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Joint Ventures and VIE's (Narrative) (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 31, 2019 | Sep. 27, 2019 | Sep. 28, 2018 | Sep. 29, 2017
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] |  |  |  |
Equity method investments exceeds its share of venture net assets |  | $ 71,800 |  |
Proceeds from sale of equity method investments |  | 64,708 | $ 0 | $ 0
Income (Loss) from equity method investments |  | 8,784 | 2,639 | 7,788
Unconsolidated Joint Venture |  |  |  |
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] |  |  |  |
Income from equity method joint ventures |  | 45,200 | 28,400 | 700
Unconsolidated Joint Venture | VIE not primary beneficiary, aggregate disclosure |  |  |  |
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] |  |  |  |
VIE unconsolidated assets |  | 61,100 | 85,100 |
VIE unconsolidated liabilities |  | 63,700 | 75,900 |
Income from equity method joint ventures |  | 227,000 | 221,100 | 130,300
Accounts receivable from unconsolidated joint venture |  | 19,500 | 11,100 |
Unconsolidated Joint Venture | VIE, primary beneficiary |  |  |  |
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] |  |  |  |
VIE unconsolidated assets |  | 157,900 | 150,100 |
Income from equity method joint ventures |  | $ 48,500 | $ 47,900 | $ 38,100
Jasara |  |  |  |
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] |  |  |  |
Ownership percentage | 10.00% |  |  |
Proceeds from sale of equity method investments | $ 1,200 |  |  |
Income (Loss) from equity method investments | $ 400 |  |  |

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- Definition Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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