v3.26.1
Pension Plans and Other Postretirement Benefits - Pension and Postretirement Plan Contributions (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Retirement Benefits [Abstract]    
Employer contributions $ 3.2 $ 5.2
Expected 2026 contributions $ 19.1