Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance, beginning of period	$ 2,335.4	$ 1,854.5
Other comprehensive (loss) income before reclassifications	(23.6)	(30.9)
Amounts reclassified out from accumulated other comprehensive (loss) income	0.8	1.3
Other comprehensive loss, net of tax	(22.8)	(29.6)
Balance, end of period	2,326.2	1,829.0
Total
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance, beginning of period	(159.6)	(110.6)
Other comprehensive loss, net of tax	(22.8)	(29.6)
Balance, end of period	(182.4)	(140.2)
(Losses) gains on derivatives
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance, beginning of period	(1.2)	(1.9)
Other comprehensive (loss) income before reclassifications	(1.9)	(2.6)
Amounts reclassified out from accumulated other comprehensive (loss) income	0.3	0.8
Other comprehensive loss, net of tax	(1.6)	(1.8)
Balance, end of period	(2.8)	(3.7)
Change in equity affiliate investment AOCI
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance, beginning of period	1.5	0.6
Other comprehensive (loss) income before reclassifications	0.0	0.0
Amounts reclassified out from accumulated other comprehensive (loss) income	0.0	0.0
Other comprehensive loss, net of tax	0.0	0.0
Balance, end of period	1.5	0.6
Defined benefit pension and other postretirement plans
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance, beginning of period	(31.8)	(40.5)
Other comprehensive (loss) income before reclassifications	0.4	0.1
Amounts reclassified out from accumulated other comprehensive (loss) income	0.5	0.5
Other comprehensive loss, net of tax	0.9	0.6
Balance, end of period	(30.9)	(39.9)
Foreign currency translation
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance, beginning of period	(128.1)	(68.8)
Other comprehensive (loss) income before reclassifications	(22.1)	(28.4)
Amounts reclassified out from accumulated other comprehensive (loss) income	0.0	0.0
Other comprehensive loss, net of tax	(22.1)	(28.4)
Balance, end of period	$ (150.2)	$ (97.2)