Accumulated Other Comprehensive Income (Loss) - Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Loss) Included in Computation of Net Periodic Pension and Post-employment Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Prior service cost	$ 0.0	$ 0.2	$ 0.1	$ 0.3
Actuarial gains	(0.7)	(0.7)	(1.3)	(1.3)
Total before tax	(0.7)	(0.5)	(1.2)	(1.0)
Tax expense	0.2	0.1	0.3	0.2
Net of tax	$ (0.5)	$ (0.4)	$ (0.9)	$ (0.8)