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Fair Value Measurements - Estimated Fair Value and Carrying Value of Senior Notes (Details) (USD $)
In Thousands, unless otherwise specified

Mar. 31, 2015

Dec. 31, 2014

Fair Value, Assets and Liabilities Measured on Recurring Basis

Carrying Value

$ 3,370,578us-gaap_LongTermDebt

$ 3,195,436us-gaap_LongTermDebt

8.75% Senior Notes due 2020

Fair Value, Assets and Liabilities Measured on Recurring Basis

Carrying Value

445,580us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesEightPointSevenFivePercentDue2020Member

^[1]

445,402us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesEightPointSevenFivePercentDue2020Member

^[1]

7.5% Senior Notes due 2021

Fair Value, Assets and Liabilities Measured on Recurring Basis

Carrying Value

1,178,372us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2021Member

^[2]

1,178,486us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2021Member

^[2]

8.125% Senior Notes due 2022

Fair Value, Assets and Liabilities Measured on Recurring Basis

Carrying Value

750,000us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesEightPointOneTwoFivePercentDue2022Member

750,000us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesEightPointOneTwoFivePercentDue2022Member

7.5% Senior Notes due 2023

Fair Value, Assets and Liabilities Measured on Recurring Basis

Carrying Value

821,626us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2023Member

^[3]

821,548us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2023Member

^[3]

Fair Value Measurements Level 2 | 8.75% Senior Notes due 2020

Fair Value, Assets and Liabilities Measured on Recurring Basis

Fair Value

292,500us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesEightPointSevenFivePercentDue2020Member
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member

303,750us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesEightPointSevenFivePercentDue2020Member
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member

Fair Value Measurements Level 2 | 7.5% Senior Notes due 2021

Fair Value, Assets and Liabilities Measured on Recurring Basis

Fair Value

728,500us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2021Member
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member

752,000us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2021Member
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member

Fair Value Measurements Level 2 | 8.125% Senior Notes due 2022

Fair Value, Assets and Liabilities Measured on Recurring Basis

Fair Value

460,125us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesEightPointOneTwoFivePercentDue2022Member
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member

472,500us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesEightPointOneTwoFivePercentDue2022Member
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member

Fair Value Measurements Level 2 | 7.5% Senior Notes due 2023

Fair Value, Assets and Liabilities Measured on Recurring Basis

Fair Value

$ 503,250us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2023Member
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member

$ 519,750us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2023Member
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member

[1]	Carrying value is net of $4,420 and $4,598 discount at March 31, 2015 and December 31, 2014, respectively.
[2]	Carrying value includes a premium of $3,372 and $3,486 at March 31, 2015 and December 31, 2014, respectively.
[3]	Carrying value is net of $3,374 and $3,452 discount at March 31, 2015 and December 31, 2014, respectively.

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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611



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-Section 50

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

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-Article 9



Reference 5: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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