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Commitment and Contingencies - Additional Information (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Sep. 30, 2023
Commitments And Contingencies [Line Items]    
Reserve for unpaid and incurred but not reported claims, amount $ 165.6 $ 159.9
Reserve for unpaid and incurred but not reported claims, classified in current liabilities 52.8 54.8
Reserve for unpaid and incurred but not reported claims, classified in non-current liabilities 112.8 105.1
Claims recoverable from third party insurance carriers 13.4 18.1
Other Current Assets    
Commitments And Contingencies [Line Items]    
Claims recoverable from third party insurance carriers 4.0 5.3
Other Assets    
Commitments And Contingencies [Line Items]    
Claims recoverable from third party insurance carriers $ 9.4 $ 12.8