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Discontinued Operations - Narrative (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |  | 3 Months Ended | 9 Months Ended | 3 Months Ended
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Sep. 30, 2013 | Sep. 16, 2013 Tungsten Materials Business | Sep. 30, 2013 Fabricated Components Business | Sep. 30, 2013 Fabricated Components Business | Sep. 30, 2013 Fabricated Components Business Minimum | Sep. 30, 2013 Fabricated Components Business Maximum | Sep. 30, 2013 Iron Castings Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Estimated Sale Price, Disposed Operation |  | $ 605 |  |  |  |  |
Restructuring Charge | 9.5 |  | 6.4 |  |  |  | 3.1
Impairment of Long-Lived Assets to be Disposed of |  |  | 5.6 |  |  |  |
Lease Exit Costs |  |  | 0.8 |  |  |  |
Restructuring and Related Cost, Expected Cost |  |  |  |  | 3.8 | 4.3 |
Restructuring and Related Cost, Expected Cost, Period to be Incurred |  |  |  | 4 years |  |  |
Restructuring Charges, Net of Tax | $ 8.1 |  |  |  |  |  |

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