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Supplemental Information on Oil and Natural Gas Producing Activities - Calculation of Weighted Average Per Unit Prices (Unaudited) (Details) | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Extractive Industries [Abstract] |  |  |
Oil (per Bbl) | 91.65 | 85.77 | 66.93
Natural gas (per Mcf) | 2.29 | 4.06 | 3.80

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- Definition Based upon 12-month average market prices per Mcf at year-end adjusted for fixed or determinable contracts that are in existence at year-end. + References No definition available. + Details
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Namespace Prefix: | sd_
Data Type: | us-types:perUnitItemType
Balance Type: | na
Period Type: | duration

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- Definition Based upon 12-month average market prices per barrel at year-end adjusted for fixed or determinable contracts that are in existence at year-end. + References No definition available. + Details
Name: | sd_WeightedAverageOilPrice
Namespace Prefix: | sd_
Data Type: | us-types:perUnitItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_ExtractiveIndustriesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration