XML 170 R95.htm IDEA: XBRL DOCUMENT v2.4.1.9
Long-Term Debt - Narrative (Details) (USD $)
12 Months Ended 0 Months Ended 1 Months Ended 3 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Feb. 23, 2015
Aug. 31, 2012
Apr. 30, 2012
Sep. 30, 2012
Feb. 20, 2015
Oct. 31, 2014
Oct. 30, 2014
Mar. 31, 2013
Debt Instrument [Line Items]                      
Senior credit facility outstanding amount $ 0us-gaap_LineOfCredit $ 0us-gaap_LineOfCredit                  
Premium paid to purchase notes and unamortized debt issuance cost in relation to the notes 0us-gaap_GainsLossesOnExtinguishmentOfDebt (82,005,000)us-gaap_GainsLossesOnExtinguishmentOfDebt (3,075,000)us-gaap_GainsLossesOnExtinguishmentOfDebt                
Subsequent Event                      
Debt Instrument [Line Items]                      
Senior credit facility outstanding amount               100,000,000us-gaap_LineOfCredit
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
     
Additional aggregate principal indebtedness permitted (less than)       500,000,000sd_LineofCreditFacilityMaximumAdditionalIndebtednessPermittedUndertheAmendedCreditAgreement
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Reduction in borrowing base for every $1 of junior lien debt incurred       0.25sd_LineofCreditFacilityReductiontoMaximumBorrowingCapacityforEachDollarofAdditionalIndebtednessIncurred
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Senior credit facility                      
Debt Instrument [Line Items]                      
Net debt to EBITDA, ratio maximum 4.5sd_DebtToEBITDARatioMaximum
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
                   
Current assets to current liabilities, ratio minimum 1.0sd_CurrentRatioMinimum
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
                   
Long-term debt, debt to EBITDA ratio, total funded debt determination 10,000,000.0sd_AmountCashMustBeExceededByForTotalFundedDebtReduction
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
                   
Debt maturity date October 2019                    
Line of credit facility, minimum collateral amount of proved oil and gas reserves representing the discounted present value of reserves used in borrowing base determination 80.00%sd_AmountOfProvedReservesPledgedAsCollateralPercentage
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
                   
Line of credit facility, maximum amount outstanding during period 0us-gaap_LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
0us-gaap_LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
                 
Line of credit facility maximum borrowings capacity                 1,200,000,000.0us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
775,000,000.0us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
 
Line of credit facility, amended borrowing capacity                 900,000,000.00sd_LineOfCreditFacilityAmendedMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
   
Line of credit facility, letters of credit outstanding 11,600,000us-gaap_LettersOfCreditOutstandingAmount
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
                   
Senior credit facility | Minimum                      
Debt Instrument [Line Items]                      
Line of credit facility, unused capacity, commitment fee percentage 0.375%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
                   
Senior credit facility | Maximum                      
Debt Instrument [Line Items]                      
Line of credit facility, unused capacity, commitment fee percentage 0.50%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
                   
Senior credit facility | London Interbank Offered Rate (LIBOR) | Minimum                      
Debt Instrument [Line Items]                      
Line of credit facility, basis spread on variable rate 1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
                   
Senior credit facility | London Interbank Offered Rate (LIBOR) | Maximum                      
Debt Instrument [Line Items]                      
Line of credit facility, basis spread on variable rate 2.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
                   
Senior credit facility | Federal Funds                      
Debt Instrument [Line Items]                      
Line of credit facility, basis spread on variable rate 0.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_VariableRateAxis
= us-gaap_FederalFundsEffectiveSwapRateMember
                   
Senior credit facility | One-Month Eurodollar Rate                      
Debt Instrument [Line Items]                      
Line of credit facility, basis spread on variable rate 1.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_VariableRateAxis
= sd_OneMonthEurodollarRateMember
                   
Senior credit facility | Base Rate | Minimum                      
Debt Instrument [Line Items]                      
Line of credit facility, basis spread on variable rate 0.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
                   
Senior credit facility | Base Rate | Maximum                      
Debt Instrument [Line Items]                      
Line of credit facility, basis spread on variable rate 1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
                   
Senior credit facility | Subsequent Event                      
Debt Instrument [Line Items]                      
Covenant, Ratio of secured debt to EBITDA, maximum       2.25sd_DebtInstrumentRestrictiveCovenantsRatioofSecuredDebtToEBITDAMeasuredQuarterly
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Covenant, Ratio of EBITDA to interest expense at Mar 2015       2.00sd_DebtInstrumentRestrictiveCovenantsRatioOfEBITDAToInterestExpensePeriodOne
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Covenant, Ratio of EBITDA to interest expense at Jun 2015       2.00sd_DebtInstrumentRestrictiveCovenantsRatioOfEBITDAToInterestExpensePeriodTwo
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Covenant, Ratio of EBITDA to interest expense at Sep 2015       1.75sd_DebtInstrumentRestrictiveCovenantsRatioOfEBITDAToInterestExpensePeriodThree
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Covenant, Ratio of EBITDA to interest expense at Dec 2015       1.50sd_DebtInstrumentRestrictiveCovenantsRatioOfEBITDAToInterestExpensePeriodFour
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Covenant, Ratio of EBITDA to interest expense at Mar 2016       1.50sd_DebtInstrumentRestrictiveCovenantsRatioOfEBITDAToInterestExpensePeriodFive
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Covenant, Ratio of EBITDA to interest expense at Jun 2016       1.50sd_DebtInstrumentRestrictiveCovenantsRatioOfEBITDAToInterestExpensePeriodSix
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Covenant, Ratio of EBITDA to interest expense at Sep 2016       1.50sd_DebtInstrumentRestrictiveCovenantsRatioOfEBITDAToInterestExpensePeriodSeven
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Covenant, Ratio of EBITDA to interest expense at Dec 2016       2.00sd_DebtInstrumentRestrictiveCovenantsRatioOfEBITDAToInterestExpensePeriodEightAndThereafter
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Covenant, Ratio of total net debt to EBITDA at Jun 2016       6.25sd_DebtInstrumentRestrictiveCovenantsRatioOfTotalNetDebtToEBITDAPeriodOne
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Covenant, Ratio of total net debt to EBITDA at Sep 2016       6.00sd_DebtInstrumentRestrictiveCovenantsRatioOfTotalNetDebtToEBITDAPeriodTwo
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Covenant, Ratio of total net debt to EBITDA at Dec 2016       6.00sd_DebtInstrumentRestrictiveCovenantsRatioOfTotalNetDebtToEBITDAPeriodThree
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Covenant, Ratio of total net debt to EBITDA at Mar 2017       5.50sd_DebtInstrumentRestrictiveCovenantsRatioOfTotalNetDebtToEBITDAPeriodFour
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Covenant, Ratio of total net debt to EBITDA at Jun 2017       5.50sd_DebtInstrumentRestrictiveCovenantsRatioOfTotalNetDebtToEBITDAPeriodFive
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Covenant, Ratio of total net debt to EBITDA at Sep 2017       5.00sd_DebtInstrumentRestrictiveCovenantsRatioOfTotalNetDebtToEBITDAPeriodSix
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Covenant, Ratio of total net debt to EBITDA at Dec 2017       5.00sd_DebtInstrumentRestrictiveCovenantsRatioOfTotalNetDebtToEBITDAPeriodSeven
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Covenant, Ratio of total net debt to EBITDA at Mar 2018       4.50sd_DebtInstrumentRestrictiveCovenantsRatioOfTotalNetDebtToEBITDAPeriodEight
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Line of credit facility maximum borrowings capacity       900,000,000.0us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Line of credit facility, letters of credit outstanding               11,300,000us-gaap_LettersOfCreditOutstandingAmount
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
     
Senior credit facility | Subsequent Event | London Interbank Offered Rate (LIBOR) | Minimum                      
Debt Instrument [Line Items]                      
Line of credit facility, basis spread on variable rate       1.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
             
Senior credit facility | Subsequent Event | London Interbank Offered Rate (LIBOR) | Maximum                      
Debt Instrument [Line Items]                      
Line of credit facility, basis spread on variable rate       2.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
             
Senior credit facility | Subsequent Event | Base Rate | Minimum                      
Debt Instrument [Line Items]                      
Line of credit facility, basis spread on variable rate       0.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
             
Senior credit facility | Subsequent Event | Base Rate | Maximum                      
Debt Instrument [Line Items]                      
Line of credit facility, basis spread on variable rate       1.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
             
Senior Notes                      
Debt Instrument [Line Items]                      
Long-term debt maturities, repayments of principal in the next twelve months 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
/ us-gaap_DebtInstrumentAxis
= us-gaap_SeniorNotesMember
                   
Long-term debt maturities, in years two and three 0us-gaap_LongTermDebtMaturingInYearsTwoAndThree
/ us-gaap_DebtInstrumentAxis
= us-gaap_SeniorNotesMember
                   
Long-term debt maturities, in years four and five 0us-gaap_LongTermDebtMaturingInYearsFourAndFive
/ us-gaap_DebtInstrumentAxis
= us-gaap_SeniorNotesMember
                   
Senior Notes Outstanding                      
Debt Instrument [Line Items]                      
Debt issuance cost, cumulative 70,200,000sd_DebtIssuanceCostCumulative
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesOutstandingMember
                   
9.875% Senior Notes due 2016                      
Debt Instrument [Line Items]                      
Debt tender offer, aggregate principal amount                     365,500,000sd_DebtTenderOfferAggregatePrincipalAmount
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesNinePointEightSevenFivePercentDue2016Member
Long-term debt, fixed interest rate                     9.875%us-gaap_LongTermDebtPercentageBearingFixedInterestRate
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesNinePointEightSevenFivePercentDue2016Member
Debt instrument redemption price per principal amount                     1,061.34sd_DebtInstrumentRedemptionPricePerPrincipalAmount
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesNinePointEightSevenFivePercentDue2016Member
8.0% Senior Notes due 2018                      
Debt Instrument [Line Items]                      
Debt tender offer, aggregate principal amount                     750,000,000sd_DebtTenderOfferAggregatePrincipalAmount
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesEightPointZeroPercentDue2018Member
Long-term debt, fixed interest rate                     8.00%us-gaap_LongTermDebtPercentageBearingFixedInterestRate
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesEightPointZeroPercentDue2018Member
Debt instrument redemption price per principal amount                     1,052.77sd_DebtInstrumentRedemptionPricePerPrincipalAmount
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesEightPointZeroPercentDue2018Member
9.875% Senior Notes due 2016 and 8.0% Senior Notes due 2018                      
Debt Instrument [Line Items]                      
Premium paid to purchase notes and unamortized debt issuance cost in relation to the notes   (82,000,000)us-gaap_GainsLossesOnExtinguishmentOfDebt
/ us-gaap_DebtInstrumentAxis
= sd_NinePointEightSevenFivePercentSeniorNotesAndEightPointZeroPercentSeniorNotesMember
                 
2012 Senior Notes                      
Debt Instrument [Line Items]                      
Debt issuance cost, cumulative     41,000,000sd_DebtIssuanceCostCumulative
/ us-gaap_DebtInstrumentAxis
= sd_A2012SeniorNotesMember
               
Proceeds from debt, net of issuance costs         1,100,000,000us-gaap_ProceedsFromDebtNetOfIssuanceCosts
/ us-gaap_DebtInstrumentAxis
= sd_A2012SeniorNotesMember
           
8.125% Senior Notes due 2022                      
Debt Instrument [Line Items]                      
Debt maturity date 2022 2022                  
Long-term debt, fixed interest rate 8.125%us-gaap_LongTermDebtPercentageBearingFixedInterestRate
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesEightPointOneTwoFivePercentDue2022Member
8.125%us-gaap_LongTermDebtPercentageBearingFixedInterestRate
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesEightPointOneTwoFivePercentDue2022Member
      8.125%us-gaap_LongTermDebtPercentageBearingFixedInterestRate
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesEightPointOneTwoFivePercentDue2022Member
         
Debt instrument, face amount           750,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesEightPointOneTwoFivePercentDue2022Member
         
Proceeds from debt, net of issuance costs           730,100,000us-gaap_ProceedsFromDebtNetOfIssuanceCosts
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesEightPointOneTwoFivePercentDue2022Member
         
7.5% Senior Notes due 2023                      
Debt Instrument [Line Items]                      
Debt maturity date 2023 2023                  
Long-term debt, fixed interest rate 7.50%us-gaap_LongTermDebtPercentageBearingFixedInterestRate
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2023Member
7.50%us-gaap_LongTermDebtPercentageBearingFixedInterestRate
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2023Member
    7.50%us-gaap_LongTermDebtPercentageBearingFixedInterestRate
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2023Member
           
Debt instrument, face amount         825,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2023Member
           
Selling price of Senior Notes issued         99.50%sd_SellingPriceOfSeniorNotesIssued
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2023Member
           
7.5% Senior Notes due 2021                      
Debt Instrument [Line Items]                      
Debt maturity date 2021 2021                  
Long-term debt, fixed interest rate 7.50%us-gaap_LongTermDebtPercentageBearingFixedInterestRate
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2021Member
7.50%us-gaap_LongTermDebtPercentageBearingFixedInterestRate
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2021Member
    7.50%us-gaap_LongTermDebtPercentageBearingFixedInterestRate
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2021Member
           
Debt instrument, face amount         275,000,000.0us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2021Member
           
Selling price of Senior Notes issued         101.625%sd_SellingPriceOfSeniorNotesIssued
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2021Member
           
Senior Floating Rate Notes due 2014                      
Debt Instrument [Line Items]                      
Line of credit facility, basis spread on variable rate             3.625%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= sd_SeniorFloatingRateNotesDue2014Member
       
Premium paid to purchase notes and unamortized debt issuance cost in relation to the notes     (3,100,000)us-gaap_GainsLossesOnExtinguishmentOfDebt
/ us-gaap_DebtInstrumentAxis
= sd_SeniorFloatingRateNotesDue2014Member
               
Percentage of aggregate senior notes outstanding principal amount purchased             100.00%sd_Debtinstrumentrepurchasedpercentage
/ us-gaap_DebtInstrumentAxis
= sd_SeniorFloatingRateNotesDue2014Member
       
Debt instrument, repurchased face amount             $ 350,000,000.0us-gaap_DebtInstrumentRepurchasedFaceAmount
/ us-gaap_DebtInstrumentAxis
= sd_SeniorFloatingRateNotesDue2014Member