Derivatives (Schedule Of Outstanding Derivatives Entered Into To Hedge Inventory Or Fixed Price Purchase Commitments) (Details) (Not Designated As Hedging Instrument [Member])	3 Months Ended
	Sep. 30, 2013 bbl
Sell (Short) Contracts [Member] | Crude Oil Futures [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	335
Weighted average contract price per gal	103.01
Sell (Short) Contracts [Member] | Crude oil LLSWTI swap [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	110
Weighted average contract price per gal	0.09
Sell (Short) Contracts [Member] | Diesel Futures [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	39
Weighted average contract price per gal	3.02
Sell (Short) Contracts [Member] | Fuel Oil Futures [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	898
Weighted average contract price per gal	92.81
Sell (Short) Contracts [Member] | Crude Oil Options [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	315
Underlying, Derivative	1.47
Sell (Short) Contracts [Member] | Diesel Options [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	30
Underlying, Derivative	2.50
Buy (Long) Contracts [Member] | Crude Oil Futures [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	75
Weighted average contract price per gal	103.47
Buy (Long) Contracts [Member] | Crude oil LLSWTI swap [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	60
Weighted average contract price per gal	25.25
Buy (Long) Contracts [Member] | Diesel Futures [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	22
Weighted average contract price per gal	2.97
Buy (Long) Contracts [Member] | Fuel Oil Futures [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	0
Weighted average contract price per gal	0.00
Buy (Long) Contracts [Member] | Crude Oil Options [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	95
Underlying, Derivative	0.29
Buy (Long) Contracts [Member] | Diesel Options [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	0
Underlying, Derivative	0