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Business Segments (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($) | Sep. 30, 2015 USD ($) segment | Sep. 30, 2014 USD ($)
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract] |  |  |  |
Number of business segments | segment |  |  | 2 |
Segment Reporting Information [Line Items] |  |  |  |
Retirement Benefit Expense | $ 19.3 | $ 23.8 | $ 57.8 | $ 71.8
Sales | 832.7 | 1,069.6 | 2,980.7 | 3,175.9
Operating profit (loss): | (73.0) | 59.9 | 14.3 | 129.8
LIFO and net realizable value reserves | 0.2 | 10.0 | 0.0 | 12.9
Corporate expenses | (10.7) | (11.4) | (33.6) | (37.3)
Closed company and other expenses | (6.5) | (9.2) | (18.6) | (22.1)
Interest expense, net | (27.5) | (25.2) | (81.0) | (82.8)
Income (loss) from continuing operations before income tax provision (benefit) | (117.9) | 4.1 | (118.9) | (25.3)
High Performance Materials & Components |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales: | 474.7 | 507.7 | 1,528.6 | 1,506.2
Operating profit (loss): | 18.8 | 53.8 | 136.1 | 162.5
Flat Rolled Products |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales: | 358.0 | 561.9 | 1,452.1 | 1,669.7
Operating profit (loss): | (91.8) | 6.1 | (121.8) | (32.7)
Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Retirement Benefit Expense | 17.7 | 20.7 | 53.2 | 62.4
Total sales: | 867.9 | 1,114.1 | 3,104.5 | 3,309.7
Operating Segments | High Performance Materials & Components |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Retirement Benefit Expense | 3.0 | 5.1 | 9.1 | 15.6
Total sales: | 490.1 | 527.1 | 1,588.5 | 1,562.6
Operating Segments | Flat Rolled Products |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Retirement Benefit Expense | 14.7 | 15.6 | 44.1 | 46.8
Total sales: | 377.8 | 587.0 | 1,516.0 | 1,747.1
Intersegment Sales |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales: | 35.2 | 44.5 | 123.8 | 133.8
Intersegment Sales | High Performance Materials & Components |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales: | 15.4 | 19.4 | 59.9 | 56.4
Intersegment Sales | Flat Rolled Products |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales: | 19.8 | 25.1 | 63.9 | 77.4
Non-Segment | Corporate expenses |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Retirement Benefit Expense | 1.0 | 1.3 | 2.9 | 4.0
Non-Segment | Closed company and other expenses |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Retirement Benefit Expense | $ 0.6 | $ 1.8 | $ 1.7 | $ 5.4

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