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Supplemental Information on Oil and Natural Gas Producing Activities - Narrative (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
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Dec. 31, 2014 MMBoe | Dec. 31, 2013 MBbls | Dec. 31, 2012 MBbls | Dec. 31, 2011
Reserve Quantities [Line Items] |  |  |  |  |  |  |
Percentage of proved reserves estimated by the Company | 13.90%sd_PercentageProvedReservesEstimateCompany |  |  |  |  |  |
Standardized measure of discounted future net cash flows | $ 4,087,752 us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves | [1],[2] | 4,017,611 us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves | [1],[2] | 5,840,368 us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves | [1],[2] | $ 5,216,337 us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves
Acquisitions of new reserves (MMBoe) | 3.5 us-gaap_ProvedDevelopedAndUndevelopedReservePurchaseOfMineralInPlaceEnergy |  |  |  |  |  |
Oil Reserves |  |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |  |
Change in proved reserves (in MBbls for Oil/MMcf for Natural Gas) |  |  |  |  | 67,900 sd_ChangeInProvedReserves / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  |
Revisions of previous estimates (in MBbls for Oil and NGLs/MMcf for Natural Gas) | (18,687)us-gaap_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  | (13,969)us-gaap_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  | (37,394)us-gaap_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  |
Extensions and discoveries (in MBbls for Oil and NGLs/MMcf for Natural Gas) | 37,603 us-gaap_ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  | 40,570 us-gaap_ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  | 89,656 us-gaap_ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  |
Proved developed and undeveloped reserves, production (in MBbls for Oil/MMcf for Natural Gas) | (10,876)us-gaap_ProvedDevelopedAndUndevelopedReservesProduction / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  | (14,279)us-gaap_ProvedDevelopedAndUndevelopedReservesProduction / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  | (15,868)us-gaap_ProvedDevelopedAndUndevelopedReservesProduction / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember |  |
Natural Gas Reserves |  |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |  |
Change in proved reserves (in MBbls for Oil/MMcf for Natural Gas) |  |  |  |  | 60,500 sd_ChangeInProvedReserves / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember |  |
Revisions of previous estimates (in MBbls for Oil and NGLs/MMcf for Natural Gas) | 167,589 us-gaap_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | [3] | (53,432)us-gaap_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | [3] | (538,214)us-gaap_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | [3] |
Extensions and discoveries (in MBbls for Oil and NGLs/MMcf for Natural Gas) | 467,185 us-gaap_ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | [3] | 359,918 us-gaap_ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | [3] | 489,302 us-gaap_ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | [3] |
Proved developed and undeveloped reserves, production (in MBbls for Oil/MMcf for Natural Gas) | (85,697)us-gaap_ProvedDevelopedAndUndevelopedReservesProduction / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | [3] | (103,233)us-gaap_ProvedDevelopedAndUndevelopedReservesProduction / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | [3] | (93,549)us-gaap_ProvedDevelopedAndUndevelopedReservesProduction / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember | [3] |
Natural Gas Liquids |  |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |  |
Change in proved reserves (in MBbls for Oil/MMcf for Natural Gas) |  |  |  |  | 40,900 sd_ChangeInProvedReserves / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasLiquidsReservesMember |  |
Revisions of previous estimates (in MBbls for Oil and NGLs/MMcf for Natural Gas) | 11,103 us-gaap_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasLiquidsReservesMember |  | 3,717 us-gaap_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasLiquidsReservesMember |  | 15,098 us-gaap_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasLiquidsReservesMember |  |
Extensions and discoveries (in MBbls for Oil and NGLs/MMcf for Natural Gas) | 27,500 us-gaap_ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasLiquidsReservesMember |  | 18,686 us-gaap_ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasLiquidsReservesMember |  | 27,259 us-gaap_ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasLiquidsReservesMember |  |
Proved developed and undeveloped reserves, production (in MBbls for Oil/MMcf for Natural Gas) | (3,794)us-gaap_ProvedDevelopedAndUndevelopedReservesProduction / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasLiquidsReservesMember |  | (2,291)us-gaap_ProvedDevelopedAndUndevelopedReservesProduction / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasLiquidsReservesMember |  | (2,094)us-gaap_ProvedDevelopedAndUndevelopedReservesProduction / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasLiquidsReservesMember |  |
Gulf Properties |  |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |  |
Sale of reserves in place (MMBoe) | 55.5 us-gaap_ProvedDevelopedAndUndevelopedReservesSaleOfMineralInPlaceEnergy / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = sd_GulfPropertiesMember |  |  |  |  |  |
Tertiary |  |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |  |
Sale of reserves in place (MMBoe) |  |  |  |  | 23.6 us-gaap_ProvedDevelopedAndUndevelopedReservesSaleOfMineralInPlaceEnergy / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = sd_TertiaryMember |  |
Permian Properties |  |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |  |
Proved reserves (in MMBoe) |  |  |  |  | 198.9 us-gaap_ProvedDevelopedAndUndevelopedReserveNetEnergy / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = sd_PermianPropertiesMember |  |
Proved developed reserves as a percentage of total proved reserves |  |  |  |  | 55.00%sd_ProvedDevelopedReservesAsPercentageOfTotalProvedReserves / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = sd_PermianPropertiesMember |  |
Standardized measure of discounted future net cash flows |  |  | 2,500,000 us-gaap_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = sd_PermianPropertiesMember |  |  |  |
Mid-Continent and Permian Basin | Oil Reserves |  |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |  |
Revisions of previous estimates (in MBbls for Oil and NGLs/MMcf for Natural Gas) | (2,000)us-gaap_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember / us-gaap_StatementGeographicalAxis = sd_MidContinentAndPermianBasinMember |  |  |  | (22,300)us-gaap_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember / us-gaap_StatementGeographicalAxis = sd_MidContinentAndPermianBasinMember |  |
Mid-Continent and Permian Basin | Natural Gas Reserves |  |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |  |
Extensions and discoveries (in MBbls for Oil and NGLs/MMcf for Natural Gas) |  |  |  |  | 489,302 us-gaap_ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_NaturalGasReservesMember / us-gaap_StatementGeographicalAxis = sd_MidContinentAndPermianBasinMember | [3] |
Mid-Continent |  |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |  |
Extensions and discoveries (in MMBoe) |  |  | 119.2 us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy / us-gaap_StatementGeographicalAxis = sd_MidContinentMember |  |  |  |
Mid-Continent | Oil Reserves |  |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |  |
Revisions of previous estimates (in MBbls for Oil and NGLs/MMcf for Natural Gas) | (8,000)us-gaap_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember / us-gaap_StatementGeographicalAxis = sd_MidContinentMember |  |  |  |  |  |
Permian Properties | Oil Reserves |  |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |  |
Revisions of previous estimates (in MBbls for Oil and NGLs/MMcf for Natural Gas) | (9,000)us-gaap_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease / us-gaap_ReserveQuantitiesByTypeOfReserveAxis = us-gaap_OilReservesMember / us-gaap_StatementGeographicalAxis = sd_PermianPropertiesMember |  |  |  |  |  |
[1] | Includes approximately $643.3 million, $781.6 million and $952.7 million attributable to noncontrolling interests at December 31, 2014, 2013 and 2012 respectively.
[2] | Includes approximately $643.3 million, $781.6 million and $952.7 million attributable to noncontrolling interests at December 31, 2014, 2013, and 2012 respectively.
[3] | Natural gas reserves are computed at 14.65 pounds per square inch absolute and 60 degrees Fahrenheit.

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