Goodwill and Purchased Intangible Assets - Schedule of Gross Goodwill and Other Purchased Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Changes in the carrying amount of gross goodwill and other purchased intangibles
Balance at the beginning of the period	$ 59.8	$ 61.0
Amortization expense	(0.3)	(0.3)
Currency translation adjustments and other	(0.6)	(0.9)
Balance at the end of the period	58.9	59.8
Composite Materials
Changes in the carrying amount of gross goodwill and other purchased intangibles
Balance at the beginning of the period	43.7	44.9
Amortization expense	(0.3)	(0.3)
Currency translation adjustments and other	(0.6)	(0.9)
Balance at the end of the period	42.8	43.7
Engineered Products
Changes in the carrying amount of gross goodwill and other purchased intangibles
Balance at the beginning of the period	16.1	16.1
Balance at the end of the period	$ 16.1	$ 16.1