v3.26.1
Goodwill and Intangible Assets (Schedule of Amortizable Intangible Assets) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2024
Sep. 30, 2025
Finite-Lived Intangible Assets [Line Items]          
Amortizable intangible assets, gross carrying amount $ 579.8   $ 579.8   $ 583.8
Amortizable intangible assets, accumulated amortization 335.9   335.9   327.0
Amortizable intangible assets, net 243.9   243.9   256.8
Other intangible assets, net 813.4   813.4   828.2
Intangible Assets, Gross (Excluding Goodwill) 1,149.3   1,149.3   1,155.2
Amortization of intangibles 6.4 $ 6.4 12.8 $ 12.8  
Amortizable intangible assets, amortization expense, remainder of 2023 12.5   12.5    
Amortizable intangible assets, amortization expense, fiscal 2024 25.1   25.1    
Amortizable intangible assets, amortization expense, fiscal 2025 25.0   25.0    
Amortizable intangible assets, amortization expense, fiscal 2026 25.0   25.0    
Amortizable intangible assets, amortization expense, fiscal 2027 24.9   24.9    
Amortizable intangible assets, amortization expense, fiscal 2028 18.0   18.0    
Amortizable intangible assets, amortization expense, after fiscal 2028 113.4   113.4    
Indefinite-lived intangible assets 569.5   569.5   571.4
Trade names and brands          
Finite-Lived Intangible Assets [Line Items]          
Amortizable intangible assets, gross carrying amount 236.8   236.8   237.1
Amortizable intangible assets, accumulated amortization 82.4   82.4   77.4
Amortizable intangible assets, net 154.4   154.4   159.7
Technology and patents          
Finite-Lived Intangible Assets [Line Items]          
Amortizable intangible assets, gross carrying amount 77.0   77.0   80.2
Amortizable intangible assets, accumulated amortization 75.6   75.6   78.4
Amortizable intangible assets, net 1.4   1.4   1.8
Customer related and other          
Finite-Lived Intangible Assets [Line Items]          
Amortizable intangible assets, gross carrying amount 266.0   266.0   266.5
Amortizable intangible assets, accumulated amortization 177.9   177.9   171.2
Amortizable intangible assets, net $ 88.1   $ 88.1   $ 95.3