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Business Segments (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Segment Reporting Information [Line Items] |  |  |  |
Sales | $ 1,022.5 | $ 1,119.0 | $ 2,148.0 | $ 2,106.3
Operating profit (loss): | 39.2 | 65.2 | 123.0 | 108.7
Corporate expenses | (9.2) | (11.7) | (21.0) | (23.2)
Interest expense, net | (26.8) | (28.5) | (53.5) | (57.6)
Closed company and other expenses | (5.5) | (4.3) | (10.9) | (9.3)
Retirement benefit expense | (19.3) | (24.1) | (38.6) | (48.0)
Income (loss) from continuing operations before income tax provision (benefit) | (21.6) | (3.4) | (1.0) | (29.4)
Interest Costs Capitalized | 0.5 | 1.4 |  |
High Performance Materials & Components |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales: | 511.1 | 514.1 | 1,053.9 | 998.5
Operating profit (loss): | 42.6 | 85.1 | 118.5 | 154.2
Flat Rolled Products |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales: | 511.4 | 604.9 | 1,094.1 | 1,107.8
Operating profit (loss): | (3.4) | (19.9) | 4.5 | (45.5)
Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales: | 1,067.0 | 1,161.9 | 2,236.6 | 2,195.6
Operating Segments [Member] | High Performance Materials & Components |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales: | 533.5 | 531.4 | 1,098.4 | 1,035.5
Operating Segments [Member] | Flat Rolled Products |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales: | 533.5 | 630.5 | 1,138.2 | 1,160.1
Intersegment Eliminations [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales: | 44.5 | 42.9 | 88.6 | 89.3
Intersegment Eliminations [Member] | High Performance Materials & Components |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales: | 22.4 | 17.3 | 44.5 | 37.0
Intersegment Eliminations [Member] | Flat Rolled Products |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales: | $ 22.1 | $ 25.6 | $ 44.1 | $ 52.3

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