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Business Segments (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
Segment Reporting Information [Line Items] |  |
Total sales: | $ 987.3 | $ 1,099.0
Operating profit (loss): | 43.5 | 77.5
Corporate expenses | (11.5) | (12.4)
Interest expense, net | (29.1) | (14.4)
Closed company and other expenses | (5.0) | (3.4)
Retirement benefit expense | (23.9) | (32.5)
Income (loss) from continuing operations before income tax provision (benefit) | (26.0) | 14.8
Interest Costs Capitalized | 2.3 | 9.6
High Performance Materials & Components |  |
Segment Reporting Information [Line Items] |  |
Total sales: | 484.4 | 540.1
Operating profit (loss): | 69.1 | 75.0
Flat Rolled Products |  |
Segment Reporting Information [Line Items] |  |
Total sales: | 502.9 | 558.9
Operating profit (loss): | (25.6) | 2.5
Operating Segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Total sales: | 1,033.7 | 1,127.8
Operating Segments [Member] | High Performance Materials & Components |  |
Segment Reporting Information [Line Items] |  |
Total sales: | 504.1 | 560.0
Operating Segments [Member] | Flat Rolled Products |  |
Segment Reporting Information [Line Items] |  |
Total sales: | 529.6 | 567.8
Intersegment Eliminations [Member] |  |
Segment Reporting Information [Line Items] |  |
Total sales: | 46.4 | 28.8
Intersegment Eliminations [Member] | High Performance Materials & Components |  |
Segment Reporting Information [Line Items] |  |
Total sales: | 19.7 | 19.9
Intersegment Eliminations [Member] | Flat Rolled Products |  |
Segment Reporting Information [Line Items] |  |
Total sales: | $ 26.7 | $ 8.9

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- Definition Net interest expense - the cost of borrowed funds as interest charged against earnings during the period net of interest income derived from investments in debt securities and on cash and cash equivalents. + References No definition available. + Details
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- Definition Business segment operating profit, which excludes costs for restructuring charges, retirement benefit income or expense, corproate expenses, interest expense, debt extinguishment costs and costs associated with closed operations. These costs are excluded for segment reporting to provide a profit measure based on what management considers to be controllable costs at the business segment level + References No definition available. + Details
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