v3.25.4
Goodwill and Purchased Intangible Assets - Schedule of Gross Goodwill and Other Purchased Intangible Assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Changes in the carrying amount of gross goodwill and other purchased intangibles    
Balance at the beginning of the period $ 237.0 $ 251.3
Amortization expense (5.6) (6.8)
Intangible Asset Impairment 0.0 (5.2)
Currency translation adjustments and other 8.4 (2.3)
Balance at the end of the period 239.8 237.0
Composite Materials    
Changes in the carrying amount of gross goodwill and other purchased intangibles    
Balance at the beginning of the period 83.1 87.2
Amortization expense (1.6) (1.8)
Intangible Asset Impairment 0.0 0.0
Currency translation adjustments and other 8.4 (2.3)
Balance at the end of the period 89.9 83.1
Engineered Products    
Changes in the carrying amount of gross goodwill and other purchased intangibles    
Balance at the beginning of the period 153.9 164.1
Amortization expense (4.0) (5.0)
Intangible Asset Impairment 0.0 (5.2)
Currency translation adjustments and other 0.0 0.0
Balance at the end of the period $ 149.9 $ 153.9