Property, Plant and Equipment, net (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Cost of Property Repairs and Maintenance	$ 142.2	$ 136.2	$ 130.0
Capitalized Computer Software, Amortization	17.7	16.7	19.2
Property, plant and equipment, net
Land	15.9	15.0
Buildings (including improvements)	924.0	822.7
Machinery and equipment	1,941.5	1,697.0
Tooling	1,047.4	1,032.3
Capitalized software	277.8	269.2
Construction-in-progress	192.8	227.8
Property, Plant and Equipment, Gross	4,399.4	4,064.0
Less: accumulated depreciation	(2,127.7)	(1,896.4)
Property, plant and equipment, net	$ 2,271.7	$ 2,167.6	$ 2,105.3

Machinery And Equipment Excluding Tooling Gross

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Gross tooling

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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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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 expense for amortization of capitalized computer software costs.

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Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

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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 aggregate costs of keeping the property in good condition but that do not appreciably prolong the life or increase the value of the property.

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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, 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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