Financial Instruments and Risk Management (Schedule of Fair Values of Derivative Instruments) (Details) - FX contract - USD ($) $ in Millions		Jun. 30, 2023	Sep. 30, 2022
Not designated as hedge
Derivatives, Fair Value [Line Items]
Estimated fair value of derivatives	[1]	$ 1.5	$ 2.0
Cash flow hedge | Designated as hedge
Derivatives, Fair Value [Line Items]
Estimated fair value of derivatives	[1]	$ 2.4	$ 11.3

[1] erivative assets are presented in Other current assets or Other assets. Derivative liabilities are presented in Other current liabilities or Other liabilities.