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Third Party Arrangements and Related Party Disclosures (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Sep. 30, 2024
Related Party Transaction [Line Items]    
Amounts due from Becton, Dickinson and Company $ 10.1 $ 53.8
Amounts due to Becton, Dickinson and Company 19.5 $ 42.5
Becton, Dickinson and Company | Amounts due from Becton, Dickinson and Company    
Related Party Transaction [Line Items]    
Amounts due from Becton, Dickinson and Company 10.1  
Becton, Dickinson and Company | Trade receivables    
Related Party Transaction [Line Items]    
Amounts due from Becton, Dickinson and Company 9.2  
Becton, Dickinson and Company | Amounts due to Becton, Dickinson and Company    
Related Party Transaction [Line Items]    
Amounts due to Becton, Dickinson and Company 19.5  
Becton, Dickinson and Company | Accounts payable    
Related Party Transaction [Line Items]    
Amounts due to Becton, Dickinson and Company $ 3.5