Segment Information - Schedule of Goodwill and Intangible Assets by Segment (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
Changes in the carrying amount of gross goodwill and other purchased intangibles
Balance at Period Beginning	$ 256.0
Amortization expense	(1.8)
Currency translation adjustments	0.0
Balance at Period Ending	250.6
Composite Materials
Changes in the carrying amount of gross goodwill and other purchased intangibles
Balance at Period Beginning	86.9
Amortization expense	(0.5)
Currency translation adjustments	1.1
Balance at Period Ending	85.3
Engineered Products
Changes in the carrying amount of gross goodwill and other purchased intangibles
Balance at Period Beginning	169.1
Amortization expense	(1.3)
Currency translation adjustments	(2.5)
Balance at Period Ending	$ 165.3