|
Natural Gas and Oil Property Divestitures - VPP Volume Remaining to Be Delivered Table (Details)
|
6 Months Ended | 6 Months Ended | 6 Months Ended | 6 Months Ended | 6 Months Ended | 6 Months Ended | 6 Months Ended | 6 Months Ended | 6 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2014
Mcfe
|
Jun. 30, 2014
Reserve Volume Remaining [Member]
Mcfe
|
Jun. 30, 2014
Natural Gas [Member]
Mcf
|
Jun. 30, 2014
Natural Gas [Member]
Reserve Volume Remaining [Member]
Mcf
|
Jun. 30, 2014
Oil [Member]
MBbls
|
Jun. 30, 2014
Oil [Member]
Reserve Volume Remaining [Member]
MBbls
|
Jun. 30, 2014
NGL Reserves [Member]
MBbls
|
Jun. 30, 2014
NGL Reserves [Member]
Reserve Volume Remaining [Member]
MBbls
|
Jun. 30, 2014
VPP 10 Anadarko Basin Granite Wash [Member]
Reserve Volume Remaining [Member]
Mcfe
|
Jun. 30, 2014
VPP 10 Anadarko Basin Granite Wash [Member]
Natural Gas [Member]
Reserve Volume Remaining [Member]
Mcf
|
Jun. 30, 2014
VPP 10 Anadarko Basin Granite Wash [Member]
Oil [Member]
Reserve Volume Remaining [Member]
MBbls
|
Jun. 30, 2014
VPP 10 Anadarko Basin Granite Wash [Member]
NGL Reserves [Member]
Reserve Volume Remaining [Member]
MBbls
|
May 31, 2011
VPP 9 Mid-Continent [Member]
Mcfe
|
Jun. 30, 2014
VPP 9 Mid-Continent [Member]
Reserve Volume Remaining [Member]
Mcfe
|
May 31, 2011
VPP 9 Mid-Continent [Member]
Natural Gas [Member]
Mcf
|
Jun. 30, 2014
VPP 9 Mid-Continent [Member]
Natural Gas [Member]
Reserve Volume Remaining [Member]
Mcf
|
May 31, 2011
VPP 9 Mid-Continent [Member]
Oil [Member]
MBbls
|
Jun. 30, 2014
VPP 9 Mid-Continent [Member]
Oil [Member]
Reserve Volume Remaining [Member]
MBbls
|
May 31, 2011
VPP 9 Mid-Continent [Member]
NGL Reserves [Member]
MBbls
|
Jun. 30, 2014
VPP 9 Mid-Continent [Member]
NGL Reserves [Member]
Reserve Volume Remaining [Member]
MBbls
|
Sep. 30, 2010
VPP 8 Barnett Shale [Member]
Mcfe
|
Jun. 30, 2014
VPP 8 Barnett Shale [Member]
Reserve Volume Remaining [Member]
Mcfe
|
Sep. 30, 2010
VPP 8 Barnett Shale [Member]
Natural Gas [Member]
Mcf
|
Jun. 30, 2014
VPP 8 Barnett Shale [Member]
Natural Gas [Member]
Reserve Volume Remaining [Member]
Mcf
|
Sep. 30, 2010
VPP 8 Barnett Shale [Member]
Oil [Member]
MBbls
|
Jun. 30, 2014
VPP 8 Barnett Shale [Member]
Oil [Member]
Reserve Volume Remaining [Member]
MBbls
|
Sep. 30, 2010
VPP 8 Barnett Shale [Member]
NGL Reserves [Member]
MBbls
|
Jun. 30, 2014
VPP 8 Barnett Shale [Member]
NGL Reserves [Member]
Reserve Volume Remaining [Member]
MBbls
|
Feb. 28, 2010
VPP 6 East Texas and Texas Gulf Coast [Member]
Mcfe
|
Jun. 30, 2014
VPP 6 East Texas and Texas Gulf Coast [Member]
Reserve Volume Remaining [Member]
Mcfe
|
Feb. 28, 2010
VPP 6 East Texas and Texas Gulf Coast [Member]
Natural Gas [Member]
Mcf
|
Jun. 30, 2014
VPP 6 East Texas and Texas Gulf Coast [Member]
Natural Gas [Member]
Reserve Volume Remaining [Member]
Mcf
|
Feb. 28, 2010
VPP 6 East Texas and Texas Gulf Coast [Member]
Oil [Member]
MBbls
|
Jun. 30, 2014
VPP 6 East Texas and Texas Gulf Coast [Member]
Oil [Member]
Reserve Volume Remaining [Member]
MBbls
|
Feb. 28, 2010
VPP 6 East Texas and Texas Gulf Coast [Member]
NGL Reserves [Member]
MBbls
|
Jun. 30, 2014
VPP 6 East Texas and Texas Gulf Coast [Member]
NGL Reserves [Member]
Reserve Volume Remaining [Member]
MBbls
|
Aug. 31, 2009
VPP 5 South Texas [Member]
Mcfe
|
Jun. 30, 2014
VPP 5 South Texas [Member]
Reserve Volume Remaining [Member]
Mcfe
|
Aug. 31, 2009
VPP 5 South Texas [Member]
Natural Gas [Member]
Mcf
|
Jun. 30, 2014
VPP 5 South Texas [Member]
Natural Gas [Member]
Reserve Volume Remaining [Member]
Mcf
|
Aug. 31, 2009
VPP 5 South Texas [Member]
Oil [Member]
MBbls
|
Jun. 30, 2014
VPP 5 South Texas [Member]
Oil [Member]
Reserve Volume Remaining [Member]
MBbls
|
Aug. 31, 2009
VPP 5 South Texas [Member]
NGL Reserves [Member]
MBbls
|
Jun. 30, 2014
VPP 5 South Texas [Member]
NGL Reserves [Member]
Reserve Volume Remaining [Member]
MBbls
|
Dec. 31, 2008
VPP 4 Anadarko and Arkoma Basins [Member]
Mcfe
|
Jun. 30, 2014
VPP 4 Anadarko and Arkoma Basins [Member]
Reserve Volume Remaining [Member]
Mcfe
|
Dec. 31, 2008
VPP 4 Anadarko and Arkoma Basins [Member]
Natural Gas [Member]
Mcf
|
Jun. 30, 2014
VPP 4 Anadarko and Arkoma Basins [Member]
Natural Gas [Member]
Reserve Volume Remaining [Member]
Mcf
|
Dec. 31, 2008
VPP 4 Anadarko and Arkoma Basins [Member]
Oil [Member]
MBbls
|
Jun. 30, 2014
VPP 4 Anadarko and Arkoma Basins [Member]
Oil [Member]
Reserve Volume Remaining [Member]
MBbls
|
Dec. 31, 2008
VPP 4 Anadarko and Arkoma Basins [Member]
NGL Reserves [Member]
MBbls
|
Jun. 30, 2014
VPP 4 Anadarko and Arkoma Basins [Member]
NGL Reserves [Member]
Reserve Volume Remaining [Member]
MBbls
|
Aug. 31, 2008
VPP 3 Anadarko Basin [Member]
Mcfe
|
Jun. 30, 2014
VPP 3 Anadarko Basin [Member]
Reserve Volume Remaining [Member]
Mcfe
|
Aug. 31, 2008
VPP 3 Anadarko Basin [Member]
Natural Gas [Member]
Mcf
|
Jun. 30, 2014
VPP 3 Anadarko Basin [Member]
Natural Gas [Member]
Reserve Volume Remaining [Member]
Mcf
|
Aug. 31, 2008
VPP 3 Anadarko Basin [Member]
Oil [Member]
MBbls
|
Jun. 30, 2014
VPP 3 Anadarko Basin [Member]
Oil [Member]
Reserve Volume Remaining [Member]
MBbls
|
Aug. 31, 2008
VPP 3 Anadarko Basin [Member]
NGL Reserves [Member]
MBbls
|
Jun. 30, 2014
VPP 3 Anadarko Basin [Member]
NGL Reserves [Member]
Reserve Volume Remaining [Member]
MBbls
|
May 31, 2008
VPP 2 Texas, Oklahoma and Kansas [Member]
Mcfe
|
Jun. 30, 2014
VPP 2 Texas, Oklahoma and Kansas [Member]
Reserve Volume Remaining [Member]
Mcfe
|
May 31, 2008
VPP 2 Texas, Oklahoma and Kansas [Member]
Natural Gas [Member]
Mcf
|
Jun. 30, 2014
VPP 2 Texas, Oklahoma and Kansas [Member]
Natural Gas [Member]
Reserve Volume Remaining [Member]
Mcf
|
May 31, 2008
VPP 2 Texas, Oklahoma and Kansas [Member]
Oil [Member]
MBbls
|
Jun. 30, 2014
VPP 2 Texas, Oklahoma and Kansas [Member]
Oil [Member]
Reserve Volume Remaining [Member]
MBbls
|
May 31, 2008
VPP 2 Texas, Oklahoma and Kansas [Member]
NGL Reserves [Member]
MBbls
|
Jun. 30, 2014
VPP 2 Texas, Oklahoma and Kansas [Member]
NGL Reserves [Member]
Reserve Volume Remaining [Member]
MBbls
|
Dec. 31, 2007
VPP 1 Kentucky and West Virginia [Member]
Mcfe
|
Jun. 30, 2014
VPP 1 Kentucky and West Virginia [Member]
Reserve Volume Remaining [Member]
Mcfe
|
Dec. 31, 2007
VPP 1 Kentucky and West Virginia [Member]
Natural Gas [Member]
Mcf
|
Jun. 30, 2014
VPP 1 Kentucky and West Virginia [Member]
Natural Gas [Member]
Reserve Volume Remaining [Member]
Mcf
|
Dec. 31, 2007
VPP 1 Kentucky and West Virginia [Member]
Oil [Member]
MBbls
|
Jun. 30, 2014
VPP 1 Kentucky and West Virginia [Member]
Oil [Member]
Reserve Volume Remaining [Member]
MBbls
|
Dec. 31, 2007
VPP 1 Kentucky and West Virginia [Member]
NGL Reserves [Member]
MBbls
|
Jun. 30, 2014
VPP 1 Kentucky and West Virginia [Member]
NGL Reserves [Member]
Reserve Volume Remaining [Member]
MBbls
|
|
| Acquisitions, Divestitures, Joint Ventures, VPP's [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Term remaining (in months) | 92 months | 80 months | 14 months | 67 months | 31 months | 30 months | 61 months | 58 months | 102 months | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Proved Developed Reserves (Volume) | 1,216,000,000,000 | 383,800,000,000 | 5,700,000 | 2,600,000 | 14,000,000 | 7,400,000 | 43,100,000,000 | 1,500,000 | 5,300,000 | 138,000,000,000 | 80,800,000,000 | 1,700,000 | 900,000 | 4,800,000 | 2,100,000 | 390,000,000,000 | 65,700,000,000 | 0 | 0 | 0 | 0 | 44,000,000,000 | 19,200,000,000 | 300,000 | 100,000 | 0 | 0 | 67,000,000,000 | 13,500,000,000 | 200,000 | 0 | 0 | 0 | 95,000,000,000 | 19,700,000,000 | 500,000 | 100,000 | 0 | 0 | 93,000,000,000 | 27,400,000,000 | 0 | 0 | 0 | 0 | 94,000,000,000 | 16,000,000,000 | 0 | 0 | 0 | 0 | 208,000,000,000 | 98,400,000,000 | 0 | 0 | 0 | 0 | |||||||||||||||||||
| Proved Developed Reserves (Energy) | 1,334,000,000,000 | 444,700,000,000 | 83,900,000,000 | 177,000,000,000 | 99,200,000,000 | 390,000,000,000 | 65,700,000,000 | 46,000,000,000 | 20,000,000,000 | 68,000,000,000 | 13,800,000,000 | 98,000,000,000 | 20,300,000,000 | 93,000,000,000 | 27,400,000,000 | 94,000,000,000 | 16,000,000,000 | 208,000,000,000 | 98,400,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||