v3.24.1.u1
Shareholders' Equity (Reclassification out of Accumulated Other Comprehensive Income) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]    
Interest expense $ (9.0) $ (8.7)
Tax impact (20.3) (16.6)
Total (income), net of tax (59.9) (47.3)
Reclassification From Accumulated Other Comprehensive Loss [Member] | Derivative (Loss) Gain [Member]    
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]    
Tax impact 0.3 0.0
Total (income), net of tax (1.7) (1.9)
Reclassification From Accumulated Other Comprehensive Loss [Member] | Derivative (Loss) Gain [Member] | Interest Rate Swap Contracts, Before Tax [Member]    
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]    
Interest expense (2.1) (2.4)
Reclassification From Accumulated Other Comprehensive Loss [Member] | Prior Service Credit Amortization [Member]    
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]    
Other non-operating (income), net (0.1) 0.0
Reclassification From Accumulated Other Comprehensive Loss [Member] | Amortization of Net Actuarial Loss [Member]    
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]    
Other non-operating (income), net (0.8) (0.2)
Reclassification From Accumulated Other Comprehensive Loss [Member] | Pension And Postretirement Adjustments [Member]    
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]    
Tax impact 0.4 0.5
Total loss, before tax (0.9) (0.2)
Total loss, net of tax (0.6) (0.2)
Total reclassifications for the period $ (2.3) $ (2.1)