Restructuring and Other Charges - Schedule of Restructuring Reserve (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Dec. 31, 2020	Dec. 28, 2019	Sep. 30, 2020
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 9,987	$ 31,086	$ 31,086
Charges to operations, net	131	13,758
Cash disbursements	(3,420)	(931)
Foreign exchange impact	54	155
Restructuring reserve, ending balance	6,752	27,606	9,987
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	3,992	298	298
Charges to operations, net	160	13,631
Cash disbursements	(2,733)	(58)
Foreign exchange impact	42	156
Restructuring reserve, ending balance	1,461	14,027	3,992
Employee Severance and Related Benefits \| Accounting Standards Update 2016-02
Restructuring Reserve [Roll Forward]
ASC 842 adoption		0
Facility Closures
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	5,995	30,788	30,788
Charges to operations, net	(29)	127
Cash disbursements	(687)	(873)
Foreign exchange impact	12	(1)
Restructuring reserve, ending balance	$ 5,291	13,579	$ 5,995
Facility Closures \| 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 foreign currency translation gain (loss) which decreases (increases) the restructuring reserve.

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