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Derivatives - Fair Value of Derivative Financial Instruments (Details) - USD ($)
$ in Millions
Mar. 30, 2024
Sep. 30, 2023
Interest rate swap    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Cash Flow Hedge Derivative Instrument Assets at Fair Value $ 0.0  
Derivative instruments designated as a cash flow hedge | Interest rate swap    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Derivative Asset, Subject to Master Netting Arrangement, before Offset 14.2 $ 26.9
Derivative instruments designated as a cash flow hedge | Interest rate swap | Prepaid expenses and other current assets    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Cash Flow Hedge Derivative Instrument Assets at Fair Value 7.9 16.2
Derivative instruments designated as a cash flow hedge | Interest rate swap | Other assets    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Cash Flow Hedge Derivative Instrument Assets at Fair Value 6.3 10.7
Derivatives not designated as hedging instruments    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Derivative Asset, Subject to Master Netting Arrangement, before Offset 2.9 8.4
Derivatives not designated as hedging instruments | Forward foreign currency contracts | Prepaid expenses and other current assets    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Cash Flow Hedge Derivative Instrument Assets at Fair Value 2.9 8.4
Derivatives not designated as hedging instruments | Forward foreign currency contracts | Accrued expenses    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Cash Flow Hedge Derivative Instrument Assets at Fair Value $ 0.2 $ 0.0