Restructuring and Other Charges (Credits), Net - Schedule of Restructuring Accrual Activity (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 935	$ 5,486	$ 9,987
Charges (credits) to operations, net	(424)	32,410	2,136
Cash disbursements	(425)	(40,800)	(6,681)
Foreign exchange impact	21	(583)	44
Restructuring reserve, ending balance	107	935	5,486
Employee Severance and Related Benefits
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	346	1,981	3,992
Charges (credits) to operations, net	(143)	32,971	1,887
Cash disbursements	(121)	(34,023)	(3,925)
Foreign exchange impact	21	(583)	27
Restructuring reserve, ending balance	103	346	1,981
Facility Closures
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	589	3,505	5,995
Charges (credits) to operations, net	(281)	(561)	249
Cash disbursements	(304)	(2,355)	(2,756)
Foreign exchange impact	0	0	17
Restructuring reserve, ending balance	$ 4	589	$ 3,505
PTC Restructuring Plan 2022
Restructuring Reserve [Roll Forward]
Cash disbursements		$ (36,378)

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of foreign currency translation gain (loss) which decreases (increases) the restructuring reserve.

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