Restructuring and Other Charges - Schedule of Restructuring Reserve (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Restructuring Reserve [Roll Forward]
Accrual, beginning balance			$ 5,486	$ 9,987
Charges to operations, net	$ (1,100)	$ 200	33,051	362
Cash disbursements	(17,300)		(27,080)	(5,421)
Foreign exchange impact			(354)	45
Accrual, ending balance	11,103	4,973	11,103	4,973
Employee Severance and Related Benefits
Restructuring Reserve [Roll Forward]
Accrual, beginning balance			1,981	3,992
Charges to operations, net			33,428	163
Cash disbursements			(25,744)	(3,924)
Foreign exchange impact			(354)	31
Accrual, ending balance	9,311	262	9,311	262
Facility Closures and Related Costs
Restructuring Reserve [Roll Forward]
Accrual, beginning balance			3,505	5,995
Charges to operations, net			(377)	199
Cash disbursements			(1,336)	(1,497)
Foreign exchange impact			0	14
Accrual, ending balance	$ 1,792	$ 4,711	$ 1,792	$ 4,711

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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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.

+ References

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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