Financial Instruments and Risk Management (Schedule of Fair Values of Derivative Instruments) (Details) - FX contract - USD ($) $ in Millions		Sep. 30, 2024	Sep. 30, 2023
Not designated as hedging instrument
Derivatives, Fair Value [Line Items]
Estimated fair value of derivatives	[1]	$ 0.1	$ 0.9
Cash flow hedging | Designated as hedging instrument
Derivatives, Fair Value [Line Items]
Estimated fair value of derivatives	[1]	$ (2.4)	$ 4.4

[1] All derivative assets are presented in Other current assets or Other assets. All derivative liabilities are presented in Other current liabilities or Other liabilities.