Property, Plant, and Equipment - Components of Property, Plant, and Equipment (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Property, Plant, And Equipment [Line Items]
Property, plant and equipment, at cost	$ 7,651.8	$ 7,313.5
Less accumulated depreciation	(4,291.0)	(4,120.1)
Property, plant, and equipment, net	3,360.8	3,193.4
Land and Land Improvements
Property, Plant, And Equipment [Line Items]
Property, plant and equipment, at cost	186.2	179.6
Buildings
Property, Plant, And Equipment [Line Items]
Property, plant and equipment, at cost	895.5	858.5
Machinery and Equipment
Property, Plant, And Equipment [Line Items]
Property, plant and equipment, at cost	6,055.2	5,826.6
Construction in Progress
Property, Plant, And Equipment [Line Items]
Property, plant and equipment, at cost	417.5	360.0
Other
Property, Plant, And Equipment [Line Items]
Property, plant and equipment, at cost	$ 97.4	$ 88.8