Restructuring and Other Charges - Schedule of Restructuring Reserve (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 27, 2020	Jun. 27, 2020	Jun. 29, 2019
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance		$ 31,086	$ 2,415
Charges to operations, net	$ (200)	26,764	42,962
Cash disbursements		(25,636)	(21,406)
Other non-cash charges		164	4,812
Foreign exchange impact		168	(12)
Restructuring reserve, ending balance	16,084	16,084	28,771
Accounting Standards Update 2016-02
Restructuring Reserve [Roll Forward]
ASC 842 adoption		(16,462)
Employee Severance and Related Benefits
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance		298	0
Charges to operations, net		31,155	15,719
Cash disbursements		(21,890)	(15,397)
Other non-cash charges		0	0
Foreign exchange impact		165	6
Restructuring reserve, ending balance	9,728	9,728	328
Employee Severance and Related Benefits \| Accounting Standards Update 2016-02
Restructuring Reserve [Roll Forward]
ASC 842 adoption		0
Facility Closures and Related Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance		30,788	2,415
Charges to operations, net		(4,391)	27,243
Cash disbursements		(3,746)	(6,009)
Other non-cash charges		164	4,812
Foreign exchange impact		3	(18)
Restructuring reserve, ending balance	$ 6,356	6,356	$ 28,443
Facility Closures and Related Costs \| Accounting Standards Update 2016-02
Restructuring Reserve [Roll Forward]
ASC 842 adoption		$ (16,462)

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of decrease in the reserve for full or partial settlement through consideration other than cash.

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Amount of foreign currency translation gain (loss) which decreases (increases) the restructuring reserve.

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