Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property Plant And Equipment Details [Abstract]
Land	$ 34.8	$ 34.6
Buildings	564.7	832.7
Equipment and leasehold improvements	2,736.9	3,671.3
Property plant and equipment, gross	3,336.4	4,538.6
Accumulated depreciation and amortization	(1,867.2)	(2,088.5)
Property, plant and equipment, net	1,469.2	2,450.1
Construction in progress	233.4	177.3
Depreciation, Depletion and Amortization [Abstract]
Software and other amortization	8.0	10.0	$ 10.0
Total depreciation and amortization	143.3	151.1	156.4
Operating Segments
Depreciation, Depletion and Amortization [Abstract]
Depreciation of property, plant and equipment	119.5	127.1	131.9
Software and other amortization	23.8	24.0	24.5
Total depreciation and amortization	$ 143.3	$ 151.1	$ 156.4

-- None. No documentation exists for this element. --

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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