Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Beginning balance	$ 2,881.0	$ 2,684.9	$ 2,335.4
Other comprehensive (loss) income before reclassifications	(116.6)	34.1	(56.0)
Amounts reclassified out	2.3	5.1	32.6
Other comprehensive (loss) income, net of tax	(114.3)	39.2	(23.4)
Ending balance	2,682.3	2,881.0	2,684.9
Derivatives
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Beginning balance	0.0	0.2	(1.2)
Other comprehensive (loss) income before reclassifications	(5.6)	(6.8)	0.5
Amounts reclassified out	3.1	6.6	0.9
Other comprehensive (loss) income, net of tax	(2.5)	(0.2)	1.4
Ending balance	(2.5)	0.0	0.2
Equity affiliate investment AOCI
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Beginning balance	2.3	1.6	1.5
Other comprehensive (loss) income before reclassifications	0.2	0.7	0.1
Amounts reclassified out	0.0	0.0	0.0
Other comprehensive (loss) income, net of tax	0.2	0.7	0.1
Ending balance	2.5	2.3	1.6
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)	(31.8)
Other comprehensive (loss) income before reclassifications	1.1	0.8	(9.3)
Amounts reclassified out	(0.8)	(1.5)	31.7
Other comprehensive (loss) income, net of tax	0.3	(0.7)	22.4
Ending balance	(9.8)	(10.1)	(9.4)
Foreign currency translation
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Beginning balance	(136.0)	(175.4)	(128.1)
Other comprehensive (loss) income before reclassifications	(112.3)	39.4	(47.3)
Amounts reclassified out	0.0	0.0	0.0
Other comprehensive (loss) income, net of tax	(112.3)	39.4	(47.3)
Ending balance	(248.3)	(136.0)	(175.4)
Total
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Beginning balance	(143.8)	(183.0)	(159.6)
Other comprehensive (loss) income, net of tax	(114.3)	39.2	(23.4)
Ending balance	$ (258.1)	$ (143.8)	$ (183.0)