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Supplemental Information On Oil And Gas Exploration And Production Activities (Narrative) (Details) (USD $)
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12 Months Ended | 12 Months Ended | ||||||||||
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Dec. 31, 2013
MBoe
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Dec. 31, 2012
MBoe
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2011
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Dec. 31, 2013
Diamondback Energy LLC [Member]
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Jun. 30, 2012
Diamondback Energy LLC [Member]
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Dec. 31, 2013
Diamondback Energy, Inc [Member]
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Dec. 31, 2012
Diamondback Energy, Inc [Member]
MBoe
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Dec. 31, 2011
Diamondback Energy, Inc [Member]
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Dec. 31, 2013
Oil [Member]
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Dec. 31, 2013
Natural Gas Liquids [Member]
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| Reserve Quantities [Line Items] | ||||||||||||
| Ownership interest | 7.20% | 21.40% | 7.20% | 21.40% | ||||||||
| Future cash flows | $ 1,657,708,000 | $ 954,833,000 | $ 1,594,050,000 | $ 331,505,000 | $ 592,669,000 | $ 0 | ||||||
| Future development and abandonment costs | (272,500,000) | (159,113,000) | (306,810,000) | (37,229,000) | (115,869,000) | 0 | ||||||
| Future production costs | (274,428,000) | (147,024,000) | (295,383,000) | (58,096,000) | (165,553,000) | 0 | ||||||
| Future production taxes | (78,647,000) | (89,175,000) | (124,739,000) | (22,925,000) | (30,122,000) | 0 | ||||||
| Future income taxes | (172,691,000) | (114,867,000) | (229,649,000) | (48,547,000) | (71,669,000) | 0 | ||||||
| Future net cash flows | 859,442,000 | 444,654,000 | 637,469,000 | 164,708,000 | 209,456,000 | 0 | ||||||
| 10% discount to reflect timing of cash flows | (280,976,000) | (96,013,000) | (260,788,000) | (94,462,000) | (130,871,000) | 0 | ||||||
| Standardized measure of discounted future net cash flows | 578,466,000 | 348,641,000 | 376,681,000 | 70,246,000 | 78,585,000 | 0 | ||||||
| Price per unit (usd per MMbls or MMcf) | 3.67 | 91.32 | 2.76 | 4.12 | 96.19 | 96.78 | 41.23 | |||||
| Increase (decrease) in reserve during the period | 27,805,000 | 6,675,000 | 6,675,000 | (12,564,000) | ||||||||
| Decrease in reserves relating to change in estimates | 442,000 | 442,000 | ||||||||||
| Future development costs estimated to be spend in 2014 | 135,400,000 | |||||||||||
| Future development costs estimated to be spend in 2015 | 68,700,000 | |||||||||||
| Future development costs estimated to be spend in 2016 | $ 8,500,000 | |||||||||||
| X | ||||||||||
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- Definition
Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production Taxes No definition available.
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| X | ||||||||||
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- Definition
Future development costs estimated to be spent in year one No definition available.
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| X | ||||||||||
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- Definition
Future development costs estimated to be spent in year three No definition available.
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| X | ||||||||||
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- Definition
Future development costs estimated to be spent in year two No definition available.
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| X | ||||||||||
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- Definition
Proved Developed And Undeveloped Reserve Increase (Decrease) In Reserves No definition available.
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| X | ||||||||||
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- Definition
Proved Developed And Undeveloped Reserve, Revisions Of Previous Estimates No definition available.
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| X | ||||||||||
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- Definition
The revenues derived from sales of oil or gas in each geographic area during the reporting period divided by the number of barrels of oil produced or thousands of cubic feet of gas produced. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This is the amount that is derived from using a discount rate of ten percent a year to reflect the timing of the future net cash flows relating to proved oil and gas reserves. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of estimated future cash inflows from sale of proved oil and gas reserves. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of estimated future cost to be incurred in developing proved oil and gas reserves. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of estimated future income tax expense to be incurred based on the future income less future expense derived from production and sale of proved oil and gas reserves. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of estimated net future cash inflows, after subtracting future development and production costs and future income tax expenses, from sale of proved oil and gas reserves. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of estimated future cost to be incurred in producing proved oil and gas reserves. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This amount is the future net cash flows less the computed discount. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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