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Acquisitions and Divestitures - Arena Acquisition - Unaudited Pro Forma Results of Operations (Parenthetical) (Details) (Arena Acquisition, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2010
Arena Acquisition
Business Acquisition [Line Items]
Reversal of deferred tax asset valuation allowance, pro forma adjustment	$ 454.5

X

- Definition

Reversal of deferred tax asset valuation allowance, pro forma adjustment

+ References

No definition available.

+ Details

Name:	sd_ReversalOfDeferredTaxAssetValuationAllowanceProFormaAdjustment
Namespace Prefix:	sd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Details

Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration