v3.26.3
Shareholders' Equity (Reclassification out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Interest expense $ (7.5) $ (8.2) $ (22.6) $ (25.3)
Tax impact (32.5) (23.2) (84.3) (72.3)
Derivative (Loss) Gain [Member]        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Total loss (income), net of tax [1],[2] 0.2 (0.1) 0.9 (0.4)
Pension And Postretirement Adjustments [Member]        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Total loss (income), net of tax [1] 0.7 0.6 2.0 1.9
Reclassification From Accumulated Other Comprehensive Loss [Member] | Derivative (Loss) Gain [Member]        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Tax impact (0.1) 0.0 (0.3) 0.1
Total loss (income), net of tax 0.2 (0.1) 0.9 (0.4)
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 0.3 (0.1) 1.2 (0.5)
Reclassification From Accumulated Other Comprehensive Loss [Member] | Amortization of Prior Service Credit [Member]        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Amortization of net actuarial loss 0.0 0.0 0.0 (0.1)
Reclassification From Accumulated Other Comprehensive Loss [Member] | Amortization of Net Actuarial Loss [Member]        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Amortization of net actuarial loss 0.8 0.9 2.6 2.8
Reclassification From Accumulated Other Comprehensive Loss [Member] | Pension And Postretirement Adjustments [Member]        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Tax impact (0.1) (0.3) (0.6) (0.8)
Total loss, before tax 0.8 0.9 2.6 2.7
Total loss, net of tax 0.7 0.6 2.0 1.9
Total reclassifications for the period $ 0.9 $ 0.5 $ 2.9 $ 1.5
[1] Amounts are net of tax.
[2] Amounts include our 50% share of AOCI components from our WAVE joint venture.