Accumulated Other Comprehensive Income (Loss) - Change in AOCI Balances (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' Equity Attributable to Parent, Beginning Balance	$ 1,491.1	$ 905.4	$ 1,488.9	$ 905.4
Other comprehensive income before reclassification	(2.3)	1.7	(19.7)	7.4
Amounts reclassified from accumulated other comprehensive income	(1.1)	(1.5)	(2.3)	(2.8)
Ending balance	1,518.8	935.3	1,518.8	967.2
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' Equity Attributable to Parent, Beginning Balance	(214.4)	(204.3)	(195.8)	(204.3)
Ending balance	(217.8)	(199.9)	(217.8)	(199.7)
Pension and Other Postretirement Benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' Equity Attributable to Parent, Beginning Balance	(132.1)	(130.9)	(132.7)	(130.9)
Other comprehensive income before reclassification	0.0	0.1	(0.4)	0.0
Amounts reclassified from accumulated other comprehensive income	1.0	0.9	2.0	1.9
Ending balance	(131.1)	(130.0)	(131.1)	(129.0)
Derivatives Designated as Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' Equity Attributable to Parent, Beginning Balance	8.3	14.8	9.2	14.8
Other comprehensive income before reclassification	0.4	2.8	1.7	2.4
Amounts reclassified from accumulated other comprehensive income	(2.1)	(1.9)	(4.3)	(3.7)
Ending balance	6.6	12.6	6.6	13.5
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' Equity Attributable to Parent, Beginning Balance	(90.6)	(88.2)	(72.3)	(88.2)
Other comprehensive income before reclassification	(2.7)	(1.2)	(21.0)	5.0
Amounts reclassified from accumulated other comprehensive income	0.0	(0.5)	0.0	(1.0)
Ending balance	$ (93.3)	$ (82.5)	$ (93.3)	$ (84.2)