COVID-19 Incremental Costs

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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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Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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Quarterly Financial Information - Unaudited - Narrative (Details) - USD ($)		3 Months Ended					12 Months Ended
	Jun. 28, 2021	Oct. 03, 2021	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Dec. 29, 2019	Oct. 03, 2021	Sep. 27, 2020	Sep. 29, 2019
Business Acquisition [Line Items]
COVID-19 incremental costs					$ 8,200,000
Impairment of goodwill	$ 0		$ 15,800,000				$ 0	$ 15,800,000	$ 7,755,000
Gain on sale of property and equipment			1,000,000	$ 4,500,000	$ 2,200,000	$ 800,000
Contingent consideration
Business Acquisition [Line Items]
Net gains in earnings for adjustments on contingent earn-out liabilities			$ 13,500,000
Foreign
Business Acquisition [Line Items]
Tax benefit primarily consisting of valuation allowances		$ 21,600,000					$ 21,600,000	$ 22,300,000