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Derivative Financial Instruments - Schedule of Notional Amounts of Outstanding Forward Contracts and Options (Details) - Not Designated as Hedging Instrument - Foreign Exchange Forward Contract and Options - USD ($) $ in Thousands | Jun. 30, 2025 | Sep. 30, 2024
--- | --- | ---
Derivative [Line Items] |  |
Notional amount | $ 901,916 | $ 1,058,478
Euro / U.S. Dollar |  |
Derivative [Line Items] |  |
Notional amount | 768,217 | 781,398
British Pound / U.S. Dollar |  |
Derivative [Line Items] |  |
Notional amount | 16,152 | 24,810
Israeli Shekel / U.S. Dollar |  |
Derivative [Line Items] |  |
Notional amount | 12,119 | 12,535
Indian Rupee / U.S. Dollar |  |
Derivative [Line Items] |  |
Notional amount | 54,321 | 0
Japanese Yen / U.S. Dollar |  |
Derivative [Line Items] |  |
Notional amount | 0 | 42,340
Swiss Franc / U.S. Dollar |  |
Derivative [Line Items] |  |
Notional amount | 20,632 | 74,939
Swedish Krona / U.S. Dollar |  |
Derivative [Line Items] |  |
Notional amount | 13,639 | 48,596
Chinese Renminbi / U.S. Dollar |  |
Derivative [Line Items] |  |
Notional amount | 3,782 | 32,124
New Taiwan Dollar / U.S. Dollar |  |
Derivative [Line Items] |  |
Notional amount | 1,364 | 16,368
All other |  |
Derivative [Line Items] |  |
Notional amount | $ 11,690 | $ 25,368

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