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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, 2026 | Sep. 30, 2025
--- | --- | ---
Derivative [Line Items] |  |  |
Notional amount |  | $ 941,440 | $ 1,518,086
Euro / U.S. Dollar |  |  |
Derivative [Line Items] |  |  |
Notional amount | [1] | 762,849 | 1,202,830
British Pound / U.S. Dollar |  |  |
Derivative [Line Items] |  |  |
Notional amount |  | 4,727 | 22,974
Israeli Shekel / U.S. Dollar |  |  |
Derivative [Line Items] |  |  |
Notional amount |  | 19,456 | 20,094
Indian Rupee / U.S. Dollar |  |  |
Derivative [Line Items] |  |  |
Notional amount |  | 74,490 | 53,465
Japanese Yen / U.S. Dollar |  |  |
Derivative [Line Items] |  |  |
Notional amount | [2] | 12,971 | 131,284
Swiss Franc / U.S. Dollar |  |  |
Derivative [Line Items] |  |  |
Notional amount |  | 14,835 | 8,960
Swedish Krona / U.S. Dollar |  |  |
Derivative [Line Items] |  |  |
Notional amount |  | 18,770 | 21,568
New Taiwan Dollar / U.S. Dollar |  |  |
Derivative [Line Items] |  |  |
Notional amount |  | 14,404 | 23,098
All other |  |  |
Derivative [Line Items] |  |  |
Notional amount |  | $ 18,938 | $ 33,813
[1] | As of June 30, 2026, $687.2 million of the Euro to U.S. Dollar outstanding notional amount relates to forward contracts and $75.6 million relates to option contracts. As of September 30, 2025, $835.4 million of the Euro to U.S. Dollar outstanding notional amount relates to forward contracts and $367.4 million relates to option contracts.
[2] | As of June 30, 2026, $1.4 million of the Japanese Yen to U.S. Dollar outstanding notional amount relates to forward contracts and $11.6 million relates to option contracts. As of September 30, 2025, $41.9 million of the Japanese Yen to U.S. Dollar outstanding notional amo unt relates to forward contracts and $89.4 million relates to option contracts.

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