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Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
 3 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Changes in Accumulated Other Comprehensive Loss [Abstract]    
Beginning balance $ 747.6  
Other comprehensive income (loss) before reclassifications (6.9) $ (1.0)
Income taxes (0.3) 0.0
Total other comprehensive income (loss) (6.1) (0.5)
Ending balance 788.4  
Accumulated Other Comprehensive Loss [Member]    
Changes in Accumulated Other Comprehensive Loss [Abstract]    
Beginning balance (163.4) (161.1)
Ending balance (169.5) (161.6)
Foreign Currency Translation [Member]    
Changes in Accumulated Other Comprehensive Loss [Abstract]    
Beginning balance (62.8) (57.5)
Other comprehensive income (loss) before reclassifications (6.9) (0.6)
Income taxes 0.0 0.0
Total other comprehensive income (loss) (6.9) (0.6)
Ending balance (69.7) (58.1)
Defined Benefit Plans [Member]    
Changes in Accumulated Other Comprehensive Loss [Abstract]    
Beginning balance (100.7) (104.4)
Other comprehensive income (loss) before reclassifications 0.0 0.0
Reclassification from accumulated other comprehensive income (loss) [1] 1.1 1.0
Income taxes (0.3) (0.2)
Total other comprehensive income (loss) 0.8 0.8
Ending balance (99.9) (103.6)
Cash Flow Hedges [Member]    
Changes in Accumulated Other Comprehensive Loss [Abstract]    
Beginning balance 0.1 0.8
Other comprehensive income (loss) before reclassifications 0.0 (0.4)
Reclassification from accumulated other comprehensive income (loss) [2]   (0.5)
Income taxes 0.0 0.2
Total other comprehensive income (loss) 0.0 (0.7)
Ending balance $ 0.1 $ 0.1
[1] Amounts are included in the calculation of net periodic benefit cost for the Company’s defined benefit plans, which include pension and other postretirement plans.  See Note 5 for additional information about the Company’s pension plans.
[2] Amounts represent net gains and losses associated with cash flow hedges that were reclassified to net earnings.