Goodwill and Purchased Intangible Assets - Additional Information (Details) $ in Millions	12 Months Ended
Dec. 31, 2019 USD ($)
Goodwill And Indefinite Lived Intangible Assets By Segment [Line Items]
Indefinite-lived intangible assets	$ 9.2
Definite-lived intangible asset	81.4
Definite-lived intangible asset, accumulated amortization	14.8
Goodwill	$ 189.8
Weighed average remaining life of finite lived intangible assets	13 years
Composite Materials
Goodwill And Indefinite Lived Intangible Assets By Segment [Line Items]
Goodwill	$ 74.4
Engineered Products
Goodwill And Indefinite Lived Intangible Assets By Segment [Line Items]
Goodwill	$ 115.4

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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