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Natural Gas and Oil Property Divestitures - VPP Transactions Table (Details) (USD $)
In Millions, unless otherwise specified |
6 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | |||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2014
Mcfe
|
Jun. 30, 2014
Natural Gas [Member]
Mcf
|
Jun. 30, 2014
Oil [Member]
MBbls
|
Jun. 30, 2014
NGL Reserves [Member]
MBbls
|
Mar. 31, 2012
VPP 10 Aradarko Basin Granite Wash [Member]
Mcfe
|
Mar. 31, 2012
VPP 10 Aradarko Basin Granite Wash [Member]
Natural Gas [Member]
Mcf
|
Mar. 31, 2012
VPP 10 Aradarko Basin Granite Wash [Member]
Oil [Member]
MBbls
|
Mar. 31, 2012
VPP 10 Aradarko Basin Granite Wash [Member]
NGL Reserves [Member]
MBbls
|
Jun. 30, 2011
VPP 9 Mid-Continent [Member]
|
May 31, 2011
VPP 9 Mid-Continent [Member]
Mcfe
|
May 31, 2011
VPP 9 Mid-Continent [Member]
Natural Gas [Member]
Mcf
|
May 31, 2011
VPP 9 Mid-Continent [Member]
Oil [Member]
MBbls
|
May 31, 2011
VPP 9 Mid-Continent [Member]
NGL Reserves [Member]
MBbls
|
Sep. 30, 2010
VPP 8 Barnett Shale [Member]
Mcfe
|
Sep. 30, 2010
VPP 8 Barnett Shale [Member]
Natural Gas [Member]
Mcf
|
Sep. 30, 2010
VPP 8 Barnett Shale [Member]
Oil [Member]
MBbls
|
Sep. 30, 2010
VPP 8 Barnett Shale [Member]
NGL Reserves [Member]
MBbls
|
Mar. 31, 2010
VPP 6 East Texas and Texas Gulf Coast [Member]
|
Feb. 28, 2010
VPP 6 East Texas and Texas Gulf Coast [Member]
Mcfe
|
Feb. 28, 2010
VPP 6 East Texas and Texas Gulf Coast [Member]
Natural Gas [Member]
Mcf
|
Feb. 28, 2010
VPP 6 East Texas and Texas Gulf Coast [Member]
Oil [Member]
MBbls
|
Feb. 28, 2010
VPP 6 East Texas and Texas Gulf Coast [Member]
NGL Reserves [Member]
MBbls
|
Sep. 30, 2009
VPP 5 South Texas [Member]
|
Aug. 31, 2009
VPP 5 South Texas [Member]
Mcfe
|
Aug. 31, 2009
VPP 5 South Texas [Member]
Natural Gas [Member]
Mcf
|
Aug. 31, 2009
VPP 5 South Texas [Member]
Oil [Member]
MBbls
|
Aug. 31, 2009
VPP 5 South Texas [Member]
NGL Reserves [Member]
MBbls
|
Dec. 31, 2008
VPP 4 Anadarko and Arkoma Basins [Member]
Mcfe
|
Dec. 31, 2008
VPP 4 Anadarko and Arkoma Basins [Member]
Natural Gas [Member]
Mcf
|
Dec. 31, 2008
VPP 4 Anadarko and Arkoma Basins [Member]
Oil [Member]
MBbls
|
Dec. 31, 2008
VPP 4 Anadarko and Arkoma Basins [Member]
NGL Reserves [Member]
MBbls
|
Sep. 30, 2008
VPP 3 Anadarko Basin [Member]
|
Aug. 31, 2008
VPP 3 Anadarko Basin [Member]
Mcfe
|
Aug. 31, 2008
VPP 3 Anadarko Basin [Member]
Natural Gas [Member]
Mcf
|
Aug. 31, 2008
VPP 3 Anadarko Basin [Member]
Oil [Member]
MBbls
|
Aug. 31, 2008
VPP 3 Anadarko Basin [Member]
NGL Reserves [Member]
MBbls
|
Jun. 30, 2008
VPP 2 Texas, Oklahoma and Kansas [Member]
|
May 31, 2008
VPP 2 Texas, Oklahoma and Kansas [Member]
Mcfe
|
May 31, 2008
VPP 2 Texas, Oklahoma and Kansas [Member]
Natural Gas [Member]
Mcf
|
May 31, 2008
VPP 2 Texas, Oklahoma and Kansas [Member]
Oil [Member]
MBbls
|
May 31, 2008
VPP 2 Texas, Oklahoma and Kansas [Member]
NGL Reserves [Member]
MBbls
|
Dec. 31, 2007
VPP 1 Kentucky and West Virginia [Member]
Mcfe
|
Dec. 31, 2007
VPP 1 Kentucky and West Virginia [Member]
Natural Gas [Member]
Mcf
|
Dec. 31, 2007
VPP 1 Kentucky and West Virginia [Member]
Oil [Member]
MBbls
|
Dec. 31, 2007
VPP 1 Kentucky and West Virginia [Member]
NGL Reserves [Member]
MBbls
|
|
| Business Combination, Separately Recognized Transactions [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Cash Proceeds from Volumetric Production Payment (VPP) | $ 6,031 | $ 744 | $ 853 | $ 1,150 | $ 180 | $ 370 | $ 412 | $ 600 | $ 622 | $ 1,100 | |||||||||||||||||||||||||||||||||||
| Proved Developed Reserves (Volume) | 1,216,000,000,000 | 5,700,000 | 14,000,000 | 87,000,000,000 | 3,000,000 | 9,200,000 | 138,000,000,000 | 1,700,000 | 4,800,000 | 390,000,000,000 | 0 | 0 | 44,000,000,000 | 300,000 | 0 | 67,000,000,000 | 200,000 | 0 | 95,000,000,000 | 500,000 | 0 | 93,000,000,000 | 0 | 0 | 94,000,000,000 | 0 | 0 | 208,000,000,000 | 0 | 0 | |||||||||||||||
| Proved Developed Reserves (Energy) | 1,334,000,000,000 | 160,000,000,000 | 177,000,000,000 | 390,000,000,000 | 46,000,000,000 | 68,000,000,000 | 98,000,000,000 | 93,000,000,000 | 94,000,000,000 | 208,000,000,000 | |||||||||||||||||||||||||||||||||||