Original amount of cost-method investments at the acquisition date.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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Investments - Other Investments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 03, 2020	Mar. 29, 2019	Apr. 03, 2020	Mar. 29, 2019	Sep. 27, 2019
Equity Securities without Readily Determinable Fair Value [Line Items]
Income (Loss) from Equity Method Investments			$ (9,066)	$ (8,971)
Equity Securities \| Compute
Equity Securities without Readily Determinable Fair Value [Line Items]
Equity Method Investments	$ 9,500		9,500		$ 18,600
Income (Loss) from Equity Method Investments	(5,300)	$ (4,400)	(9,100)	$ (9,000)
Preferred Stock \| Privately Held Manufacturing Company
Equity Securities without Readily Determinable Fair Value [Line Items]
Investment cost basis	$ 5,000		5,000
Other than Temporary Impairment Losses, Investments			$ 0
Compute \| Equity Securities
Equity Securities without Readily Determinable Fair Value [Line Items]
Noncontrolling interest ownership percentage	20.00%		20.00%