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Variable Interest Entities - Narrative (Details) - USD ($) | 9 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Dec. 31, 2014 | Mar. 31, 2014 | Dec. 31, 2013
Variable Interest Entity |  |  |  |  |
Proceeds from sale of royalty trust units | $ 0 | $ 22,119,000 |  |  |
Royalty Trusts |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Percentage of royalty interest conveyed to company at trust termination | 50.00% |  |  |  |
Percentage of royalty interest sold at trust termination | 50.00% |  |  |  |
Percentage of subordinated units to total units | 25.00% |  |  |  |
Percentage of cash available in excess of target distribution paid for incentive distribution | 50.00% |  |  |  |
Outstanding balance under loan commitment | $ 0 |  | $ 0 |  |
Noncontrolling interest | $ 663,500,000 |  | $ 1,300,000,000 |  |
Proceeds from sale of royalty trust units |  | $ 22,100,000 |  |  |
Grey Ranch Plant, L.P |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Beneficial interest owned by Company |  |  |  |  | 50.00%
Company purchase of noncontrolling interest, percentage |  |  |  | 50.00% |
Grey Ranch Plant Genpar, LLC ("Genpar") |  |  |  |  |
Variable Interest Entity |  |  |  |  |
Beneficial interest owned by Company |  |  |  |  | 50.00%
Company purchase of noncontrolling interest, percentage |  |  |  | 50.00% |
Percentage ownership of another VIE |  |  |  |  | 1.00%

X
- Definition Outstanding balance under loan commitments. + References No definition available. + Details
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Balance Type: | credit
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- Definition Decrease in noncontrolling interest expressed as a percentage (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests). + References No definition available. + Details
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X
- Definition The percentage of the cash available for distribution on all trust units for any quarter in excess of the target distribution that is paid for the incentive distributions. + References No definition available. + Details
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- Definition Percentage of royalty interests that will revert back to the Company upon termination of the trust. + References No definition available. + Details
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Namespace Prefix: | sd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage of Royalty Interest to be sold at Trust terrmination with proceeds distributed to Royalty Trust unitholders + References No definition available. + Details
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Period Type: | duration

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- Definition Percentage of Subordinated units to total units. + References No definition available. + Details
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- Definition The proceeds received from the sale of royalty trust units. + References No definition available. + Details
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- Definition Variable Interest Entity, Ownership Interests Percentage + References No definition available. + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Definition Portion of equity (net assets) in a variable interest entity (VIE) not attributable, directly or indirectly, to the parent entity. That is, this is the portion of equity in a VIE that is attributable to the noncontrolling interest (previously referred to as minority interest). + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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- Details
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