Derivative Financial Instruments - Schedule of Notional Amounts of Outstanding Forward Contracts and Options (Parenthetical) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Sep. 30, 2025
Foreign Exchange Forward \| Euro / U.S. Dollar
Derivative [Line Items]
Notional amount	$ 755.1	$ 835.4
Foreign Exchange Forward \| Japanese Yen / U.S. Dollar
Derivative [Line Items]
Notional amount	31.3	41.9
Options \| Euro / U.S. Dollar
Derivative [Line Items]
Notional amount	279.3	367.4
Options \| Japanese Yen / U.S. Dollar
Derivative [Line Items]
Notional amount	$ 65.5	$ 89.4

Nominal or face amount used to calculate payment on derivative.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 181
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-181

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant