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	Dec. 31, 2023	Sep. 30, 2023
Derivative [Line Items]
Notional amount	$ 514,009	$ 523,636
Canadian / U.S. Dollar
Derivative [Line Items]
Notional amount	2,547	5,135
Euro / U.S. Dollar
Derivative [Line Items]
Notional amount	437,668	383,227
British Pound / U.S. Dollar
Derivative [Line Items]
Notional amount	5,359	6,058
Israeli Shekel / U.S. Dollar
Derivative [Line Items]
Notional amount	9,264	11,852
JPY/ U.S Dollar
Derivative [Line Items]
Notional amount	0	4,770
Swiss Franc / U.S. Dollar
Derivative [Line Items]
Notional amount	11,303	32,766
Swedish Krona / U.S. Dollar
Derivative [Line Items]
Notional amount	14,229	35,085
Chinese Renminbi / U.S. Dollar
Derivative [Line Items]
Notional amount	5,180	16,660
New Taiwan Dollar / U.S. Dollar
Derivative [Line Items]
Notional amount	18,492	11,855
Korea Won/ U.S. Dollar
Derivative [Line Items]
Notional amount	0	6,157
Danish krone/ U.S. Dollar
Derivative [Line Items]
Notional amount	5,358	6,731
All other
Derivative [Line Items]
Notional amount	$ 4,609	$ 3,340