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Derivative Financial Instruments and Hedging (Details) - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2022
Derivatives, Fair Value      
Asset Derivatives: $ 5.3 $ 25.6  
Liability Derivatives: 14.8 16.1  
Commodity and energy contracts | Prepaid expenses and other current assets      
Derivatives, Fair Value      
Asset Derivatives: 4.2 3.7  
Commodity and energy contracts | Other current liabilities      
Derivatives, Fair Value      
Liability Derivatives: 6.5 16.1  
Commodity and energy contracts | Not Designated as Hedging Instrument      
Derivatives, Fair Value      
Derivative, Notional Amount 111.8 263.9  
Foreign exchange contracts | Prepaid expenses and other current assets      
Derivatives, Fair Value      
Asset Derivatives: 0.1 0.0  
Foreign exchange contracts | Other current liabilities      
Derivatives, Fair Value      
Liability Derivatives: 0.9 0.0  
Foreign exchange contracts | Not Designated as Hedging Instrument      
Derivatives, Fair Value      
Derivative, Notional Amount 40.5 3.0  
Interest rate swap | Prepaid expenses and other current assets      
Derivatives, Fair Value      
Asset Derivatives: 1.0 10.6  
Interest rate swap | Other Assets      
Derivatives, Fair Value      
Asset Derivatives: 0.0 11.3  
Interest rate swap | Other current liabilities      
Derivatives, Fair Value      
Liability Derivatives: 0.4 0.0  
Interest rate swap | Other liabilities      
Derivatives, Fair Value      
Liability Derivatives: 7.0 0.0  
Interest rate swap | Not Designated as Hedging Instrument      
Derivatives, Fair Value      
Derivative, Notional Amount 300.0 700.0  
Derivative, Notional amount of terminated contracts 400.0 200.0  
Derivative, Cash Received for Termination $ 5.2 6.7  
Interest rate swap, rate lock swaps | Not Designated as Hedging Instrument      
Derivatives, Fair Value      
Derivative, Notional amount of terminated contracts   849.3 $ 700.0
Interest rate swap, options | Not Designated as Hedging Instrument      
Derivatives, Fair Value      
Derivative, Notional amount of terminated contracts   $ 332.6