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Business Segments (Details3) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Segment Reporting Asset Reconciling Item [Line Items] |  |  |
Total assets | $ 4,285.2 | $ 4,034.9 | $ 5,634.6
Deferred taxes | 175.9 | 208.5 |
Cash and cash equivalents | 687.7 | 645.9 |
Corporate, Non-Segment [Member] |  |  |
Segment Reporting Asset Reconciling Item [Line Items] |  |  |
Deferred taxes | 6.3 | 5.1 | 64.5
Cash and cash equivalents | 740.1 | 771.2 | 658.1
High Performance Materials & Components |  |  |
Segment Reporting Asset Reconciling Item [Line Items] |  |  |
Total assets | 1,624.8 | 1,594.6 | 2,162.8
Advanced Alloys & Solutions [Member] |  |  |
Segment Reporting Asset Reconciling Item [Line Items] |  |  |
Total assets | $ 1,914.0 | $ 1,664.0 | $ 2,749.2

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