Comprehensive Income (Loss) - Schedule of Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	$ 377.0	$ 247.8	$ 268.6
Balance	329.5	377.0	247.8
Pension and Other Postretirement Benefits Plans Cost
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(64.4)	(67.6)	(70.9)
Other comprehensive income (loss) before reclassifications	0.0	0.0	0.0
Amounts reclassified from accumulated other comprehensive loss	(3.5)	3.2	3.3
Net change in accumulated other comprehensive loss	(3.5)	3.2	3.3
Balance	(67.9)	(64.4)	(67.6)
Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(13.9)	(13.2)	(13.7)
Other comprehensive income (loss) before reclassifications	(1.4)	(0.3)	0.5
Amounts reclassified from accumulated other comprehensive loss	0.0	(0.4)	0.0
Net change in accumulated other comprehensive loss	(1.4)	(0.7)	0.5
Balance	15.3	(13.9)	(13.2)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(78.3)	(80.8)	(84.6)
Other comprehensive income (loss) before reclassifications	(1.4)	(0.3)	0.5
Amounts reclassified from accumulated other comprehensive loss	(3.5)	2.8	3.3
Net change in accumulated other comprehensive loss	(4.9)	2.5	3.8
Balance	$ (83.2)	$ (78.3)	$ (80.8)