Segment Information - Schedule of Operating Segment Reporting Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Sales	$ 1,324.7	$ 1,502.4	$ 2,355.7
Operating income (loss)	51.8	14.1	425.2
Depreciation and amortization	138.0	140.9	141.7
Equity in earnings (losses) from affiliated companies		(1.6)	3.7
Other operating expense	18.2	57.9
Segment assets	2,819.4	2,917.8	3,128.6
Investments in affiliated companies	44.6	44.7	46.5
Accrual basis additions to property, plant and equipment	41.4	42.5	191.0
Corporate & Other and Intersegment Elimination
Segment Reporting Information [Line Items]
Sales	(59.1)	(56.4)	(84.2)
Operating income (loss)	(56.5)	(56.0)	(58.1)
Depreciation and amortization	0.1	0.1	0.1
Equity in earnings (losses) from affiliated companies	(0.1)	(0.2)	(0.3)
Other operating expense	0.3	16.0
Segment assets	85.6	61.7	(6.2)
Investments in affiliated companies	7.6	7.7	8.2
Composite Materials
Segment Reporting Information [Line Items]
Sales	1,019.4	1,185.9	1,863.1
Composite Materials | Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	88.1	60.7	411.3
Depreciation and amortization	123.4	125.5	126.5
Equity in earnings (losses) from affiliated companies	(0.1)	(0.3)	(0.3)
Other operating expense	17.8	32.1
Segment assets	2,258.2	2,382.3	2,669.6
Investments in affiliated companies	1.7	2.0	2.2
Accrual basis additions to property, plant and equipment	35.7	38.6	185.8
Composite Materials | Intersegment Elimination
Segment Reporting Information [Line Items]
Sales	56.7	53.9	83.4
Engineered Products
Segment Reporting Information [Line Items]
Sales	305.3	316.5	492.6
Engineered Products | Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	20.2	9.4	72.0
Depreciation and amortization	14.5	15.3	15.1
Equity in earnings (losses) from affiliated companies	0.2	(1.1)	4.3
Other operating expense	0.1	9.8
Segment assets	475.6	473.8	465.2
Investments in affiliated companies	35.3	35.0	36.1
Accrual basis additions to property, plant and equipment	5.7	3.9	5.2
Engineered Products | Intersegment Elimination
Segment Reporting Information [Line Items]
Sales	$ 2.4	$ 2.5	$ 0.8