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Derivative Financial Instruments - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2025 | Mar. 31, 2024
Derivative [Line Items] |  |  |  |
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, net | $ 0.1 | $ (1.1) | $ (1.1) | $ (0.1)
Maximum | Forward contracts | Not Designated as Hedging Instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative, remaining maturity | 3 months |  | 3 months |
Maximum | Forward contracts | Designated as Hedging Instrument | Net Investment Hedging |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative, remaining maturity | 3 months |  | 3 months |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480237/815-40-50-5 + Details
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- Definition Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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