Derivative Financial Instruments - Schedule of Derivative Instruments and Hedging Activities Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Derivative Instruments Gain Loss [Line Items]
Derivative, Excluded Component, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Nonoperating Income Expense	Nonoperating Income Expense	Nonoperating Income Expense	Nonoperating Income Expense
Foreign Exchange Forward Contract and Options \| Not Designated as Hedging Instrument \| Other income (expense), net
Derivative Instruments Gain Loss [Line Items]
Net realized and unrealized (gain) loss, excluding the underlying foreign currency exposure being hedged	$ (1,422)	$ 3,797	$ (12,431)	$ 362
Gain (loss) recognized in OCI	(1,422)	3,797	(12,431)	362
Forward Contracts \| Designated as Hedging Instrument \| Net Investment Hedging
Derivative Instruments Gain Loss [Line Items]
Net realized and unrealized (gain) loss, excluding the underlying foreign currency exposure being hedged	(915)	81	(5,425)	(3,075)
Gain (loss) recognized in OCI	(915)	81	(5,425)	(3,075)
Gain (loss) reclassified from OCI	(1,996)	(1,415)	5,034	(7,150)
Gain recognized, excluded portion	$ 1,179	$ 342	$ 2,148	$ 609

Amount of gain (loss) from excluded component of derivative hedge, recognized in earnings. Excludes recognition under systematic and rational method.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 20
-Section 45
-Paragraph 1A
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=121577181&loc=SL110061172-113977

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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Indicates line item in statement of income or comprehensive income that includes gain (loss) recognized in earnings from excluded component of derivative hedge.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 4C
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-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount, before tax, of reclassification from accumulated other comprehensive income (AOCI) for gain (loss) from derivative designated and qualifying as net investment hedge.

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