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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, Recurring [Member] | Jun. 30, 2021 | Dec. 31, 2020
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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 | 16.20% | 13.70%
Transportation cost | 0.00% | 0.00%
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 | 39.60% | 0.70%
Transportation cost | 3.00% | 1.30%
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 | 30.20% | 4.30%
Transportation cost | 12.50% | 10.60%
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 | 29.50% | 28.30%
Transportation cost | 3.30% | 1.90%

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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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- Details
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- Details
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