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Segment and Geographical Area Information, Financial Information by Operating Segment Table (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2010 | Sep. 30, 2010 | Jun. 30, 2010 | Mar. 31, 2010 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Net Sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 317.6 |  | $ 322.3 | $ 338.8 | $ 322.6 | $ 265.8 |  | $ 263.4 | $ 282.4 | $ 267.5 | $ 1,301.3 | [1] | $ 1,079.1 |  | $ 987.0 |
Segment Operating Income (Loss): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total operating income (loss) | 15.6 |  | 4.9 | 14.7 | 19.8 | 11.6 |  | 12.3 | 3.2 | 14.0 | 55.0 |  | 41.1 |  | 118.7 |
Interest expense |  |  |  |  |  |  |  |  |  |  | (18.0) |  | (11.8) |  | 0 |
Other income (expense), net |  |  |  |  |  |  |  |  |  |  | 4.3 |  | (4.2) |  | (0.1) |
Income before income taxes |  |  |  |  |  |  |  |  |  |  | 41.3 |  | 25.1 |  | 118.6 |
Depreciation and Amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation and Amortization |  |  |  |  |  |  |  |  |  |  | 25.2 |  | 19.8 |  | 16.4 |
Capital Expenditures: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  |  |  | 32.5 |  | 38.9 |  | 59.2 |
Segment assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets | 1,320.6 |  |  |  |  | 1,318.9 |  |  |  |  | 1,320.6 |  | 1,318.9 |  |  |
Segment Reporting Information, Additional Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prior Period Reclassification Adjustment |  |  |  |  |  |  |  |  |  |  | (25.0) |  | 3.1 |  | 74.8 |
Prior Period Reclassification Adjustment Balance Sheet | 0.6 |  |  |  |  | 28.6 |  |  |  |  | 0.6 |  | 28.6 |  |  |
Lower of cost or market inventory write-down |  |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 9.3 |
Restructuring Charges |  |  |  |  |  |  |  |  |  |  | (0.3) |  | (0.3) |  | 5.4 |
Environmental expenses included in operating results |  |  |  |  |  |  |  |  |  |  | 3.9 |  | 13.9 |  | 2.4 |
Impairment charge |  |  |  |  |  |  |  |  |  |  | 0 |  | 4.6 |  | 2.3 |
Unrealized (losses) gains on derivatives |  |  |  |  |  |  |  |  |  |  | (25.9) |  | (5.6) |  | 80.5 |
Impairment of investment in Anglesey |  |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | (1.8) |
Sales to Largest Customer Percentage |  |  |  |  |  |  |  |  |  |  | 21.00% |  | 23.00% |  | 20.00% |
Export Sales Percentage |  |  |  |  |  |  |  |  |  |  | 14.00% |  | 13.00% |  | 10.00% |
Fabricated Products |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 1,301.3 |  | 1,078.8 |  | 897.1 |
Segment Operating Income (Loss): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total operating income (loss) |  |  |  |  |  |  |  |  |  |  | 83.6 | [2],[3] | 81.7 | [2],[3] | 148.4 | [2],[3]
Depreciation and Amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation and Amortization |  |  |  |  |  |  |  |  |  |  | 24.8 |  | 19.4 |  | 16.2 |
Capital Expenditures: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  |  |  | 32.1 |  | 38.0 |  | 58.5 |
Segment assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets | 637.0 |  |  |  |  | 525.3 |  |  |  |  | 637.0 |  | 525.3 |  |  |
Segment Reporting Information, Additional Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-cash LIFO inventory (benefits) charges |  |  |  |  |  |  |  |  |  |  | (7.1) |  | 16.5 |  | 8.7 |
Restructuring Charges |  |  |  |  |  |  |  |  |  |  | (0.3) |  |  |  | 5.4 |
Environmental expenses included in operating results |  |  |  |  |  |  |  |  |  |  | 1.7 |  | 13.6 |  | 0.7 |
Impairment charge |  |  |  |  |  |  |  |  |  |  |  |  | 3.9 |  |  |
Unrealized (losses) gains on derivatives |  |  |  |  |  |  |  |  |  |  | (29.9) |  | (0.7) |  | 66.1 |
All Other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 0 | [4] | 0.3 | [4] | 89.9 | [4]
Segment Operating Income (Loss): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total operating income (loss) |  |  |  |  |  |  |  |  |  |  | (28.6) | [5] | (40.6) | [5] | (29.7) | [5]
Depreciation and Amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation and Amortization |  |  |  |  |  |  |  |  |  |  | 0.4 |  | 0.4 |  | 0.2 |
Capital Expenditures: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  |  |  | 0.4 |  | 0.9 |  | 0.7 |
Segment assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets | 683.6 | [6] |  |  |  | 793.6 | [6] |  |  |  | 683.6 | [6] | 793.6 | [6] |  |
Segment Reporting Information, Additional Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of investment in Anglesey |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.8 |
Anglesey Aluminum Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information, Additional Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership Percentage of Anglesey | 49.00% |  |  |  |  |  |  |  |  |  | 49.00% |  |  |  |  |
Aluminum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information, Additional Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized (losses) gains on derivatives |  |  |  |  |  |  |  |  |  |  | (26.5) |  | 3.6 |  | 61.2 |
Foreign Currency |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information, Additional Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized (losses) gains on derivatives |  |  |  |  |  |  |  |  |  |  | 0 |  | 0.1 |  | 15.6 |
Foreign Currency | All Other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information, Additional Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized (losses) gains on derivatives |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 14.4 |
[1] | The combined results presented for year ended December 31, 2011 are the actual results presented in the Statements of Consolidated Income, as the operating results for the Chandler, Arizona (Extrusion) facility were included in the Company's consolidated operating results commencing January 1, 2011 (see Note 1).
[2] | Fabricated Products segment results for 2011, 2010 and 2009 include non-cash mark-to-market (losses) gains on primary aluminum, natural gas, electricity and foreign currency hedging activities totaling $(29.9), $(0.7) and $66.1, respectively. For further discussion regarding mark-to-market matters, see Note 12.
[3] | Operating results in the Fabricated Products segment for 2011, 2010 and 2009 included non-cash LIFO inventory (benefits) charges of $(7.1), $16.5 and $8.7, respectively. Also included in the Fabricated Products segment operating results for 2009 were $9.3 of lower of cost or market inventory write-down and $5.4 of restructuring charges relating to the restructuring plans involving the Company's Tulsa, Oklahoma and Bellwood, Virginia facilities. Restructuring charges in 2011 and 2010 were not material. Also included in the Fabricated Products segment operating results for 2011, 2010 and 2009 were $1.7, $13.6 and $0.7, respectively, of environmental expense. Fabricated Products segment operating results for 2010 also included $3.9 of asset impairment charge relating to certain Property, plant and equipment.
[4] | Net sales in All Other in 2010 represent residual activity involving primary aluminum purchased by the Company from Anglesey while it continued its smelting operations, prior to September 30, 2009, and resold by the Company in the first quarter of 2010. In connection with Anglesey’s remelt operations beginning in the fourth quarter of 2009, the Company changed its basis of revenue recognition from gross to a net basis (see Note 1).
[5] | Operating results of All Other for 2009 include non-cash mark-to-market gain on foreign currency derivatives of $14.4. Also included in the operating income of All Other were $1.8 of impairment charges in 2009 relating to the Company's investment in Anglesey.
[6] | Assets in All Other represent primarily all of the Company’s cash and cash equivalents, financial derivative assets, net assets in respect of VEBA(s) and net deferred income tax assets.

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