Equity - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Changes in Accumulated Other Comprehensive Loss by Component [Roll Forward]
Beginning balance		$ 24.8	$ 18.6	$ 28.2	$ 19.5
Remeasurement of benefit obligations		(2.8)	0.0	(2.8)	0.0
Reclassifications, net		(1.3)	(1.2)	(2.1)	(2.1)
Foreign currency translation (loss) gain		(1.0)	2.4	(3.6)	2.4
Ending balance		19.7	19.8	19.7	19.8
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Changes in Accumulated Other Comprehensive Loss by Component [Roll Forward]
Beginning balance		32.4	26.2	33.2	27.1
Remeasurement of benefit obligations		(2.8)		(2.8)
Reclassifications, net	[1]	(1.3)	(1.2)	(2.1)	(2.1)
Foreign currency translation (loss) gain		0.0	0.0	0.0	0.0
Ending balance		28.3	25.0	28.3	25.0
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Changes in Accumulated Other Comprehensive Loss by Component [Roll Forward]
Beginning balance		(7.6)	(7.6)	(5.0)	(7.6)
Remeasurement of benefit obligations		0.0		0.0
Reclassifications, net		0.0	0.0		0.0
Foreign currency translation (loss) gain		(1.0)	2.4	(3.6)	2.4
Ending balance		$ (8.6)	$ (5.2)	$ (8.6)	$ (5.2)

[1] These reclassifications are included in the other components of net periodic pension and postretirement benefit plans expense and represent amortization of prior service benefit and actuarial gain, net of tax and pension settlement benefits, net of tax. The other components of net periodic pension and postretirement benefit plans expense are recorded in "Other components of pension and postretirement benefit plans (benefit) expense" on the Condensed Consolidated Statements of Operations. See Note 9 for further disclosures.