XML 80 R65.htm IDEA: XBRL DOCUMENT v3.25.0.1
Pension and Other Post-retirement Benefits Net Periodic Pension Costs and Weighted Average Assumptions (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]      
Interest cost $ 29.8 $ 31.2 $ 22.4
Expected return on plan assets (31.6) (31.4) (38.3)
Settlement gain recognized (1) 0.0 0.0 (0.4)
Amortization of net gain (0.6) (0.7) (0.1)
Net periodic pension costs $ (2.4) $ (0.9) $ (16.4)
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets 6.88% 7.10% 6.26%
Cash balance interest credit rate 3.26% 3.23% 3.05%
Pension Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Interest cost $ 29.3 $ 30.6  
Discount rate 4.97% 5.21% 2.73%