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Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 810.4	$ 684.1
Less: Accumulated depreciation	448.5	376.7
Property, plant and equipment, net	361.9	307.4
Depreciation expense	35.7	29.4	$ 30.7
Land and improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	15.3	11.2
Buildings and improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	145.1	118.5
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	621.9	526.1
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 28.1	$ 28.3
Minimum [Member] | Buildings and improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	20 years
Minimum [Member] | Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Maximum [Member] | Buildings and improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	40 years
Maximum [Member] | Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	20 years
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | RTL facility [Member]
Property, Plant and Equipment [Line Items]
Assets held for sale	$ 12.8

X

- Definition

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

+ References

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Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

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