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Joint Ventures and VIE's (Narrative) (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 28, 2018 | Dec. 30, 2016 | Sep. 28, 2018 | Sep. 29, 2017 | Sep. 30, 2016
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] |  |  |  |  |
Gain (Loss) on disposal of business and investments |  |  | $ (20,967) | $ 10,058 | $ (41,410)
Currency translation losses |  | $ (140,500) | 109,877 | 140,527 | 46,515
Consolidated Joint Venture | VIE Primary beneficiary, aggregate disclosure |  |  |  |  |
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] |  |  |  |  |
VIE consolidated assets | $ 199,900 |  | 199,900 | 9,600 |
VIE consolidated liabilities | 125,600 |  | 125,600 | 8,300 |
Unconsolidated Joint Venture | VIE not primary beneficiary, aggregate disclosure |  |  |  |  |
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] |  |  |  |  |
VIE unconsolidated assets | 88,600 |  | 88,600 | 50,300 |
VIE unconsolidated liabilities | 79,300 |  | 79,300 | 44,100 |
Equity method investment exceeds carrying amount of share of net assets | 82,800 |  | 82,800 |  |
Income from equity method joint ventures |  |  | 233,200 | 140,000 | 136,500
Accounts receivable from unconsolidated joint venture | 13,000 |  | 13,000 | 6,300 |
Unconsolidated Joint Venture | VIE, primary beneficiary |  |  |  |  |
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] |  |  |  |  |
VIE unconsolidated assets | $ 219,100 |  | 219,100 | 131,400 |
Income from equity method joint ventures |  |  | $ 55,400 | $ 44,700 | $ 51,100
Guimar Joint Venture |  |  |  |  |
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] |  |  |  |  |
Ownership interest divested | 45.00% |  | 45.00% |  |
Currency translation losses | $ 9,000 |  |  |  |

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