Derivatives (Schedule Of Outstanding Derivatives Entered Into To Hedge Inventory Or Fixed Price Purchase Commitments) (Details)	9 Months Ended
Sep. 30, 2015 bbl $ / bbl $ / units
Sell (Short) Contracts [Member] \| Crude Oil Futures [Member] \| Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	47
Weighted average contract price per gal \| $ / bbl	46.81
Sell (Short) Contracts [Member] \| Crude Oil Futures [Member] \| Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	730
Weighted average contract price per gal \| $ / bbl	44.88
Sell (Short) Contracts [Member] \| Crude oil LLSWTI swap [Member] \| Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	280
Weighted average contract price per gal \| $ / bbl	2.38
Sell (Short) Contracts [Member] \| Diesel Futures [Member] \| Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	58
Weighted average contract price per gal \| $ / bbl	1.58
Sell (Short) Contracts [Member] \| Fuel Oil Futures [Member] \| Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	465
Weighted average contract price per gal \| $ / bbl	36.36
Sell (Short) Contracts [Member] \| Crude Oil Options [Member] \| Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	175
Underlying, Derivative \| $ / bbl	1.68
Buy (Long) Contracts [Member] \| Crude Oil Futures [Member] \| Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	0
Weighted average contract price per gal \| $ / bbl	0.00
Buy (Long) Contracts [Member] \| Crude Oil Futures [Member] \| Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	292
Weighted average contract price per gal \| $ / bbl	46.77
Buy (Long) Contracts [Member] \| Crude oil LLSWTI swap [Member] \| Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	0
Weighted average contract price per gal \| $ / units	0.00
Buy (Long) Contracts [Member] \| Diesel Futures [Member] \| Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	12
Weighted average contract price per gal \| $ / bbl	1.56
Buy (Long) Contracts [Member] \| Fuel Oil Futures [Member] \| Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	105
Weighted average contract price per gal \| $ / bbl	34.76
Buy (Long) Contracts [Member] \| Crude Oil Options [Member] \| Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	30
Underlying, Derivative \| $ / bbl	0.21

- 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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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Specified interest rate, security price, commodity price, foreign exchange rate, index of prices or rates for a derivative contract but not the derivative contract itself.

+ References

No definition available.

+ Details

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- Definition

Specified interest rate, security price, commodity price, foreign exchange rate, index of prices or rates for a derivative contract measured in volume but not the derivative contract itself.

+ References

No definition available.

+ Details

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