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POST-RETIREMENT BENEFIT PLANS - Change in Projected Benefit Obligation (Details) - Pension Plan - USD ($)
$ in Millions
 11 Months Ended 12 Months Ended
Sep. 30, 2025
Oct. 31, 2024
Oct. 31, 2023
Change in benefit obligation:      
Benefit obligation at beginning of year $ 654.1 $ 604.1  
Service cost 5.0 5.7 $ 6.8
Interest cost 28.4 34.9 35.0
Plan participant contributions 0.2 0.2  
Expenses paid from assets (2.9) (3.2)  
Actuarial (gain) loss (0.6) 52.8  
Foreign currency impact 9.1 8.5  
Benefits paid (48.8) (49.9)  
Discontinued operations 1.1 1.1  
Curtailments (11.2)    
Other   (0.1)  
Benefit obligation at end of year 634.4 654.1 604.1
United States      
Change in benefit obligation:      
Benefit obligation at beginning of year 469.9 437.5  
Service cost 3.8 4.2 5.3
Interest cost 21.8 26.7 26.8
Plan participant contributions 0.0 0.0  
Expenses paid from assets (1.9) (1.5)  
Actuarial (gain) loss 10.2 40.8  
Foreign currency impact 0.0 0.0  
Benefits paid (38.4) (38.9)  
Discontinued operations 1.1 1.1  
Curtailments (11.2)    
Other   0.0  
Benefit obligation at end of year 455.3 469.9 437.5
Foreign Plan      
Change in benefit obligation:      
Benefit obligation at beginning of year 184.2 166.6  
Service cost 1.2 1.5 1.5
Interest cost 6.6 8.2 8.2
Plan participant contributions 0.2 0.2  
Expenses paid from assets (1.0) (1.7)  
Actuarial (gain) loss (10.8) 12.0  
Foreign currency impact 9.1 8.5  
Benefits paid (10.4) (11.0)  
Discontinued operations 0.0 0.0  
Curtailments 0.0    
Other   (0.1)  
Benefit obligation at end of year $ 179.1 $ 184.2 $ 166.6