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Goodwill and Intangible Assets - Intangible Assets by Major Class (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Schedule of Intangible Assets by Major Class [Line Items] |  |
Cost | $ 76.3 | $ 76.1
Accumulated amortization | (68.6) | (65.3)
Net | 7.7 | 10.8
Patents and licensing |  |
Schedule of Intangible Assets by Major Class [Line Items] |  |
Cost | 24.7 | 24.7
Accumulated amortization | (24.1) | (23.0)
Net | 0.6 | 1.7
Technology |  |
Schedule of Intangible Assets by Major Class [Line Items] |  |
Cost | 3.3 | 3.3
Accumulated amortization | (2.9) | (2.7)
Net | 0.4 | 0.6
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 | 39.0 | 38.9
Accumulated amortization | (32.5) | (30.8)
Net | 6.5 | 8.1
Customer contracts |  |
Schedule of Intangible Assets by Major Class [Line Items] |  |
Cost | 8.1 | 8.0
Accumulated amortization | (7.9) | (7.6)
Net | $ 0.2 | $ 0.4

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