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Segment Information - Schedule of Segment Assets (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2025	Dec. 31, 2024
Segment Reporting Information [Line Items]
Segment assets	$ 2,843.3	$ 2,725.6
Composite Materials
Segment Reporting Information [Line Items]
Segment assets	2,374.8	2,147.6
Engineered Products
Segment Reporting Information [Line Items]
Segment assets	593.0	541.4
Corporate & Other and Intersegment Elimination
Segment Reporting Information [Line Items]
Segment assets	$ (124.5)	$ 36.6

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- Definition

Amount of expenditure for addition to long-lived assets included in determination of segment assets by chief operating decision maker (CODM) or otherwise regularly provided to CODM. Excludes expenditure for addition to financial instrument, long-term customer relationship of financial institution, mortgage and other servicing rights, deferred policy acquisition cost, and deferred tax assets.

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-Topic 280
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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