v3.26.1
Financial Instruments and Risk Management (Schedule of Fair Values of Derivative Instruments) (Details) - FX contract - USD ($)
$ in Millions
Jun. 30, 2026
Sep. 30, 2025
Not designated as hedging instrument    
Derivatives, Fair Value [Line Items]    
Estimated fair value of derivatives [1] $ 0.1 $ 0.1
Cash flow hedging | Designated as hedging instrument    
Derivatives, Fair Value [Line Items]    
Estimated fair value of derivatives [1] $ 4.1 $ (1.4)
[1] erivative assets are presented in Other current assets or Other assets. Derivative liabilities are presented in Other current liabilities or Other liabilities.