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Retirement Plans (Reconciliation Of The Changes In Benefit Obligations, Plan Assets And Funded Status Of Retirement Plans) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2018 | Oct. 01, 2017 | Oct. 02, 2016
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |
Fair value at beginning of year | $ 460,709 |  |
Fair value at end of year | 456,127 | $ 460,709 |
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract] |  |  |
Actuarial gains (losses) arising during the period | (31,478) | (49,025) | $ (71,971)
Total recognized in OCI | (36,466) | (55,454) | 67,425
Supplemental Employee Retirement Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant | 0 | 0 |
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant | 0 | 0 |
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] |  |  |
Obligation at beginning of year | 78,401 | 81,450 |
Service cost | 490 | 855 | 773
Interest cost | 2,894 | 2,850 | 3,253
Actuarial gain | (4,686) | (2,296) |
Benefits paid | (4,032) | (4,458) |
Settlements | 0 | 0 |
Other | 0 | 0 |
Obligation at end of year | 73,067 | 78,401 | 81,450
Defined Benefit Plan, Funded (Unfunded) Status of Plan | (73,067) | (78,401) |
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 |
Employer contributions | 4,032 | 4,458 |
Benefits paid | (4,032) | (4,458) |
Settlements | 0 | 0 |
Defined Benefit Plan, Other | 0 | 0 |
Fair value at end of year | 0 | 0 | 0
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract] |  |  |
Current liabilities | (5,037) | (4,448) |
Noncurrent liabilities | (68,030) | (73,953) |
Total liability recognized | (73,067) | (78,401) |
Unamortized actuarial loss, net | 27,239 | 33,462 |
Unamortized prior service cost | (271) | (418) |
Total | 27,510 | 33,880 |
Actuarial gains (losses) arising during the period | 4,686 | 2,296 |
Amortization of actuarial loss (gain) | (1,538) | (1,659) |
Amortization of prior service cost | (146) | (153) |
Total recognized in OCI | (6,370) | (4,108) |
Net periodic benefit cost and other losses | 5,068 | 5,517 | 5,525
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Income | (1,302) | 1,409 |
Net actuarial loss | (1,207) |  |
Prior service cost | 115 |  |
Total | 1,322 |  |
Postretirement Health Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant | 115 | 118 |
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant | 115 | 118 |
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] |  |  |
Obligation at beginning of year | 25,660 | 28,214 |
Service cost | 0 | 0 |
Interest cost | 955 | 1,003 | 1,263
Actuarial gain | (1,720) | (2,652) |
Benefits paid | (1,563) | (1,168) |
Settlements | 0 | 0 |
Other | 14 | 145 |
Obligation at end of year | 23,461 | 25,660 | 28,214
Defined Benefit Plan, Funded (Unfunded) Status of Plan | (23,461) | (25,660) |
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 |
Employer contributions | 1,435 | 905 |
Benefits paid | (1,563) | (1,168) |
Settlements | 0 | 0 |
Defined Benefit Plan, Other | 13 | 145 |
Fair value at end of year | 0 | 0 | 0
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract] |  |  |
Current liabilities | (1,352) | (1,308) |
Noncurrent liabilities | (22,108) | (24,352) |
Total liability recognized | (23,460) | (25,660) |
Unamortized actuarial loss, net | (2,267) | (574) |
Unamortized prior service cost | 0 | 0 |
Total | (2,267) | (574) |
Actuarial gains (losses) arising during the period | 1,720 | 2,652 |
Amortization of actuarial loss (gain) | 27 | (162) |
Amortization of prior service cost | 0 | 0 |
Total recognized in OCI | (1,693) | (2,814) |
Net periodic benefit cost and other losses | 928 | 1,165 | 1,482
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Income | (765) | (1,649) |
Net actuarial loss | 159 |  |
Prior service cost | 0 |  |
Total | (159) |  |
Qualified Pension Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant | 0 | 0 |
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant | 0 | 0 |
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] |  |  |
Obligation at beginning of year | 493,767 | 522,459 |
Service cost | 1,743 | 1,331 | 4,479
Interest cost | 19,463 | 19,889 | 20,926
Actuarial gain | (37,872) | (20,081) |
Benefits paid | (10,949) | (10,425) |
Settlements | (9,043) | (19,406) |
Other | 0 | 0 |
Obligation at end of year | 457,109 | 493,767 | 522,459
Defined Benefit Plan, Funded (Unfunded) Status of Plan | (982) | (33,058) |
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] |  |  |
Fair value at beginning of year | 460,709 | 438,402 |
Actual return on plan assets | 15,410 | 52,138 |
Employer contributions | 0 | 0 |
Benefits paid | (10,949) | (10,425) |
Settlements | (9,043) | (19,406) |
Defined Benefit Plan, Other | 0 | 0 |
Fair value at end of year | 456,127 | 460,709 | 438,402
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract] |  |  |
Current liabilities | 0 | 0 |
Noncurrent liabilities | (982) | (33,058) |
Total liability recognized | (982) | (33,058) |
Unamortized actuarial loss, net | 139,195 | 167,598 |
Unamortized prior service cost | 0 | 0 |
Total | 139,195 | 167,598 |
Actuarial gains (losses) arising during the period | 25,072 | 44,077 |
Amortization of actuarial loss (gain) | (3,331) | (4,455) |
Amortization of prior service cost | 0 | 0 |
Total recognized in OCI | (28,403) | (48,532) |
Net periodic benefit cost and other losses | (3,673) | (2,467) | $ 6,477
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Income | (32,076) | $ (50,999) |
Net actuarial loss | (2,754) |  |
Prior service cost | 0 |  |
Total | $ 2,754 |  |

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- Definition Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i-k) -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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- Definition Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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- Definition Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 + Details
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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(6) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 + Details
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- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition Amount of payment, which decreases plan assets of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(8) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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