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Goodwill and Intangible Assets - Intangible Assets by Major Class (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Schedule of Intangible Assets by Major Class [Line Items] |  |
Cost | $ 76.1 | $ 76.8
Accumulated amortization | (65.3) | (61.7)
Net | 10.8 | 15.1
Patents and licensing |  |
Schedule of Intangible Assets by Major Class [Line Items] |  |
Cost | 24.7 | 24.8
Accumulated amortization | (23.0) | (21.8)
Net | 1.7 | 3.0
Technology |  |
Schedule of Intangible Assets by Major Class [Line Items] |  |
Cost | 3.3 | 3.3
Accumulated amortization | (2.7) | (2.5)
Net | 0.6 | 0.8
Trademarks |  |
Schedule of Intangible Assets by Major Class [Line Items] |  |
Cost | 1.2 | 1.2
Accumulated amortization | (1.2) | (1.2)
Net | 0.0 | 0.0
Customer relationships |  |
Schedule of Intangible Assets by Major Class [Line Items] |  |
Cost | 38.9 | 39.5
Accumulated amortization | (30.8) | (29.0)
Net | 8.1 | 10.5
Customer contracts |  |
Schedule of Intangible Assets by Major Class [Line Items] |  |
Cost | 8.0 | 8.0
Accumulated amortization | (7.6) | (7.2)
Net | $ 0.4 | $ 0.8

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