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Defined Benefit Pension Plans - Allocation of Benefit Plan Assets (Details) - Pension Plan | Sep. 25, 2022 | Sep. 26, 2021
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Equity securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Policy Allocation, percentage | 25.00% |
Actual Allocation, percentage | 41.00% | 50.00%
Debt securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Policy Allocation, percentage | 65.00% |
Actual Allocation, percentage | 43.00% | 34.00%
TIPS |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Policy Allocation, percentage | 0.00% |
Actual Allocation, percentage | 0.00% | 4.00%
Hedge fund investments |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Policy Allocation, percentage | 10.00% |
Actual Allocation, percentage | 15.00% | 11.00%
Cash and cash equivalents |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Policy Allocation, percentage | 1.00% |
Actual Allocation, percentage | 1.00% | 1.00%

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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 https://asc.fasb.org/extlink&oid=123450688&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 https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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