XML 231 R80.htm IDEA: XBRL DOCUMENT v3.25.0.1
Pension and Other Postretirement Benefits - Funded status of plans (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Pension    
Defined Benefit Plan Disclosure [Line Items]    
Funded status $ (57.2) $ (48.3)
Current liabilities (1.8) (1.8)
Non-current liabilities (55.4) (46.5)
Net amount recognized (57.2) (48.3)
Net loss 82.3 82.1
Prior service cost (benefit) 1.6 1.8
Total 83.9 83.9
Projected benefit obligation for plans with accumulated benefit obligations in excess of plan assets 302.3 305.1
Accumulated benefit obligation for plans with accumulated benefit obligations in excess of plan assets 279.3 305.9
Fair value of plan assets for plans with accumulated benefit obligations in excess of plan assets 245.1 256.8
OPEB    
Defined Benefit Plan Disclosure [Line Items]    
Funded status (75.7) (76.8)
Current liabilities (6.5) (6.5)
Non-current liabilities (69.2) (70.3)
Net amount recognized (75.7) (76.8)
Net loss 14.4 14.8
Prior service cost (benefit) 0.0 0.0
Total $ 14.4 $ 14.8