v3.25.1
Restructuring Charges (Schedule of Restructuring Activities and Related Accruals) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2025
Mar. 31, 2024
Restructuring Reserve [Roll Forward]        
Restructuring and related costs $ 12.2 $ 3.2 $ 16.4 $ 10.0
Ending Balance 18.2   18.2  
Employee Severance [Member]        
Restructuring Reserve [Roll Forward]        
Beginning Balance     20.7  
Utilized - Cash Payments     (2.3)  
Utilized - Non-Cash     (1.8)  
Ending Balance 16.6   16.6  
Other Restructuring [Member]        
Restructuring Reserve [Roll Forward]        
Beginning Balance     0.7  
Utilized - Cash Payments     (11.6)  
Utilized - Non-Cash     (2.2)  
Ending Balance $ 1.6   1.6  
Asset Impairment and Accelerated Depreciation [Member]        
Restructuring Reserve [Roll Forward]        
Utilized - Non-Cash     $ (1.7)