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, 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.

+ References

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 10
-Section S99
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Property, Plant and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, plant and equipment
Property, plant and equipment, at cost	$ 557.9	$ 537.4
Accumulated depreciation	(357.9)	(335.5)
Property, plant and equipment, net	200.0	201.9	$ 198.5
Land
Property, plant and equipment
Property, plant and equipment, at cost	13.9	14.1
Buildings and improvements
Property, plant and equipment
Property, plant and equipment, at cost	175.8	165.7
Machinery and equipment
Property, plant and equipment
Property, plant and equipment, at cost	354.7	342.2
Construction in progress
Property, plant and equipment
Property, plant and equipment, at cost	$ 13.5	$ 15.4