Segment Information - Schedule of Operating Segment Reporting Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Total sales	$ 364.7	$ 333.8	$ 1,148.3	$ 964.4
Other operating (income) expense	0.4	0.8	(17.7)	16.0
Operating income	40.8	22.8	134.7	28.8
Depreciation and amortization	31.0	33.7	94.9	102.4
Stock-based compensation	2.4	2.9	15.2	16.2
Accrual basis additions to capital expenditures	20.8	6.5	49.1	14.3
Intersegment Elimination
Segment Reporting Information [Line Items]
Total sales	(16.1)	(15.4)	(52.4)	(44.6)
Corporate & Other and Intersegment Elimination
Segment Reporting Information [Line Items]
Total sales	(16.1)	(15.4)	(52.4)	(44.6)
Other operating (income) expense		0.0	19.4	(0.2)
Operating income	(6.6)	(13.7)	22.2	(50.2)
Depreciation and amortization		0.0	0.1	0.1
Stock-based compensation	1.1	2.1	9.4	13.7
Accrual basis additions to capital expenditures	0.1	0.0	0.1	0.0
Composite Materials
Segment Reporting Information [Line Items]
Total sales	293.5	254.1	925.4	732.2
Composite Materials | Intersegment Elimination
Segment Reporting Information [Line Items]
Total sales	15.4	15.0	50.4	42.8
Composite Materials | Operating Segments
Segment Reporting Information [Line Items]
Total sales	308.9	269.1	975.8	775.0
Other operating (income) expense	0.4	(0.8)	(1.6)	(16.3)
Operating income	41.4	30.0	131.2	61.9
Depreciation and amortization	27.5	30.1	84.2	91.4
Stock-based compensation	1.0	0.7	4.5	2.1
Accrual basis additions to capital expenditures	17.9	3.7	42.5	10.7
Engineered Products
Segment Reporting Information [Line Items]
Total sales	71.2	79.7	222.9	232.2
Engineered Products | Intersegment Elimination
Segment Reporting Information [Line Items]
Total sales	0.7	0.4	2.0	1.8
Engineered Products | Operating Segments
Segment Reporting Information [Line Items]
Total sales	71.9	80.1	224.9	234.0
Other operating (income) expense	0.0	0.0	(0.1)	(0.5)
Operating income	(6.0)	6.5	25.7	17.1
Depreciation and amortization	3.5	3.6	10.6	10.9
Stock-based compensation	0.3	0.1	1.3	0.4
Accrual basis additions to capital expenditures	$ 2.8	$ 2.8	$ 6.5	$ 3.6