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Employee Benefit Plans - Percentage Allocation of Plan Assets (Details) - United States [Member] | Sep. 26, 2020 | Sep. 28, 2019
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Actual allocation of assets held in trust [Abstract] |  |
Percentage allocation of plan assets | 100.00% | 100.00%
Fixed income securities [Member] |  |
Actual allocation of assets held in trust [Abstract] |  |
Percentage allocation of plan assets | 86.00% | 86.00%
Equity securities [Member] |  |
Actual allocation of assets held in trust [Abstract] |  |
Percentage allocation of plan assets | 14.00% | 14.00%

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- Definition Percentage of actual 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/2009/role/commonPracticeRef -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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