v3.25.2
Restructuring (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Restructuring Cost and Reserve [Line Items]        
Total restructuring and related costs $ 8.0 $ 18.8 $ 45.9 $ 64.6
Net sales 725.3 701.4 2,119.9 2,081.3
Selling, general and administrate expense | IT enablement        
Restructuring Cost and Reserve [Line Items]        
Total restructuring and related costs 1.7 2.8 13.2 10.0
Project Momentum Restructuring        
Restructuring Cost and Reserve [Line Items]        
Total restructuring and related costs 6.3 16.0 32.7 54.6
Project Momentum Restructuring | Costs of products sold        
Restructuring Cost and Reserve [Line Items]        
Severance and related benefit costs 0.1 1.0 0.3 1.9
Accelerated depreciation & fixed asset write-offs 0.0 1.3 3.3 6.0
Other restructuring related costs 2.8 11.1 17.4 33.8
Project Momentum Restructuring | Selling, general and administrate expense        
Restructuring Cost and Reserve [Line Items]        
Severance and related benefit costs 1.6 0.5 3.7 3.3
Accelerated depreciation & fixed asset write-offs 0.0 0.5 0.9 1.5
Other restructuring related costs 1.8 6.0 7.4 12.5
Project Momentum Restructuring | Other Nonoperating Income (Expense)        
Restructuring Cost and Reserve [Line Items]        
Other restructuring related costs 0.0 (0.7) (0.3) (0.7)
Gain on Sale of Assets $ 0.0 $ (3.7) $ 0.0 $ (3.7)