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

Dec. 31, 2014

Dec. 31, 2013

Fair Value Assets And Liabilities Measured On Recurring Basis

Carrying value

$ 3,195,436us-gaap_LongTermDebt

$ 3,194,907us-gaap_LongTermDebt

8.75% Senior Notes due 2020

Fair Value Assets And Liabilities Measured On Recurring Basis

Carrying value

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

^[1]

444,736us-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

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

^[2]

1,178,922us-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

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

^[3]

821,249us-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

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

^[1]

486,000us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesEightPointSevenFivePercentDue2020Member
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member

^[1]

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

Fair Value Assets And Liabilities Measured On Recurring Basis

Fair value

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

^[2]

1,230,813us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2021Member
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member

^[2]

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

Fair Value Assets And Liabilities Measured On Recurring Basis

Fair value

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

795,000us-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

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

^[3]

$ 837,375us-gaap_DebtInstrumentFairValue
/ us-gaap_DebtInstrumentAxis
= sd_SeniorNotesSevenPointFivePercentDue2023Member
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member

^[3]

[1]	Carrying value is net of $4,598 and $5,264 discount at December 31, 2014 and 2013, respectively.
[2]	Carrying value includes a premium, applicable to notes issued in August 2012, of $3,486 and $3,922 at December 31, 2014 and 2013, respectively.
[3]	Carrying value is net of $3,452 and $3,751 discount at December 31, 2014 and 2013, 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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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

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



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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

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-Article 9



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

-Publisher SEC

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-Name Accounting Standards Codification

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