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Fair Value Measurements (Unobservable Inputs In Level 3 Valuations Of Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - Weighted Average [Member] - Significant Unobservable Inputs (Level 3) [Member] - Fair Value, Measurements, Recurring [Member] | Jun. 30, 2015 | Dec. 31, 2014
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Inventory Related Payables [Member] |  |
Unobservable inputs in Level 3 Valuations of Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Basis | 33.40% | 43.40%
Transportation cost | 0.00% | 15.20%
Commodity Derivative Contracts Losses [Member] |  |
Unobservable inputs in Level 3 Valuations of Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Basis | 14.40% | 13.60%
Transportation cost | 31.30% | 19.50%
Inventories Carried At Market [Member] |  |
Unobservable inputs in Level 3 Valuations of Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Basis | 14.60% | 23.40%
Transportation cost | 4.00% | 4.90%
Commodity Derivative Contracts Gains [Member] |  |
Unobservable inputs in Level 3 Valuations of Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] |  |
Basis | 22.10% | 13.50%
Transportation cost | 8.80% | 10.20%

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- Definition Adjustment to current market value, based on location, that a market participant is willing to pay, used as an input to measure fair value. + References No definition available. + Details
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- Definition Transportation costs, used as an input to measure fair value. + References No definition available. + Details
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Balance Type: | na
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- Definition Unobservable inputs in Level 3 Valuations of Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items] + References No definition available. + Details
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- Details
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