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Commitments And Contingencies (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Sep. 30, 2022
Sep. 30, 2022
Sep. 29, 2023
Loss Contingencies [Line Items]      
Capital and other purchase commitments     $ 840.8
Letters of credit outstanding     $ 85.5
Cost of services provided (exclusive of depreciation and amortization) | Pending Litigation      
Loss Contingencies [Line Items]      
Reversal of previously reserved amounts $ 13.6 $ 5.7