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	Mar. 31, 2024	Sep. 30, 2023
Derivative [Line Items]
Notional amount	$ 498,070	$ 523,636
Canadian / U.S. Dollar
Derivative [Line Items]
Notional amount	1,985	5,135
Euro / U.S. Dollar
Derivative [Line Items]
Notional amount	391,383	383,227
British Pound / U.S. Dollar
Derivative [Line Items]
Notional amount	9,511	6,058
Israeli Shekel / U.S. Dollar
Derivative [Line Items]
Notional amount	13,732	11,852
JPY/ U.S Dollar
Derivative [Line Items]
Notional amount	12,413	4,770
Swiss Franc / U.S. Dollar
Derivative [Line Items]
Notional amount	22,749	32,766
Swedish Krona / U.S. Dollar
Derivative [Line Items]
Notional amount	15,165	35,085
Chinese Renminbi / U.S. Dollar
Derivative [Line Items]
Notional amount	4,711	16,660
New Taiwan Dollar / U.S. Dollar
Derivative [Line Items]
Notional amount	10,843	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	5,468	6,731
Australian Dollar/ U.S. Dollar
Derivative [Line Items]
Notional amount	3,588	452
Hong Kong Dollar/U.S Dollar
Derivative [Line Items]
Notional amount	3,604	449
All other
Derivative [Line Items]
Notional amount	$ 2,918	$ 2,439