Benefit Plans and Other Postretirement Benefits, Pension plans with a projected benefit obligation in excess of plan assets (Details) - Pension Benefits - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
United States
Pension Plan with Projected Benefit Obligation in Excess of Plan Assets [Abstract]
Projected benefit obligation	$ 22.1	$ 23.2
Fair value of plan assets	8.6	9.1
Foreign Plans
Pension Plan with Projected Benefit Obligation in Excess of Plan Assets [Abstract]
Projected benefit obligation	90.0	169.3
Fair value of plan assets	$ 17.7	$ 81.2