v3.22.4
Accumulated Other Comprehensive Loss (Schedule of Accumulated Other Comprehensive Loss) (Details) - USD ($)
$ in Millions
3 Months Ended
Dec. 31, 2022
Dec. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance $ (216.1) $ (136.9)
OCI before reclassifications [1] 42.7 (6.8)
Reclassifications to earnings (3.1) 0.3
Ending balance (176.5) (143.4)
Foreign Currency Translation Adjustments    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance (131.2) (41.8)
OCI before reclassifications [1] 48.0 (6.9)
Reclassifications to earnings 0.0 0.0
Ending balance (83.2) (48.7)
Pension and Post-retirement Activity    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance (92.6) (97.3)
OCI before reclassifications [1] (0.5) (1.1)
Reclassifications to earnings 0.3 1.1
Ending balance (92.8) (97.3)
Hedging Activity    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance 7.7 2.2
OCI before reclassifications [1] (4.8) 1.2
Reclassifications to earnings (3.4) (0.8)
Ending balance $ (0.5) $ 2.6
[1] OCI is defined as other comprehensive income (loss).