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Accumulated Other Comprehensive Loss (Schedule Of Accumulated Other Comprehensive Loss) - USD ($)
$ in Millions
 3 Months Ended
Dec. 31, 2022
Sep. 30, 2022
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]    
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax $ (35.7) $ (36.3)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax 0.6  
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax (4.3) (8.3)
Foreign currency translation 4.0  
Accumulated other comprehensive income (loss) (40.0) $ (44.6)
Other comprehensive income (loss), net of tax $ 4.6