Goodwill and Purchased Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Gross Goodwill and Other Purchased Intangible Assets

Changes in the carrying amount of gross goodwill and other purchased intangibles for the years ended December 31, 2018 and 2017, by segment, are as follows:

(In millions)	Composite Materials			Engineered Products			Total
Balance as of December 31, 2016	$	56.1		$	16.1		$	72.2
Amortization expense		(1.0	)	—				(1.0	)
Additions		41.2		28.9				70.1
Currency translation adjustments and other		7.4		—				7.4
Balance as of December 31, 2017	$	103.7		$	45.0		$	148.7
Amortization expense		(2.0	)		(0.9	)		(2.9	)
Currency translation adjustments and other		(3.5	)	—				(3.5	)
Balance as of December 31, 2018	$	98.2		$	44.1		$	142.3