Derivative Activities (Notional Volumes Of Commodity Derivative Contracts) (Details)	9 Months Ended
	Sep. 30, 2014
WTI Swaps - Oil Oct 1 - Dec 31, 2014 [Member]
Derivative [Line Items]
Hedged volume per day	6,709.00
Average price	95.30
WTI Swaps - Oil 2015 [Member]
Derivative [Line Items]
Hedged volume per day	7,356.00
Average price	93.74
WTI Swaps - Oil 2016 [Member]
Derivative [Line Items]
Hedged volume per day	6,293.00
Average price	90.03
WTI Swaps - Oil 2017 [Member]
Derivative [Line Items]
Hedged volume per day	5,547.00
Average price	86.23
LLS Swap - Oil Oct 1 - Dec 31, 2014 [Member]
Derivative [Line Items]
Hedged volume per day	3,000.00
Average price	99.62
WTS/WTI Basis - Oil Oct 1 - Dec 31, 2014 [Member]
Derivative [Line Items]
Hedged volume per day	2,400.00	[1]
Average price	(2.10)	[1]
WTI Collars - Oil Oct 1 - Dec 31, 2014 [Member]
Derivative [Line Items]
Hedged volume per day	425.00
Average floor price	90.00
Average ceiling price	106.50
WTI Collars - Oil 2015 [Member]
Derivative [Line Items]
Hedged volume per day	1,025.00
Average floor price	90.00
Average ceiling price	110.00
WTI Collars - Oil 2016 [Member]
Derivative [Line Items]
Hedged volume per day	1,500.00
Average floor price	80.00
Average ceiling price	102.00
Henry Hub Swaps - Natural Gas Oct 1 - Dec 31, 2014 [Member]
Derivative [Line Items]
Hedged volume per day	25,300.00
Average price	6.13
Henry Hub Swaps - Natural Gas 2015 [Member]
Derivative [Line Items]
Hedged volume per day	7,191.00
Average price	5.34
Henry Hub Swaps - Natural Gas 2016 [Member]
Derivative [Line Items]
Hedged volume per day	11,350.00
Average price	4.27
Henry Hub Swaps - Natural Gas 2017 [Member]
Derivative [Line Items]
Hedged volume per day	10,445.00
Average price	4.47
Henry Hub Basis Swaps - Natural Gas Oct 1 - Dec 31, 2014 [Member]
Derivative [Line Items]
Hedged volume per day	17,046.00	[2]
Average price	(0.19)	[2]
Henry Hub Basis Swaps - Natural Gas 2015 [Member]
Derivative [Line Items]
Hedged volume per day	14,400.00	[2]
Average price	(0.19)	[2]
Henry Hub Collars - Natural Gas Oct 1 - Dec 31, 2014 [Member]
Derivative [Line Items]
Hedged volume per day	4,946.00
Average floor price	5.74
Average ceiling price	7.51
Henry Hub Collars - Natural Gas 2015 [Member]
Derivative [Line Items]
Hedged volume per day	18,000.00
Average floor price	5.00
Average ceiling price	7.48
Henry Hub Collars - Natural Gas 2016 [Member]
Derivative [Line Items]
Hedged volume per day	630.00
Average floor price	4.00
Average ceiling price	5.55
Henry Hub Collars - Natural Gas 2017 [Member]
Derivative [Line Items]
Hedged volume per day	595.00
Average floor price	4.00
Average ceiling price	6.15
Henry Hub Puts - Natural Gas 2015 [Member]
Derivative [Line Items]
Hedged volume per day	420.00
Average price	4.00
Henry Hub Puts - Natural Gas 2016 [Member]
Derivative [Line Items]
Hedged volume per day	11,350.00
Average price	4.00
Henry Hub Puts - Natural Gas 2017 [Member]
Derivative [Line Items]
Hedged volume per day	10,445.00
Average price	4.00

[1] Our oil basis swaps are used to hedge the downward differential between West Texas Intermediate and West Texas Sour.

[2] Our natural gas basis swaps are used to hedge the downward differential between Henry Hub and various price points.