Derivatives (Schedule Of Outstanding Derivatives Entered Into To Hedge Inventory Or Fixed Price Purchase Commitments) (Details)	3 Months Ended
	Mar. 31, 2015 bbl
Sell (Short) Contracts [Member] | Crude Oil Futures [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	520
Weighted average contract price per gal	47.47
Sell (Short) Contracts [Member] | Crude Oil Futures [Member] | Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	353
Weighted average contract price per gal	52.02
Sell (Short) Contracts [Member] | Crude oil LLSWTI swap [Member] | Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	670
Weighted average contract price per gal	2.89
Sell (Short) Contracts [Member] | Fuel Oil Futures [Member] | Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	340
Weighted average contract price per gal	45.46
Sell (Short) Contracts [Member] | Crude Oil Options [Member] | Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	85
Underlying, Derivative	2.36
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	0.00
Buy (Long) Contracts [Member] | Crude Oil Futures [Member] | Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	276
Weighted average contract price per gal	54.27
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	0.00
Buy (Long) Contracts [Member] | Fuel Oil Futures [Member] | Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	95
Weighted average contract price per gal	44.95
Buy (Long) Contracts [Member] | Crude Oil Options [Member] | Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	40
Underlying, Derivative	0.17