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Derivatives - Narrative (Details) (USD $) | 12 Months Ended | 3 Months Ended | 1 Months Ended
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Dec. 31, 2014 Institution | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Apr. 30, 2013
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of counterparties to open derivative contracts | 9 sd_NumberOfCounterpartiesToOpenDerivativeContracts |  |  |  |  |  |  |  |  |  |  |
(Gain) loss on derivative contracts | $ (334,011,000)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet | $ 47,123,000 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet | $ (241,419,000)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet |  |  |  |  |  |  |  |  |
Interest expense | 244,109,000 us-gaap_InterestAndDebtExpense | 270,234,000 us-gaap_InterestAndDebtExpense | 303,349,000 us-gaap_InterestAndDebtExpense |  |  |  |  |  |  |  |  |
Commodity Derivatives |  |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
(Gain) loss on derivative contracts | (334,000,000)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = sd_CommodityDerivativesMember | 47,100,000 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = sd_CommodityDerivativesMember | (241,400,000)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = sd_CommodityDerivativesMember | (329,200,000)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = sd_CommodityDerivativesMember | (132,600,000)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = sd_CommodityDerivativesMember | 85,300,000 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = sd_CommodityDerivativesMember | 42,500,000 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = sd_CommodityDerivativesMember | (22,900,000)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = sd_CommodityDerivativesMember | 132,800,000 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = sd_CommodityDerivativesMember | (103,700,000)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = sd_CommodityDerivativesMember | 40,900,000 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = sd_CommodityDerivativesMember |
Commodity Derivatives | Cash |  |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
(Gain) loss on derivative contracts | 32,300,000 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = sd_CommodityDerivativesMember / us-gaap_TradingActivityByTypeAxis = us-gaap_CashMember | (800,000)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = sd_CommodityDerivativesMember / us-gaap_TradingActivityByTypeAxis = us-gaap_CashMember | (91,400,000)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = sd_CommodityDerivativesMember / us-gaap_TradingActivityByTypeAxis = us-gaap_CashMember |  |  |  |  |  |  |  |  |
Interest rate swaps |  |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  | 10,000 us-gaap_InterestAndDebtExpense / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember | 1,200,000 us-gaap_InterestAndDebtExpense / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember |  |  |  |  |  |  |  |  |
Interest rate swaps | Cash |  |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  | 2,400,000 us-gaap_InterestAndDebtExpense / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember / us-gaap_TradingActivityByTypeAxis = us-gaap_CashMember | 9,200,000 us-gaap_InterestAndDebtExpense / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember / us-gaap_TradingActivityByTypeAxis = us-gaap_CashMember |  |  |  |  |  |  |  |  |
Derivative Contracts Early Settlements | Commodity Derivatives | Cash |  |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
(Gain) loss on derivative contracts | 69,600,000 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeByNatureAxis = sd_DerivativeContractsEarlySettlementsMember / us-gaap_DerivativeInstrumentRiskAxis = sd_CommodityDerivativesMember / us-gaap_TradingActivityByTypeAxis = us-gaap_CashMember | 29,600,000 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeByNatureAxis = sd_DerivativeContractsEarlySettlementsMember / us-gaap_DerivativeInstrumentRiskAxis = sd_CommodityDerivativesMember / us-gaap_TradingActivityByTypeAxis = us-gaap_CashMember |  |  |  |  |  |  |  |  |  |
Amendment | Commodity Derivatives | Noncash |  |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
(Gain) loss on derivative contracts |  |  | 117,100,000 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeByNatureAxis = sd_AmendmentMember / us-gaap_DerivativeInstrumentRiskAxis = sd_CommodityDerivativesMember / us-gaap_TradingActivityByTypeAxis = sd_NoncashMember |  |  |  |  |  |  |  |  |
Senior Floating Rate Notes due 2014 | Fixed To Floating Interest Rate Swap Through April 1st 2013 |  |  |  |  |  |  |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Derivative, maturity date |  |  |  |  |  |  |  |  |  |  |  | Apr. 01, 2013
Derivative liability, notional amount |  |  |  |  |  |  |  |  |  |  |  | $ 350,000,000.0 us-gaap_DerivativeLiabilityNotionalAmount / us-gaap_DebtInstrumentAxis = sd_SeniorFloatingRateNotesDue2014Member / us-gaap_DerivativeByNatureAxis = sd_FixedToFloatingInterestRateSwapThroughApril1St2013Member
Derivative, fixed interest rate |  |  |  |  |  |  |  |  |  |  |  | 6.69%us-gaap_DerivativeFixedInterestRate / us-gaap_DebtInstrumentAxis = sd_SeniorFloatingRateNotesDue2014Member / us-gaap_DerivativeByNatureAxis = sd_FixedToFloatingInterestRateSwapThroughApril1St2013Member

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- Definition Number Of Counterparties To Open Derivative Contracts + References No definition available. + Details
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- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 + Details
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- Definition Nominal or face amount used to calculate payments on the derivative liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 + Details
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- Definition Date the derivative contract matures, in CCYY-MM-DD format. + References No definition available. + Details
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- Definition Interest and debt related expenses associated with nonoperating financing activities of the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 + Details
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