v3.22.4
Financial Instruments and Risk Management (Narrative) (Details)
$ in Millions
3 Months Ended
Dec. 31, 2022
USD ($)
contracts
Dec. 31, 2021
USD ($)
Sep. 30, 2022
USD ($)
Derivative [Line Items]      
Long-term debt $ 1,505.0   $ 1,405.0
Fixed rate      
Derivative [Line Items]      
Long-term debt 1,250.0   1,250.0
Fair value of long-term debt $ 1,001.0   945.9
Not designated as hedge | FX contract      
Derivative [Line Items]      
Open foreign currency contracts | contracts 7    
Derivative, notional amount $ 65.9    
Gain (loss) recognized in income [1] (2.7) $ 1.1  
Cash flow hedge | Designated as hedge | FX contract      
Derivative [Line Items]      
Estimated fair value of derivative $ (0.7)   $ 11.3
Open foreign currency contracts | contracts 64    
Derivative, notional amount $ 105.4    
[1] Gain (loss) was recorded in Other income, net.