v3.25.4
Restructuring, Reserve (Details) - Project Momentum Restructuring - USD ($)
$ in Millions
 3 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Restructuring Reserve [Roll Forward]    
Restructuring reserve, beginning balance $ 8.7 $ 21.7
Charge to Income 30.9 20.3
Cash 20.7 25.2
Non-Cash 3.9 1.8
Restructuring reserve, ending balance 15.0 15.0
Severance & termination related costs    
Restructuring Reserve [Roll Forward]    
Restructuring reserve, beginning balance 7.5 7.2
Charge to Income 16.7 1.4
Cash 10.0 2.8
Non-Cash 0.0 0.0
Restructuring reserve, ending balance 14.2 5.8
Accelerated depreciation & fixed asset write-offs    
Restructuring Reserve [Roll Forward]    
Restructuring reserve, beginning balance 0.0 0.0
Charge to Income 2.7 1.7
Cash 0.0 0.0
Non-Cash 2.7 1.7
Restructuring reserve, ending balance 0.0 0.0
Other restructuring related costs    
Restructuring Reserve [Roll Forward]    
Restructuring reserve, beginning balance 0.9 12.4
Charge to Income 5.4 11.1
Cash 5.5 16.3
Non-Cash   0.0
Non-cash, net of adjustments 0.0  
Restructuring reserve, ending balance 0.8 7.2
US Manufacturing Efficiency Initiatives    
Restructuring Reserve [Roll Forward]    
Restructuring reserve, beginning balance 0.0  
Charge to Income 6.1  
Cash 4.9  
Non-cash, net of adjustments 1.2  
Restructuring reserve, ending balance 0.0  
IT enablement    
Restructuring Reserve [Roll Forward]    
Restructuring reserve, beginning balance 0.3 2.1
Charge to Income 0.0 6.1
Cash 0.3 6.1
Non-Cash 0.0 0.1
Restructuring reserve, ending balance $ 0.0 $ 2.0