v3.24.3
Pension and Other Postretirement Benefits - Narrative (Details) - Pension Plan - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Pension Benefits      
Pension contributions   $ 9.7 $ 7.7
Expected future employer contributions   $ 13.0  
Gain on liability adjustment $ 2.3