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Acquisitions and Investments in Joint Ventures - Investments and Equity Method Investments, Additional Information (Details) $ in Thousands | 12 Months Ended
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Sep. 26, 2020 USD ($) venture | Sep. 28, 2019 USD ($) venture | Sep. 29, 2018 USD ($) venture
Schedule of Equity Method Investments [Line Items] |  |  |
Investments | $ 4,400 | $ 2,000 |
Number of ventures | venture | 2 | 2 | 3
Investments in business | $ 4,439 | $ 2,010 | $ 9,048
Minimum |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Percent interest in ventures | 3.00% |  | 13.00%
Maximum |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Percent interest in ventures | 30.00% | 7.00% | 20.00%

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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition Sum of the carrying amounts as of the balance sheet date of all investments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(h)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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- Definition The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585 + Details
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