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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Beginning balance |  | $ (931.4) | $ (713.2) |  | $ (1,029.4) |
OCI before reclassifications |  | (121.7) | (270.3) |  | 236.1 |
Amounts reclassified from AOCI |  | 38.6 | 52.1 |  | 80.1 |
Net current-period OCI |  | (83.1) | (218.2) |  | 316.2 |
Ending balance |  | (1,014.5) | (931.4) |  | (713.2) |
Increase (Decrease) in Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 25.0 | 27.1 |  | 23.7 |
OCI before reclassifications |  | (5.6) | (2.1) |  | 3.4 |
Amounts reclassified from AOCI |  | 0.0 | 0.0 |  | 0.0 |
Net current-period OCI |  | (5.6) | (2.1) |  | 3.4 |
Ending balance |  | 19.4 | 25.0 |  | 27.1 |
Post- retirement benefit plans [Member] |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Beginning balance |  | (931.5) | (718.9) |  | (1,030.0) |
OCI before reclassifications |  | (69.6) | (266.4) |  | 241.1 |
Amounts reclassified from AOCI | [1] | 49.9 | 53.8 |  | 70.0 |
Net current-period OCI |  | (19.7) | (212.6) |  | 311.1 |
Ending balance |  | (951.2) | (931.5) |  | (718.9) |
Increase (Decrease) in Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 0.0 | 0.0 |  | 0.0 |
OCI before reclassifications |  | 0.0 | 0.0 |  | 0.0 |
Amounts reclassified from AOCI |  | 0.0 | 0.0 |  | 0.0 |
Net current-period OCI |  | 0.0 | 0.0 |  | 0.0 |
Ending balance |  | 0.0 | 0.0 |  | 0.0 |
Currency translation adjustment [Member] |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Beginning balance |  | (16.2) | 15.3 |  | 3.4 |
OCI before reclassifications |  | (31.4) | (32.0) |  | 10.4 |
Amounts reclassified from AOCI |  | 0.0 | 0.5 | [2] | 1.5 | [2]
Net current-period OCI |  | (31.4) | (31.5) |  | 11.9 |
Ending balance |  | (47.6) | (16.2) |  | 15.3 |
Increase (Decrease) in Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 25.0 | 27.1 |  | 23.7 |
OCI before reclassifications |  | (5.6) | (2.1) |  | 3.4 |
Amounts reclassified from AOCI | [3] | 0.0 | 0.0 |  | 0.0 |
Net current-period OCI |  | (5.6) | (2.1) |  | 3.4 |
Ending balance |  | 19.4 | 25.0 |  | 27.1 |
Unrealized holding gains on securities [Member] |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 0.0 | 0.0 |  | (0.1) |
OCI before reclassifications |  | 0.0 | 0.0 |  | 0.1 |
Amounts reclassified from AOCI | [3] | 0.0 | 0.0 |  | 0.0 |
Net current-period OCI |  | 0.0 | 0.0 |  | 0.1 |
Ending balance |  | 0.0 | 0.0 |  | 0.0 |
Increase (Decrease) in Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 0.0 | 0.0 |  | 0.0 |
OCI before reclassifications |  | 0.0 | 0.0 |  | 0.0 |
Amounts reclassified from AOCI |  | 0.0 | 0.0 |  | 0.0 |
Net current-period OCI |  | 0.0 | 0.0 |  | 0.0 |
Ending balance |  | 0.0 | 0.0 |  | 0.0 |
Derivatives [Member] |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 16.3 | (9.6) |  | (2.7) |
OCI before reclassifications |  | (20.7) | 28.1 |  | (15.5) |
Amounts reclassified from AOCI | [4] | (11.3) | (2.2) |  | 8.6 |
Net current-period OCI |  | (32.0) | 25.9 |  | (6.9) |
Ending balance |  | (15.7) | 16.3 |  | (9.6) |
Increase (Decrease) in Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 0.0 | 0.0 |  | 0.0 |
OCI before reclassifications |  | 0.0 | 0.0 |  | 0.0 |
Amounts reclassified from AOCI |  | 0.0 | 0.0 |  | 0.0 |
Net current-period OCI |  | 0.0 | 0.0 |  | 0.0 |
Ending balance |  | $ 0.0 | $ 0.0 |  | $ 0.0 |
[1] | Amounts were included in net periodic benefit cost for pension and other postretirement benefit plans (see Note 12).
[2] | Amount in 2014 is included in other income, net, and amount in 2013 is included in discontinued operations as part of the gain on sale of the tungsten materials business (see Note 3).
[3] | No amounts were reclassified to earnings.
[4] | Amounts related to the effective portion of the derivatives are included in cost of goods sold in the period or periods the hedged item affects earnings. Amounts related to the ineffective portion of the derivatives are presented in selling and administrative expenses on the consolidated statements of operations (see Note 10).

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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e681-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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