156)	(55,604)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Current liabilities	(3,411)	(3,381)
Noncurrent liabilities	(59,745)	(52,223)
Total liability recognized	(63,156)	(55,604)
Unamortized actuarial loss, net	22,029	16,401
Unamortized prior service cost	1,618	2,050
Total	23,647	18,451
Net actuarial loss	6,767	1,391
Amortization of actuarial loss	(1,140)	(1,305)	(1,189)
Amortization of prior service cost	(432)	(488)
Total recognized in OCI	5,195	(402)
Net periodic benefit cost and other losses	5,094	5,622	5,486
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Income	10,289	5,220
Net actuarial loss	2,170
Prior service cost	269
Total	2,439
Postretirement Health Plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Obligation at beginning of year	29,578	27,819
Service cost	61	80	106
Interest cost	1,617	1,585	1,435
Participant contributions	134	143
Actuarial loss	6,574	1,763
Benefits paid	(1,512)	(1,812)
Other	855	0
Cost of VERP	0	0
Obligation at end of year	37,307	29,578	27,819
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value at beginning of year	0	0
Actual return on plan assets	0	0
Participant contributions	134	143
Employer contributions	523	1,669
Benefits paid and other	(657)	(1,812)
Fair value at end of year	0	0	0
Funded status at end of year	(37,307)	(29,578)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Current liabilities	(1,440)	(1,395)
Noncurrent liabilities	(35,867)	(28,183)
Total liability recognized	(37,307)	(29,578)
Unamortized actuarial loss, net	14,427	7,942
Unamortized prior service cost	0	0
Total	14,427	7,942
Net actuarial loss	6,574	1,763
Amortization of actuarial loss	(89)	(202)	(64)
Amortization of prior service cost	0	(31)
Total recognized in OCI	6,485	1,530
Net periodic benefit cost and other losses	1,767	1,898	1,789
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Income	8,252	3,428
Net actuarial loss	791
Prior service cost	0
Total	$ 791