Revenue - Schedule of Activity Related to Contract Assets (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | 9 Months Ended |
|---|---|---|---|
Mar. 31, 2026 |
Jun. 30, 2026 |
Sep. 30, 2026 |
|
| Change in Contract with Customer Asset [Line Items] | |||
| Beginning Balance | $ 35.9 | $ 35.9 | $ 35.9 |
| Net revenue billed | 4.5 | 1.2 | 0.1 |
| Ending Balance | 40.4 | 41.6 | 41.7 |
| Composite Material | |||
| Change in Contract with Customer Asset [Line Items] | |||
| Beginning Balance | 11.4 | 11.4 | 11.4 |
| Net revenue billed | 1.2 | 2.0 | (1.7) |
| Ending Balance | 12.6 | 14.6 | 12.9 |
| Engineered Products | |||
| Change in Contract with Customer Asset [Line Items] | |||
| Beginning Balance | 24.5 | 24.5 | 24.5 |
| Net revenue billed | 3.3 | (0.8) | 1.8 |
| Ending Balance | $ 27.8 | $ 27.0 | $ 28.8 |