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Pension - Schedule of Net Periodic Benefit Cost (Details) - Pension Benefits - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Defined Benefit Plan Disclosure        
Service cost $ 0.2 $ 0.3 $ 0.3 $ 0.7
Interest cost 3.5 2.5 6.8 4.9
Expected return on plan assets (3.5) (3.3) (6.9) (6.6)
Amortization of net loss 0.4 0.2 0.8 0.3
Net periodic benefit cost (benefit) $ 0.6 $ (0.3) $ 1.0 $ (0.7)