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Revenue - Schedule of Activity Related to Contract Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024
Change in Contract with Customer Asset [Line Items]
Beginning Balance	$ 34.5	$ 31.1	$ 25.1
Net revenue billed	1.0	3.4	6.0
Ending Balance	35.5	34.5	31.1
Composite Materials
Change in Contract with Customer Asset [Line Items]
Beginning Balance	10.3	9.9	8.3
Net revenue billed	0.9	0.4	1.6
Ending Balance	11.2	10.3	9.9
Engineered Products
Change in Contract with Customer Asset [Line Items]
Beginning Balance	24.2	21.2	16.8
Net revenue billed	0.1	3.0	4.4
Ending Balance	$ 24.3	$ 24.2	$ 21.2

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- Definition

Change in contract with customer asset.

+ References

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- Definition

Change in unbilled revenue earned over time.

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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479837/606-10-45-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479837/606-10-45-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-8

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