Summary of Significant Accounting Policies - PPE (Details) - USD ($) $ in Millions		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Finance lease right-of-use asset		$ 5.8	$ 5.0
Property, Plant and Equipment
Property, Plant and Equipment, Gross		2,653.3	2,603.3
Less accumulated depreciation		(1,214.5)	(1,097.0)
Property, plant and equipment, net		1,438.8	1,506.3	$ 1,482.0
Land
Property, Plant and Equipment
Property, Plant and Equipment, Gross		10.2	8.9
Buildings and improvements (10 to 40 years)
Property, Plant and Equipment
Property, Plant and Equipment, Gross		$ 41.6	40.4
Buildings and improvements (10 to 40 years) | Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life		10 years
Buildings and improvements (10 to 40 years) | Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life		40 years
Machinery and equipment (10 to 20 years)
Property, Plant and Equipment
Property, Plant and Equipment, Gross		$ 2,503.7	2,460.0
Machinery and equipment (10 to 20 years) | Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life		10 years
Machinery and equipment (10 to 20 years) | Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life		20 years
Furniture, fixtures and software (5 to 10 years)
Property, Plant and Equipment
Property, Plant and Equipment, Gross		$ 47.5	47.1
Furniture, fixtures and software (5 to 10 years) | Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life		5 years
Furniture, fixtures and software (5 to 10 years) | Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life		10 years
Assets under finance leases (1 to 14 years)
Property, Plant and Equipment
Property, Plant and Equipment, Gross	[1]	$ 8.3	7.4
Assets under finance leases (1 to 14 years) | Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life		1 year
Assets under finance leases (1 to 14 years) | Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life		14 years
Construction-in-progress
Property, Plant and Equipment
Property, Plant and Equipment, Gross		$ 42.0	$ 39.5

[1] Assets under finance leases consist of buildings and machinery and equipment. As of December 31, 2024 and 2023, finance lease assets are recorded net of accumulated amortization of $5.8 million and $5.0 million, respectively.