Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Beginning balance	$ 2,680.6	$ 2,881.0	$ 2,776.2	$ 2,684.9	$ 2,881.0	$ 2,684.9
Other comprehensive (loss) income before reclassifications					(74.5)	(3.1)
Amounts reclassified out from accumulated other comprehensive (loss) income					1.4	2.6
Other comprehensive (loss) income, net of tax	(24.6)	(48.5)	(15.1)	14.6	(73.1)	(0.5)
Ending balance	2,576.8	2,680.6	2,746.7	2,776.2	2,576.8	2,746.7
Derivatives
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Beginning balance		0.0		0.2	0.0	0.2
Other comprehensive (loss) income before reclassifications					(6.3)	(6.5)
Amounts reclassified out from accumulated other comprehensive (loss) income					1.8	3.5
Other comprehensive (loss) income, net of tax					(4.5)	(3.0)
Ending balance	(4.5)		(2.8)		(4.5)	(2.8)
Change in equity affiliate investment AOCI
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Beginning balance		2.3		1.6	2.3	1.6
Other comprehensive (loss) income before reclassifications					(0.2)	(0.1)
Amounts reclassified out from accumulated other comprehensive (loss) income					0.0	0.0
Other comprehensive (loss) income, net of tax					(0.2)	(0.1)
Ending balance	2.1		1.5		2.1	1.5
Defined benefit pension and other postretirement plans
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Beginning balance		(10.1)		(9.4)	(10.1)	(9.4)
Other comprehensive (loss) income before reclassifications					0.0	(0.5)
Amounts reclassified out from accumulated other comprehensive (loss) income					(0.4)	(0.9)
Other comprehensive (loss) income, net of tax					(0.4)	(1.4)
Ending balance	(10.5)		(10.8)		(10.5)	(10.8)
Foreign currency translation
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Beginning balance		(136.0)		(175.4)	(136.0)	(175.4)
Other comprehensive (loss) income before reclassifications					(68.0)	4.0
Amounts reclassified out from accumulated other comprehensive (loss) income					0.0	0.0
Other comprehensive (loss) income, net of tax					(68.0)	4.0
Ending balance	(204.0)		(171.4)		(204.0)	(171.4)
Total
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Beginning balance	(192.3)	(143.8)	(168.4)	(183.0)	(143.8)	(183.0)
Other comprehensive (loss) income, net of tax	(24.6)	(48.5)	(15.1)	14.6
Ending balance	$ (216.9)	$ (192.3)	$ (183.5)	$ (168.4)	$ (216.9)	$ (183.5)