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Acquisitions and Divestitures - Drilling and Completion Costs Associated with Sale of Working Interests (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013
Drilling Carry Transaction Activities
Total Drilling Carry	$ 1,000.0
Drilling Carry Recorded	634.8
Drilling Carry Remaining	365.2
Atinum MidCon I, LLC
Drilling Carry Transaction Activities
Total Drilling Carry	250.0
Drilling Carry Recorded	240.4
Drilling Carry Remaining	9.6
Repsol E&P USA, Inc.
Drilling Carry Transaction Activities
Total Drilling Carry	750.0
Drilling Carry Recorded	394.4
Drilling Carry Remaining	$ 355.6

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- Definition

Drilling Carry Received or Billed, Cumulative

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No definition available.

+ Details

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Namespace Prefix:	sd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Details

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Namespace Prefix:	sd_
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Balance Type:	na
Period Type:	duration

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- Definition

Remaining Drilling Carry

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No definition available.

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Name:	sd_RemainingDrillingCarry
Namespace Prefix:	sd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Definition

Total Drilling Carry

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No definition available.

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Name:	sd_TotalDrillingCarry
Namespace Prefix:	sd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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