v3.26.1
Pension and Postretirement Benefits (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Pension Benefits    
Components of net periodic benefit cost    
Service costs $ 1.3 $ 1.0
Interest costs 0.9 0.9
Expected return on plan assets (3.1) (2.8)
Recognized net actuarial loss 0.1 0.1
Net periodic benefit (income) expense (0.8) (0.8)
Postretirement Benefits    
Components of net periodic benefit cost    
Service costs 0.0 0.0
Interest costs 0.0 0.0
Expected return on plan assets 0.0 0.0
Recognized net actuarial loss 0.0 0.0
Net periodic benefit (income) expense $ 0.0 $ 0.0