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Derivative Financial Instruments and Related Hedging Programs, Notional Quantity Table (Details) | Dec. 31, 2015 MMBTU mmlbs MWH
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2016 |
Summary of material derivative positions |
Percentage of natural gas purchases for which the Company's exposure to fluctuations in gas prices have been reduced | 73.00%
2017 |
Summary of material derivative positions |
Percentage of natural gas purchases for which the Company's exposure to fluctuations in gas prices have been reduced | 72.00%
2018 |
Summary of material derivative positions |
Percentage of natural gas purchases for which the Company's exposure to fluctuations in gas prices have been reduced | 59.00%
Not Designated as Hedging Instrument | Aluminum | Option contracts | Purchase |
Summary of material derivative positions |
Derivative notional amount | 4.7
Not Designated as Hedging Instrument | Aluminum | Swap contracts | Purchase |
Summary of material derivative positions |
Derivative notional amount | 132.9
Not Designated as Hedging Instrument | Aluminum | Swap contracts | Sale |
Summary of material derivative positions |
Derivative notional amount | 3.0
Not Designated as Hedging Instrument | Aluminum | Midwest premium swap contracts | Purchase |
Summary of material derivative positions |
Derivative notional amount | 84.9
Not Designated as Hedging Instrument | Natural Gas | Swap contracts | Purchase |
Summary of material derivative positions |
Derivative notional amount | MMBTU | 7,000,000
Not Designated as Hedging Instrument | Foreign Currency | Swap contracts | Purchase |
Summary of material derivative positions |
Derivative notional amount | MWH | 4,699,750

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- Definition Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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