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Oil and Natural Gas Property Transactions - VPP Volume Remaining to Be Delivered Table (Details) - VPP 9 Mid-Continent [Member] Mcf in Millions, MMBbls in Millions, MBbls in Millions, Mcfe in Billions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 Mcfe MMBbls Mcf | May 31, 2011 Mcfe MBbls Mcf
VPP Volumes Remaining to be Delivered [Line Items] |  |
Proved Developed Reserves (Energy) | Mcfe |  | 177.0
Reserve Volume Remaining [Member] |  |
VPP Volumes Remaining to be Delivered [Line Items] |  |
Term remaining (in months) | 47 months |
Proved Developed Reserves (Energy) | Mcfe | 52.5 |
Oil [Member] |  |
VPP Volumes Remaining to be Delivered [Line Items] |  |
Proved Developed Reserves (Volume) | MBbls |  | 1.7
Oil [Member] | Reserve Volume Remaining [Member] |  |
VPP Volumes Remaining to be Delivered [Line Items] |  |
Proved Developed Reserves (Volume) | MMBbls | 0.5 |
Natural Gas [Member] |  |
VPP Volumes Remaining to be Delivered [Line Items] |  |
Proved Developed Reserves (Volume) | Mcf |  | 138,000.0
Natural Gas [Member] | Reserve Volume Remaining [Member] |  |
VPP Volumes Remaining to be Delivered [Line Items] |  |
Proved Developed Reserves (Volume) | Mcf | 42.8 |
NGL [Member] |  |
VPP Volumes Remaining to be Delivered [Line Items] |  |
Proved Developed Reserves (Volume) | MBbls |  | 4.8
NGL [Member] | Reserve Volume Remaining [Member] |  |
VPP Volumes Remaining to be Delivered [Line Items] |  |
Proved Developed Reserves (Volume) | MMBbls | 1.1 |

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- Definition Energy measure of interests in proved developed reserves of crude oil, including condensate and natural gas liquids, natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas. + References No definition available. + Details
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- Definition Net quantities of an enterprise's interests in proved developed reserves of either crude oil (including condensate and natural gas liquids), natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas as of the beginning and the end of the year. "Net" quantities of reserves include those relating to the enterprise's operating and nonoperating interests in properties. Quantities of reserves relating to royalty interests owned are included in "net" quantities if the necessary information is available to the enterprise. "Net" quantities does not include reserves relating to interests of others in properties owned by the enterprise. The unit of measure for reserve quantities is defined as "barrels" for oil and synthetic oil reserves or "cubic feet" or "cubic meters" for natural gas and synthetic gas reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61884-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61797-109447 + Details
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