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v3.3.1.900

Fair Value Measurements Fair Value Measurements, Schedule of Quantitative Information for Level 3 Derivative Contracts (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Midwest Premium Swap Asset Beginning Curve Value | $ 0.084 |
Midwest Premium Swap Asset Ending Curve Value | 0.086 |
Midwest Premium Swap Liability Beginning Curve Value | 0.08 |
Midwest Premium Swap Liability Ending Curve Value | 0.086 |
Derivative Asset | 1,600,000 | $ 85,700,000
Derivative Liability | 16,200,000 | 96,800,000
Fair Value, Measurements, Recurring | Midwest premium swap contracts | Aluminum |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Derivative Asset | 900,000 | 1,000,000
Fair Value, Measurements, Recurring | Midwest premium swap contracts | Aluminum | Level 3 |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Derivative Asset |  | $ 1,000,000
Fair Value, Measurements, Recurring | Midwest premium swap contracts | Aluminum | Income Approach Valuation Technique |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Derivative Liability | 300,000 |
Fair Value, Measurements, Recurring | Midwest premium swap contracts | Aluminum | Income Approach Valuation Technique | Level 3 |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Derivative Asset | 900,000 |
Derivative Liability | $ 300,000 |

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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13495-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226008-175313 + Details
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