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Business Segments (Details3) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Segment Reporting Asset Reconciling Item [Line Items] |  |  |
Identifiable Assets | $ 5,634.6 | $ 5,501.8 | $ 5,185.4
Deferred taxes | 537.9 | 478.8 |
High Performance Materials & Components |  |  |
Segment Reporting Asset Reconciling Item [Line Items] |  |  |
Identifiable Assets | 2,324.6 | 2,400.7 | 2,329.9
Advanced Alloys & Solutions |  |  |
Segment Reporting Asset Reconciling Item [Line Items] |  |  |
Identifiable Assets | 2,621.1 | 2,590.4 | 2,550.8
Discontinued Operations [Member] |  |  |
Segment Reporting Asset Reconciling Item [Line Items] |  |  |
Identifiable Assets | 0.0 | 0.0 | 0.2
Corporate, Non-Segment [Member] |  |  |
Segment Reporting Asset Reconciling Item [Line Items] |  |  |
Deferred taxes | 64.5 | 8.7 | 7.6
Corporate: Cash and cash equivalents and other [Member] |  |  |
Segment Reporting Asset Reconciling Item [Line Items] |  |  |
Identifiable Assets | $ 624.4 | $ 502.0 | $ 296.9

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