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Schedule of Employee Benefit Plans Components of Net Periodic Benefit Cost (Credit) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Pension Plan [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service cost $ 0.3 $ 0.5
Interest cost 6.0 4.2
Expected asset return (7.2) (8.0)
Amortized loss (gain) 1.0 1.9
Net periodic benefit cost (credit) 0.1 (1.4)
Other Postretirement Benefits Plan [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Service cost 0.0 0.1
Interest cost 2.5 2.1
Amortized loss (gain) (2.1) 0.1
Amortized prior service credit (0.1) (0.2)
Net periodic benefit cost $ 0.3 $ 2.1