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Retirement Plans (Schedule of Plan Asset Allocation) (Details) | Sep. 27, 2020
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Defined Benefit Plan Disclosure [Line Items] |
Percentage of plan assets, equity securities | 100.00%
Asset allocation, target, equity securities | 100.00%
Cash & cash equivalents |
Defined Benefit Plan Disclosure [Line Items] |
Percentage of plan assets, equity securities | 1.00%
Asset allocation, target, equity securities | 0.00%
Domestic equities |
Defined Benefit Plan Disclosure [Line Items] |
Percentage of plan assets, equity securities | 23.00%
Asset allocation, target, equity securities | 23.00%
International equities |
Defined Benefit Plan Disclosure [Line Items] |
Percentage of plan assets, equity securities | 22.00%
Asset allocation, target, equity securities | 23.00%
Core fixed funds |
Defined Benefit Plan Disclosure [Line Items] |
Percentage of plan assets, equity securities | 33.00%
Asset allocation, target, equity securities | 32.00%
High yield |
Defined Benefit Plan Disclosure [Line Items] |
Percentage of plan assets, equity securities | 3.00%
Asset allocation, target, equity securities | 4.00%
Alternative investments |
Defined Benefit Plan Disclosure [Line Items] |
Percentage of plan assets, equity securities | 8.00%
Asset allocation, target, equity securities | 8.00%
Real estate |
Defined Benefit Plan Disclosure [Line Items] |
Percentage of plan assets, equity securities | 9.00%
Asset allocation, target, equity securities | 7.00%
Real return bonds |
Defined Benefit Plan Disclosure [Line Items] |
Percentage of plan assets, equity securities | 1.00%
Asset allocation, target, equity securities | 3.00%
Minimum | Cash & cash equivalents |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation, target, equity securities | 0.00%
Minimum | Domestic equities |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation, target, equity securities | 12.00%
Minimum | International equities |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation, target, equity securities | 12.00%
Minimum | Core fixed funds |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation, target, equity securities | 27.00%
Minimum | High yield |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation, target, equity securities | 0.00%
Minimum | Alternative investments |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation, target, equity securities | 0.00%
Minimum | Real estate |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation, target, equity securities | 2.00%
Minimum | Real return bonds |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation, target, equity securities | 0.00%
Maximum | Cash & cash equivalents |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation, target, equity securities | 0.00%
Maximum | Domestic equities |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation, target, equity securities | 32.00%
Maximum | International equities |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation, target, equity securities | 32.00%
Maximum | Core fixed funds |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation, target, equity securities | 37.00%
Maximum | High yield |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation, target, equity securities | 8.00%
Maximum | Alternative investments |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation, target, equity securities | 16.00%
Maximum | Real estate |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation, target, equity securities | 12.00%
Maximum | Real return bonds |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocation, target, equity securities | 8.00%

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- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: 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=118257860&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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