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Pension and Other Postretirement Benefits Pension Narrative (Details) - USD ($)
$ in Millions
 4 Months Ended 8 Months Ended 12 Months Ended
Jan. 01, 2023
Apr. 30, 2021
Apr. 30, 2021
Dec. 31, 2021
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]              
Net benefit liabilities         $ 146.3 $ 164.6  
Net projected benefit obligations, current         $ 4.7 $ 4.8  
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets   6.03% 6.03% 6.03% 7.10% 6.26%  
Liability, Defined Benefit Plan, Noncurrent         $ 141.6 $ 159.8  
Employer contributions         5.9 3.5  
Defined Benefit Plan, Expected Return (Loss) on Plan Assets     $ 12.1 $ 24.7 31.4 38.3  
Defined Benefit Plan, Plan Assets, Amount       634.6 471.2 458.5  
Interest cost     $ 6.6 15.6 31.2 22.4  
Defined Contribution Plan, Cost         $ 8.0 $ 4.7  
Forecast [Member]              
Defined Benefit Plan Disclosure [Line Items]              
Defined Benefit Plan, Plan Assets, Amount             $ 1.2
Savings Plan [Member]              
Defined Benefit Plan Disclosure [Line Items]              
Employee match         100.00%    
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent 5.00%         4.00%  
Maximum              
Defined Benefit Plan Disclosure [Line Items]              
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets         6.88%    
Minimum              
Defined Benefit Plan Disclosure [Line Items]              
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets           7.10%  
Pension Plan [Member]              
Defined Benefit Plan Disclosure [Line Items]              
Net benefit liabilities         $ 135.3 $ 153.0  
Net projected benefit obligations, current         3.6 3.7  
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year         23.7    
Liability, Defined Benefit Plan, Noncurrent         131.7 149.3  
Employer contributions         5.9 3.5  
Defined Benefit Plan, Plan Assets, Amount       $ 634.6 471.2 458.5  
Interest cost         $ 30.6 $ 22.0