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Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues
Oil, natural gas and NGL	$ 1,420,879us-gaap_OilAndGasSalesRevenue	$ 1,820,278us-gaap_OilAndGasSalesRevenue	$ 1,759,282us-gaap_OilAndGasSalesRevenue
Drilling and services	76,088us-gaap_RevenueOilAndGasServices	66,586us-gaap_RevenueOilAndGasServices	116,633us-gaap_RevenueOilAndGasServices
Midstream and marketing	55,658us-gaap_GasGatheringTransportationMarketingAndProcessingRevenue	58,304us-gaap_GasGatheringTransportationMarketingAndProcessingRevenue	40,486us-gaap_GasGatheringTransportationMarketingAndProcessingRevenue
Construction contract	0us-gaap_ConstructionRevenue	23,349us-gaap_ConstructionRevenue	0us-gaap_ConstructionRevenue
Other	6,133us-gaap_OtherOperatingIncome	14,871us-gaap_OtherOperatingIncome	18,241us-gaap_OtherOperatingIncome
Total revenues	1,558,758us-gaap_Revenues	1,983,388us-gaap_Revenues	1,934,642us-gaap_Revenues
Expenses
Production	346,088us-gaap_LeaseOperatingExpense	516,427us-gaap_LeaseOperatingExpense	477,154us-gaap_LeaseOperatingExpense
Production taxes	31,731us-gaap_ProductionTaxExpense	32,292us-gaap_ProductionTaxExpense	47,210us-gaap_ProductionTaxExpense
Cost of sales	56,155us-gaap_CostOfGoodsAndServicesSold	57,118us-gaap_CostOfGoodsAndServicesSold	68,227us-gaap_CostOfGoodsAndServicesSold
Midstream and marketing	49,905us-gaap_GasGatheringTransportationMarketingAndProcessingCosts	53,644us-gaap_GasGatheringTransportationMarketingAndProcessingCosts	39,669us-gaap_GasGatheringTransportationMarketingAndProcessingCosts
Construction contract	0us-gaap_ContractRevenueCost	23,349us-gaap_ContractRevenueCost	0us-gaap_ContractRevenueCost
Depreciation and depletion—oil and natural gas	434,295sd_ResultsOfOperationsDepreciationAndDepletion	567,732sd_ResultsOfOperationsDepreciationAndDepletion	568,029sd_ResultsOfOperationsDepreciationAndDepletion
Depreciation and amortization—other	59,636us-gaap_OtherDepreciationAndAmortization	62,136us-gaap_OtherDepreciationAndAmortization	60,805us-gaap_OtherDepreciationAndAmortization
Accretion of asset retirement obligations	9,092us-gaap_ResultsOfOperationsAccretionOfAssetRetirementObligations	36,777us-gaap_ResultsOfOperationsAccretionOfAssetRetirementObligations	28,996us-gaap_ResultsOfOperationsAccretionOfAssetRetirementObligations
Impairment	192,768us-gaap_AssetImpairmentCharges	26,280us-gaap_AssetImpairmentCharges	316,004us-gaap_AssetImpairmentCharges
General and administrative	113,991us-gaap_OtherGeneralAndAdministrativeExpense	207,920us-gaap_OtherGeneralAndAdministrativeExpense	241,682us-gaap_OtherGeneralAndAdministrativeExpense
Employee termination benefits	8,874us-gaap_PostemploymentBenefitsPeriodExpense	122,505us-gaap_PostemploymentBenefitsPeriodExpense	0us-gaap_PostemploymentBenefitsPeriodExpense
(Gain) loss on derivative contracts	(334,011)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	47,123us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	(241,419)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
Loss on sale of assets	10us-gaap_GainLossOnSaleOfPropertyPlantEquipment	399,086us-gaap_GainLossOnSaleOfPropertyPlantEquipment	3,089us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Total expenses	968,534us-gaap_CostsAndExpenses	2,152,389us-gaap_CostsAndExpenses	1,609,446us-gaap_CostsAndExpenses
Income (loss) from operations	590,224us-gaap_OperatingIncomeLoss	(169,001)us-gaap_OperatingIncomeLoss	325,196us-gaap_OperatingIncomeLoss
Other income (expense)
Interest expense	(244,109)us-gaap_InterestAndDebtExpense	(270,234)us-gaap_InterestAndDebtExpense	(303,349)us-gaap_InterestAndDebtExpense
Bargain purchase gain	0us-gaap_BusinessCombinationBargainPurchaseGainRecognizedAmount	0us-gaap_BusinessCombinationBargainPurchaseGainRecognizedAmount	122,696us-gaap_BusinessCombinationBargainPurchaseGainRecognizedAmount
Loss on extinguishment of debt	0us-gaap_GainsLossesOnExtinguishmentOfDebt	(82,005)us-gaap_GainsLossesOnExtinguishmentOfDebt	(3,075)us-gaap_GainsLossesOnExtinguishmentOfDebt
Other income, net	3,490us-gaap_OtherNonoperatingIncomeExpense	12,445us-gaap_OtherNonoperatingIncomeExpense	4,741us-gaap_OtherNonoperatingIncomeExpense
Total other expense	(240,619)us-gaap_NonoperatingIncomeExpense	(339,794)us-gaap_NonoperatingIncomeExpense	(178,987)us-gaap_NonoperatingIncomeExpense
Income (loss) before income taxes	349,605us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	(508,795)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	146,209us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income tax (benefit) expense	(2,293)us-gaap_IncomeTaxExpenseBenefit	5,684us-gaap_IncomeTaxExpenseBenefit	(100,362)us-gaap_IncomeTaxExpenseBenefit
Net income (loss)	351,898us-gaap_ProfitLoss	(514,479)us-gaap_ProfitLoss	246,571us-gaap_ProfitLoss
Less: net income attributable to noncontrolling interest	98,613us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	39,410us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	105,000us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Net income (loss) attributable to SandRidge Energy, Inc.	253,285us-gaap_NetIncomeLoss	(553,889)us-gaap_NetIncomeLoss	141,571us-gaap_NetIncomeLoss
Preferred stock dividends	50,025us-gaap_PreferredStockDividendsIncomeStatementImpact	55,525us-gaap_PreferredStockDividendsIncomeStatementImpact	55,525us-gaap_PreferredStockDividendsIncomeStatementImpact
Income available (loss applicable) to SandRidge Energy, Inc. common stockholders	$ 203,260us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic	$ (609,414)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic	$ 86,046us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Earnings (loss) per share
Basic (in dollars per share)	$ 0.42us-gaap_EarningsPerShareBasic	$ (1.27)us-gaap_EarningsPerShareBasic	$ 0.19us-gaap_EarningsPerShareBasic
Diluted (in dollars per share)	$ 0.42us-gaap_EarningsPerShareDiluted	$ (1.27)us-gaap_EarningsPerShareDiluted	$ 0.19us-gaap_EarningsPerShareDiluted
Weighted average number of common shares outstanding
Basic (in shares)	479,644us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	481,148us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	453,595us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted (in shares)	499,743us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	481,148us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	456,015us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding

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